 | Thursday, February 19, 2004 |
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Thursday, February 19 Noon Wellness Works – Brown Bag Seminar - 1 West Speaker: M. Kinzler (Registered Nutritionist) Title: Healthy Heart Eating 2:30 p.m. Theoretical Physics Seminar - Curia II Speaker: G. Zanderighi, Fermilab Title: Automated Resummation of Final State Observables in QCD 3:30 p.m. DIRECTOR'S COFFEE BREAK - 2nd Flr X-Over THERE WILL BE NO ACCELERATOR PHYSICS AND TECHNOLOGY SEMINAR TODAY
Friday, February 20 |
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Thursday, February 19 Corn and green chili bisque Shepherd's pie $3.50 Lean roast beef piled high w/pepperjack and a tangy horseradish mayo $4.75 Smoked ham and peas tossed w/penne pasta in a parmesean cream $3.50 1/2 pound burger topped w/melted pepperjack, salsa and a green chili mayo served w/soup or fries $4.75 Eurest Dining Center Weekly Menu Chez Leon |
 Mostly Cloudy 44º/37º
Extended Forecast |
Secon Level 3 |
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RF Structures Pass the Test | ||
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The results are in. One of the latest Fermilab RF structures sent to SLAC,
the site of the Next Linear Collider Test Accelerator (NLCTA) facility,
has passed the test. The structure, cryptically titled FXB006
(for Fermilab X-band structure: series B, number 6) transfers energy
from a power source to a beam of electrons. The design specifications
for these RF structures for the Next Linear Collider are an unloaded
accelerating gradient of 65 MV/m and less than 0.1 breakdowns/hr.
The structures are being produced at Fermilab in collaboration with KEK and SLAC. "FXB006 is the first structure ever produced that has simultaneously met the 65 MV per meter and less than 0.1 breakdowns per hour requirements," said Shekhar Mishra of the Technical Division. "The breakdown rate of this structure after more than 200 hours of processing is 0.05 per hour." Its brother, FXB007, follows closely behind with a breakdown rate of 0.16 per hour. A newer version of the RF structure, designated FXC, contains slotted disks and is currently undergoing testing at the NLCTA. | ||
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Two Mute Swans Make a Stop at Fermilab | ||
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On Tuesday a group of ornithology and biology students from NIU
DeKalb was treated to a surprise upon their visit to Fermilab:
two mute swans putting on a mating display in the Main Injector ponds.
According to Fermilab's Peter Kasper, who keeps an online journal
of Fermilab bird sightings, the copulating swans were first spotted
at that location on Sunday. As of Wednesday, they were gone. The
birds were probably just passing through, "looking for a good place
to set up home," Kasper said. Mute swans are spotted at Fermilab
only a few times a year. Kasper noted that his tour group was
"very lucky."
Recent Bird Sightings at Fermilab | ||
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B Stars on Ice | ||||
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The study of sub-atomic particles containing a bottom quark helps us
understand how all fundamental particles interact. The heavy
b-quark paired with an anti down-quark can form a number of
different particles -- including four combinations dubbed the B** mesons. These four
separate states occur because the two quarks are in different
The DZero experiment has observed the production of these B** states by measuring the stable particles produced when they decay. All four B** states contribute to the bump shown as a green line in the figure above. Amazingly B mesons can oscillate between matter and antimatter states. The study of B** mesons and their properties, although interesting
The study of these heavy excited B-mesons can only occur at the
Tevatron, as experiments at Stanford and KEK (in Japan) do not operate
at sufficiently high enough energies to produce such particles. The
prospects are bright for these studies of heavy quarks to give us clues
as to the composition of the universe.
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February 16 - February 18 - During this time period Operations established one store. That store, along with one that already existed, provided approximately 41 hours and 13 minutes of luminosity to the experiments. - A 480V breaker in the East Booster Gallery tripped off. - Experts from the Tevatron, Main Injector, Recycler, Antiproton Source, Booster, Linac, and Switchyard conducted machines studies.
View the current accelerator update |
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Brown Bag Seminar Today Wellness Works presents a Brown Bag Seminar on Thursday, February 19, from noon to 1:00 p.m. in One West entitled Nutrition for a Healthy Heart. The presenter is Michele Kinzler, Registered Nutritionist with Central Dupage Hospital.
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