Jefferson Lab Weekly Briefs July 16, 2008
Jefferson Lab Weekly Briefs
July 16, 2008
12 GeV Upgrade
For the civil construction of the Hall D Complex, the Technical Evaluation Committee completed Phase I of the best value selection process – evaluation of the qualification proposals. The Offerors were notified of the results on July 11. The pre-bid conference and site visit are scheduled for July 21. Also, advance procurement plans (APPs) for the conventional facilities’ FY10 major procurements were finalized and approved on June 30.
On July 22-24, the DOE Office of Science Office of Project Assessment Independent Project Review (IPR) of the 12 GeV CEBAF Upgrade Project will take place at Jefferson Lab. The purpose of this review is to assess all aspects of the 12 GeV Project – technical, costs, schedule, management, and environment, safety, and health (ES&H), in support of attaining Critical Decision-3 (CD-3, Approve Start of Construction).
Several tours went through the accelerator during this period, including tours for the Teacher to Teacher Conference and the Science Undergraduate Laboratory Internship program students. A hurricane power failure test was conducted; the backup generator functioned and critical equipment continued operation without a hitch. Some minor equipment issues are being corrected. In the injector, a bakeout was completed on gun 2. In addition, Mott tests went well.
Free-Electron Laser (FEL)
All of the turning mirror cassettes for the new optical transport system for the IR-FEL are now ready, and the ceiling mounts were installed this week. The gun test stand (GTS) gun was restored for operation following a successful bake. The UV/amplifier line is now taking shape, as vacuum chambers installation has begun. Meanwhile, five electron beam viewers have been assembled for this line. A final highlight marks a major milestone for our users in lab 5, when the first samples were made using the new pulsed laser deposition (PLD) system, in conjunction with table-top lasers. The experiments involved laser exposures of niobium and aluminum in nitrogen to make nitrides.
This week, several Theory Center staff are organizing the XXVI International Symposium on Lattice Field Theory, the largest annual conference on lattice QCD and related topics. The meeting will include updates on progress in areas such as hadron structure and spectroscopy, chiral symmetry, vacuum structure and confinement, algorithms and machines, as well as applications beyond QCD. The conference is being held at the College of William & Mary and brings together more than 300 lattice theorists from around the world.
Computing and Networking Infrastructure
Networking Changes in the VARC
JLab's Safety Numbers
275 Days since Last Recordable Accident (JLab record: 319)
JLab Calendar of Events
July 14-19: Lattice 2008
Environment, Safety, Health & Quality
Air quality in Hampton has reached pollution levels deemed unhealthy for sensitive groups during three days so far this year, with many more days of summer yet to come. Air quality is monitored by the Virginia Department of Environmental Quality. The agency offers this advice for living in areas where air quality is a concern:
More information on air quality can be found on the Virginia DEQ website.
HEPA Vacuum Filter Lesson Learned
The Lessons Learned included the statement, "HEPA devices of unknown history or HEPA devices which are unfamiliar to users should not be used for jobs involving hazardous material contamination or radiological contamination." This statement can be broadly applied to the use of any equipment. Be sure your equipment is configured to operate as intended. Other tips to follow before you use equipment include:
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Office of Science Appoints Deputy Director for Resource Management