NEWPORT NEWS, Va. - The U.S. Department of Energys (DOE) Thomas Jefferson NationalAccelerator Facility has awarded three contracts as part of a $310million upgrade project that will provide an internationalcommunity of physicists with a cutting-edge facility for studyingthe basic building blocks of the visible universe.
The lab awarded a contract worth $1.5 million to Ritchie-CurbowConstruction Co. of Newport News for the construction of anaddition to its Central Helium Liquefier building. The expandedbuilding will house much of the equipment necessary to double therefrigeration for the upgraded electron accelerator.
Two additional contracts have been awarded to vendors from Japanand Germany for materials required for the construction of particledetectors and related electronics for Hall D, a new experimentalhall that will be constructed under the 12 GeV Upgrade Project.
A contract worth $3.3 million was awarded to Kuraray Co. ofJapan for nearly 2,000 miles of plastic scintillation fibers for abarrel calorimeter which is the largest detector planned for HallD.
The calorimeter will be 13 feet long, 6 feet in outerdiameter and weigh more than 30 tons. It will detect and measurethe positions and energies of photons produced in experiments. Itsprecision will allow physicists to reconstruct the details ofindividual particle's properties, motion and decay. Precise timinginformation on charged particles collected by the barrelcalorimeter also will allow physicists to identify particles thathave gone undetected (i.e. missing energies).
The final contract was awarded to Acam-Messelectronic GmbH ofGermany, for 1,440 ultra-precise integrated time-to-digitalconverters needed to read out the signals from particles in theHall D experiments. The contract is valued at about $200,000.
The contracts are the first to be awarded since Jefferson Labreceived approval in September to start construction of the 12 GeVUpgrade Project. Under the project, funded by the Office of NuclearPhysics within the DOE Office of Science, the lab will double theenergy of its accelerated electron beam from 6 billion electronvolts (GeV) to 12 GeV and upgrade the equipment in its threeexisting experimental halls, as well as construct the new HallD.
A contract for the construction of Hall D, worth in excess of$10 million, is now under review by DOE and is expected to beawarded in early 2009. The contract will fund the three-year effortto build the labs fourth experimental hall.
Jefferson Lab is a world-leading nuclear physics researchlaboratory devoted to the study of the building blocks of matter -quarks and gluons. The 12 GeV upgrade will enable scientists toaddress one of the great mysteries of modern physics: Why are thereno single quarks?
Jefferson Lab is one of 17 Department of Energy nationallaboratories. It is managed and operated by Jefferson ScienceAssociates, LLC for the DOE Office of Science.
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