 | Tuesday, January 25, 2005 |
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Tuesday, January 25 3:30 p.m. DIRECTOR'S COFFEE BREAK - 2nd Flr X-Over THERE WILL BE NO ACCELERATOR PHYSICS AND TECHNOLOGY SEMINAR TODAY
Wednesday, January 26 |
 Breezy 39º/25º
Extended Forecast |
Secon Level 3 |
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Tuesday, January 25 Chicken and Rice Soup Mushroom Swiss Burger $4.75 Baked Meatloaf with a Roasted Tomato Demi-Glace $3.75 Parmesan Baked Fish $3.75 Southwestern Turkey Wrap $4.75 Ham & Pastrami Calzones $3.25 South of the Border Burritos with Chips & Queso $4.75
Wilson Hall Cafe Menu |
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Tevatron turned in a record run following the shutdown | ||
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The Tevatron hit some bumps in the road over the weekend, but the
ride has been a good one since the shutdown ended. On Monday,
Jan. 17, the Tevatron set another initial luminosity record
at 1.05x1032 cm-2s-1 in store #3925,
then came close with 1.04E32. A record rate of antiproton production
contributed to the luminosity record, and the integrated luminosity for
the week of Jan. 17 was the third best ever for the Tevatron.
"These small steps demonstrate our progress. They are not due to major breakthroughs," said Accelerator Division head Roger Dixon. "But they show that we're on the correct slope for continuing to improve the luminosity of the Collider." An improved stacking rate in the Accumulator contributed to the luminosity boost following the shutdown, since antiprotons are a key to luminosity. With the Recycler now playing an important role in storing antiprotons, the Accumulator's average stacking rate improves as antiprotons are periodically transferred to the Recyler. The Accumulator now can spend more time stacking with a small stack where the rates are higher. "Another factor is the Tevatron reliability that results in stores lasting longer," Dixon said. "This gives us more time to stack antiprotons for the next store." The post-shutdown surge wasn't crisis-free: major power outage originating with Commonwealth Edison on January 3 shut down operations for three days. "The whole Division performed remarkably well," Dixon said. "You can't just flip a switch and turn the Tevatron back on after a power outage. Many things happen when the power goes off, not the least of which is warmup of the Tevatron cyrogenic magnates. Cooling the cryogenic systems back down takes time. Nevertheless we managed a very rapid startup that beat our intitial estimates by several days.In another incident last week a vacuum circuit breaker in the Main Injector failed spectacularly. This event had to potential to cause a much longer downtime than we actually experienced due in large part to the Operating and technical support staff in both the Accelerator Division and in FESS responding quickly and effectively.
The next two challenges for the Division are continuing to increase the
stacking rate in the Accumulator and commissioning the electron cooling
system in the Recycler. Dixon said the goal for electron cooling is to
circulate an electron beam in the Pelletron in February, and then to
introduce the electron beam into the Recycler in March.
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From Chicago Sun-Times, January 24, 2005 Major players put Chicago on map for grid computing by Howard Wolinsky A new trade association backed by major computer industry companies is being formed here to promote grid computing. Grid computing is a technology that enables users with diverse programs and operating systems to share computer processing, storage, data and software across networks. The trade association's aim is to move grid computing out of the ivy tower and into corporate towers.
Hewlett-Packard, IBM, Intel and Sun Microsystems today will announce they are sponsoring the Globus Consortium to create open standards for grid computing, a technology developed by Argonne National Laboratory here and the University of Southern California. The Globus Toolkit, which includes software for sharing resources and security, was built to help scientists and corporations that want to develop their own secure grids. The system was honored in 2003 with a Chicago Innovation Award, presented by the Chicago Sun-Times and Kuczmarski & Associates.
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Good Morning!
Many more neutrino events were collected by the end of the weekend, fulfilling the final milestones for the 6-year long NuMI project. Greg Bock and the many people who worked on the NuMI project can be very proud of what they have accomplished. It was as difficult and important a project as anything done in the scientific world over the last few years.
Fermilab is the primary center for neutrino physics with accelerators, with the MiniBooNE experiment operating in the Booster neutrino beam and the MINOS experiment in the long-baseline NuMI beam. From the earliest days of the laboratory, Fermilab neutrino experiments have been in the forefront of the field. We look forward to great results from MiniBooNE and MINOS in the years to come.
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January 21 - January 24 - During this 72 hour period operations established one store that provided the experiments with approximately 4 hours and 36 minutes of luminosity - Quenches, leaks, and wet engine problems plagued the Tevatron all weekend - NuMI reported seeing their first neutrinos at the MINOS near detector on Friday
Read the Current Accelerator Update |
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Unix Users Meeting The next Unix Users' Meeting will be on Wednesday, January 26 from 1:00 p.m. to 3:00 p.m. in Curia II. Agenda: Marc Mengel - Ups change to TWW Joe Klemencic - Xhosting your security Connie & Troy - Linux updates
Neutrino Video Installation
Symmetry Online Subscription
January PC Manager Meeting
The next PC Manager Meeting will be on
Wednesday, January 26, from 9 to10 a.m. in WH8X (Hornets Nest).
Free Introductory Tai Chi Class
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