Tuesday, Sept. 18, 2012

Have a safe day!

Tuesday, Sept. 18

3:30 p.m.


Wednesday, Sept. 19

3:30 p.m.

4 p.m.
Fermilab Colloquium - One West
Speaker: David Nygren, Lawrence Berkeley National Laboratory
Title: The Origins and Evolution of the Time Projection Chamber (TPC) Idea

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Wilson Hall Cafe

Tuesday, Sept. 18

- Breakfast: All-American breakfast
- Tomato basil bisque
- Classic reuben sandwich
- Barbecue pork ribs
- Smart cuisine: Caribbean chicken skewers
- Grilled-chicken Caesar wrap
- Personal pizza
- Black and bleu salad

Wilson Hall Cafe Menu

Chez Leon

Wednesday, Sept. 19
- Chicken and artichoke calzone
- Salad
- Chocolate fondue

Friday, Sept. 21
- Salad with cranberries, walnuts and blue cheese
- Pan-roasted beef tenderloin with stroganoff sauce
- Barley risotto
- Sautéed baby zucchini
- Cocoa cappuccino mousse

Chez Leon Menu
Call x3524 to make your reservation.


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From symmetry

First proton-lead collision test at the LHC successful

For the first time, scientists at the Large Hadron Collider have collided protons with lead ions, a feat that will give them insight into the quark-gluon plasma. Image: CERN

For most of the year, two beams of protons run the collision course around the Large Hadron Collider. Scientists take a short break from protons in winter to collide much heavier lead ions.

In a test on Thursday, scientists collided the two types of particles together for the first time. The feat will allow physicists to better understand the conditions of the universe just after the big bang.

LHC scientists collide lead ions to create quark-gluon plasma, a hot, dense soup of quarks that are free-floating instead of being bound into particles. They study the plasma's properties by examining the high-energy particles that emerge from collisions that produce it.

Early next year scientists will smash protons with lead ions to better understand results obtained from the lead-lead collisions. Proton-lead collisions are similar to lead-lead collisions, but they have lower energy and therefore do not produce quark-gluon plasma. Colliding protons with lead ions will help scientists determine which effects of the collisions come from the presence of lead ions and which ones come from the presence of the plasma.

"We are all very excited that it worked so quickly," accelerator physicist John Jowett said. "This is something very new for the LHC."

Colliding protons with lead ions was a new challenge for the CERN teams. The two LHC beam pipes are usually filled with beams composed of identical types of particles, which are accelerated to an identical energy before colliding. Colliding lead ions with protons is unusual because lead ions have very different mass and charge than protons. Both are subject to the forces of the same magnets that surround the LHC beam pipes, so their energies and frequencies of revolution around the ring are unequal. To correct the differences, the radiofrequency cavities the beams pass through are tuned to different frequencies for each of the beams.

Read more

Signe Brewster

Photo of the Day

Interpretive trail at dusk

The Margaret Pearson Memorial Trail glows on Friday evening. Photo: Steve Krave, TD

Broadway's Next H!T Musical comes to Fermilab

Patrons who attend Broadway's Next H!T Musical are eligible for the Fermilab Arts Series bring-a-friend discount.

This Saturday the Fermilab Arts Series brings Broadway's Next H!T Musical to Ramsey Auditorium.

A fully improvised musical comedy, Broadway's Next H!T Musical is different every time it's performed. Much along the lines of the song portions of "Whose Line Is It Anyway?" performers make up every lyric, melody and jazz hand on the spot.

The show's first act is an award ceremony spotlighting songs from four Best Musical nominees based on audience-created song titles. In the second act, the nominated musical is reenacted in its entirety based on the winning song from Act One.

The Fermilab Arts Series is now offering bring-a-friend offers to patrons. If you bring a new friend to Broadway's Next H!T Musical, he or she will get half off of an adult-price ticket, and you will receive a voucher for half off of adult-price tickets for future 2012-2013 Arts Series events, with the exclusion of the Natalie MacMaster concert on Nov. 3. As the offer cannot be made online, please stop by the box office or call the box office at 630-840-ARTS.

Broadway's Next H!T Musical shows on Saturday, Sept. 22, at 8 p.m. in Ramsey Auditorium. Tickets are $25 for adults and $13 for attendees 18 and under.

Learn more.

In the News

New Fermilab camera helping look into ancient universe

From CBS Chicago, Sept. 17, 2012

CHICAGO (CBS) – A powerful new camera built in the Chicago area by Fermilab is turning out pictures that look billions of years into the universe's past.

The Dark Energy Camera is designed to help scientists try to figure out why the universe is speeding up as it's expanding.

Read more

In the News

Uncertainty not so certain after all

From Science News, Sept. 14, 2012

Physicists may need to tweak what they think they know about Werner Heisenberg's famous uncertainty principle.

Measuring light particles doesn't push them as far into the realm of quantum fuzziness as once thought, new research suggests. The work doesn't invalidate the principle underlying all of modern quantum theory, but may have implications for supersecure cryptography and other quantum applications.

"The real Heisenberg uncertainty principle is alive and well," says Lee Rozema, a graduate student at the University of Toronto whose team reports the finding in the Sept. 7 Physical Review Letters. "It's really just this [one aspect] that needs to be updated."

Read more

Director's Corner

Update on tritium management at Fermilab

Fermilab Director
Pier Oddone

Next year, with the restart of our accelerator complex, Fermilab is poised to enter a new era of experiments with high-intensity particle beams. To prepare for this new era, we are upgrading and improving the accelerator complex and building new particle detectors. But with higher-intensity beams will also come an increase in the production of tritium, and we are preparing for that as well.

Tritium, a weakly radioactive isotope of hydrogen, is a normal byproduct of accelerator operations here at Fermilab. Very small but detectable levels of tritium are found in some of the ponds on our site, in Indian Creek, which flows to a pond in the Savannah community off site, and in sanitary sewer water that is pumped to a wastewater treatment facility in Batavia. These levels are well below regulatory standards that Fermilab is required to meet.

But we are not satisfied with merely meeting those standards. We are dedicated to keeping the amounts of tritium produced and discharged from the site as low as possible. Since 2005, when low levels of tritium were first detected in Indian Creek, we have put in place many measures to minimize the amounts of tritium in ponds and creeks. The lab's Tritium Working Group is now focused on reducing the levels of tritium present in sanitary sewer water.

We are also renewing our commitment to keeping employees and the public fully informed about tritium on the Fermilab site. In 2005, we launched a website that provides information about tritium in surface water, and we have regularly updated it with results from water samples taken from the three creeks on site. Recent water samples taken from Indian Creek show levels of 4 picocuries per milliliter (pCi/mL), well below the regulatory standard of 1,900 pCi/mL for surface water.

The website now also includes the results of water samples taken from the sanitary sewer water that is pumped to Batavia's wastewater treatment facility. The highest level of tritium found to date in this sanitary sewer water is about 8 pCi/mL, far below the regulatory standard of 9,500 pCi/mL that Fermilab is required to meet. Information is also available online about the emission of water containing low levels of tritium into the air and the disposal of tritium as solid waste.

Though the levels of tritium discharged by Fermilab pose no health risk to our employees, visitors or neighbors, we take the matter very seriously. In addition to our continuing efforts to minimize the amounts of tritium produced and discharged from our site, we will keep our employees, the Community Advisory Board and the public informed as new readings and new steps are taken.

If you have questions about tritium at Fermilab, please contact the Fermilab Office of Communication at 630-840-3351 or send an email to fermilab@fnal.gov.

From ES&H

Flu vaccination information available online

Sign-up up for this season's flu shot is now available online. The Fermilab Medical Office will administer flu shots on Oct. 2, Oct. 4 and Oct. 11.

Read more about the Medical Office's flu vaccination administration in the Sept. 10 issue of Fermilab Today.

Construction Update

Cryogenic storage tanks relocated to NML and CMTF

One of the yellow-shaded cryogenic storage tanks was relocated from the Tevatron to the Cryomodule Test Facility. Photo: Jerry Leibfritz, AD

Two large cryogenic storage tanks were recently relocated to the Cryomodule Test Facility in preparation for the new cryogenic plant that is being built to support the superconducting radio-frequency test facilities at NML and CMTF. A 30,000-gallon helium storage tank that resided inside the Tevatron berm near CDF (each painted a slightly different shade of bright yellow or orange) was relocated to the helium tank farm between NML and CMTF. Additionally, a 20,000-gallon liquid-nitrogen tank from the Central Helium Liquefier building was relocated next to the compressor building of CMTF. These tanks were made available after the recent shutdown of the Tevatron. After a good cleaning and a fresh coat of paint, they will be put back in service at CMTF.

This 20,000-gallon liquid-nitrogen tank was moved to the Cryomodule Test Facility. Photo: Jerry Leibfritz, AD

Fermilab Arts & Lecture Series: Broadway's Next H!T Musical - Sept. 22

NALWO and Playgroup SciTech Museum visit - Oct. 6

Fermilab Friends for Science Education and grants from Chase Community Giving

Change in Users' Office hours

International Folk Dancing returns to Kuhn Village Barn

Scottish country dancing returns to Kuhn Village Barn

Weekly Qigong, balance and lower-body strength class

Martial Arts classes

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

Professional development courses

Atrium work updates

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