 | Thursday, July 1, 2004 |
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Thursday, July 1 3:30 p.m. DIRECTOR'S COFFEE BREAK - 2nd Flr X-Over THERE WILL BE NO ACCELERATOR PHYSICS AND TECHNOLOGY SEMINAR TODAY
Friday, July 2 |
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Thursday, July 1 Minnesota Wild Rice w/Chicken Tuna Melt on Nine Grain $4.75 Breaded Veal w/Mushroom Cream Sauce $2.75 Sweet & Sour Pork over Rice $3.75 BLT Ranch Wrap $4.75 Cheesy Breadsticks $1.85 Toasted Pecan Chicken Salad $4.75 Wilson Hall Cafe Menu Chez Leon |
 Partly Cloudy 85º/61º
Extended Forecast |
Secon Level 3 |
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Hill Succeeds Ellis as Theory Head | ||||
Today, after more than a decade as head of Fermilab's Theoretical Physics Department, Keith
Ellis will step down. Chris Hill, a theoretical physicist and 25-year Fermilab employee, will
"Filling Keith Ellis' shoes will be a challenge," said Hill. "He has done a superb job of managing the Theory Group over the past 11 years." While head of the department, Ellis animated the Run II Physics Workshops and led the creation of the prestigious Frontier Fellows program that brings senior theorists to Fermilab for extended visits. "I'm proud of our lively program for visiting theorists and the enormous success we've had with our postdocs, who have gone on to good positions in the field," said Ellis. "I now look forward to dedicating
Hill brings a wide range of theoretical interests and a strong background in outreach and education to the leadership of the department. "It's wonderful to get someone like Chris, who has such enthusiasm," said Ellis.
"I am very optimistic about the future of elementary particle physics and Fermilab's role as its leader,"
said Hill. "The Theoretical Physics Group at Fermilab is a recognized leader in sub-Planck scale physics
in the U.S. We compete with key institutions in the field for the best postdocs and associate scientists.
My job will be to maintain an environment for such excellence to flourish."
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Annual Fermilab-Argonne Ultimate Frisbee Tournament | ||
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Last Thursday, June 24, the Fermilab Ultimate Frisbee Club met the Argonne National Laboratory team
for their annual tournament. The competition was fierce at the Surrey Ridge Athletic Complex in Lisle, IL.
Fermilab controlled the first game, but couldn't withstand a last-minute push from Argonne--the ANL
team won 16-14. The second game was also evenly matched, but Argonne again edged out the Fermilab team for an 11-9 win.
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June 28 - June 30 - There were no stores established during this 48 hour period. An existing store provided approximately 24 hours and 2 minutes of luminosity to the experiments. - The TeV suffers a quench just after all protons and antiprotons (from Recycler and Pbar) were loaded. - TeV sextupole magnet (T:SF) ground faults.
View the current accelerator update |
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From the New Scientist, June 30, 2004 Speed of Light May Have Changed Recently by Eugenie Samuel Reich The speed of light, one of the most sacrosanct of the universal physical constants, may have been lower as recently as two billion years ago - and not in some far corner of the universe, but right here on Earth. The controversial finding is turning up the heat on an already simmering debate, especially since it is based on re-analysis of old data that has long been used to argue for exactly the opposite: the constancy of the speed of light and other constants.
A varying speed of light contradicts Einstein's theory of relativity, and would undermine much of
traditional physics. But some physicists believe it would elegantly explain puzzling cosmological
phenomena such as the nearly uniform temperature of the universe. It might also support string
theories that predict extra spatial dimensions. |
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Inclusive Jet Studies How small is a quark? | ||
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In 460 B.C. the Greek philosopher Democrito introduced the concept of "atom" to explain the nature of matter.
Nowadays, we know atoms are made of electrons, protons and neutrons. Protons and neutrons are themselves
examples of hadrons: combinations of quarks and gluons as predicted by Quantum Chromodynamics (QCD). Are
At the Tevatron, protons and antiprotons collide at very high energy. In those collisions, collimated jets of hadrons are produced along the direction of struck quarks and gluons in the final state. The study of the jet energy spectrum allows physicists to search for signals of quark compositeness down to a distance of 10-19 m. | ||
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| At CDF the jet energy spectrum has been measured and compared to QCD predictions over almost nine orders of magnitude using two different techniques to reconstruct the jets in the final state. Measurements are at the moment consistent with point-like quarks. Theoretical predictions are, however, dominated by our limited knowledge of both the proton structure and the fragmentation of quarks and gluons into jets of hadrons. For the latter, precise measurements of the jet internal structure have been performed and compared to phenomenological models. | ||
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Result of the Week Archive
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Weekly Time Sheets Due Tomorrow Due to the upcoming July 4th holiday, weekly time sheets are due in Payroll by 10:00 a.m. on Friday, July 2.
Dave Herzog's Marionette Show
Housing Request Deadline Today
Fermilab Singers Concert |
