 | Thursday, May 18, 2006 |
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Thursday, May 18 2:30 p.m. Theoretical Physics Seminar - Curia II Speaker: M. Stephanov, University of Illinois, Chicago Title: AdS/QCD 3:30 p.m. DIRECTOR'S COFFEE BREAK - 2nd Flr X-Over 4:00 p.m. Accelerator Physics and Technology Seminar - 1 West Speaker: D. Moehs, Fermilab Title: Ion Source Choices, an H-Source for the High Intensity Neutrino Source
Friday, May 19 |
 Rain 65º/41º
Extended Forecast |
Secon Level 3 |
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Thursday, May 18 -Southwestern Chicken Tortilla -Philly Style Cheese Steak -Chicken Pot Pie -Tomato Basil Chicken Parmesan -Southwestern Turkey Wrap -4 Cheese Pizza -Marinated Grilled Chicken Caesar Salads |
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Thursday, May 18 Dinner -Fresh Mozzarella & Tomato Salad -Garlic Shrimp w/Red Peppers & Wild Mushrooms -Lemongrass Rice -Brandi Flan
Wednesday, May 24
Chez Leon Menu |
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The Fermi NICADD Photoinjector Laboratory Laser Lab team members recently won the 2004 Industrial Hygiene Employee of the Year Award, which recognizes Fermilab employees for exceptional management of a hazardous substance or system. "Safety is always the first priority," said Jamie Santucci, member of the Laser Lab team.
The team, led by Helen Edwards, received the award last week for its work on developing a class IV laser facilities lab as part of R&D for the ILC. Class IV is the most dangerous type of laser, used for drilling and welding-or, in this case, knocking electrons off a photocathode and launching them into an accelerating cavity. In their set-up, the laser light shoots through a pair of crystals, each of which cuts its wavelength in half. What begins as infrared light-with a wavelength just longer than the human eye can see-exits the lab room as ultraviolet light, with a wavelength just shorter than we can see. But although the laser is invisible to us, even indirect laser radiation can permanently damage workers' eyes.
To prevent accidents, the Laser Lab team has worked several safety precautions into the system. For example, if an unauthorized person accidently opens the door to the lab while the laser is on, the laser shutters will automatically stop the beam. If the shutters do not close fast enough, a second level of safety cuts the power supply. Although the award is for their work in 2004, Santucci says, "our level of laser safety has been achieved through continuous awareness and work."
*Back row, left to right: Mike Bonkalski, ES&H; Paul Czarapata, AD Associate Division Head for Engineering; Roger Dixon, Head of Accelerator Division; Jed Brown, Associate Director for Operations Support; Helen Edwards, FNPL group leader; Dave Baird, ES&H. Bottom row, left to right: James Santucci and Ray Fliller, FNPL Laser Lab team members. Not pictured: Adrian Melissinos, who led the team from the University of Rochester that built the laser from scratch; Jianliang Li, who ran the laser lab during 2004; and team members Rodion Tikhoplav and Philippe Piot.
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| DOE Review Poster Display |
Each year, Fermilab researchers pull out the posterboard and think up colorful ways to summarize their research for the Annual DOE Program Review. This year's posters are on display now through May 22 on the 15th floor, and they provide an excellent overview of the research happening at Fermilab. If you can't get away from the desk, you may view a sampling of the 33 posters here.
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| How big is big? Probing the conditions of the universe on the largest scales | SDSS Press Release, May 15 Since the 1970s, astronomers have discovered structures in the three-dimensional distribution of galaxies on ever larger scales, up to hundreds of millions of light years. Today, researchers from the Sloan Digital Sky Survey (SDSS-II) announced the first measurements of galactic structures more than a billion light years across. Read more... |
| Fermilab featured in Scientific American Podcast yesterday |
In a Podcast yesterday, Scientific American edtior Mark Alpert spoke to host Steve Mirsky about his
experience visiting Fermilab and going inside the Tevatron. You can read a summary and listen to the podcast here.
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New York Times May 18, 2006: Renewing America's Commitment to Research in High-Energy Physics In October 2003, I gave an evening talk at the Fermi National Accelerator Laboratory in Batavia, Illinois. The subject was nature on the familiar scale, the kind embodied in the restored prairie on the Fermilab campus - some 1,200 acres of compass plant and rattlesnake master and other species. But it's impossible to visit a place like Fermilab without thinking about nature on another dimension, the subatomic one being studied in the Tevatron collider, which looks from the sky like an enormous, moated ring.
In the Tevatron, subatomic particles are accelerated to extremely high speeds and crashed into each other within a detector chamber. That afternoon, I clambered through the scaffolding around the detector chamber as scientists tried to explain to me what it all meant. To me it looked like an incomprehensible array of electronics several stories high. The detector's purpose is to capture a computerized image of the debris of each antiproton-proton collision. The particles that emerge - varieties of quarks and mesons, for instance - seem at first to have nothing to do with nature as we know it on the human scale.
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| Beauty and Charm are fleeting | ||
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The Bc meson is a particle possessing both
charm and beauty. Formed from a beauty and a charm quark, the
Bc is expected to be the heaviest meson with distinct
quarks. A key question for physicists is how long this unstable meson
will exist before decaying. The answer will provide insight as to how
heavy quarks can form together and how they interact. The
Bc meson was discovered by CDF in 1998 with only 20
Bc signal events, not enough to measure the lifetime.
Run 2 at the Tevatron is the only place which can
provide the opportunity for this lifetime measurement. CDF has recorded the largest number of Bc events in the world, by taking advantage of its speedy online filtering system that selects events consistent with b meson decay by carefully tracking the particles in the silicon vertex detector and central tracker. The most recent Run-II Bc lifetime measurement is obtained from events where the Bc decays to an electron and another meson called a "J/Psi," which is a charm quark plus an anticharm quark. Using selection criteria based on this unique signature, CDF finds a Bc signal of 238 events. The lifetime of the Bc was measured to be 0.463 ± 0.069 ± 0.036 10-12 seconds, the most precise Bc lifetime result to date. The precision of this result begins to reach the level needed to separate various theoretical models of quark interactions, and will improve as more Run 2 data is collected. | ||
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| Result of the Week Archive
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Extending the Grid by 'EPIC' Proportions
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Success in the knowledge age requires cyberinfrastructure-
computing resources, applications for research and learning, data repositories and tools for data analysis and long-distance collaboration.
Read More |
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C++ Classes offered June 5 On June 5, Fermilab will offer the first session of Accelerated C++: A Short Course in Practical Programming by Example. Course registration is now open. Course Announcement and Syllabus.
Batavia Road entrance closed to cars and bicycles
Power Outage |
