 | Thursday, April 29, 2004 |
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Thursday, April 29 2:30 p.m. Theoretical Physics Seminar - Curia II Speaker: G. Weiglein, University of Durham Title: Higgs and SUSY and Present and Future Colliders 3:30 p.m. DIRECTOR'S COFFEE BREAK - 2nd Flr X-Over 4:00 p.m. Accelerator Physics and Technology Seminar - 1 West Speaker: E. Gianfelice-Wendt, DESY Title: The Lepton Beam Polarisation in the Frame of the Hera Luminosity Upgrade
Friday, April 30 |
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Wilson Hall Cafe Thursday, April 29 Sante Fe Black Bean soup Marinara Meatball Sub $4.75 Butter Crumb Baked Fish $4.75 Pork Chop Teriyaki $3.75 Bake Ham & Swiss on a Ciabatta Roll $4.75 Sausage & Sweet Onions Strombolis $2.75 Crispy Fried Chicken Ranch Salad $4.75 Wilson Hall Cafe Menu Chez Leon |
 Chance T-Storms 79º/55º
Extended Forecast |
Secon Level 3 |
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In Memoriam: Ronald Walker
Walker started his physics career at Fermilab in 1972 working on the 30-inch bubble chamber physics experiment. Accelerator Division Head Roger Dixon, who was a graduate student at Purdue University at the time, spent his first days at Fermilab working for Walker on the camera system for the 30-inch bubble chamber. "I was just getting used to the whole field then, and ever since, I felt a very special connection to Ron," Dixon said. "He made a big impression on me. It was quite an exciting time at the lab, and Ron was one of the people who showed me there was something to be excited about." Walker went on to work on the 15-foot bubble chamber and then moved to the Accelerator Division's Cryogenic Department, where he became the Deputy Cryogenic Department Head in 1990. Jay Theilacker, Cryogenic Department Head, describes Walker as a staple in the Cryogenic Department. Walker was instrumental in the design, installation and commissioning of the Central Helium Liquefier used to cool the Tevatron. Twenty years after its commissioning, Fermilab's CHL remains the world's largest helium liquefier. In 1984, Walker received an Industrial Research Award for his development of a helium gas analyzer. "Ron was the one physicist in our department who always brought a different perspective to the table and came up with unique solutions," Theilacker said. "This was a huge benefit that is going to be difficult to replace."
Visitation will be on Friday, April 30 from 4:00 p.m. to 9:00 p.m. at the
Beidelman-Kunsch Funeral Home, 516 S. Washington in Naperville (630) 355-0264.
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April 26 - April 28 - Although Operations established one store during this time period, it wasn't useful beam. The existing store provided approximately 28 hours and 50 minutes of luminosity to the experiments. - Core emittance problems plague the TeV, Pbar, and the Recycler - Experts conducted many studies in the TeV, Main Injector, and Booster - TeV sector A1 cold compressor failed early Wednesday morning
View the current accelerator update |
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From the Detroit Free Press, April 28, 2004: Beyond tiny, neutrinos loom as a big mystery By Robert Boyd WASHINGTON -- You can't see them. You can't feel them. But every second, trillions of them flit harmlessly through your body. They are neutrinos, tiny ghostlike specks of matter that played -- and still play -- an essential role in the evolution and life of the universe.
"If there were no neutrinos, the sun and the stars wouldn't shine,"
said Boris Kayser, a researcher at the Fermi National Accelerator
Laboratory in Batavia, Ill. "There would be no Earth, no moon, no us.
Without them, we wouldn't be here."
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DZero B- and B0 Decays Get the Chance of a Lifetime | ||
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A B-meson consists of a bottom quark and an anti-quark of another type.
The lightest members of the B-family are B- (b-ubar) and B0 (b-dbar) and
they disintegrate (or decay) in about a trillionth of a second.
Naively the B- and B0 mesons are expected to have the same lifetime but a
small difference has been measured previously. This is due to slightly
different interactions between heavy and light quarks in charged and neutral
B mesons.
Recent theoretical developments allow us to predict the ratio of these lifetimes with more precision than previously possible. Therefore it
Our preliminary result (R = 1.093 +- 0.021 (stat) +- 0.022 (sys)) agrees with previous results, and the precision of our measurement is as good as the previous single best measurement (from the Belle experiment at KEK and BaBar experiment at SLAC). We are collecting more data with which to further improve the precision of this important measurement. | ||
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Result of the Week Archive |
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New Book Purchase Suggestion Lists New Book purchase suggestion lists for the week of April 27 are now available online. These include Majors book lists in four subject areas. There is also an Amazon suggestion list in the form of a shopping cart, viewable by entering the password "library."
Fermilab Picnic and Cougar Game |
