Jefferson Lab Weekly Briefs September 15, 2010
Jefferson Lab Weekly Briefs
September 15, 2010
12 GeV Upgrade
Facilities Management & Logistics personnel are preparing solicitations for two 12 GeV civil procurements. The FY11 procurements include work to be performed during the six-month accelerator shutdown. One will involve the low conductivity water systems in the North and South Access Buildings, which will be upgraded to increase the capacity. The water will be drained from the LCW systems to facilitate reconfiguration of the piping. The design review for this procurement package is scheduled for Sept. 17. The second FY11 procurement includes two new penetrations into the tunnel at the beam switchyard. During the FY10 summer Scheduled Accelerator Down, the locations of these penetrations were identified by representatives from Facilities Management & Logistics, Survey & Alignment, Accelerator Operations and Accelerator Power Systems.
AIP State Department Fellowship Application Deadline is Nov. 1
The last of the tunnel work before daily lockup is underway. Recovery coordinators are meeting everyday. Injector hot checkouts began in prep for injector work with beam. HCOs of harps, valves and beam position monitors are underway. Arc 10 stands continue to be aligned and grouted. Arc magnet shim checks have been completed, and failed shims have been re-epoxied into place. The Arc #2 box supply was replaced with a spare. End Station Refrigerator Turbine #1 was replaced, but failed testing; the brake housing cleaned, and the unit will be retested later. A Turbine #2 cooling water flow switch problem was fixed. There was a South Linac power outage to install additional circuits for the expansion of service building equipment. The Central Helium Liquefier tripped, and a sensor was replaced. The Personnel Safety System functional certification for all zones, pressure vessel code reinspections and the W1 building CAMAC to VME conversion tasks were completed. Superconducting radiofrequency commissioning of cryomodules 1L08 and 2L15 began over the weekend, as was injector laser hut checks. The coming week will see as much as possible locked up for HCOs and SRF commissioning.
The laser started robustly after the holiday, and initial characterization indicates the performance exceeds expectations. In particular, the FEL team observed an impressive turn-on and can lase with a 10-microsecond macropulse.
Center for Theoretical and Computational Physics
The new Associate Director for Theoretical and Computational Physics has arrived. Michael Pennington is from Durham University in the UK, where he was dean for educational outreach as well as a professor in the Institute of Particle Physics Phenomenology. Pennington's research interests are in strong-coupling QCD, studying how the confinement of quarks and gluons determines the nature and interactions of the hadrons we observe. His research not only overlaps with the interests of other members of the group, but strongly complements the current and future experimental programs at JLab. His priority is to work closely with experimental groups to ensure the 12 GeV upgrade provides definitive answers to key questions in strong interaction physics. This will guarantee continued recognition for the unique role JLab plays in world nuclear physics and provide a springboard for securing the lab's longer term plans.
JLab's Safety Numbers
16 Days since Last Recordable Accident (JLab record: 331)
Environment, Safety, Health & Quality
Maximo Requisition System Change Regarding Selection of Vendors for Class A or B Welding
Additionally, below the initial question, there is a link to an approved vendor list. This list contains vendors that have been pre-qualified to perform these types of welding and brazing operations. If you notice that a preferred vendor is not on the list, contact Danny Lloyd, x7121.
Further questions about this process and the Quality Assurance oversight of welding processes for purchased services/material may be addressed to Michael Martin, x5515, or Bruce Lenzer, x7586.
Computing and Networking Infrastructure
Major Systems Outage on Saturday, Sept. 18
New Computer Center Web Pages
Mac Support In the Works
Radiation Control Building Only Accessible Via Detour Route
Patent Your Bright Ideas at JLab
Dust Off Those Golf Clubs for the JLab 2010 Fall Golf Tournament
JLab Calendar of Events
Sept. 20: Safety Shoe Vendor onsite