Weak at Last - The last experiment scheduled to run in JLab's Experimental Hall C before the 12 GeV Upgrade is now underway. Find out how scientists are pulling off this demanding experiment, which required a massive installation of new equipment. The partially installed Q-weak apparatus is shown here. |
Record Injection - Over the past few weeks, the operators of JLab's CEBAF accelerator have pumped more spinning electrons into an experimental hall than ever before. Hall C is now taking the highest electron beam current ever provided to a single hall at high polarization: 140-160 microamps at ~89 percent polarization. Before, the record stood at about 100 microamps. A portion of the CEBAF accelerator injector is pictured.
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Ready for Construction - The Test Lab (center) addition and renovation is part of
the Technology and Engineering Development Facility project. One side of the Test
Lab was replaced with a temporary wall, which keeps the weather out and will
minimize dust in work areas during construction. The top portion (green) of the
temporary wall will be replaced in 2011 with permanent panels and windows. The Test
Lab addition will connect through the bottom portion (black), which will be removed
when the renovation is completed in 2012.
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Coming Down - Over the next two weeks, workers will remove 17 concrete panels that make up the south wall of the Test Lab to make way for a 30,000-square-foot addition. The panels are 40 feet tall and weigh about 18,000 pounds each. Once removed, the panels are broken up and recycled. The Test Lab addition is part of the Technology and Engineering Development Facility project.
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Two for the Future - JJLab has received the first two niobium cavities for the upgrade of its accelerator experimental capabilities. The cavities, which will store energy for accelerating a beam of electrons, are undergoing inspection. The 12 GeV Upgrade is a $310 million project that will add 80 new cavities, such as the one shown, to the 338 cavities in the existing CEBAF accelerator. |
Proton Probe - These lead-glass crystals were used in a recent experiment to plumb the depths of the proton with a precision never before achieved. They helped reveal some surprising details of the proton's hidden inner structure. |
Tech Check - Virginia Tech President Charles W. Steger (left) and Jefferson Lab Director Hugh Montgomery examine the empty shell of a cryomodule. Steger is the newest member of the board of directors for Jefferson Science Asssociates, which operates and manages Jefferson Lab. He visited the laboratory on June 15 for briefings and a tour. |
Wide Load - The Material Handling Equipment Storage Building was recently moved to make room for the southward expansion of the Test Lab, a feature of The Technology and Engineering Development Facility project, or TEDF. The storage building was moved to the new gravel storage area behind the Radiation Control trailers. |
Brinkman Addresses JLab - Dr. William F. Brinkman, Director of the Department of Energy's Office of Science, addressed Jefferson Lab staff on the Office of Science perspective during his visit Monday. |
Progress in the Pit - The first lift of Hall D's concrete walls is complete.The walls are approximately 15 feet high and will be about 45 feet tall when finished. Hall D is part of the 12 GeV Upgrade project, which will double the energy of the lab's electron beam accelerator, providing scientists with an unprecedented tool for studying the nucleus of the atom. |
Swap Meet - Jefferson Lab's two accelerators -- the main CEBAF accelerator and the accelerator that powers the Free-Electron Laser -- are virtually identical. In fact, two modular sections of accelerator, called cryomodules, were recently traded between the two machines. Following the swap, CEBAF powered up for experiments in mid-March and the FEL is now coming online. The photos show the CEBAF cryomodule being installed in the FEL vault. |
Bomb Shelter - Could an old-fashioned, lead-lined refrigerator really make a good bomb shelter? The Science of the Movies television show, interviewed Jefferson Lab User and California State University Professor John W. Price about the stunt featured in the last Indiana Jones flick. Watch the show at 8 a.m. on Tuesday, March 23, to see whether Indy really would have been able to walk away without a scratch. |
Strange Wheel - This ferris wheel is part of a system that helped determine just how strange the ordinary stuff around us can be. In the G-Zero experiment, researchers carried out a precisely tuned survey for ephemeral particles that appear only briefly inside matter. |
Taking Shape - Construction crews have begun pouring the foundation for the new Hall D complex, Jefferson Lab's newest and fourth experimental hall. Hall D is a critical part of the laboratory's $310 million 12 GeV Upgrade project, which will double the energy of the lab's electron beam accelerator and provide scientists with an unprecedented tool for studying the nucleus of the atom. |
Seeing Green - This image of a rose leaf was captured with a plant imaging system that is based on the same technology used to conduct PET scans in humans. The ultimate goal of the plant imaging program is to see how plants will respond to rising levels of carbon dioxide in the atmosphere. |
