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JLab FEL Wins R&D 100 Award
July 26, 2005

In research performed at the Department of Energy's Jefferson Lab, nuclear physicists have found that strange quarks do contribute to the structure of the proton. This result indicates that, just as previous experiments have hinted, strange quarks in the proton's quark-gluon sea contribute to a proton's properties. The result comes from work performed by the G-Zero collaboration, an international group of 108 physicists from 19 institutions and was presented at a Jefferson Lab physics seminar June 17.

This single cell cavity was made from a single crystal of niobium. Made in the same shape as the low-loss design proposed as an improvement to the baseline for the International Linear Collider (ILC), this cavity performs much better than the ILC design goal.

Washington, D.C. — Five Virginia universities unanimously approved the nomination of Anthony W. Thomas, Chief Scientist at the U.S. Department of Energy's Thomas Jefferson National Accelerator Facility (Jefferson Lab) in Newport News, Va., to a distinguished professorship at The College of William and Mary. Thomas is a theoretical nuclear physicist and the Chief Scientist, and he also heads the Lab's Theory Group.

Mark Smith, Detector Group Biomedical Imaging Physicist and project manager for this effort, holds the tungsten box encasing the detector head for the mini gamma camera that Jefferson Lab's Detector Group built for the German Can

New results from research performed at the Department of Energy's Jefferson Lab hint that strange quarks may contribute to the proton's magnetic moment. If confirmed by data to be taken later this year, these surprising results would indicate that strange quarks in the proton's quark-gluon sea contribute to at least one of the proton's intrinsic properties. The HAPPEx results strengthen the trend found by the SAMPLE experiment at MIT-Bates and the A4 experiment at the Mainz Laboratory in Germany.

New data from the Department of Energy's Jefferson Lab shows the pentaquark doesn't appear in one place it was expected. The result contradicts earlier findings in this same region and adds to the controversy over whether research groups from around the world have caught a glimpse of the so-called pentaquark, a particle built of five quarks.

Scientists have found that a dose five times higher than the FDA-recommended dosage of potassium iodide in the event of a nuclear accident is needed to protect small animals effectively from radioactive iodide in medical imaging procedures. The long-term animal nuclear imaging project is being conducted by a collaboration of biology and physics researchers from the Department of Energy's Jefferson Lab and The College of William & Mary (CWM).

Steve Gagnon, Science Education, doing the popular "Deep Freeze (cryogenics)" presentation at the 2003 Open House.Photo credit: Greg Adams.

One of the most frequently accessed pages is the "Who Wants to Win $1,000,000 Math and Science Quiz

Hall C Leader Rolf Ent discusses the dynamics of an experiment with visitors in Hall C.Photo: Greg Adams, Jefferson Lab

World Year of Physics 2005: Einstein in the 21st Century

Jefferson Lab plans Open House for Saturday, April 16
March 16, 2005

Newport News, Va. — Two young physicists participating in research at the Department of Energy's Jefferson Lab have joined nearly 30 other scientists in celebrating the World Year of Physics through blogging in "Quantum Diaries." Sarah Phillips, from the United States, and Claire Gray, from South Africa, have just begun their blogging adventures.

Jefferson Lab hosts two World Year of Physics events in March
March 7, 2005
March 16
Einstein's Biggest Blunder: A Cosmic Mystery Story
A World Year of Physics Series Lecture by Professor Lawrence Krauss, internationally known theoretical physicist from Case Western Reserve University and best-selling author.
CEBAF Center Auditorium, beginning at 7 p.m.