Fermilab TodayThursday, November 20, 2003  
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Only 1 day until the lab-wide party!

Thursday, November 20
2:30 p.m. Theoretical Physics Seminar - Curia II
Speaker: S. Wiesenfeldt, DESY
Title: Proton Decay in Consistent Supersymmetric GUTs
3:30 p.m. DIRECTOR'S COFFEE BREAK - 2nd Flr X-Over
4:00 p.m. Accelerator Physics and Technology Seminar - 1 West
Speaker: L. Prost, Lawrence Berkeley National Laboratory
Title: The High Current Transport Experiment for Heavy Ion Inertial Fusion

Friday, November 21
2:00 p.m. Accelerator Physics and Technology Seminar (NOTE TIME & DATE)- 1 West
Speaker: I. Ben-Zvi, Brookhaven National Laboratory
Title: Some Aspects of Accelerator R&D at BNL
3:30 p.m. Lab-Wide Party - Wilson Hall Atrium

Thursday, November 20
Wild mushroom bisque
Baked ziti w/sweet marinara sauce and melted mozzarella $3.50
Slow roasted pork loin w/carmelized onion pan gravy $4.75
Roasted turkey and creamy brie w/wild greens $4.75
Jack crab quesadilla w/peppers and onions grilled on a flavored tortilla w/melted jack cheese $4.75
Hand rolled Hanabi sushi

Eurest Dining Center Weekly Menu
Chez Leon
Weather Breezey 68º/39º

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First NuMI Magnet Installed in Pre-Target Tunnel
NuMI Magnet
The first NuMi quadrupole magnet, safely installed in the pre-target tunnel. The door in the background, nicknamed the "hobbit" door because it is only 5 feet high, is now interlocked to prevent entrance to the Main Injector. (Click on image for larger version.)
On Tuesday, November 18, NuMI's Deputy Installation Manager, Rick Ford, announced the safe and successful installation of the first NuMI quadrupole magnet in the pre-target tunnel. "The magnet was lowered down the approximately 150 foot deep target hall shaft and pulled up the 15 percent tunnel slope on a specially designed installation cart using a winch and pulley system," said Ford. "There is a braking system which prevents the magnet and cart from rolling down the wet tunnel floor if the cable releases or breaks for any reason." Mayling Wong, of the Particle Physics Division, did the engineering for the cart and magnet installation, and Mike Mascione, also of the Particle Physics Division, served as task manager for the rigging company.
NuMI target hall shaft
The 150 foot deep NuMI target hall shaft
Accelerator Update
November 17 - November 19
- Problem with the Tevatron C2 dump delays studies six hours
- Tevatron beam accelerated to flattop
- The H- Source suffers from rainfall

View the current accelerator update
View the Tevatron Luminosity Charts

In the News
From WIRED Magazine
November 2003

Cosmic Reality Check
Surprise! Our little corner of the universe is even smaller than we thought.
By Bruce Sterling
Since the days of Galileo's telescope, new and better scientific instruments have steadily transformed our conception of the universe. Now we've got the Wilkinson Microwave Anisotropy Probe. This superb gizmo, launched in June 2001, is floating 1 million miles from Earth in the second Lagrange Point, measuring the density of the universe with unheard-of digital accuracy and sending data back to mission control.

Already, the probe's findings have provided a few salient new notions about the nature of cosmic reality. For starters, the universe is 13.7 billion years old. Unlike previous figures, this is not a rough estimate; the margin of error is about 1 percent. In addition, the universe is flat. Forget all that mind-boggling space-time-is-curved stuff. Euclid was right all along. And the space-time pancake will expand infinitely. There's no such thing as an end to this particular universe.
read more

Fermilab Result of the Week
The Hunt for Single Top Continues at CDF
CDF Result of the Week
A simplified picture of a single top event, in which a top quark and an anti-bottom quark are produced in a proton-antiproton collision. A particular top quark decay mode is also depicted.
The existence of the heaviest known elementary particle, the top quark, was established in 1995 at Fermilab. This discovery relied on the pair production of top quarks. Top quarks
Brian Winer
Brian Winer (above)
and Richard Hughes
(below) of Ohio State
University, investigate
top pair production
and Higgs boson
physics at CDF. They
made key contributions
to developing the
CDF track trigger
processor, which the
Ohio State group
is currently upgrading.
can also be produced singly, however, at a rate which is calculated to be 2-3 times lower than the rate of pair production. The detection of single top quarks offers a means of measuring the top quark's coupling to the bottom quarks. This coupling is very tightly constrained by theory, yet it has so far not been directly measured experimentally. In addition, single top production
Richard Hughes
Richard Hughes
represents a background to intermediate-mass (110 to 150 GeV/c2) Higgs boson events and therefore it will be important to isolate this background.

Single top detection is challenging due to the huge backgrounds. The CDF collaboration used an optimized strategy based on artificial neural networks to identify single top events in Run I data. The rate of producing single top quarks is measured to be six
Catalin Ciobanu
Catalin Ciobanu of
University of Illinois
at Urbana-Champaign
has worked on
upgrading the CDF
silicon detector and is
further refining the single
top search techniques.
times larger than predicted, but the measurement uncertainty precludes claiming evidence of this process.

Work is in progress to analyze the larger Run II CDF datasets accumulated since March 2001, which will allow experimenters to verify if statistical fluctuations or other factors are responsible for the excess measured in Run I data.

Tevatron University Event Tonight
Pushpa Bhat, FNAL, will speak at UTeV tonight at 6:30 p.m. in One West. The topic, "Advanced Multivariate Methods for your Data Analysis," will focus on multidimensional analysis methods from Grid Search to Neural Networks in a variety of approaches and applications. Free dinner will be served at 6:00 p.m.

Recreation Holiday Tip of the Day
Keep moving--don't make meals the only focal point of your holiday. Plan a special hike with the family; even just a walk around the block after dinner can help you connect and get away from the food.

Fermilab Lecture Series 11/21
Tickets are still available for Friday night's lecture, "Hadron Therapy and Cancer Treatment," presented by Dr. Arlene Lennox, Medical Physicist, Fermilab.
more information

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