Tuesday, July 23, 2013

Have a safe day!

Tuesday, July 23

Undergraduate Lecture Series (NOTE LOCATION) - CDF Big Room
Speaker: Amitoj Singh, Fermilab
Title: Computing at Fermilab

2:30 p.m.
Theoretical Physics Seminar (NOTE LOCATION) - WH3NE
Speaker: Kyoungchul Kong, University of Kansas
Title: Next-to-Minimal Universal Extra Dimensions

3:30 p.m.

4 p.m.
Accelerator Physics and Technology Seminar - One West
Speaker: Eric Colby, DOE Office of Science Office of High Energy Physics
Title: DOE HEP's Accelerator R&D Stewardship Program

Wednesday, July 24

3:30 p.m.

4 p.m.
Fermilab Colloquium - One West
Speaker: John Huth, Harvard University
Title: The Lost Art of Finding Our Way

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Ongoing and upcoming conferences at Fermilab


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Wilson Hall Cafe

Tuesday, July 23

- Breakfast: All-American breakfast
- Breakfast: bacon, egg and cheese bagel
- Ranch chicken breast sandwich
- Smart cuisine: pork piccata with lemon sauce
- Chicken curry
- California turkey panini
- Taco salad
- Minnesota chicken and rice soup
- Chef's choice soup

Wilson Hall Cafe menu

Chez Leon

Wednesday, July 24
- Bacon cheese stuffed shells
- Field greens with herb vinaigrette
- Fresh fruit plate

Friday, July 26
- Cold spicy cucumber avocado soup
- Peruvian-style beef kabobs with grilled onions and zucchini
- Quinoa and grilled-pepper salad
- Lime tart with blueberry sauce

Chez Leon menu
Call x3524 to make your reservation.


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From symmetry

Explain it in 60 seconds: Force carriers

Particles communicate with one another through force carriers. Image: Sandbox Studio

Force carriers are particles that act like messages exchanged between other particles.

Scientists have discovered force carriers for three of the four known forces: electromagnetism, the strong force and the weak force. They are still searching for experimental evidence of the force carrier for the fourth force, gravity.

Particles communicate with one another in different languages, as defined by the kind of force carriers they exchange. Two particles can communicate with one another only if they are exchanging force carriers that convey a language they both understand. For example, a charged particle like an electron responds to force carriers for the electromagnetic force, but a neutral particle like a neutrino does not.

Sometimes two particles must be very close together to communicate via force carriers. They can "whisper" a message that would be too soft to extend over a long distance. Electrons and neutrinos can exchange W bosons, which are force carriers for the weak force, only when they are close to one another.

A force carrier can convey different messages. Protons and electrons, which have opposite charges, are attracted to one another through the electromagnetic force. The particles that carry that force, called photons, act like love notes. They draw the protons and electrons together.

When two electrons, which both have a negative charge, communicate through electromagnetism, the photons act more like hate mail. They push the electrons apart.

Kelly Izlar

Read similar explanations in the symmetry archive.

Photos of the Day

Cool evening at Main Injector

Evening sunlight diffuses through jets of water spraying over the Main Injector pond. Photos: Charles King, AD
In Brief

Students: undergraduate lecture in CDF Big Room today

Today's Undergraduate Lecture takes place in the CDF Big Room, which is in the CDF detector building on Batavia Road. Students who plan to attend today's lecture can see how to get there using this Google map or this pdf, which shows the route from Wilson Hall to CDF.

A Fermilab taxi will be available to take a limited number of students at two different times to CDF from Wilson Hall. The first pickup will be 11:30 a.m., the second at 11:45. Pickup is at the northeast ground-floor entrance to Wilson Hall.

In the News

Physicists unveil results that support standard model

From the Daily Herald, July 19, 2013

GENEVA—After a quarter-century of searching, scientists have nailed down how one particularly rare subatomic particle decays into something else—a discovery that adds certainty to our thinking about how the universe began and keeps running.

The world's top particle physics lab said Friday it had measured the decay time of a particle known as a Bs (B sub s) meson into two other fundamental particles called muons, which are much heavier than but similar to electrons. It was observed as part of the reams of data coming from CERN's $10 billion Large Hadron Collider, the world's largest atom smasher, on the Swiss-French border near Geneva.

Read more

In the News

Who said U.S. particle physics is dead?

From Scientific American, July 18, 2013

Physicists find God particle! That has become a common headline since the Large Hadron Collider (LHC) near Geneva began turning out data. Researchers have been more cautious and have completely disavowed the ridiculous name used for the Higgs boson, but we agree that the LHC indeed turned up a new particle last summer.

Another common conclusion from the LHC work is that the U.S., the world leader in physics for the past century, has passed the torch to Europe and that U.S. particle physics is doomed to decay. But there is no strong evidence to support this conclusion. The U.S. is still a leader in particle physics, and physicists are determined to keep it that way.

Read more

Director's Corner

Department of Energy restructuring

Jack Anderson

Last week Energy Secretary Ernest Moniz announced a restructuring of DOE's leadership. The plan makes significant changes that will affect Fermilab, so in today's column I will take you through some of the highlights. If you'd like to hear about the changes directly from Secretary Moniz, I encourage you to watch the video of his town hall meeting for DOE employees.

The first major change that will affect our lab is the merging of the two existing undersecretary positions for science and energy. The new undersecretary for science and energy will oversee the Office of Science—our home within DOE—as well as the five energy offices. Most of DOE's national labs will fall under this new undersecretary. The merged structure will allow science and energy research to be better coordinated within DOE.

While many of the lab's interactions are with the Office of Science, we also work closely with DOE personnel in operations roles. That side of the house is also undergoing a change with the creation of a new undersecretary for management and performance, who will oversee the department's principal support organizations. This office will host a new National Laboratory Operations Board, where leaders from the laboratory system and from DOE will work together to tackle administrative issues that touch all 17 labs. This new board will give the laboratories a recurring and direct line of communication with senior DOE leadership, and I'm hopeful that over time it will improve coordination within complex environment in which we work.

Laboratory directors and senior DOE officials will also join forces in a new National Laboratory Policy Council. This council, to be initially chaired by Argonne Director Eric Isaacs, will help define the lab's role in the department's overall strategy for research and technology development.

It will be some time before the laboratories feel the full impact of these changes. Many positions—including the Office of Science director, vital for Fermilab—remain to be filled or confirmed. But the creation of the National Laboratory Operations Board and the National Laboratory Policy Council will undoubtedly introduce a new, exciting dialogue between the Department of Energy and its laboratories about priorities, our collective performance, challenges and opportunities for improvement.

Construction Update

Basement walls for MC-1 Building Experimental Hall

Workers have finished pouring the MC-1 Building Experimental Hall concrete floor slab and have started constructing the concrete walls. Photo: Cindy Arnold

With the MC-1 Building Experimental Hall basement floor complete, workers from Whittaker Construction & Excavating Inc. are now pouring the 2-foot-thick concrete basement walls. Ultimately the walls will rise a total of 29 feet from the basement slab, which is 18 feet above ground, to provide radiation shielding to personnel outside the building when the Muon g-2 experiment is operating. The walls will be completed in 16 separate pours, with a pour planned every other day until complete.

The tallest part of the building in this latest rendering of the MC-1 Building is the Experimental Hall, currently under construction. Adjacent to the experimental hall is a two-story service area and a one-story refrigeration room to house cryogenic equipment for the Muon g-2 and future Mu2e experiments. Image: Andrew Federowicz, FESS

Yoga begins today

UEC/FSPA presentation for Fermilab, Argonne postdocs, students - July 24

Benefits Office closed until July 26

NALWO tour to Garfield Farm - July 31

What's Your Financial IQ Challenge runs from July 1 - 31

July EAP webinar

C2ST presents The Physics of Baseball - Aug. 2

Fermilab Heartland Blood Drive - Aug. 12 and 13

UChicago Tuition Remission program deadline - Aug. 22

URA Visiting Scholars program deadline - Aug. 26

Puppet Fundamentals course offered in September

Poster contest for the CMS experiment

Same-sex couples now eligible for immigration benefits

Outdoor soccer at the Village

English country dancing at Kuhn Barn

Scottish country dancing meets Tuesday evenings in Auditorium

International folk dancing in Auditorium for summer

Fermilab discount at Don's Auto Ade Inc.

Bristol Renaissance Faire discount