Wednesday, March 21, 2012

Have a safe day!

Wednesday, March 21
12:30 p.m.
Physics for Everyone - Ramsey Auditorium
Speaker: Doug Glenzinski, Fermilab
Title: A Rare Opportunity, the Mu2e Experiment
3:30 p.m.
4 p.m.
Fermilab Colloquium -
One West
Speaker: Joshua Klein, University of Pennsylvania
Title: From Anomaly to Problem to Physics: Lessons from Solar Neutrinos

Thursday, March 22
LHC Physics Center Topic of the Week Seminar - WH11 Sunrise
Speaker: Ricardo Vasquez Sierra, University of California, Davis
Title: 4th Generation Quark Searches in CMS
2:30 p.m.
Theoretical Physics Seminar - Curia II
Speaker: Heechang Na, Argonne National Laboratory
Title: Precise Calculations on Heavy Flavor Physics from Lattice QCD
3:30 p.m.
4 p.m.
Accelerator Physics and Technology Seminar - One West
Speaker: Charles Thangaraj, Fermilab
Title: Experimental Studies on Coherent Synchrotron Radiation at the A0-Photoinjector

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Wilson Hall Cafe

Wednesday, March 21

- Breakfast: English muffin sandwich
- Smart cuisine: Beef barley soup
- Gyros
- Fish florentine
- Baked linguine and cheese
- Beef and cheddar panini
- Assorted sliced pizza
- Grilled chicken bowtie w/ tomato cream

Wilson Hall Cafe Menu

Chez Leon

Wednesday, March 21
- Parmesan crusted chicken w/ sage butter sauce
- Roasted potatoes w/ garlic & rosemary
- Steamed green beans
- Strawberry cream torte

Friday, March 23
- Mussels w/ white wine & thyme
- Veal saltimbocca
- Spinach fettuccini w/ cherry tomatoes
- Shortcakes w/ strawberries & gran marnier

Chez Leon Menu
Call x3524 to make your reservation.


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Special Announcement

Physics for Everyone - today

Doug Glenzinski

From 12:30 to 1:30 p.m. today, Fermilab physicist Doug Glenzinski will give a talk titled, "Discovery science with muons: Fermilab's Mu2e experiment," as a part of the Physics for Everyone lecture series. The talk, which will take place in Ramsey Auditorium, will include time for questions and answers.

From symmetry breaking

More physics for your funding

Parts of the CDF detector, now retired, will aid experiments in laboratories around the world.

The decommissioning of the Tevatron represented the end of an era, but it also is ushering in the next generation of physics by providing valuable equipment to other experiments.

"We don't have enough funding to buy things new, so when we want to improve our experiments, we must search for and reuse equipment," said Bogdan Wojtsekhowski, a staff scientist at Jefferson Lab. "Scientists share equipment all the time. It's the best way to get more physics for your budget."

Fermilab's CDF experiment is donating photomultiplier tubes, computers, electronics racks and other equipment to experiments located all over the world, said Jonathan Lewis of Fermilab's Particle Physics Division, who is organizing the decommissioning of the detector.

"These computers are going to a lab in Korea," Lewis said during a tour of the building. "And we're sending those electronics racks to Italy."

Jefferson Lab received more than 600 of the Tevatron experiment's photomultiplier tubes for an experiment measuring the charge distribution inside protons. New, these photomultiplier tubes would have cost $700,000, but because they came from Fermilab, J-Lab had to pay only roughly $1,000 for disassembly and shipping costs.

"We could not have afforded these photomultiplier tubes new, so we are very appreciative that we could get them from Fermilab," Wojtsekhowski said.

Read more

—Sarah Charley

In the News

Detection of cosmic effect may bring universe's formation into sharper focus

From, March 20, 2012

The first observation of a cosmic effect theorized 40 years ago could provide astronomers with a more precise tool for understanding the forces behind the universe's formation and growth, including the enigmatic phenomena of dark energy and dark matter.

A large research team from two major astronomy surveys reports in a paper submitted to the journal Physical Review Letters that scientists detected the movement of distant galaxy clusters via the kinematic Sunyaev-Zel'dovich (kSZ) effect, which has never before been seen. The paper was recently posted on the arXiv preprint database, and was initiated at Princeton University by lead author Nick Hand as part of his senior thesis. Fifty-eight collaborators from the Atacama Cosmology Telescope (ACT) and the Baryon Oscillation Spectroscopic Survey (BOSS) projects are listed as co-authors.

Read more

In the News

Why big data is now such a big deal

From The Guardian, March 18, 2012

Computers are spewing forth data at astronomical rates about everything from astrophysics to internet shopping. And it could be hugely valuable

One of the most famous quotes in the history of the computing industry is the assertion that "640KB ought to be enough for anybody", allegedly made by Bill Gates at a computer trade show in 1981 just after the launch of the IBM PC. The context was that the Intel 8088 processor that powered the original PC could only handle 640 kilobytes of Random Access Memory (RAM) and people were questioning whether that limit wasn't a mite restrictive.

Gates has always denied making the statement and I believe him; he's much too smart to make a mistake like that. He would have known that just as you can never be too rich or too thin, you can also never have too much RAM.

Read more

From the Accelerator Physics Center

Exploring the nonlinear world of accelerators

Sergei Nagaitsev

Sergei Nagaitsev, associate head of the Accelerator Division, wrote this week's column.

"Physics would be dull and life most unfulfilling if all physical phenomena around us were linear. Fortunately, we are living in a nonlinear world. While linearization beautifies physics, nonlinearity provides excitement in physics." - Y. R. Shen, The Principles of Nonlinear Optics

Accelerator scientists at Fermilab plan to build a 30-meter-circumference accelerator to investigate an area of research known as nonlinear accelerator optics, founded nearly 50 years ago by the director of the Lawrence Berkeley National Laboratory, Edwin McMillan. This propsoed accelerator, an electron storage ring, will be built in the new accelerator test area in the NML building and will receive beam from the Advanced Superconducting Test Accelerator, under construction in the same building.

To guide particles around a ring, almost all accelerators in operation today rely on linear accelerator optics: they use magnets with two and four magnetic poles that surround the beam to steer and focus the particles. If the particles stray from the centerline, these dipole and quadrupole magnets force them back.

In the 1960s, scientists realized that adding nonlinear focusing magnets, which have at least six magnetic poles, could be beneficial for operating accelerators. But they found that adding nonlinear focusing to an accelerator could inevitably result in a loss of particles as nonlinear focusing magnets, if applied improperly, make particles behave chaotically.

Recent advances in solving the equations governing nonlinear accelerator optics have made the use of nonlinear focusing magnets a promising area of research. Several weeks ago, Fermilab held a one-day review on its novel, proposed test electron storage ring. We will use this ring, called the Integrable Optics Test Accelerator, to test ideas on how to construct an accelerator with strong nonlinear focusing while avoiding resonances and chaotic particle motion.

The IOTA ring review, chaired by Prof. Andrei Seryi of University of Oxford, highlighted the possible applicability of nonlinear systems to future colliders and high-intensity machines. The committee found that the IOTA project fits well with both Fermilab's mid-term vision aimed at the Intensity Frontier and advanced accelerator R&D as well as with our long-term vision.

The experimental program at IOTA will not be limited to the studies of nonlinear systems. The ring will also become a significant element of the Fermilab Advanced Accelerator R&D program by providing the foundation for carrying out exciting experiments and educating the new generation of accelerator physicists to support Fermilab's leadership in the field of accelerators.

Editor's note: Viatcheslav Danilov, Oak Ridge National Laboratory, and Sergei Nagaitsev published a paper on nonlinear accelerator optics in 2010. It was named one of the top six outstanding Accelerators and Beams papers by Physical Review editors that year.

Safety Update

ES&H weekly report, March 20

This week's safety report, compiled by the Fermilab ES&H section, contains two incidents. One employee received first-aid treatment after cutting his finger while cleaning a pipe. Another employee reported that he had a tick on his cheek after working outdoors.

Find the full report here.

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