Thursday, July 22|
Noon Summer Lecture Series - 1 West
Speaker: V. White, Fermilab
Title: Grid Computing and Physics
2:30 p.m. Theoretical Physics Seminar - Curia II
Speaker: D. Wackeroth, State University of New York, Buffalo
Title: NLO QCD Predictions for Hadronic Higgs Production with Heavy Quarks
3:30 p.m. DIRECTOR'S COFFEE BREAK - 2nd Flr X-Over
THERE WILL BE NO ACCELERATOR PHYSICS AND TECHNOLOGY
Friday, July 23
3:30 p.m. Wine & Cheese - 2nd Flr X-Over
THERE WILL BE NO JOINT EXPERIMENTAL THEORETICAL PHYSICS
SEMINAR THIS WEEK
Thursday, July 22|
Santa Fe Black Bean soup
Marinara Meatball Sub $4.75
Butter Crumb Baked Fish $4.75
Sauteed Liver & Onions $3.75
Baked Ham & Swiss on a Ciabatta Roll $4.75
Sausage & Sweet Onion Strombolis $2.75
Crispy Fried Chicken Ranch Salad $4.75
Wilson Hall Cafe Menu
CDF Brings the Bubbly Stuff to Main Control Room|
CDF delivered a case of champagne to the Main Control Room
on Tuesday after losing a bet about the recent luminosity record. (Click
on image for larger version.)|
A large group of employees from the Accelerator Division and CDF
met in the Main Control Room on Tuesday to celebrate last week's luminosity
record with champagne. Larry Nodulman of CDF brought the bubbly, making
good on a bet he lost to Dave McGinnis, Associate Head of the Accelerator
Division, about the recent luminosity record.
"Dave advertised at the Users' Meeting in June that the Tevatron might hit 1x1032cm-2sec-1
before the upcoming shutdown in late August," Nodulman said. "I promised to
deliver a case of champagne if that happened."
Head of the Accelerator Division Roger Dixon acknowledged the efforts of
McGinnis, Sergei Nagaitsev, Head of the Recycler Department, and the many other
employees who helped achieve the luminosity record. "The Accelerator Division
is full of incredible people," Dixon said. "When we started up after the last
shut down, it was difficult to imagine reaching this luminosity. But after Dave
told me his scheme for mixed pbar shots, I believed it could happen."
When asked how he felt about winning the bet, McGinnis took a sip of his drink
and replied, "This is very good champagne."
Computing Division's Gene Oleynik Captures
Photos of Fermilab Wildlife|
Meadow Lark at Fermilab (Courtesy of Gene Oleynik) (Click on image for larger version.)|
To amateur wildlife photographer Gene Oleynik, Fermilab is more than just a
physics laboratory. With approximately 1,100 acres of restored prairie, it's
also a treasure trove of extraordinary photo opportunities.
"I bring my camera to work with me every day," said Oleynik, who recently
returned to the Computing Division after working 6 years in telecommunications.
"Last month I had to be on site early every morning to copy data tapes from
KTeV onto the mass storage system. Because I was here so early, I was able to
take pictures of night herons, which are nocturnal, and also got some great
photos of prairie birds like meadow larks, northern flickers, and redwing
blackbirds in their natural environment." Oleynik also photographs mammals
such as coyotes and deer, but is particularly enamored with raptors. Last
winter he drove to Mississippi 6 times to photograph bald eagles that migrate
there every year.
"Whether I'm taking pictures of eagles fishing on the Mississippi river
or of meadow larks foraging for food, photography brings me closer to my
surrounding world and helps me to stop and smell the roses," he said. His
photos can be viewed online.
Whitetail Deer at Fermilab (Courtesy of Gene Oleynik) (Click on image for larger version.)|
From Stanford Report, July 21, 2004|
SLAC experiment triples its data production for study of matter and antimatter
by Kate Metropolis
If the laws of physics were precisely the same for matter and antimatter, you wouldn't be reading this. All matter, as we know it, would have been converted into light after the Big Bang. To explore the fundamental differences between matter and antimatter, physicists need a vast amount of data. In early July, the PEP-II accelerator at the Stanford Linear Accelerator Center, one of the world's chief suppliers of these data, reached a new milestone: It is delivering three times as many particle collisions per second as the machine was designed to produce.
DZero Tracks Luminosity Spot|
The width of the beam for 6 stores before the
beam optics change (in red), and 6 stores after the change (black).
After the change, the better focusing of the beam at DZero produces
a smaller beam spot in the center of the detector. (Click on image for larger version.)|
For the past year and a half, DZero has been using its tracker
to measure the profile of the colliding beams at the
DZero interaction region.
Thanks to the tracker's excellent performance, the transverse width of
the beam at the DZero intersection point -- typically no wider than a human
hair, about 30 microns wide -- can be measured to an accuracy of a few microns.
CDF also performs similar measurements at its interaction point.
These new measurements complement the tools already in place to monitor
DZero's measurements confirmed independent indications from the
Accelerator Division that the collision point at DZero was
more spread out along the beam line than expected.
The successful beam optics installed last May, which reduced the
beam spot size and resulted in an impressive 20% increase in the
luminosity, were confirmed by reduced beam spots as measured by DZero.
Luminosity is a measure of the number of collisions produced at the Tevatron.
There are still issues to be understood (the vertical beam width may experience
further reduction and a significant discrepancy exists between the DZero and
CDF luminosities). However, these beam spot measurements provide one more
method in the highly successful effort to increase collisions. The increased
number of collisions will help the Tevatron experiments search for the faint
signals of many interesting phenomena, such as supersymmetry and the Higgs
The beam-size analysis shows the important contributions
to our everyday operation by the international collaborators of DZero who work
from their home institutions. The periodic measurements of the beam shape are
performed by Avdhesh Chandra, a student from TIFR in India. Juan Estrada
(not in the picture), from Fermilab, also contributed to this project.
(Click on image for larger version.)|
Result of the Week Archive
July 19 - July 21|
- During this 48 hour period Operations established one store that,
combined with an existing store, provided approximately 43 hours and 6
minutes of luminosity to the experiments.
- Booster RF had many station trips
- Linac had RF and quadrupole problems
- TeV suffered quench during end-of-store study
- Store 3663 established by mixed mode antiprotons
- I- Source tripped off due to motor generator trouble
View the current accelerator update
View the Tevatron Luminosity Charts
Heartland Blood Center Drive|
The Heartland Blood Center Drive is going to be August 2-3, 2004 from
8:00 a.m. - 2:00 p.m. in the WH Ground Floor ES&H NE Training
Room. The screening process will be in the EOC Room next to the
Communications Center. Heartland needs our support to
make this drive a success. Recent news reports indicate that several parts
of the country are experiencing their worst blood
supply shortages in 20 years, forcing postponement of some surgeries and
cancer treatments. Those dramatic and drastic measures
haven't taken place in the Chicago land area yet.
For appointments you can sign up on online or
contact Lori Limberg x6615 to schedule an appointment. Walk-ins are always
welcome. A Photo ID is required.