Tuesday, August 7, 2012

Have a safe day!

Tuesday, Aug. 7
3:30 p.m.


Wednesday, Aug. 8
3:30 p.m.

4 p.m.
Fermilab Colloquium (NOTE LOCATION) - Auditorium
Speaker: Andreas Kronfeld, Fermilab
Title: Twenty-first Century Lattice Gauge Theory: Consequences of the QCD Lagrangian

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Wilson Hall Cafe

Tuesday, Aug. 7

- Breakfast: bagel sandwich
- Tomato bisque soup
- Lemon pepper club
- Veal parmesan
- Smart cuisine: Korean garlic chicken
- Grilled chicken Caesar salad wrap
- Assorted calzones
- Rio Grande taco salad

Wilson Hall Cafe Menu

Chez Leon

Wednesday, Aug. 8
- Barbecue ribs
- Potatoes fontecchio
- Cucumber salad
- Espresso coupe

Friday, Aug. 10
- Balsamic salad
- Porcini crusted fillet w/ tarragon butter
- Parmesan whipped potatoes
- Steamed broccoli
- Peach crepes w/ cajeta sauce

Chez Leon Menu
Call x3524 to make your reservation.


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From symmetry

Voyage into the unknown

In the deep, dark quantum sea known as the Intensity Frontier, particle physicists expect to find everything from exotic new particles to new insights into the evolution of our universe.

At their darkest depths, the Earth's oceans have given rise to life forms foreign enough to have come from other worlds. Scientists have discovered life that exists without light, bacteria that feast on foul-smelling chemicals fatal to humans, and colonies of giant clams and tubeworms that thrive in vents hotter than 400 degrees. The forms of life that scientists have observed in these alien ocean realms are stranger than anything in our imaginations.

The depths of the quantum seas harbor their own surprising creatures. Probing the secrets of the subatomic world, physicists have found stealth neutrinos that traverse the Earth without leaving a trace, colorful quarks that form a zoo of short-lived denizens and massive bosons that break fundamental concepts of nature such as left-right symmetry. And they know there is more to discover. The known particles account for less than one twentieth of the entire mass and energy of the universe.

In a research effort known as the Intensity Frontier, scientists are embarking on a voyage into the deepest, darkest recesses of the subatomic realm. What will they see when they shine their most intense particle beams ever at the dark, unknown and unexplored quantum universe? Will their large, massive particle detectors make discoveries that prove even more strange and startling than those made in the past?

"No one has been there before," says SLAC National Accelerator Laboratory's JoAnne Hewett, who co-leads US efforts to map out research opportunities at the Intensity Frontier. "There are certain to be some things we expect to see. But some things will be completely unexpected and could change our view of how the universe works."

By probing the subatomic depths with intense particle beams and super-massive detectors, scientists hope to find undercurrents of strange new particles and behaviors in the uncharted waters called "new physics."

"We know that there is new physics out there, and we know that there are particles and interactions that are not part of the Standard Model," says Argonne National Laboratory's Harry Weerts, who together with Hewett co-chaired an Intensity Frontier workshop last fall. "Only a few percent of the universe is made of matter like us. We think we should be able to explain why, but so far we haven't been able to. With very intense particle beams and large detectors, we will be able to look for the very rarest of processes."

Read more

Mike Perricone

Photo of the Day

High-pitched hawk

A hawk perches on the valve of one of the tanks in the helium tank farm near the Main Ring. Photo: Bob Niels, TD
In the News

Taking some guesswork out of high-energy physics

From SLAC News Center, Aug. 6, 2012

SLAC theorist Stan Brodsky and his collaborator Xing-Gang Wu of Chongqing University have just made the lives of high-energy particle theorists the world over a bit easier. They've demonstrated a way to literally take some of the guesswork out of predictions from quantum chromodynamics (QCD). QCD is the theory explaining the behavior of quarks, which in groups of three form protons and neutrons, and gluons, which carry the strong force that "glues" the quarks together.

In the realm of QCD, interactions are the thing. It's not enough to know which quarks make up a particle; just as important is their dynamics: how those quarks bounce off each other and what messages the gluons carry between them as they jostle about. Eavesdropping on quarks is not easy.

To make matters worse, "virtual" particles from the effects of quantum field theory keep popping in and out of existence, changing the discussion. It's as if you're trying to talk to a friend in the midst of a crowd of chatty strangers; snippets of their chatter keep floating over to you and your friend, some from close by – some from farther away – redirecting your train of thought.

Fortunately, thanks to the property of "asymptotic freedom," the closer together the particles, the quieter the conversation. All that extra chatter has a real effect in QCD, and up until now, theorists could only guess as to how many of the interlopers were in an interaction, how loud they were, and how they changed the conversation.

Read more

Lori Ann White

Director's Corner

Shutdown progress

Fermilab Director
Pier Oddone

In May of this year we began a major shutdown of our accelerators that will last almost a full year. During this shutdown we will upgrade the Main Injector ring, the NuMI beam line and target, the Recycler ring, the Booster and the Linac. This will bring the accelerator complex to its "NOvA-era configuration," delivering 700 kilowatts of beam power to NOvA. With additional improvements to the Proton Source, the complex will be capable of running other experiments off the Booster ring and providing test beams to the Meson Lab at the same time as NOvA operation The work is ahead of schedule, and in this week's column I want to thank the many employees from across the laboratory who have come together to make such great progress over the past three months.

The word shutdown is misleading – rather than a time of slow activity it is probably the busiest time ever for many staff members. Approximately 75 people are working in the Main Injector and NuMI tunnels, including electricians, pipe fitters, riggers and technicians. Staff from across the laboratory have built such strong teams that it's difficult to tell which division they work for. They are frequently working in tight spaces, which can be challenging, and many are learning new skill sets as they accomplish their goals. The work is ahead of schedule. So far we have:

  • Removed more than 180 tons of material from the tunnels, including old magnets, beam pipe, vacuum components, radioactive materials and decommissioned beam lines.
  • Installed 60 miles of cable in the Main Injector tunnel and have only 20 more miles to go.
  • Completed decommissioning of the antiproton components in the Main Injector tunnel.
  • Decommissioned the 800 feet of electron cooling components in the Main Injector tunnel. This is where the highest levels of radiation in the Main Injector tunnels are located, so it was imperative that the staff worked carefully and diligently to minimize exposure. We used more than 20 tons of shielding to reduce the radiation to a safe level for the workers.
  • Completed 75 percent of beamline upgrades to NuMI.
  • Completed several upgrades to the proton source, including recabling of the modulators, new filament control units for the low-energy Linac and repairs to the beam dump.
  • Repaired the Booster magnet half-way to completion, converted half the Booster RF stations to solid state and completed the cabling for the remaining stations.

We are a long way from completing all the tasks necessary for the upgrades, but the progress so far has been stupendous and I want to thank all the folks who are keeping us on track.

Construction Update

Temporary work deck platforms at LArTF

Whittaker Construction Company has built temporary work deck platforms inside the Liquid Argon Test Facility cylinder. Photo: Cindy Arnold

Whittaker Construction Company, contracted to construct the Liquid Argon Test Facility, has built four temporary work platforms inside the LArTF cylinder, which extends into the ground. Pictured here are the ground-level platform, 42 feet above the cylinder floor, and a second platform that is 24 feet above the ground-level platform. Two more platforms, not pictured, are below the ground-level platform.

The LArTF is designed with a large removable roof that that covers an approximately 44-foot-by-23-foot access slot through which the MicroBooNE cryostat will be installed. The removable roof will be supported by two concrete beams spanning the cylinder. The contractor has elected to form and cast these two beams using the top platform as the base of the formwork. The beams will be cast this month. Later all the platforms and scaffolding seen in the picture will be removed.


Today's New Announcements

International Folk Dancing in Ramsey Auditorium - through August

Scottish country dancing in Ramsey Auditorium - through Aug. 31

Road D closed - Aug. 6-9

Heartland Blood Drive - Aug. 13-14

Drawing to win palm tree - Aug. 15

University of Chicago Tuition Remission Program deadline - Aug. 17

Howard Levy & Chris Siebold - Aug. 18

URA Visiting Scholars Program deadline - Aug. 27

Project Management Introduction class - Sept. 10-14

Fermilab Management Practices Seminar - begins Oct. 4

Interpersonal communication skills training - Nov. 14

Martial Arts classes

Outdoor soccer - Tuesdays and Thursdays at 6 p.m.

Fermilab employee discounts

Atrium work updates

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