Tuesday, May 3, 2011

Have a safe day!

Tuesday, May 3
3:30 p.m.

Wednesday, May 4
12:30 p.m.
Physics for Everyone - Auditorium
Speaker: Chris Polly, Fermilab
Title: The Magic of Muons
3:30 p.m.
4 p.m.
Fermilab Colloquium - One West
Speaker: Stewart Prager, Princeton Plasma Physics Laboratory
Title: The Path to Magnetic Fusion Energy

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Secon Level 3

Wilson Hall Cafe

Tuesday, May 3

- Breakfast: Bagel sandwich
- Chicken & rice soup
- Italian sausage w/ peppers & onions
- *Beef stroganoff
- *Chicken tetrazzini
- Peppered beef
- Assorted sliced pizza
- Chicken tostadas

Wilson Hall Cafe Menu

Chez Leon

Wednesday, May 4

Guest chef: Veronica Almeraz
- Chile relleno, chorizo quesadilla & steak tostada
- Southwest corn & bean salad
- Mango flan

Friday, May 6

Chez Leon Menu
Call x3524 to make your reservation.


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Special Announcement

Plant a tree today in honor of Arbor Day

Members of the Fermilab community planted trees in honor of Earth Day 2010.

You can plant a tree or shrub today as part of the laboratory’s annual Arbor Day celebration.

Planting takes place at 11:30 a.m. today near B and Batavia roads. Bring a shovel and appropriate footwear.

Hot dog lunch will be provided for participants. Call x3303 for more information.

From Quantum Diaries

Mu2e: A little background (the nasty kind)

The figure shows the muon-electron conversion energy distribution in light green and the energy distribution for electrons from one of the backgrounds in red. The signal energy is spread out due to the limited resolution of the Mu2e detector (not all of the signal events are measured to have the exact energy produced in the decay). The source of the background shown in red is from muons that decay in orbit (DIO) into an electron and neutrinos. This decay is allowed in the Standard Model. Because of the extra neutrinos produced in the final state, the electron carries less energy than the signal events where the muon decays only to electrons since no neutrinos are involved to take away some of the energy.

In experimental particle physics, the term “background” refers to events that can be easily confused for signal. In my last post , I introduced the Mu2e experiment and pointed out that this experiment needs a huge amount of muons (1 million trillion, 1018, or more) and hopes to be sensitive to even one muon decaying directly into an electron. To achieve such a single-event sensitivity the sources of backgrounds must be minimized and/or understood extremely well.

So, what is so difficult about that? Mu2e must have a striking experimental signature that is extremely hard to fake, right? Not exactly! The signal for the Mu2e experiment is just a single electron! Hmmm… That sounds like it could be a problem because every ordinary atom making up the experiment, the building housing the experiment and planet Earth that it sits on is made up of electrons!

Read more

Craig Group
Special Announcement

Physics for Everyone talk on muons - 12:30 p.m. May 4

Join Fermilab at 12:30 p.m. on Wednesday, May 4, to learn about muons, including what they are, how we study them and what they might tell us. In his talk, titled “The magic of muons” scientist Chris Polly will explain what Fermilab experiments are teaching us about these particles and how they’re getting that information.

The lecture is free and open to the public. It will take place in Ramsey Auditorium. No registration is required. There will be time for questions and answers. The lecture is part of a non-technical series about Fermilab science and culture. View previous lectures here.

Special Announcement

Bicycle seminar - noon today

Members of the Fermilab community are invited to attend a Brown Bag Seminar on bicycle commuting, hosted by the Fermilab Traffic Safety Subcommittee.

Officer Emil Jensen, Batavia Police Department, and Eric Mieland, Fermilab ES&H, will present the seminar, titled "Bicycle Safety, Road Sharing and Greenhouse Gas Reduction," which will take place from noon to 12:45 p.m. on Tuesday, May 3, in Wilson Hall Curia II.

Photo of the Day

New employess - April 25

Bernetta Woodard, BSS; Jorge Cortez, BSS.
In the News

Lagattolla: Applause, enthusiasm for Skilling in Batavia

From Kane County Chronicle,
May 1, 2011

BATAVIA – As Tom Skilling walked onto the stage of the Ramsey Auditorium at Fermilab on Saturday night, he was greeted by the steady applause of a crowd that included many who adore WGN-TV's chief meteorologist.

He smiled, shook his head and shrugged his shoulders. "I'm just a weatherman," he said. But of course, it goes deeper than that. He's the Harry Caray of weather guys, the kind of guy who makes you show up, just because.

Read more

Director's Corner

APS “April Meeting”

Fermilab Director Pier Oddone

The traditional April meeting of the American Physical Society is taking place in Anaheim, CA. It began on April 30 and will conclude on May 3. Several APS divisions participate in this meeting: Particles and Fields, Nuclear Physics, Astrophysics, Physics of Beams, Plasma Physics and Computational Physics. This is the principal annual meeting for our discipline. I gave a talk on the “Tevatron and Beyond” and participated in a panel discussion on policy together with several prominent members of the community, the former DOE Associate Director for High Energy Physics Dennis Kovar and the Associate Director of Science at the White House Office of Science and Technology Policy Carl Wieman.

It is a special time for particle physics, with a number of hints that perhaps presage some great new discoveries, but not one of them is yet anything we would call a definitive result. The Tevatron is concluding its career with new records in luminosity and a series of new measurements that show deviations from the physics we would predict from our current knowledge. If some of these hints are confirmed with the data we will collect through the end of this fiscal year, the Tevatron will have yielded more spectacular results in its fantastic career. Lyn Evans, in his talk at the APS on colliders, praised the luminosity achieved by the Tevatron saying that he would have never believed that it would be possible to achieve such luminosity with antiprotons, particles that have to be made, captured, stored, cooled and collided in a very complex process.

The LHC proton-proton collision program has now surpassed the instantaneous luminosity of the Tevatron by a factor of two. The LHC is making rapid and impressive progress. For the time being they have re-discovered the Standard Model and set new limits in a variety of processes, beyond those established by the Tevatron. The blogosphere has lit up with rumors of new physics several times without confirmation. The events are coming fast and furious and the possibility of new discoveries is in the air. It should also be an exciting couple of years at the LHC.

There are also hints of new physics in the neutrino sector, where the differences in neutrino and antineutrino oscillation parameters, if finally made definitive, would again open unexpected domains. At the cosmic frontier, the annual modulation of putative dark matter particles as the Earth moves around the sun, first claimed by the DAMA collaboration, is now joined by hints of such modulation from the CoGeNT detector in Soudan for signals corresponding low-mass dark matter particles close to the detector threshold. Dark matter experiments like Xenon and CDMS would exclude the observations made by CoGeNT and DAMA, provided that their sensitivity is correctly modeled, something that has led to heated discussions in the field.

All of these “almost discoveries” should be resolved in the near future, making for very exciting times ahead.

Accelerator Update

April 22-25

- Four stores provided ~64 hours of luminosity
- Store 8701 set a new record with a initial luminosity of 416.61E30
- Booster RF system trips caused some minor down time
- Pbar debuncher kicker repairs interrupted stacking for three hours
- Beam instability at the beginning of store 8702 caused a loss of luminosity

*The integrated luminosity for the period from 4/25/11 to 5/2/11 was 71.36 inverse picobarns. NuMI took 4.06E18 of beam during this same time period.

Read the Current Accelerator Update
Read the Early Bird Report
View the Tevatron Luminosity Charts


Latest Announcements

Fermilab Arbor Day is today, come plant a tree!

Limited phone service Wednesday for the Fermilab Service Desk

Pre-kindergarten swim lessons at pool

Change in cashier's office hours

Motorcycle Safety Seminar - May 5

Aqua Tots at the pool

PeopleSoft and Employee Self Service unavailable May 5-8

SRF2011 in Chicago - July 25-29

Pool opens June 7

New Weight Watchers At Work session starting soon

Medical scans that use radioisotopes require work adjustments

Do you have a foreign bank account outside of the U.S.?

National Day of Prayer observance May 5

Argentine Tango classes Wednesdays through May 4

Ultimate frisbee starting soon

Jazzercise discount for employees

NALWO - Spring Tea - May 9

How to Advance Women in Science - May 12

Fermilab Arts & Lecture Series - Nagata Shachu Taiko Drumming - May 7

Windows 7 Introduction course - May 19

Word 2010: Transition from 2003/2007 course - May 25

Excel 2010: Transition from 2003/2007 course - May 25

Chilled Water Plant design course - June 14 – 16

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