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
THERE WILL BE NO WINE & CHEESE TODAY
THERE WILL BE NO JOINT EXPERIMENTAL THEORETICAL PHYSICS SEMINAR THIS WEEK
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
First NuMI Magnet Installed in Pre-Target Tunnel|
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.
The 150 foot deep NuMI target hall shaft|
From WIRED Magazine |
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.
The Hunt for Single Top Continues at CDF|
|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
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
Brian Winer (above)|
and Richard Hughes
of Ohio State
top pair production
physics at CDF. They
made key contributions
to developing the
CDF track trigger
processor, which the
Ohio State group
is currently upgrading.
represents a background to intermediate-mass
(110 to 150 GeV/c2) Higgs boson events and
therefore it will be important to isolate this
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
times larger than predicted, but the measurement
uncertainty precludes claiming evidence of this
|Catalin Ciobanu of|
University of Illinois
upgrading the CDF
silicon detector and is
further refining the single
top search techniques.
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.