Monday, March 19, 2012

Have a safe day!

Monday, March 19
2:30 p.m.
Particle Astrophysics Seminar - One West
Speaker: Mark Trodden, University of Pennsylvania
Title: Galileons and Their Generalizations
3:30 p.m.
4 p.m.
All Experimenters' Meeting - Curia II
Special Topic: MICE Coupling Coils Testing at Fermilab; Residual Radiation Cooldown: Main Injector; T-1008: SuperB Muon Detector Prototype at FTBF

Tuesday, March 20
3:30 p.m.
4 p.m.
Accelerator Physics and Technology Seminar -
One West
Speaker: Alexander Romanenko, Fermilab
Title: Superconducting RF Cavities: Extending Knowledge Boundaries

Click here for NALCAL,
a weekly calendar with links to additional information.

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Secon Level 3

Wilson Hall Cafe

Monday, March 19

- Breakfast: Croissant sandwich
- French quarter gumbo soup
- French dip w/ horseradish cream sauce
- Santa Fe pork stew
- Smart cuisine: Country baked chicken
- Popcorn shrimp wrap
- Assorted sliced pizza
- Sweet 'n sour chicken w/ egg roll
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 - March 21

From 12:30 to 1:30 p.m. on Wednesday, March 21, 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

The cosmic-ray riddle

The trajectories of cosmic rays are bent by intergalactic magnetic fields.

Data from the world's most powerful particle colliders should shed light on a 100-year-old astrophysics mystery, but even they cannot explain the perplexing properties of the universe's most energetic particles. Are ultra-high-energy cosmic rays heavier than expected? Or did scientists inadvertently discover a new type of physics?

One hundred years ago, an audacious scientist named Victor Hess ascended 5000 meters in a hot air balloon, armed with an iron-clad resolve to find the source of the mysterious atmospheric ionization scientists had observed around the world.

What he discovered would earn him the 1936 Nobel Prize in physics and change the course of cosmic research. He found that this atmospheric ionization increased with altitude, proving it was not the result of the natural decay of radioactive elements on Earth, as many scientists had theorized, but produced by particles from space.

Scientists call these extraterrestrial particles cosmic rays: tiny, vagrant atomic nuclei that careen around the universe until they crash into the surface of a celestial body.

Read more

—Sarah Charley

Photo of the Day

New employees - March 12

From left: Jerry Grant, ES&H; Hyunwoo Kim, SCD; Julie Wiley, BSS; Sarah Lockwitz, PPD; Geralyn Ignarski, WDRS, and Ben Carls. PPD. Credit: Cindy Arnold
In the News

Not so fast: Second experiment refutes faster-than-light particles

From the Washington Post,
March 16, 2012

Anyone who bet against Einstein better get out their wallet.

That's because those supposedly faster-than-light particles that shook up the world of physics last September are now looking a lot slower.

A second experiment deep in an Italian mountain timed these subatomic particles, called neutrinos, traveling at precisely the speed of light and no faster, a team from the experiment, called ICARUS, announced Friday.

"For us, the timing is perfectly in line with the speed of light," said Carlo Rubbia, a Nobel prize-winning physicist and spokesman for the ICARUS experiment, in a telephone interview.

Read more

In the News

Synopsis: Pinpointing Planck's constant with GPS

From Physics, March 15, 2012

GPS is helping drivers find their way and parents track their kids and pets. But now a pair of researchers—reporting in Physical Review Letters—has used the same technology to put new limits on variations in Planck's constant.

Certain theories allow physical constants, such as the speed of light or the gravitational constant, to vary, and some astronomical observations have been interpreted as suggesting the electromagnetic coupling was different in the past. Testing these hypotheses often requires sophisticated instruments. But James Kentosh and Makan Mohageg of California State University, Northridge, have found a way to use the ubiquitous global positioning system, or GPS, to evaluate the constancy of Planck's constant, h.

GPS relies on atomic clocks, which are sensitive to Planck's constant through their ticking frequency, f=E/h, where E is the energy of a specific atomic transition. For a clock orbiting in one of the 32 GPS satellites, this frequency can shift with respect to ground-based clocks because of well-known relativistic effects. The GPS system keeps track of this frequency drift and broadcasts a clock correction with its signal.

Read more

ES&H Tip of the Week:

Warm weather increases need to track butterfly populations

Conservationalists from the Peggy Notebaert Nature Museum transfer caterpillars onto turtlehead plants at Fermilab.

Spring doesn't officially begin until Tuesday, but we've been enjoying spring-like weather for weeks. Could there be any possible downside to this? Maybe.

Human beings are not particularly sensitive to subtle changes in our environments because we are highly buffered from their effects. If the temperature changes, we can just turn the heat or air conditioning up or down and go about our business. But some species of animals are very susceptible to small changes in their surroundings.

A recent Science360 article reports that this early spring is hurting the Mormon Fritillary butterfly in the Rocky Mountains. Warmer weather has led to earlier than normal snowmelt in the mountains, which decreases the number of nectar sources for the butterflies, resulting in females laying fewer eggs. If the snow cover disappears early again, the overwintering larvae will be exposed to potentially deadly frosts.

These cascades of cause and effect are central to understanding the science of ecology. The complex interactions between climate, weather, butterfly and flower populations have evolved over time to rely on precise timing of events, and when that timing is disturbed, unexpected consequences can multiply.

In the insect world, butterflies are very sensitive to environmental factors, and although we don't have Mormon Fritillaries locally, we do have many species of butterflies. At Fermialb, about 54 species have been observed. Becoming familiar with them and learning to pay attention to them can make us more aware of the subtle design in the environment around us. You can also use your butterfly identifying skills to help naturalists track the health and migration species populations.

If you are interested in learning about local butterflies and helping track their health, consider attending the butterfly monitoring workshops led by Fermilab's Tom Peterson. The free workshops are sponsored by Fermilab Natural Areas and the Illinois Butterfly Monitoring Network. The beginner's class is from 10 a.m. to noon on Saturday, May 5, and the intermediate class is from 10 a.m. to noon on Saturday, June 2.

Rod Walton, Fermilab ecologist

Special Announcement

Service Desk website change

The Service Desk website will appear a bit differently to users today. In addition to the current interface, the website now has additional ways to view information. Visit the Service Desk website to view the Tour Guide, which appears in red print in the newsbox.

Accelerator Update

March 14-16

- FTBF experiment T-1008 ended its run
- The Muon Accelerator Program (MAP) received permission to take beam in the MTA line
- Muon Ring personnel conducted studies
- SeaQuest continued to commission its beamline

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


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