Fermilab 50th Anniversary

As the bookend to Dawn of a new year... from January 1, 2017, the sun sets on my favorite tree on December 31.

The last moment of 2017, as seen from the Main Control Room

Neutrino Campus MINOS.

Mr. Snowman just stopped by the Village for new year's eve. If you pass by 15 Potawatomi, make sure to say hello. He seems a bit cold at first, but has a warming heart.

On the morning of the last day of 2017, the cold, ice crystal-filled air created a parhelion around the sun.

On a cold winter day, the bison stay close to the barn and feed.

It's cold, snow on the ground and roads are closed. Typical for Fermilab.

A hawk circles over the security office building.

Can see Wilson Hall in the distance with snow on the ground.

Three of the senior engineers in the Accelerator Division relax after the last 9:00 Operations Meeting of the year in One West. L-R: Bob Brooker, Chris Jensen and George Krafczyk. George, with ID number 322, has been working at Fermilab forever.

She made a difference! Without Leah Hesla the DIFF, or Daily Image from Fermilab project would have been just another good idea. Thanks to her, Elliott McCrory, and Maura Barone Fermilab was able to celebrate it's 50th-anniversary year by gathering a least one image each day of 2017.

Some of the senior members of the ESH&Q's Interlock Group in their lab space adjacent to the Accelerator Division Main Control Room. From left: Chuck Worel, Glenn Federwitz (seated), Randy Zifko and John Fomusa. Each of these folks has a Fermilab ID number lower than 4000; Worel has the lowest one: 01943N.

Wayne Shaddix from the Particle Physics Division Building Management Group says, "See ya next year Fermilab."

Elliott McCrory was a driving force behind the DIFF project. His upbeat perseverance and encouragement kept all the photographers going and made sure that each day of the year was covered.

Farmland near Site 67, seen from NML

The beauty of the creatures here at Fermilab is something to be enjoyed every day. What a great place to work. We are truly blessed!

Just had to take a selfie as we grouped together for the DIFF family portrait.

Some of the photographers who contributed photos to the DIFF project gathered for a group photo before the end of the year. DIFF, or Daily Image from Fermilab, was organized and run by Elliott Mccrory, Leah Hesla and Maura Barone to help celebrate Fermilab's 50th-anniversary year by gathering a least one image taken at Fermilab for each day of 2017.

Reidar Hahn, Fermilab photographer, takes a group picture of the people who participated in the Daily Image From Fermilab — DIFF — project.

As the year long Daily Image For Fermilab, or DIFF , project for Fermilab's 50th anniversary comes to an end, Elliott McCrory has a brilliant idea for Fermilab photographer Reidar Hahn to photograph those folks that participated in submitting photos through out the year. My DIFF, of course: It's Reidar!

Here we are, all posing for Reidar's picture of the DIFF photographers in the Wilson Hall atrium.

Some of the DIFF photographers get ready for a group shot.

Zero-degree temperatures, clear skies and a cover of snow make for a picturesque holiday-time parking lot.

Outside Wilson Hall.

The atrium is decorated with Christmas lights.

The whitetail were out foraging early on a cold winter day.

A view from the Big Woods trail while out skiing.

It was awfully cold this morning - about 0 degrees Fahrenheit.

Will Flanagan, foreground, and Shakakai Yang take shifts in ROC West, making sure all systems are running optimally for the NOvA experiment.

Clecio De Bom, guest visitor from Centro Brasileiro des Pesquisas Fisicas who works with MKIDs at Fermilab, enjoys showing his mother around SiDet.

The auditorium lobby in the early morning - fisheye view.

Kuhn Barn

The Paterno family takes time out of their Christmas day to get a photo at Fermilab, braving a flat tire, cold temperatures and negative wind chills in order to do so.

Waiting at the light at Kirk and Pine looking north, this is not a typical sight for 8 a.m. on a Monday morning. But it _is_ Christmas morning.

The fresh snowfall in the parking lot behind Wilson Hall. On any other Monday at 8 a.m., there wouldn't be an inch of undisturbed snow in the whole place, but this was taken on a bright, cold Christmas morning.

The geese don’t mind the snow. In fact, they wear it well.

It's snowing!

A holiday tradition in the Main Control Room. The tiers of colors light up sequentially as more and more beam is injected into the accelerators. It was good to see the highest tier light up just in time for Christmas, after several weeks of running low-intensity beam due to vacuum issues in the Main Injector.

Cattails along the road near the Cryogenics Department building.

Walking my dog on a lovely Saturday afternoon at Fermilab

Quiet sunset on a cold winter day.

Who is this, Mr. Christmas? No, it's not Santa Claus: The beard is not gray enough. Why, it's David Andersen, who is the keeper of the IDs. For once he gets his photo taken.

Fermilab Natural Areas' donation to the Lederman Science Center of numerous field guides was documented in a media photo session. From left: Kurt Riesselmann, Al Johnson, Tim Meyer, Spencer Pasero, Penny Kasper, Liz Copeland, Hema Ramamoorthi.

From left: Bert Gonzalez of the Particle Physics Division Detector Development and Operations Department, Matthew Jones from Purdue University, and Andrei Gaponenko of Mu2e discuss the assembly process for Mu2e modules. Bert holds a test module.

Inside Fermilab meeting rooms, the unusual and the ordinary.

A beautiful beginning to the solstice.

Rich Andrews, ID number 221, poses with the injector for FAST/IOTA in the NML building. Rich has been a mechanical engineer here since the earliest days of Fermilab.

A large number of bidders contractors / offerors attended the pre-bid meeting and walkthrough of the ICBa building project.

Good food, good friends, great Fermilab!

Donna Kubik from the Particle Physics Division Detector Development and Operations Department, is pictured with a kinetic inductance detector (KID) that she and others are studying potentially to use for study of the cosmic microwave background. The KID is mounted on one of the millikelvin refrigerators at SiDet.

TJ Sarlina shows off his amazing Christmas attire.

Members of the Fermilab Accelerator Physics Center celebrate at the annual holiday luncheon.

The sky blazes behind Broken Symmetry at the Pine Road West gate.

A place for doing hard work ...

Wilson Hall casts a long shadow just after sunrise on the day before the winter solstice.

The high-rise

Beginning of the burn west of Eola Road

Just had to catch this moment.

Nigel Lockyer listens to remarks made my DOE Fermi Site Office Manager Michael Weis during today's all-hands meeting.

An infrared image of the back side of Wilson in the late afternoon light.

Last seconds of sunlight in a short winter day

This message painted on a rock was lying along the curb at the Wilson Hall front horseshoe drive ... not sure from or for whom, but not a bad thought.

Overcast skies on a late Sunday afternoon

No known names.

Sue Campbell has been a faithful auditorium member of the Fermilab Arts and Lecture Series since before 1991.

Some of our technical staff and managers gather round the Technical Division Christmas tree for a photo op.

Mary Convery and Mike Lindgren enjoy a buffet lunch prepared by the Integrated Planning and Performance Management team on Wilson Hall's second floor.

Christmas décor in the Wilson Hall atrium, so pretty!!

Henry Pirtle received a gift from Santa at the Festive Holiday Party with Santa.

Arturo Gonzales is installing some of the 54 modules in the new solid state Marx generators in the Linac. They replace the 1968-era Continental Electronics tube-based power supplies. The tubes are becoming scarce since the U.S. Coast Guard no longer needs them. Once the supply of them is gone and existing ones can no longer be reconditioned, our Linac would be shut down if these new power sources were not built. There is one 28-cell modulator in station 1, and there will be six 54-cell units including a test/spare unit.

Adam Lyon, Tracy Usher, Erica Snider

Steve Holmes discusses the positive report for the PIP-II Independent Project Review with Elaine McCluskey, left, and the next PIP-II project leader, Lia Merminga.

The Particle Physics Division Detector Development Ops Dept. and others enjoys a Christmas lunch of pizza, salad and appetizers at Pal Joey's. Pictured from left are Wojciech Blaszynski, Sabina Aponte, Otto Alvarez, Ron Lipton, Rick Tesarek and JJ Schmidt.

Gianluca Petrillo

A group of facilities and thermosystem engineers troubleshoot a dedicated outside-air system at the Heavy Assembly Building.

Hats from over the years ...

Battalion Chief Chris Williams discusses the fire service recall features of the Wilson Hall elevators with security personnel.

Eddie Mejia enjoys his yerba mate tea with his ravioli lunch.

Brian Chase of the Accelerator Division listens to a question from a DOE reviewer during the Independent Project Review of PIP-II for CD-1, in the Racetrack.

Decorated tree on the 14th floor in Wilson Hall.

Steve Dixon and Nigel Lockyer enjoy a moment during the PIP-II Independent Project Review for CD-1.

Fermilab is a great place to enjoy the great outdoors, even in 18-degree weather! These joggers don't give it a second thought to jog around the Main Ring in this cold weather ... brrrrr!

Where did that time go?

The “Bod Squad” annual holiday party was held December 12, 2017, at Chez Leon which included a fun “white elephant” gift exchange. Pictured here are members of the squad and their gifts. Standing, from left: Roger Dixon, Penelope Constanta, David Hockin, Joan Forsberg instructor, Roberta Kucharski, Carol Johnstone, Jeanne and Arthur Kreymer, and Melonie Hays. Seated: Barbara Kristen, Suzanne Wilczak, Marilyn Dixon and Carol’s father Jerry.

Silly coyote - walking across the ice in front of Wilson Hall in the middle of the day.

If this owl hadn't flapped its wings, I wouldn't have seen it camouflaged in the woods near the Fire Department.

I catch Bert getting ready to log back in to his laptop after getting his well deserved cup of java! #MobileMonday

Snow after the burn

On a nice sunny day looking down Blackhawk Boulevard, seeing a nice sky.

One of the students of Saturday Morning Physics brought his little brother, and a colorful hat, to the final lecture of the term. Pushpa Bhat of the Director's Office is the lecturer.

One of the first hard freezes of winter is shown near the Main Ring cooling ponds.

Si Xie, a guest and visitor from California Institute of Technology, does some testing in the Photo Detector Timing Lab for the Compact Muon Solenoid / CMS timing project.

These Accelerator Division folks often enjoy an early morning snack in the cafeteria on a Friday. From left: Paul Czarapata, Bob Brooker, Cons Gattuso, Dave Capista, Stan Johnson and Greg Vogel.

The taco salad in the Fermilab cafeteria is a perennial favorite.

Light snow in December.

This morning, Thursday, December 7, we work up to our first light dusting of snow for the season. While walking to work, in the woods between the Lederman Science Education Center and Wilson Hall, I noticed this interesting pattern of bicycle tracks. Apparently, the three riders compacted the snow with their tires and when the snow on the warmer path either melted or sublimated. Only the tracks were left visible.

First snow of the year ... small, but a sign of things to come.

Melonie Hays is shown visiting with Mike Smego, Gary Teafoe and Chuck Wilson about their work on LCLS-II cryomodule 08 after taking their photo to be documented in the Fermilab 50th-anniversary DIFF gallery.

December dusting of snow covers some of the road on the way to SiDet.

Aligning a cold-mass cavity string to the vacuum vessel for LCLS-II Cryomodule 08. Pictured here are Mike Smego, left, Chuck Wilson, center, and Gary Teafoe, sitting.

Liz Copeland sorts seeds for distribution in specific locations in the prairie.

View from 15th floor of Wilson Hall.

New bicycles ... Divvy or Fivvy?

Ed Dijak, from the Alignment and Metrology Department in Particle Physics Division, took advantage of using the secured bins for secure shedding placed at SiDet.

Reversed view from IARC to Technical Division.

MINERvA and MINOS data acquisition experts work hard to get detectors working before beam comes back.

The Main Control Room has through out the day many operators and experts working to deliver beam to the users.

Accelerator operators Alyssa Miller and Mike Olander are interviewed by a film crew from WGBH for an upcoming episode of the PBS show Nova.

Some Christmas décor at SiDet

Before moving to Illinois to work at the lab I lived in areas that had mountains or at least significant hills. Those are among the things I really miss living here. I tend to think of Illinois as being rather flat place. However, that's not quite true. This is a photo taken of the lab prairie adjacent to Pine Street following the burn that was just done. Note the ant mounds that one doesn't normally see when the plants are growing. Now with the plants burned off, you can see that the prairie is anything but "flat," especially at the scale of an ant. Does anyone know which type of ants create the mounds on our/their prairie?

Rich Divelbliss mows down some tall grass in his garden in the Fermilab Garden Club area.

Andre Donadon Servelle of the Particle Physics Division Astrophysics Department works on the Sub Electron Noise Skipper-CCD Experimental Instrument, SENSEI, a project in the Lab A cleanroom at SiDet. #MobileMonday

Scorched earth day after controlled burn

It's a beautiful Saturday morning, the sun is shining, and the light is good. So where is everyone?

Erik Ramberg talks about the great mathematician, Emmy Noether, in the context of symmetries in physics during Saturday Morning Physics.

It's done very carefully.

The waxing gibbous moon makes an early arrival.

Tom Nicol, mechanical engineer in the Technical Division, at a service recognition lunch at Chez Leon celebrating 40 years at Fermilab with other members of the 25-, 40- and 45-year clubs.

Greg and Andrea share a quiet lunch together in Greg's office in the Transfer Gallery.

Joe Schaubel and Dana Smith of Fermilab's Carpenter Shop hang a banner on the billboard along Kirk Toad thanking the public for helping us celebrate this past year.

Greg Gilbert leads the meeting to go over the week's safety issues with the electricians and mechanics of Site 38.

A Fermilab prairie burn.

'Tis the season!

Wooded area by Site 38

Inside of a typical refrigerator at Fermilab.

Holter Road in the Betz Prairie

Sunsets from the lab. A sight that never gets old.

The Fermilab Fire Department respond to an activated fire alarm at one of our service buildings. Estimates put their response time today at under 8 minutes!

View from the Lederman Center

Annual Particle Physics Division Clean Up Day whereby the day was spent sending unused equipment to surplus and reducing the paper footprint on the 14th floor of Wilson Hall. Moving two dumpsters of recyclable paper waste into position for removal are, left to right, Brian Hess, Johnny Green, Tom Zimmerman, Terri Shaw and Carolyn Johnson.

November at Wilson Hall.

Kingfisher

A new small conference room will soon be available on Wilson Hall, 8th floor.

Weeping willows are weeping because they are losing their leaves.

The rising sun is captured on a beautiful morning.

Beautiful sunrise as I headed into work. Corner of Receiving and Batavia roads.

"The Worm" - One of the old Meson Experimental Areas

Wilson Hall

Awesome sunset behind Wilson Hall

Wilson Hall as viewed from IARC

Fall prairie burn north of Wilson Street

One of our bison meanders gracefully across the field.

Geese having a meeting at Fermilab.

Mallards sun in the ring pond.

In the Main Control Room, there are many keytrees holding keys to the many enclosures we run beam through. Again, more keys.

Early morning light on the geese in front of the Feynman Computing Center.

Barry Glicklich, Elishabet Lato, Sarah Paige Werner

Starlings gather on a light pole.

Thanksgiving weekend, clear day.

Weeping willows at sunrise

A view of the early morning sunrise on the east side of the lab

Backlit cattails in an autumn wind

Moon and Wilson Hall with reflection in Swan Lake

Wilson Hall from Betz Prairie at sunrise

Fermilab welcome sign.

On a cold turkey day, looking at the empty Wilson Hall

Meet Jorge. He is ready to serve you at the Abri Credit Union at Fermilab.

The day before TDay, so where is everyone?

Change Advisory Board meets every Wednesday at 9 a.m. Mike Kaiser, Christina Frank, Brittney Driggers, Glenn Cooper, Bonnie King, Andy Romero, Mike Rosier, Jerry Guglielmo.

View from the 11th floor of Wilson Hall

Bald eagle next to Swan Lake at lunch time

People head home at end of the day as a waxing crescent moon sets to the west of Wilson Hall.

Fermilab as seen from Blackwell Hill

It is essential to take moments to internalize beauty.

Eagle guarding Lake Logo from afar

A view of Wilson Hall from the Muon g-2 area.

Rainy late autumn afternoon

Marcela Carena gives the Saturday Morning Physics lecture to a group of Spanish-speaking high school students, in Spanish.

Group photo of the Tesla Test Collaboration (TTC) special topical workshop on "RF Superconductivity: Pushing Cavity Performance Limits” held last week at IARC.

Andre Salles gives a exceptional tour to visitors.

It was a combination of so many different types of clouds showing this morning, with just a hint of the sun behind them.

Two interlaced spiral staircases lead up to Fermilab's historic Pagoda Control Center.

Andre Frankenthal, visitor from Cornell University, sitting down, and Christina Suarez, visitor from Johns Hopkins University, are both working on Pixel Phase II sensors for CMS. They are using the Detector Test Area at SiDet.

John "Bogie" Van Bogaert and Yesenia Govea-Vargas work on a technical document at Bogie's desk.

Heavy Assembly Building — the HAB window

Fermilab's Interpretive Trails

An unattended mobile chalkboard with an entertaining display.

Pond near Fermilab

Wilson Hall at sunset

Sunset through Wilson Hall

Short-Baseline Neutrino Far Detector building where the ICARUS will be placed.

Gaston Gutierrez, standing, of the Particle Physics Division Astrophyics Department, and Wojciech Blaszynski of the Particle Physics Division DDOD Experiment Assembly and Installation group, are working on the alignment of the Atmospheric Dispersion Corrector rotator for the DESI experiment.

Eerie lights illuminate the welcome sign on the NOvA building.

Typical workspace you would see in the SiDet detector test rooms.

My understanding is that these were from the lab cafeteria from way back when. They are now in the Fermilab Archives to keep for the history of the lab.

Alvin Tollestrup addresses the audience in Ramsey Auditorium at the IEEE celebration honoring the Tevatron.

The sun warms off the frost on the evergreens and ginkgo leaves in front of SiDet. #MobileMonday

Dave Myers and Brian Niesman. Dave retires from Fermilab

A full house at the Fermilab Folk Club barn dance. We were visited by AFS students and sponsors. The dance is held in the Kuhn Village Barn.

Angela Fava, a Wilson fellow in the Neutrino Division, teaches the Saturday Morning Physics students about detectors, with Wilson Hall eavesdropping. SMP met in IARC this morning, as you can see.

Mechanical Engineer Stephanie Timpone gives a tour at SiDet. Since 26 degrees is a little chilly to be outdoors, she was giving her tour group some information on the Bubble Chamber indoors.

Mike Lindgren carries The Gong back to its resting place on the second floor of Wilson Hall. It was being used today, and yesterday, for the Director's Workforce Planning Workshop.

Sun sets at Fermilab.

Bob Zwaska listens to the presentation in the IARC Lecture Hall for the annual labwide strategic planning workshop. The other identifiable people are Mary Convery, Brendan Casey, Sergei Nagaitsev, John Bakken.

Three sandhill cranes, Grus canadensis, still here. These most likely are the remaining three of the four we have seen here for a few years now. The fourth was hit by a car back in September 2016 ... like geese, these mate for life.

The MCR Loto Boxes, ready for a MI access

Coming in extra early has its perks, especially with a view like this.

The Dark Energy Camera was built at Fermilab and installed atop the 4-meter Blanco Telescope at the Cerro Tololo Inter-American Observatory CTIO in Chile. The camera - inside the long black cylinder at the end of the telescope - is mainly used by the Dark Energy Survey, which is currently in its fifth year of observing at CTIO. In this image the camera is pointed at a section of the sky between the Large and Small Magellanic Clouds. This is a single 30-second exposure; the foreground is lit with moonlight.

Mandeep Gill, Brian Yanny and Marty Murphy pose multiple times in front of the 4-meter Blanco Telescope and Dark Energy Camera for a DES observing team photo.

Spotted together at Fermilab

Feeling grateful for this

Into the Nepese Marsh

Autumn colors along outbound Pine Street

Visitors Irene Zoi from University of Hamburg, on right, and Weinan Si, from University of California-Riverside, both work together in the Detector Test Area at SiDet, on CMS testing, Phase II pixels.

A proud-looking bald eagle surveys Swan Lake. This is the second day it has been spotted here.

Robert Barger of the Neutrino Division Technical Support Department ropes off the liquid-nitrogen Dewar area as it empties for safety purposes; afterwards the Dewar will be prepared for service.

These beauties were close by the fence today. I just had to stop for quick visit.

Bald eagle next to Swan Lake during early evening

The Advanced Detector Facility Group in the Particle Physics Division Detector Development and Operations Department is making plastic scintillator for the Pierre Auger KIT project in the FNAL-NICADD Extrusion Line Facility. Top left photo is of Jerry Zimmerman runs the extruder, while on the right of photo Ebin Joseph is doing quality control tests, measuring the light yield and the whole size of the parts being produced. Every 10 pieces, the light yield is tested with a radioactive source in the black box, and the result added to a spreadsheet. Bottom photos are of Wanda Newby, far left, Irina Pischalnikova, middle, and Sabina Aponte, who work together to examine the quality of these scintillator bars as they come out of the extrusion line. Sabina Aponte will feed a fiber through the scintillator bars to make sure the holes are wide open.

Senior Particle Physics Division Technician Terry Kiper works on some electronics in his 14th floor Wilson Hall office.

Beautiful sky over the accelerator. Picture taken from the 15th floor.

Andy Stefanik, Neutrino Division, checks the ICARUS installation proposal.

Prince on the hunt - Ring Road

Argonne Lab NOvA shifter Maury Goodman during his shift in the ROC (Remote Operations Center) for neutrino experiments in Wilson Hall.

When a 24,000-pound dipole magnet fails in the NuMI line, rigging expertise and safety protocols, including fall protection, are all part of the job. This is the replacement magnet being rigged into position on a Saturday to ensure quick return to operations.

Using examples of symmetries in nature, Leo Aliaga lectures to the Saturday Morning Physics students about how neutrinos fit into the Standard Model.

Weeds near E0 in the Tevatron

The sunset was gorgeous Friday night, so gorgeous that when I got off work I ran home to get my camera and returned in time to take this. Aren’t we lucky to be surrounded by such beauty?

Andrew Lathrop of the Particle Physics DDO Department, points to one of the experimental detectors in Lab A at SiDet.

Prairie in the fall

Artur Apresyan of the Particle Physics Division DDO Department, far left, and Si Xe, a postdoc from Caltech, discuss CMS data shown on the monitor.

Buck wild!

Crew makes sure everything flows smoothly.

Per Wikipedia, the mallard is considered to be a species of least concern by the International Union for Conservation of Nature. Unlike many waterfowl, mallards are considered an invasive species in some regions. My thoughts: They are enjoyable to watch and beautiful as well.

Walking to Fermilab for a field trip remains a local tradition.

NSF Director France Cordova and Director Nigel Lockyer admire some superconducting RF hardware during a tour of facilities in Technical Division's Industrial Center Building during the recent visit from former Prime Minister of Italy Matteo Renzi.

Dark Matter day and Halloween celebration by the MINERvA collaboration. We had warm dark matter brownies and cold dark pineapple chocolates during our dark coffee break to celebrate the day.

Welcome to Fermilab, aka geese land.

A 270-degree pano of the Main Control Room taken with a cell phone.

Is it just me or is this maple tree trying to disguise itself as a maple leaf?

A witch gives out treats to Trick-or-Treaters in the Fermilab Village.

A look-see inside the KRSS, a look many never see.

Valerie Higgins gets into the Halloween spirit in her office on the third floor of Wilson Hall.

What is this alien space ship looking thing? The item is a liquid-neon-hydrogen pump. It was used with a special dewar Particle Physics Division's Jim Kilmer and others got from Argonne National Laboratory to store their neon-hydrogen mix. It was used to mix the liquid.

Don't forget to STOP at the Frontier Pub on the way home.

A spooky maze awaits the arrival of kids for the annual Fermilab Student and Postdoc Association Halloween Party.

Happy Halloween, MINERvA.

Annual Precision Science Lunch in the Barn

A white-tailed deer surveys the area south of Lab F SiDet on a gloomy Friday evening.

One never knows what one may see on the center table in the Main Control Room. Today I saw this hardhat with a unique sticker.

Current physics majors and a professor from Carthage College sacrifice a Friday night to take a tour of Fermilab.

Happy Halloween, Fermilab.

Walk 2 Run participants stretch after a 30-minute run on the final day of the fall session.

Alex Romanenko center, Technical Division associate division head for SRF and head of the new Superconducting Quantum Systems initiative, discusses Quantum Computing Lab facility plans in the Industrial Center Building with his group.

Israel Hernandez Alatorre does some last-minute MIKDs — microwave kinetic inductance detectors — work in Lab C North before going home.

A view into HAB

First frost at Fermilab

Fallen leaf and reflections on a breezy day at Fermilab.

Original gaslight with mantels near the Curia/ daycare areas

Brian Yanny plays piano while he and Bruce Brown practice a song together.

Outbound Pine Street fall colors

Standing behind Lab 5 in the Fermilab Village, I see this beautiful view of the morning sun shining on Lab 6. Used my iPhone SE to snap this photo.

Fall colors near Pine Street

Al Moretti retires after over 30 years of service at Fermilab. The reception is in The Huddle.

Ewa Skup learns you can fry slices from the pufferball mushrooms that pop up locally during rainy season.

Bradford Benson, of the Particle Physics Division Astrophysics Department, installs samples to test in the cryostat.

After a long dry spell, the rains return in force to Fermilab. Todd Nebel is clearly worried that the rain may not stop!

Rainy Monday in the woods at Fermilab

Underground tunnel from the Cross Gallery to Wilson Hall

Bert Gonzalez, on left, and Israel Hernandez Alatorre are both going to the Lab D cleanroom to work on MKIDs project. Bert is holding an MKIDs test module. #MobileMonday

A course given by Enrico Fermi at the University of Chicago January to June 1949.

The sun was out for only a very short time, and it was gray and rainy the rest of the day.

With Fermilab's iconic power poles in the background, a farmer harvests their crop, grown on the Fermilab site.

Cindy Joe demonstrates the right-hand rule to the Saturday Morning Physics students in One West while Adam Anderson controls the helmholtz coils and a video camera projects Cindy onto the big screen.

Autumn color

Carl Lundberg, left, and Troy Petersen of the AD Instrumentation Department examine the final installation of the new Booster IPM at Long 4.

Henna tattoos at the Fermilab Diwali celebration.

Diwali group photo taken during festivities at Kuhn Barn.

Photo taken during Diwali celebration at Kuhn Barn. One of the many traditions of Diwali is to apply henna temporary tattoos.

Cormorants on tree adjacent to Swan Lake

Indian community and Global Services. The youngest of Fermilab families celebrated Diwali by making a rangoli-inspired craft with rice, beans and lentils. It was a colossal mess, but look how happy they are.

Shirley Nannini and Candace Wark, artists of "Viewing Silence" on display in the Fermilab Art Gallery, and their many friends.

Karl Warburton, Jennifer Raaf and Maxine Hronek enjoy working on DUNE.

Currently starting to demolish #151 trailer near DZero Assembly Building.

As we face the bison barn from the side of Pine Street, three centuries are represented: agricultural, technological and Buick.

The lab has a combine that it uses to harvest some of the prairie plants. The cutting head was held high, and the combine drove in a seemingly random pattern in order to collect specific plants.

Bobby Santucci in the Main Injector tunnel.

Red-tailed hawk flies over NML Building.

Particle Physics Division Head Patricia McBride starts off the PPD All-Hands meeting with praises on the 50th Anniversary Open House, PPD experiments and the overall great work done by all the PPD employees through out the year. The meeting ends with a pizza and cookies lunch ... now that's my kind of meeting!

Tom Kobilarcik, left, discusses operations after the 9:00 meeting.

Beautiful October day and lunch outdoors sounds like a great idea. Seated across from his wife Silvia, Gustavo Cancelo from the Scientific Computing Division enjoys the lovely weather with her and visiting friend Horacio.

Dozens of cormorants out on Swan Lake

While walking on my lunch break, I spotted a baby snake on Batavia Road by the shoulder of the road near driveway of Site 38 Warehouse II Building.

Fermilab social media pundit Lauren Biron ponders the pristine prairie (and perhaps plans her next post?). #alittlealliteration

Joseph Joe Laccone from Security checks me back in to Fermilab. #MobileMonday

Technical Division's Frank McConologue, left, and Tom Nicol out for a lunchtime walk on a beautiful fall day.

Fog over the Main Injector as seen from Wilson Hall.

Wilson Hall on a beautiful fall day.

Sunday afternoon Bubble Chamber visit with these youngsters. What did they say when they saw the Bubble? "THAT'S COOL" — what else!

This red-tailed hawk doesn't mind the rain, or me for that matter!

Girl Scouts visit ROC West and learn about neutrino experiments from Kanika Sachdev.

Wood ducks sitting on a log enjoy the duck-like weather.

Ron has been coming out to Fermilab to use the Dog Training Area for years. Augie, his Brittany spaniel, named after Augustana College, finishes up his 6-mile run and is a satisfied 6-year old pup!

Wally Kissel, left, and Steve Hahn are great buddies.

Coming in Pine Street just after sunrise, looking over the ponds in front of the high-rise.

The Festival of Lights Committee met to finalize preparations for next week's Festival of Lights Celebration. Please join us at Kuhn Barn next Friday, October 20, at 5:30 p.m. for authentic Indian food, Dandiya dancing and other fun activities!

This caterpillar was gathering sun rays during the lunchtime hour. He is about two-and-a-half inches long, and we carried him to safety.

Long may she wave!

Lunch time in the Wilson Hall atrium

This is Carla Bonifazi, a visiting scientist from Federal University of Rio de Janeiro, Brazil, working on CONNIE and SBND with Juan Estrada and others at Fermilab.

Stefan Gruenendahl sits in the Lab C clean room and is bundling and reorganizing the wires into bundles by module - "it was just getting too messy" he said.

Steve Holmes, project manager for PIP-II, introduces the project to the Director's Review Team in One West.

Columbus Day. This means an empty microbonding cleanroom at SiDet because parents are home with their kiddos. Happy Columbus Day! Mobile Monday

Driving around by the bison area and saw this view and just had to stop to take a photo of it. Fermilab all lit up.

Wood duck in golden light at Main Ring pond.

A board used for counting electronic pulses

A new exhibit is installed in the Fermilab Art Gallery. Photographs by Candace Wark and Shirley Nannini.

The Saturday Morning Physics tour ends with questions and answers in the atrium.

Elliott McCrory presents a lecture on modern physics, focusing on special relativity, to the Saturday Morning Physics students. One-hundred forty students have registered for this semester of SMP.

Site 67 seen from NML

Charmonium experiment E-760 / E-835 at AP-50 ex Antiproton Accumulator, 1990-2000.

Duane Newhart, foreground, and Dan Johnson busy running the Operations Department in the Accelerator Division.

From left, Christopher, Saul and CraVon, and the rest of this class from Henry W Cowherd Middle School in Aurora, Illinois, enjoy a fantastic October day studying insects they catch on the Fermilab prairie.

October colors at Fermilab.

Waiting out the - what is that stuff? Rain. We haven’t seen rain in a long time at Fermilab.

What a great group of workers! Thanks, Art Gallery Committee, for your hard work! Pictured are Margie Nagaitsev, Anne Mary Teichert and Ana Zanic.

What did one ear of corn say to the other ear of corn? It looks like something is stalking us! I know, it’s corny.

These common asters attract these yellow butterflies.

"Paul Czarapata" by Elliott McCrory

Victor Yarba, right, Technical Division associate division head, is shown here with Andrei Lunin, one of the division's senior engineers in the SRF Development Department.

Carrington lives near the lab and brings her pup Archie to the Dog Training Area at Fermilab.

My last sunset at Fermilab, the end of a wonderful experience.

Sunrise over Lake Logo

Cubs and Boy Scouts participate in STEM-O-Rama at the Sandwich Fair Grounds. A member of the Alignment and Metrology Department from Fermilab demonstrates how to align a quadrupole using a laser tracker.

Dan Hooper of the Astrophysics Department begins the 38th year of Saturday Morning Physics. 136 high school students signed up; 90 came to this first lecture.

Janet MacKay and Georgia Schwender prepare for the World Guitar concert.

A cyclist takes a break at Fermilab just after sunrise.

This large set of cutters, affectionately known as the Master Key, is used to remove padlocks under certain specific circumstances.

The Lake Law area is a lovely spot for Lidija Kokoska, a mechanical engineer in Technical Division, to play her electric guitar at lunch time.

Beautiful sunrise. Anything is possible today.

Cruising through the parking lot!!

Romesh Sood, Technical Division associate head, for having TD's lowest badge ID number. Romesh has been with the lab for about 45 years and has helped tremendously in TD's recent renovation projects, which were featured during our Open House event!

Accelerator Division electrical engineer Alexei Semenov is surrounded by computers, screens, oscilloscopes, probes, reference manuals and hot tea.

To stay safe, they keep in practice with the fire drills. Nice day for it too.

An afternoon in the Fermilab Library.

It's another Linac modulator, Station 3, being dismantled to be replaced my a Marx modulator.

We demonstrate to STEM students the techniques used for metrology and alignment here at Fermilab. This shows a working model that students will use to see how to measure geometric features and align the quadrupole to a beamline.

Big equipment used over by Casey's pond - MobilePic.

Praying mantis on the Feynman Computing Center window.

Clouds before the sunrise

Chicago Blackhawk legend Denis Savard shows off his NHL Stanley Cup Championship ring to Fire Department Lieutenant Bryan Needham.

Amber Scroggins was so excited to wear her new shirt to school on Monday that she said, "Send that to Fermilab, mommy" as I took this picture. Future scientist perhaps?

Praying mantis near the Print Services area on the Wilson Hall ground floor.

King, from Franklin Park, fishes on a hot day.

Evidence of the tent pegs used to secure the large tent outside Wilson Hall.

Sunday morning nature fix

Zoltan Gecse is in Lab C and talks about the Higgs boson discovery. Fermilab Open House at SiDet.

Most folks headed directly to the atrium to get tickets for Mr. Freeze or the 15th floor tour.

A member of the Fermilab Society of Women Engineers explains the beam pipe exhibit to a curious visitor.

Kevin Kuk introduces himself then welcomes them to the Silicon Detector Facility.

Eileen Crowley, left, and Patty McBride are the gatekeepers for entry to the CMS Remote Operations Center during the Open House.

SiDet Open House group picture before the crowds came.

Louis Suter presents a live video feed from the MINOS Near Detector Cavern to Open House visitors on the surface.

Michael Wesley talks to an Open House tour group about the Main Control Room.

I was at the Open House, see??

Sandra Lee is happy to be giving out Mr. Freeze tickets in the Wilson Hall atrium.

The initial crew of tour experts for the CMS Remote Operations Center East: Front row: Seyda Ipek with her new Higgs Boson tattoo; Pushpa Bhat; Kaori Maeshima; Jen Adelman-McCarthy. Back row: Richard Carrigan, Eileen Crowley, ____, and Patty McBride.

The orange route buses dropped off folks for the SiDet tours.

Guram Chlachidze explains the science behind the Fermilab logo during the Open House.

The Kindness Rocks project made it to Fermilab during Open House.

So it begins!

I dressed up my nails to match the theme of the day.

Sun sets, marking the end of the Open House.

Hema Ramamoorthi, left, and Fermilab Director Nigel Lockyer are ready for the Open House.

How to secure a really big tent Wilson Hall parking lot.

The a.m. crew at the Technical Campus ADA West tent prepare for visitors!

Don Lincoln talks to Open House tourists about CMS.

Taking a selfie with Reidar.

COOL!

Julius Borchert, Mary-Ellyn McCollum, Andrew McDaniel, Kimberly McDaniel, Maredith Stoffel, Sabina Aponte, Margaret LeKander, Gayle Millman, Wanda Newby, Leah Turner.

Wanda Newby keeps smiling as the crowds keep coming to buy Fermilab Open House t-shirts.

This little guy is smiling with excitement.

As the Open House tour of the Linac ends and visitors exited, this is the stunning view they were greeted with.

Escorts Stephanie Timpone and Gustavo Cancelo await their groups.

Sten Hansen talks about the Bubble Chamber at SiDet.

A young Fermilab fan (check out the t-shirt) examines the 3D-printed model of a magnet support at the Fermilab Society of Women Engineer's table at the STEM fair.

Young scientists enjoy the STEM fair at Fermilab's Open House.

Stage in the welcome tent and line of buses ready to pick up and welcome the visitors of Fermilab's 50th Open House

The South Pole Telescope station at SiDet, run by Brad Benson, have the folks fascinated!

Open House SiDet tours

Fermilab Open house SiDet tours

People come and go with a smile

Stations at SiDet for the Open House

Group photo after the Open House

Fermilab Open House at SiDet

Sabina Aponte and colleague work the t-shirt desk at the Open House.

Neutrino detector technologies seemed to capture this Open House guest's attention.

Andrew Norman leads a tour of Open House tourists in the Remote Operations Center West.

Rich Schmitt talks a little bit about dark matter.

Saturnino Villa finds a spot in the shade to get some relief from the heat.

Reidar Hahn prepares for the craziness of the day!

Line of buses ready to pick up and welcome the visitors of Fermilab's 50th Open House

Q&A time at the Fermilab Open House at SiDet

A group of workers — Colleen Yoshikawa in the middle — await the crowds who want to see Mr. Freeze in the auditorium.

At the Open House, a visitor takes a shot of the impressive Wilson Hall.

Reidar Hahn and Ian Krass capture the beginnings of the Open House in ROC West.

Fermilab Open House at SiDet, enjoying the photo booth

Pat Lukens talks about detectors at Fermilab.

The Wilson Hall atrium was packed with lunchers during the noon hour of Open House.

Open wide, hon!

Pano shot of the Open House SiDet tours.

Rick Ford chats with Open House attendees at the Fermilab Open House at SiDet.

Jen gives Nigel an "I love Higgs Bosons" temporary tattoo in ROC East.

Almost immediately after I took this photo a World War II poster "We Can Do It" by J. Howard Miller that was done for Westinghouse came to mind. Pictured here are Louise Suter, Anne Norrick, Laura Fields and Kanika Sachdev at the MINOS Building for the Open House.

The atrium is ready for all the folks who want Mr. Freeze tickets during the Open House.

Jerry Zimmerman, aka Mr. Freeze, did four shows during the Open House. And each one filled Ramsey Auditorium.

Alyssa Miller tells a group of Open House tourists about the ins and out of the Main Control Room.

Alyssa Miller tells an Open House tour group about the Recycler and the Main Injector.

Mike Crisler talks about the history of the Bubble Chamber.

"Make sure that's in the background," said Jodi Coghill and Helen Szuba, referring to one of Fermilab's famous sculptures, Tractricious.

The Bubble Chamber was known as the Bubble to many of the folks.

Live video feed from MINOS Underground

A boy poses for his mom to get a picture in front of one of the Fermilab Linac's 7835 power amplifier tubes during the Open House.

Trevor Butler of the Linac Group tells the Open House tourists about the equipment in the Linac.

Cameras everywhere, it was great!

Fermilab Open house SiDet tours

Look at me, mom!

Kevin Kuk welcomes and escorts a group to the first station, The Bubble!

Juan Estrada talks a little about the Dark Energy Camera and CCDs.

Etta Johnson decided to enhance her orange attire for the Open House.

Information tent ... handing out freebies!

In line to board the bus and start the tour during the Open House

Enjoying the beauty of Wilson Hall while waiting for the 50th Anniversary Open House to begin.

The auditorium stage is set for Mr. Freeze during the Open House.

Meiqin Xiao applies a Higgs boson tattoo to the hand of an Open House tourist in the ROC East.

Elizabeth Alvarez, the better half to AD engineer Matt Alvarez, and her baby are enjoying the Open House. Well, at least Beth is.

Hanover Park Fire Department cooling mist station

Panoramic shot of guests in line to enter Fermilab's 50th Open House

Donna uses these beach balls to share fascinating info at the Open House.

Giorgio Bellettini talks a little about the top quark discovery and the Tevatron.

Kyimoi Seiya and Edgar prepare to put up the welcome mat for the Linac tours.

Gaston Gutierrez talks about the Dark Energy Camera, one of the stations in the SiDet tours.

Gary Teafoe gowns up to work in the Lab C cleanroom.

A young woman shows great enthusiasm for the displays in the Wilson Hall atrium during the Open House.

Women Engineers booth's morning shift awaits visitors to the Chicagoland STEM Fair.

The Fermilab Society of Women Engineers, or fSWE, booth at the Chicagoland STEM Fair is ready for visitors.

The very first tour of the Bubble Chamber for the Open House at SiDet.

Fermilab firemen Greg Hansen and Eliseo Anaya man the first aid station.

Fermilab engineer Mayling Wong-Squires answers questions for a group gathered at the Fermilab Society of Women Engineer's table at the STEM fair.

Fermilab Open House at one of the SiDet stations

From the Neutrino Campus portion of the Open House

I met Duane and Shirley Bartelt. Duane was born in Weston, Illinois, now Fermilab! He was 10 years old when the original residents of Weston relocated to Dixon, Illinois. He also told me that the old residents still have annual reunion at the Kuhn's barn. It was a fun day!

Me and the Red Bus tour guides coordinator, Greg Gilbert.

Me and fellow volunteer Matt Alvarez!

I was a volunteer bus tour guide at the Fermilab's 50th Anniversary Open House. I met a lot of people and I talked a lot. It was hot all day but it was fun! Me, the tour guide, and my 79-year-old bus driver Tom at the Fermilab's 50th Anniversary Open House on September 23!

I was a volunteer bus tour guide today at Fermilab's 50th Anniversary Open House. I met a lot of people and I talked a lot. It was hot all day but it was fun!

Maxine Hronek and dummy normally employed by Radiation Safety for a search-and-secure routine, but she borrowed it for use during Open House.

"Fermilab 50th Anniversary Open House Guests @ MINOS Building" by Gordon Koizumi The number of 50th Anniversary Open House guests at the MINOS building swelled in the afternoon. People everywhere! These two young boys were too short to see the NuMI horn that Debbie Harris was talking about since grown-ups blocked that view. Instead, their attention was focused on a different display partially behind the camera. The display behind the camera seemed to have caught the attention, especially of the younger of the two.

A future Fermilab employee examines a 360-degree virtual view of Fermilab at the Open House.

Families flock to the Fermilab Open House at SiDet.

For the first time in years, the Eola gate was open to traffic!

This cool banner of the CMS detector drew people in.

Sandra Biedron talks to visitors about Enrico Fermi and his connection to Fermilab.

These two stop and examine the film.

Fermilab engineer Lucy Nobrega explains accelerator components to a group of children at the Fermilab Society of Women Engineer's table at the STEM fair.

End of the Open House tour now waiting for the Orange Route bus.

Everybody wants to see Mr. Freeze today.

Direction signs were all around Wilson Hall for the Open House.

Gonzalo Diaz Bautista of the University of Rochester shows how the light fibers in NOvA work to tourists at the Open House.

A family tries to decide exactly which Fermilab 50th anniversary t-shirts to buy.

Dave Johnson, in the Main Control Room, knows how to wear the orange of the tour guides.

Tourists at the Open House hear a little bit about the Dark Energy Camera.

Computer expert at the Open House

The CMS photo booth was loved by kids of all ages.

This young girl is enjoying the Open House at Fermilab, especially the photo booth!

Folks love a photo booth!

Cindy Joe points out the camera location underground where live video feed is taking place at the MINOS Near Detector Building.

After a long, hot day of celebration, it is good to relax and get to know peers from across the lab!

Tippy toe and say cheese please.

Sheila Cisko checks in with Facebook — I am at the Fermilab Open House.

Anadi Canepa, of Fermilab's CMS group, talks about CERN to a group of Open House tourists.

One visitor came all the way from California to experience the Open House.

T-shirt group works to fill orders. #Fermilab 50th

Busses are ready to roll!

Pat Poll, on the right, will greet folks getting off the Orange Route bus to tour the Silicon Detector Facility, and the Bubble, as they called it.s

A souvenir of the 15-foot Bubble Chamber and an image of particle interaction first tracks were handed out at the Fermilab Open House at SiDet.

Steve Gould was brimming over with enthusiasm as he explained what he does at Fermilab.

Bison up close!

The bison experts

Watching the bison come up to the fence before the crowds came

The Ask-A-Scientist representatives are busy talking to Open House attendees.

Have a question, ask a scientist.

Scientists are ready to answer questions at the Open House.

Artur Apresyan talks a little about the Higgs boson discovery.

Tanya Levshina shows how the eddy current works with the sculpture.

Jim Jenkins, 2017 artist-in-residence, and Lindsay Olson, 2015 artist-in-residence, work at the Open House.

Artist-in-residence Jim Jenkins demonstrates the eddy current sculpture at Open House.

Gaston Gutierrez talks about the Dark Energy Camera, one of the stations in the SiDet tours.

Is everything OK on the home front? Email is clear, so I think we are ready to start the Open House.

Alan talks a bit about the history of the Bubble Chamber.

CY Tan of the Linac Group did an excellent job describing the Linac to the Open House tourists. He was pretty funny!

Karl Williams was so busy with his presentation during the Open House that he had no idea I was taking his picture.

K-9 unit taking checks things out!

Christine points out some interesting info from the film that records the particle interaction from the Bubble Chamber.

This sight can bring terror to the hearts of students.

Wow, they are still coming. This is amazing!

A beautiful Friday.

Near the bubble chamber, this guy was out of place on this hot day.

If you build it they will come.

This aquatic turtle was seen in the AZero parking lot.

Particle Physics Division Head Patricia McBride beams as she tries out the CMS Detector Photo Booth, which people will be able to enjoy at the end of their SiDet Tour at the Fermilab Open House. #MobilePic

Troy Petersen, Bill Dymond, Carl Lundberg and Bob Steinberg, left to right, reinstall a Recycler Ring ionization profile monitor after preventive maintenance.

Bet you'll never see the Wilson Hall parking lot looking like this at 8:30 on a weekday morning again.

Open House run-through at SiDet. Barb Kristen, Particle Physics Admin Team, looks at the film souvenir of the image of particle interaction from the first tracks, recorded Sept. 29, 1973, from the 15-foot Bubble Chamber, which now sits in the SiDet courtyard.

As autumn sets in, it is time for many visiting students to return to their universities and homes. Lessons have been learned, experiences had, and friendships made. The youthful exuberance of summer students is always a shot in the arm. Good luck!

Yellow fields from Batavia Road

Bert Gonzalez sets things in order for the Fermilab Open House. Only three more days!

Sunrise from Site 38

The preparation for the Open House continues. In my nearly 20 years at Fermilab, I must say our lab has never looked better. Roads and Grounds is just knocking it out of the park right now, as well as many others.

Barb Kronkow preps Open House gear.

Nice day for a flight.

Time to pick up my volunteer stuff for Saturday's Open House.

A dramatic sky on a beautiful afternoon, as seen from the Main Ring.

A different view of Wilson Hall.

Wayne Shaddix unloads traffic cones in preparation for the Open House tours at SiDet, now only four days away.

Craig Bradford traveling in the Main Injector at "warp speed."

Preparing for Open House workers to pick up parking passes, t-shirt and ID.

Dusk at the garden

Autumn leaves in sunlight

Another beautiful morning at Fermilab

Silhouetted heron through the grass

Sun-filled day. Time to get a picture at Fermilab.

How peaceful everything is at night.

Fall colors at Wilson Hall

This central tracking chamber was the central portion of the CDF detector, which at one time sat in the Collider Detector Facility, aka CDF. For the time being this cool piece of Fermilab history sits in Lab A at SiDet.

A colorful tree near the Lederman Center

Wilson Hall encapsulated by the quietness of fog.

These yellow coneflowers stand tall by soaking in the morning mist.

Down is up. Up is down. Such is life with Inverted Goose in town.

Wilson Hall hidden in the mist

Bison wandering around in the fog

Eating lunch outside at Wilson Hall with an unannounced but welcome guest.

Why did the turtle cross the road ...

Main Injector scientist Bruce Brown in his Cross Gallery office.

Seeing the bison herd grazing in the fog made me stop. Usually when you stop by a herd of cows, they tend to come towards you. This herd did the exact opposite when I approached them. I consider myself a friendly human, and I just wanted a good picture from up close, so I was rather miffed by this reaction. However, considering that once upon a time they occupied all this land, and we humans brought them to near extinction, I have to concede that they are right to stay wary of me.

Rick Espinoza assembles the IOTA beamline.

Contract worker paints the man door in Lab C at SiDet.

Architect Andrew Federowicz prints the Muon g-2 ring in 3-D.

Roger Dixon relaxes in his Accelerator Division office.

Sunset over the prairie from the start of the trails

Every living critter is still out on this foggy morning.

Although it cannot be used in any vacuum system because it is plastic, this prototype will test the geometry of a vacuum seal design. This SLA 3-D printer uses a laser to draw the shape of the part in the resin to create the prototype.

Accelerator Instrumentation Engineer Jim Zagel in his Transfer Gallery office.

Fermilab Fire Department personnel

Fermilab Fire and Paramedics

The mink that's no longer missing.

Early morning is the most beautiful time of day here.

Foggy pond bank in morning sun

Fall begins to colorize Fermilab vistas.

Near Site 56

Dave Andersen of the Badging Office from our perspective.

Fermilab's Open House is just a couple of weeks away, and scientists, engineers and other folks prepare for the hundreds of visitors who will enjoy hearing about the Bubble Chamber and other cool stuff at SiDet.

It's beautiful.

Maral Alyari, on right, listens intently as Mike Roman has questions regarding the Open House SiDet tours.

Derek Piec of the Fire Department shaved off his mustache!

The clouds of The Simpsons over Wilson Hall

In the foreground is the Tevatron Ring, then the treeline along Eola Rd. After that is Warrenville, Wheaton, Glen Ellyn, Lombard, Villa Park, Elmhurst, Oakbrook Terrace "T" Tower obstructing Sears Tower, Hillside, Bellwood, Maywood, Forest Park, Oak Park, and Chicago ... then big clouds over Lake Michigan.

Niral Patel, left, and Troy Petersen are the newest engineering in the Accelerator Divison's Instrumentation Department.

ICARUS

Daniel McNeel, far right, and Sean Kuvin of Argonne National Laboratory get help on HELIOS experiment modules from Tamara Hawke at SiDet.

Flags fly proudly in front of Wilson Hall.

Kirsty Duffy and Leo Aliaga Soplin rehearse their spiels at the Fermilab 50th Anniversary Open House dry run at the MINOS Detector Building.

Double rainbow and the Bubble Chamber

Looking east from Wilson Hall.

Interesting clouds appear on the horizon east of the BEG building.

"An unexpected guest traveling with us on site" by Marcus and Emrah

Mr. Froggy sits there keeping a watchful eye on me.

In this picture, Adam Anderson of the Particle Physics Division Astrophysics Dark Matter and Initiatives Group is setting up and testing readout electronics and detectors that will be deployed on the South Pole Telescope in November of this year.

Nice walk towards IARC Office, Technical and Education Building

The green heron is keeping a watchful eye on me.

Turtle on Main Ring Road near C-3.

Amana orange, Kellogg's breakfast, oxheart, to name a few.

Fermilab family enjoys the holiday.

Enjoying the bison

Enjoying the Showing out-of-town family around Fermilab

Thistle blossom with some insects.

Hawk watches over Eola Road near the control gate by Site 3

A couple of deer out for a stroll.

Mr. Froggy went to the Green Heron's place for breakfast and was the breakfast.

Dipole magnets in the MI60 high bay.

is beautiful

A foggy morning at Technical Division

A bee harvests nectar.

The garden by the Village barn is a purple haze of flowers.

A nifty little Mazda RX5 two-seater is parked near Wilson Hall, which is reflected in the hood.

Newly waxed hallway in front of the Main Control Room shows light reflections.

Have a great Labor Day weekend!

Julie Vander Meulen enjoys the Technical Division annual picnic.

Flowers in the grass.

Ryan Campbell helps volunteers identify and sort seeds for planting on the prairie.

Sunflower and the pollinators

On right, Mike Roman of the Particle Physics Division Detector Development and Operations Department and Dylan Frizzell from Argonne National Laboratory work on measuring pixel sensor modules for ATLAS in the Lab C cleanroom at SiDet.

50th Anniversary Planning

At Playgroup, Anna Elementi decorates an owl with beans, lentils and rice during craft time. Playgroup meets every Wednesday in the Fermilab Village. Everyone is welcome.

Compass flowers are blooming en masse around the site right now, and the pollinators are out in force! This picture was taken on the Main Injector road between MI10 and MI20 using my phone.

View from the top of the Bubble Chamber

Praying mantis looks like it is all hopped up on Mountain Dew!

Batavia residents enjoy a quick game of hide and seek.

Foggy Fermilab sunrise, west entrance

John Najdzion (using the power washer) and Adrian Marquez, both of the Particle Physics Detector Development and Operations Department, work on making the Bubble Chamber, in the SiDet courtyard, shiny and bright by giving it a power-washing bath.

This comic was found on the whiteboard in the cafeteria. Fermilab folks can be very creative!

This is a view of the NuMI Target Hall taken from atop the workcell looking upstream. The shielding blocks over the tops of target and horns' respective "T-blocks" are open in preparation for survey and alignment and electrical work. All of this work is part of the 2017 summer accelerator shutdown period for maintenance and development. Several technicians, engineers and physicists have completed jobs in this enclosure, which is over 150 feet underground. I took this photo with my phone toward the end of the day.

Ryan Frantzen, left, and Martin Valenzuela remove some branches from the trees outside Ramsey Auditorium in preparation for the Open House next month.

What do you see between the trees? The high-rise of course. You can see the high-rise from many areas on site.

From Jim's garden at Fermilab

Adam Lister of Lancaster University in the UK sits shift for MINERvA in ROC West on a quiet Saturday afternoon.

Lily ponds near DZero

Olivia Lahs-Bour stands next to the Fermilab logo created by Angela Gonzales, her mother.

The beans at the photographer's garden plot in the Fermilab Garden Club are ready to pick.

Is it an outhouse or is it the burned vacuum circuit breaker cabinet at MI-60?

Daily sunrise pic

These blue cornflowers adorn the roadsides and fence rows every summer and early fall.

Hard rock concrete cutters work at removing concrete and steel pillars that once held up the Bubble Chamber in the Lab B pit at SiDet.

View from Wilson Hall

Can't get enough of this sculpture.

SBN-ND Building

Walking toward IARC...

daily pic

Question: Category: Jobs for $50..."while at work I hang out and keep all my tools within arms reach." Answer: What is a Wilson Hall window washer?

Take 5 for safety

Mr. Froggy sits in the early sunlight waiting for breakfast to fly by.

From left: Renan Silva Soares, undergraduate from the Universidade Federal Do ABC, Brazil, and Dante Totani, Ph.D. student from University of L'Aquila, are testing a SIPM, or silicon photomultiplier, a part of light detector for the DUNE experiment.

I was walking to the car when I noticed this bee on a flower outside of MI65. Took the picture with my phone.

Wilson Hall is dwarfed by giant plant-life.

Great day to do windows!

Take a little walk down the lovely Margaret Pearson Memorial Trail, also known as the Fermilab Interpretive Trail. You'll love it!

Osprey searches for next catch on Ring Road.

Wilson Hall eclipse over window washers.

Some of the Technical Division's brightest stars gather to watch the solar eclipse!

A group of Fermilab employees and users watches the eclipse from the courtyard outside the cafeteria. The sun, partially covered by the moon, is visible also on Wilson Hall windows.

The ICARUS trip!

21-inch smallmouth bass

Eclipse through the clouds behind Wilson Hall.

Kevin Fahey, Jack Fowler, Jim Niehoff, David Montanari, Chris Mossey, and Jolie Macier (left to right), look upward to the eclipse during a break at an LBNF design review at the Sanford Underground Research Facility in Lead, South Dakota.

Intermittent image due to cloud cover, but when it was mostly clear we could watch the clouds pass across out line of sight to the sun. The video is awesome I took with my phone!

A cloudy sky allowed to see the slice of the sun on Wilson Hall's partially reflecting windows.

Monday's solar eclipse, reflected through the two lenses of a pair of protective sunglasses.

People watch the solar eclipse in front of Wilson Hall.

Waiting for the total eclipse on a mostly cloudy day.

Frog in pond on Ring Road.

Little do the citizens of Earth know that in less than 48 hours, the moon will be blocking, for a moment, the source of their heat and light.

Sunrise Eola Road.

Artwork by Angela Gonzales

David Butler shows off the walk-in oven at Lab 3 in the Village.

Phil Crabtree and John Anderson III show off the enclosure keys they needed that day for vacuum work they were doing.

In response to my picture with Phil and John with all their enclosure keys, John took this photo and said: "We decided to get some blue and purple keys."

A bumblebee visits flowers behind Aspen East.

A fun crew Friday Night for the party, "In Front of the Barn"

The Particle Physics Division have their picnic today at Kuhn Barn. On the right, Patricia McBride, head of the division, welcomes folks to the picnic. Dee Hahn, PPD/DDOD; and Callie Surber, PPD Office, hand out raffle tickets.

SUSY Swan, new Fermilab Theory Department mascot, watches over the Director's Coffee Break.

Aleksey Akimov carefully installs a 3.9-gigahertz superconducting radio-frequency cavity into the Horizontal Test Stand at MDB.

Evening at the pasture

Beautiful view from east Booster parking lot.

Tyler Drendel works on Muon Campus instrumentation devices, including PWC proportional wire chambers and ion chambers at NWA.

Getting ready for the eclipse on Monday. Using a transit to project the image of the sun onto a pad of paper. Basic concept works ... now it's time for some refinements to the apparatus before the big day!

Wilson Hall and the new lily pads

Wildflowers

Life in the village.

A beautiful start to the day as the sun comes up over the fields by Wilson Street.

Geese on the tennis courts after the rain

The LHC Physics Center guest and visitors from Texas Tech University, along with Zotlan Gecse and Maral Alyari from Fermilab, work in the Lab C cleanroom at SiDet. They are working on the CMS testing Co2 cooling performance of the cassette for the CMS high-granularity calorimeter. From left: Samila Muthumuni, TTU; Tielige Mengke, TTU; Zoltan Gecse, Fermilab CMS; Kamal Lamichhane, TTU; Maral Alyari, Fermilab CMS.

This willow tree at Site 58 has the prettiest twist to it.

The Fermilab gym recently acquired some new equipment, including this squat rack. It's the best!

Morning walk in foggy sunrise

Armando Barboza polishes vacuum flanges on PIP-II 325-MHz superconducting half-wave resonators at Lab 2.

Matt Crawford of Fermilab, Barry Glicklich. In the background, the gamer on the far right is Bill Tannenbau. On the far left is Howard Sanders.

Dana Smith of the carpenter shop fixes up a small conference room at Site 38 OPS.

Alignment of the LCLS-II cavity string to vessel

Rise and shine!

Bob Barger performs instrument calibration at PAB.

Luna moth on the ground just outside of AZero. Credit to Matt Alverez for pointing it out and not accidentally stepping on it!

Monday morning

Cloud reflections

Bison eat in the evening while the sun is peeking through the clouds.

Baby swallows wait for the parents to return at AP0.

Beetle-like creatures swarm on a daisy-like weed in the wide median on Pine Street. Wilson Hall is in the background.

Fermilab Garden

I've always enjoyed that Fermilab continues in its Illinois heritage by allowing the use of part of its open space by local farmers to grow and harvest corn and beans.

Guess where.

Welcome to the world Baby #11!

Main Ring Pond near C-0

Fermilab Photo Club celebrates its 50th anniversary today at the Water Street Studios exhibit opening. The studios feature photos that have been taken at Fermilab by many of the Photography Club members.

The opening reception for the 50th Anniversary Fermilab Photo Club Show at Water Street Studios in Batavia.

Early morning before the moon had set.

Wasp of Fermilab Fire Department's glass firetruck.

Patience abounds while waiting for wildlife.

Sump in pbar

The yellows, purples, pinks and whites of August.

Ryan Kos, vet tech intern, works on the Linac Marx generator.

ICARUS has arrived!

The face only a mother could love.

Momma bird waits for me to stop taking pictures of her babies so she can feed them. SiDet residents.

A beautiful sunrise

Ring ride at lunch time. I love the contrast in colors between the sky, clouds and greenery.

Dew on ornamental grass sparkles in the morning sunlight.

The path was busy on this beautiful day!

Looking northwest

Dr. Don Lincoln, Fermilab physicist, concludes the Undergraduate Summer Lecture Series on "A Theory of Everything: Are We There Yet?"

Naked Ladies aka surprise lilies, Lycoris squamigera planted in front of The Outback at DZero

Why dragon fly when you can dragon sit on a bench?

One of hundreds of bees on the Russian sage along the Outback at DZero.

Spotted in Wilson Hall cafeteria, east side

The morning sun on the evening moon flower at The Outback

The full moon is visible between the branches of the willow tree next to Batavia Road.

So many cool looking things at SiDet. I asked Javier Tiffenberg of the Particle Physics Division Astrophysics Department what this is. He explained to me that this is an engineering replica of the Dark Energy Camera focal plane. It was used during the construction of the DECam instrument that is installed in Chile in the telescope that is being used for the Dark Energy Survey. #MobileMonday

Flowers outside of Wilson Hall on the east side.

A parent osprey sits in a tree while a juvenile flies around asking for food.

Heron on Outer Ring Road

Zucchini plants in the Fermilab Garden

Today participants of the past week DPF meetings and Fermilab employees tour different labs at SiDet, ending with some sorbet and a group picture in front of the Bubble Chamber.

Last day of Phriendly Physics Teacher Workshop.

Phriendly Physics Workshop toured the IB3 facility. This is part of the magnet assembly process.

One of today's DPF speakers in 1 West was Enhao Song from the University of Virginia. He spoke on "A Neural Network Trigger for Magnetic Monopoles with the NOvA Far Detector."

Collecting seeds for prairie restoration with Fermilab Natural Areas volunteers.

Walking the Main Ring at lunchtime, we saw these lilies in a Main Ring cooling pond.

Doug Berry of the University of Illinois at Chicago gives a talk on behalf of the CMS collaboration.

Butterfly hanging around Playgroup at Kuhn Barn

... flock together.

Tony Tong, from Harvard University, enjoys todays physics talks at the DPF 2017 meetings.

I was on the back of a golf cart when I took this picture when I was inspecting the F Sector conversion from ion pumps to turbo pumps shutdown work in the Tevatron tunnel.

The 2017 Division of Particles and Fields meeting is held this year at Fermilab beginning July 31 through August 4, 2017. Here Keisuke Yoshihara gives a 10-minute talk on particle physics at today's start of the DPF meetings.

Blooming American lotus and a glimpse of Wilson Hall

Flowers of the compass plants along the path between IARC and Wilson Hall on a beautiful Sunday evening in July.

A Saturday morning gardening, organic and mostly heirloom.

The one in the front is a cryogenic magnet, and the two behind are helium refrigerators. They caught my eye when I walked into Lab B.

Early morning light on the Ramsey Auditorium and Wilson Hall

Looking like a leaf in the middle of Blackhawk Boulevard in the morning is dangerous business! This one was helped reaching closer to Dusaf Pond.

ICARUS is now at Fermilab!

Feathers and egg

This caterpillar decided to cross Main Ring Road during lunch. We carried him to safety.

A lovely site at Aspen East on a beautiful summer's day.

Jim Annis of the Scientific Computing Division points out something interesting in his talk on the LIGO experiment and related cosmological ideas. The audience is undergraduate interns at Fermilab. The three students in the front, just behind Annis, are Andrea Bryant, Kevin Ingles and Leonardo Rodriguez.

A group of students take some time off from their tour to relax in front of Wilson Hall.

ICARUS heads toward the Neutrino Campus.

Just listen...

At lunch I sat and admired this beautiful barn.

Robert Barger, on left, of the Neutrino Division Technical Support Department and Greg Tatkowski of the Particle Physics Mechanical Department discuss hooking up a temporary Dewar at SiDet.

Underground Utilities

Fermilab intern Marika McGee shows off her new, Fermilab-themed fingernails.

This amphibian visitor was found in the ladies' washroom at SiDet. Cute, isn't it!

Martha Michels, Dave Esterquest and Chuck Kuhn discuss 50th-anniversary plans with first responders.

Trees and blackbirds in golden light

Wilson Hall At Dusk

Michael McGee is showing off his operator's t-shirt during the Operator's Reunion Party. Marty Murphy and Nick Gurly designed and drew the design on the back of the shirt.

Multiple generations of operators gathered at Kuhn barn for a reunion pig roast on Saturday, July 22. Over 100 current and former operators attended, along with their respective families. The unique nature of the accelerator operators' job — the long hours, rotating shift work, considerable training regimen, working weekends and holidays, and being with the same crew for months or years — creates a camaraderie rare in most other fields. This was evident by the great distances traveled for some who attended. Former ops came from Indiana, Wisconsin, Iowa, Minnesota, Kansas, Virginia, Georgia, Arizona, Utah, New Mexico, Oregon, California and Illinois. Our motto is "Once an Operator, Always an Operator." A great time was had by all.

Blooming flower near ring road

Anne Mary Teichert talking to visitors during the Art Gallery tour of "A Lasting Mark: Angela Gonzales at Fermilab."

Cell phone picture of some wildflowers on the side of C-D Road.

Tree branch on a power line off Giese Road.

Approaching severe thunderstorm from the northwest at Wilson Hall

Bo Jaytilaka is a speaker for the Summer Undergraduate Lecture Series. He speaks on scientific computing at Fermilab.

The morning rains left puddles on the water lilies in the Wilson Hall reflecting pond.

A pair of green herons perch near the Main Ring.

Checking out the morning view atop Acqua Alle Funi.

Watching Anne Heavey and Andrew Dalesandro give the Light and Color school presentation in St. Charles.

The LArIAT collaboration

Summer students Arielle Pfeil and Marlene Ortega, left of the picture, and visitor Katie Chennault of Olivet Nazarene University enjoy a lovely summer day outside in the SiDet courtyard.

Linda Valerio gives a talk at the Summer Lecture Series on the engineering of accelerators and does an excellent job.

Osprey chicks ready to fledge

Muon Campus - M5 beamline elements staged for installation. These magnets were originally part of the Antiproton Source.

A damselfly stands on a rock adjacent to the Wilson Hall parking lot.

Sue Quarto and Maredith Stoffel and growing some wonderful produce to share with our coworkers in a few weeks!

Exploring a passageway in the the main ring tunnel near DZero. The Fermilab scientists and engineers in this group are training to become DZero tour guides.

The upcoming Linac Marx modulator has 54 active cells, each of which needs three lengths of fiber optic cable to transmit the charge, fire and status signals. Cutting the cables is easy; keeping each of the 54 sets organized is the tough part.

This thistle is pretty, even if it is a weed. #Mobile Monday

Pond lilies - Outer Ring Road

The old Bubble Chamber on display in the court yard by Lab B

The New York Times crossword puzzle from last Thursday quotes our motto from this year on 4-down, "What's the DIFF?"

Representing Fermilab at the Windmill City Festival in Batavia.

Stuffing name badges for the upcoming DPF Conference at Fermilab from July 31-Aug. 4.

The wildflowers near the Lederman Education Center.

Stan Johnson takes on a controlled blaze during fire extinguisher training, hosted by the Fermilab Fire Department.

Typical assortment of keys needed in a day in the life of an RF Group technician during shutdown.

Gary Smith prepares brats for a summer cookout at the BEG building.

Facing the camera, Ashton Cattenhead of Facilities Engineering Services Section and Joseph McDermott of the Fermilab Natural Areas weed the sustainable plants in front of the IARC building.

The old modulator at Station 2 of the linac is being dismantled so it can be replaced by a new Marx Modulator.

Dr. Mark Pankuch Northwestern Medicine Chicago Proton Center in Warrenville discusses how to engage students in the ideas of Medical Physics with Teacher Research Associate TRAC Sundaram Thirukkurungundi. Pankuch was the lecturer today in the Undergraduate Summer Lecture Series, speaking on the topic "Cancer treatment with accelerators."

From left: Arielle Pfeil, Cory Cotter and Andrea Bryant, three of this year's Fermilab summer students, stop at my desk for a snack.

Kate Sienkiewicz examines the operation of a 3-D printer while touring the Polsky Center for Entrepreneurship and Innovation at the University of Chicago. Meredith Ament, left, looks on.

That little insect never had a chance.

Storm fronts approach the Lederman Science Education Center, with Broken Symmetry in the background.

Looking up Wilson Hall on a sunny morning.

The same old service building from back in January. The green grass has grown and the air is warm, but the sweeping marks on the wall still remain.

A green heron and a great blue heron wait for breakfast to come by.

Xiao Luo, David Caratelli and Kurt Riesselmann sit in the Remote Operations Center West in Wilson Hall and participate via video conference in Neutrino Day 2017 at Sanford Lab in South Dakota. They are explaining the particle tracks that Fermilab's MicroBooNE detector records using the same liquid-argon technology that scientists will use for the 70,000-ton particle detectors of the Deep Underground Neutrino Experiment at Sanford Lab.

Irma Campos and Jose De La O conduct science demonstrations for children at the Fermilab booth at the Railroad Days Festival in West Chicago.

The continuous electrical ramp in the Main Injector orange falls to zero as the 2017 summer shutdown begins. This will be a period of maintenance and upgrades for the accelerator complex.

A beautiful summer sky is reflected in a DZero building window.

Morning fog

Linac power

I like to park by Kidney Pond because it's so picturesque. Yesterday as I got ready to leave, I came upon this heron, and I interrupted this turtle's picnic, apparently. I tried to get a picture of the two together but the turtle was too fast. Yes, really.

Geese, water, flags and Wilson Hall in July

Egrets and ducks on the water close to Fermilab's east gate

Control Room door at CMTF

Egrets and other waterfowl enjoy the clearing made in the cattails at A.E. Sea.

The inside of ROC East, highlighting the CMS artwork on the south wall by Xavier Cortada and Pete Markowitz. The meaning of this artwork can be found at http://uscms.org/roc/display_files/Xavier-HiggsSearch-Credit.html

Two that didn't make it.

Egrets, herons and cranes gather in a new mowed down, marshy area at Fermilab.

Linac accelerator

This is a composite of various firework photos captured from atop Wilson Hall.

Single shot of Batavia fireworks from 13th floor Wilson Hall

Fireworks go off in the distance, with the Feynman Computing Center in the foreground.

The Teachers Research Associates participants for 2017: Jeffrey Breiten, Amanda Whaley, Subdaram Thirukkurungundi, Petar Kesic, Joanne Bader, and Emmanuel Aldana. This program is coordinated by Harry Cheung.

Not for human consumption!

Having fun learning about perspective with the IARC building.

Two coyote siblings having fun.

Morning in July

Heron in the Main Ring pond

Wildflowers bloom outside of the Transfer Gallery, near Ramsey Auditorium.

Scaffolding stairs down to the future detector.

Among the offerings from the hot-beverage vending machine in the Wilson Hall atrium is CHI tea. I have to believe it's a pun.

Rainbow from IARC in the evening

The projection screen inside the ROC East was removed this morning, making the view a lot nicer.

One of the many reasons working at Fermilab is amazing!

Marco Bonati works in the Lab A cleanroom with bits and pieces for the DESI detector testing.

Not easy to stay dry on this rainy day.

Pat Riehecky explains yum repositories.

Today's Summer Lecture Series speaker, Marc Weinberg, right, engages in a postlecture discussion of the Higgs boson with three summer interns at Fermilab. The interns are Marlene Ortega, Katie Chennault and Bernadette Haig.

Meet Callie Surber! Callie has been at Fermilab since May 2017 and works with the Particle Physics Administrative Support Group in the Particle Physics Division office.

Erica Snider, Gianluca Petrillo, Hans Wenzel, Jason Stock

CMS pixels prototype FCP 130 ASIC has initial testing performed by Lou DalMonte of the Particle Physics Division Electrical Engineering Department in FCP 130 test lab, Wilson Hall, 14th floor.

This heron is a little camera shy.

John E. Anderson III helped conduct a test on a 12-inch bellows installed in the Tevatron to see if the bellows can be reused elsewhere.

Wilson Hall

It's like Bob Ross painted the sky above Wilson Hall - so many happy little clouds!

Marc Paterno of the Computing Division still working hard at the end of a long day.

The clematis is the BEG south courtyard is in full and glorious bloom.

Maral Alyari of the Particle Physics Division Compact Muon Solenoid Department and Petar Kesic with the Summer TRAC Teacher program discuss the “Big Pink Foam” located in the Lab C cleanroom, which is being used for testing the HGCal cassette tubings for CMS phase 2 upgrade. #MobileMonday

Cherry picking of data: Bad. Cherry picking of, well, cherries: Delicious! Elliott McCrory and the photographer have had a bumper crop of cherries at the Fermilab garden this year.

Bird goes airborne from the back of one of the Fermilab bison.

Fermilab attracts many visitors, especially when the weather is beautiful.

Jose Sepulveda contemplates the age of this rock.

Anne Mary Teichert talks about Angela Gonzales'"Lasting Mark" at Fermilab.

In this picture Bert Gonzalez is performing an inspection of the first 2S thermal mockup he assembled and mounted into a cooling frame for the CMS upgrade.

Inside view of the colorful Lab A dome.

John Anderson reminds the folks in the Accelerator Division about our common-sense safety procedures in preparation for the coming shutdown period.

Taking a walk on Road B at lunchtime.

Bert Gonzalez from the Particle Physics Division Detector Development and Operation Department and R&D Assembly Department works in the Lab D cleanroom at SiDet. He is assembling a precision silicon plane. This is work for others.

It looks like those thick dark clouds will touch the Bubble Chamber.

Erica Snider standing, workshop attendees

A cloudy, Midwestern sky over the bison field.

Marlene Ortega is a Summer student working for Daniel Bowring. She is working at SiDet in Lab B doing some testing on different materials.

A dickcissel sitting on a branch waiting for his true love to show up.

Feeding swallows

The art work of Angela Gonzales

The 2017 Fermilab Fishing Derby!

Clouds over Wilson Hall

Looking down from the 15th floor on Saturday, June 17, 2017, all that is left from the celebration is the DOTS.

A redwing blackbird eats seeds from roadside grasses.

Lori Haseltine from the Workforce Development and Resources Section, Education Office, assists Anatoly Ronzhin in purchasing some Fermilab T-shirts for family members.

Chalk dust from old equations buffs a Fermilab chalkboard like a pale rouge.

Debbie takes a short break.

Ice cream in the atrium for the 50th anniversary employee celebration.

Zoltan waits patiently for the Fermilab photo to be taken.

Jamie Santucci helps operate the dunk tank event while a dunker gets ready to pitch.

Nice throw!

Talent abounds during the afterparty.

When the party is over but you're not ready to go home yet...

People smile and wave their hands as they are photographed by Reidar Hahn, who is at the top of the high-rise. Excitement all around.

As the excitement builds, people get ready for Reidar to take the Fermilab's 50th birthday group picture.

People in the horseshoe waiting for the 50th anniversary group picture.

People in the horseshoe wait for the 50th anniversary group picture.

Anne Heavey winds up for the dunk!

The unfolding of a dunking at the 50th anniversary employee celebration.

Terry Hart contemplates perhaps how he might complete a perfect game.

A large fraction of Fermilab's employees gather in front of Wilson Hall for a group shot. The group that organized this photograph was Harry Ferguson, Lauren Biron, Kimberly Pearce, Kathrine Cipriano, Robert J. O'Sullivan, Kelly Dombrowski, Luz Jaquez, Marilyn Franck and Rosette A Mace.

Delicious ice cream toppings were served on the ever popular round table in the cafeteria.

Visitor-scientist Teppei Katori enjoys his bowl of ice cream.

Taking selfies while waiting for group picture!

Employees line up to get their T-shirts for the 50th anniversary photo.

A beautiful sunset caps an enjoyable day celebrating Fermilab's 50th anniversary.

Stephany Unruh dares the next person in line to dunk her.

Happy 50th birthday Fermilab!!

From left: Stacey Lindeman and Mari Mendez chill out during the June 15 afterparty.

Spentz gets dunked, and Heath is up next!

The Black, Red, White and Blue anniversary soccer tournament teams are friendly rivals.

The Black Team emerged victorious from the anniversary tournament. Look at those cool t-shirts!

It's Nur Nuruzzaman versus Sergey Los and Vladimir Shiltsev (background).