Fermilab Today Thursday, September 27, 2007

Thursday, Sept. 27
1 p.m.
ILC ALCPG Physics and Detector R&D Seminar - West Wing, WH-10NW
Speaker: C. Gatto, INFN Lecce
Title: Tracking Studies for the ILC
2:30 p.m.
Theoretical Physics Seminar - Curia II
Speaker: M. Herquet, Université Catholique de Louvain
Title: Twisted Higgs Phenomenology at Hadron Colliders
3:30 p.m.
5 p.m.
UEC Town Hall meeting - One West
Speaker: Young-Kee Kim
Title: Fermilab Steering Group report

Friday, Sept. 28
3:30 p.m. DIRECTOR'S COFFEE BREAK - 2nd Flr X-Over
4 p.m.
Joint Experimental-Theoretical Physics Seminar - One West
Speaker: T. Wright, University of Michigan
Title: Search for Higgs Bosons Produced in Association with b-Quarks at CDF
8 p.m.
Fermilab Lecture Series - Auditorium
Speaker: Dr. Uwe Bergmann, Stanford Linear Accelerator Center
Title: Archimedes: Ancient Writings Under X-Ray Vision
Tickets: $5

Click here for NALCAL,
a weekly calendar with links to additional information.


Mostly sunny 74°/46°

Extended Forecast
Weather at Fermilab

Current Security Status

Secon Level 3

Wilson Hall Cafe
Thursday, Sept. 27
- Tomato Florentine
- *Grilled chicken cordon bleu sandwich
- Chimichangas
- Smart cuisine chicken marsala
- Smoked turkey melt
- Assorted slice pizza
- SW chicken salad w/roasted corn salsa

*Carb restricted alternative

Wilson Hall Cafe menu

Chez Leon

Thursday, Sept. 27

Wednesday, Oct. 3
- Crepes w/ham & gruyere w/Madeira cream
- Marinated vegetable salad
- Baked apples w/crème Chantilly

Chez Leon menu
Call x4598 to make your reservation.


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Special Announcement

Steering Group report presentation this evening

The Users Executive Committee invites all Fermilab employees and users to attend a Town Hall meeting presentation of the Fermilab Steering Group report today from 5 to 7 p.m. in One West. Deputy director Young-Kee Kim will give the presentation.


Pi pole replacement complete

Steel pi poles take the place of wooden ones. FESS plans to use the wood for other projects.

Stretching north from Wilson Hall, 18 new steel poles gleam against the skyline, ready to carry the electricity needed to run the world's highest-energy accelerator. The power poles, shaped like the physics symbol π, represent Fermilab's commitment to modern science and to the surrounding communities.

The city of Batavia paid for the $4 million power-line project, as part of an agreement that lets the city run its high-voltage power lines through Fermilab property. That helped the city avoid placing new power lines near residential areas.

The laboratory received new circuit breakers installed at the north end of the lines. They give the laboratory the ability to turn off power to certain experiments without having to first contact Commonwealth Edison, FESS's Steve Krstulovich said.

Wires and cables stretch across the new metal poles. On Sept. 29, the lines will crackle with energy.

The new pi poles closely resemble the original ones designed by the laboratory's first director Robert Wilson.

"We are as close as you can possibly get to the original design," Krstulovich said.

In his quest to mix architecture and art, Wilson had the original poles specially hand crafted so that the wood curved into the top of the pi shape, a difficult task before the advent of metal electrical poles.

Krstulovich describes the poles as Wilson's "signature artwork."

The original poles lasted for nearly 40 years. Although FESS will take them down, the poles will not disappear from Fermilab. FESS plans to give the old wood new life. The original 15-foot cross arms could add flair and history to future construction projects such as picnic shelters and foot bridges, according to Randy Ortgiesen, FESS department head.

As for the steel poles, Krstulovich says "the new ones will last at least a century."

-- Haley Bridger

From iSGTW

What is a grid? A crash course in grid computing

Grid computing is not only providing scientists with the computing power to push the limits of their science, it is also fueling all-new levels of international scientific collaboration.

iSGTW has devoted an entire newsletter to science grids, but you're not even sure what one is? Get the basics on the biggest thing in information technology today.

What is a grid? Grid computing is a way of connecting computing resources to share their computing power. Computer grids allow access to computing resources from many different locations, just as the World Wide Web allows access to information. These computing resources include data storage capacity, computing power, sensors, visualization tools and much, much more. Using a grid, someone sitting at one computer can harness the combined capabilities of hundreds and thousands of computers, providing researchers with the extra power to make faster progress in their work.

Read More

In the News

Fermilab to participate in Chicago Science in the City

From The University of Chicago, Sept. 24, 2007

The University of Chicago, Argonne National Laboratory and Fermi National Accelerator Laboratory, in collaboration with a dynamic group of businesses, civic, cultural and community organizations, will participate in Chicago's second annual Chicago Science in the City 2007 event. Chicago Science in the City is a compilation of two weeks of events, designed to encourage Chicagoans to explore and experience the various fields of science. Since most of the events are free to the public, participants will have the opportunity experience science first hand.

Read more

Fermilab Result of the Week

Does the top quark have a weight problem?

A measured cross-section of constrained top mass in a top mass - cross-section plane. The hatched areas mark the separate top mass and cross-section measurements. The blue area marks the theoretical cross-section. The CDF physisicts measure a top mass of 170.7+4.2-3.9(stat)± 2.6(syst) ± 2.4(theory) GeV/c2 using 1.2 fb-1 of data collected by the CDF detector.

The top quark is possibly the most fascinating particle. It is the heaviest elementary particle and its mass places constraints on the standard model Higgs boson. This correlation between the two particles prompts us to measure the mass of (or weigh) the top quark as precisely as possible.

The best way to pin something down is to look at it from as many different angles as possible and see if all measurements agree. If they don't then we know our model has a flaw.

Most current methods attack the problem of measuring the top quark mass by fitting distributions and seeing which mass fits the data best. A novel approach by CDF physicists incorporates the additional information that the lighter the mass of the top quark, the more top quarks produced. Therefore, counting the number of top quark candidates provides a constraint on the top quark mass itself.

But they did not stop here. The physicists also looked into one of the hardest channels to understand, the one that results in neutrinos in the final state. Neutrinos fly through our detectors without being noticed, leaving the "signal" of such a top decay consisting of a large amount of missing information.

The relationship predicted by theory matches the measured top mass and cross-section. The top mass is consistent with all other measurements from CDF, but more importantly the technique provides a more precise measurement than the traditional approach of using a fitting procedure alone.

learn more

Clockwise from upper left: Tuula Maki, University of Helsinki and Helsinki Institute of Physics; Jaroslav Antos, Slovak Academy of Science; Roman Lysak, Slovak Academy of Science; Andy Beretvas, Fermilab; and Yen-Chu Chen, Academia Sinica.

Result of the Week Archive

In the News

Pointing the way for accelerator science

From SciDAC, Sept. 19, 2007

Community Petascale Project for Accelerator Science and Simulation

The DOE program of scientific discovery relies heavily on particle accelerators, which comprise 14 of the 28 facilities in the DOE twenty-year outlook on Facilities for the Future of Science. The Community Petascale Project for Accelerator Science and Simulation (ComPASS) will develop a comprehensive computational infrastructure for accelerator modeling and optimization. This will advance accelerator computational capabilities from the terascale to the petascale to support DOE priorities for the next decade and beyond.

Read more


Have a safe day!

Prairie Harvest on Oct. 6
The first 2007 Prairie Harvest takes place in conjunction with National Lands Day from 10 a.m. to 2 p.m on Oct. 6. You can find more information on the event here. Plan to learn more about our ecology and the prairies while participating in a national program.

FNALU inbound e-mail stopped Oct. 1
On Oct. 1, 2007, direct e-mail delivery to FNALU nodes will cease. This change only affects delivery, not how or where mail is read. Unless directed otherwise, forwarded mail will move to the IMAP servers. Users should move their existing mail folders to IMAP. Please read the FAQ for further details. Please contact the help desk at x2345 if you have additional questions.

Exciting Explorations fall program
Exciting Explorations will take place the following dates: Monday, Oct. 8 (Columbus Day); Monday, Nov. 19; and Tuesday, Nov. 20. Additional days may be added if interest warrants. The cost is $35 per day per child. The cost includes two snacks and beverages but not lunch. Please call Patti or Mary Simmons at x3762 to register your child or send an e-mail to request additional days.

Interpersonal Communication Skills
Learn effective communication strategies by assessing your communication style and developing skills for more productive work relationships through the Interpersonal Communications Skills course on Oct. 18. For more information and enrollment, go to the Web site.

Additional Activities

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