Jefferson Lab Weekly Briefs November 24, 2010
Jefferson Lab Weekly Briefs
November 24, 2010
12 GeV Upgrade
Metal wall panels for Hall D have been installed, and the construction contractor is installing flashing. Overhead doors for the Hall D truck ramp are being installed, and the electrical finish work is near completion. The photon beam dump is complete. The design team conducted substantial completion inspections Tuesday. The ready-for-equipment inspection is scheduled for Nov. 30, with representatives from 12 GeV management, the Hall D Group and the ESH&Q Division. The Hall D Group has drafted a conduct of operations document for the initial equipment installation work. This document includes the interface requirements, since the construction site will be dual occupied by JLab staff and the civil construction contractor following the RFE.
PAC 37 Proposals Due Dec. 1
JSA Postdoctoral Research Prize Nominations Due Dec. 1
The accelerator is running well, delivering high-current (150 microamps) beam to Hall C for Q-weak. Thursday beam studies saw some investigation into the 10 kilohertz noise seen in the vertical position of the beam at the halls. While no smoking gun was found, the components of the newly installed Wein filter were eliminated, leaving the prebuncher as highly suspect and subject to possibly more testing at a later date. Sunday Swing shift had some excitement as an uninterruptible power supply for a network switch failed dramatically, releasing smoke and flames. On-call personnel were on scene at the time troubleshooting the initial loss of power and were able to quickly remove power to the failed unit. After some resetting of input/output controllers, beam was back to the halls within a few hours.
The laser ran well this week, and FEL staffers were able to continue characterization studies. The FEL hosted Peter Abbamonte from the University of Illinois, Urbana-Champaign, who provided key insights into new science enabled by new light sources and participated in active discussions with FEL staff about desired parameters. At week's end, The FEL team began preparations for the installation of vacuum ultraviolet characterization equipment.
Facilities Management and Logistics
Planning is underway for a power outage affecting all JLab campus buildings outside the accelerator site, excluding the VARC and ARC, for work on the campus electrical distribution system. The outage is currently scheduled to last for nearly the entire holiday shutdown period, beginning at 5 p.m. on Dec. 23 and ending at 6 p.m. on Jan. 2. There will be no power in these buildings during this period. More details will be announced as plans for the outage are finalized. If you have any immediate questions, contact Rusty Sprouse in FM&L, x7589.
JLab Calendar of Events
Nov. 25-26 Thanksgiving Holiday - JLab closed
Time to Update Your W-4
Personal Dosimeter Change Out Will Be Dec. 22
JAG Offers JLab Merchandise Through Online Store
Holiday Hideaway at the SURA Residence Facility
JLab Children Invited to Winter Wonderland Party
JLab Jackets Available for Purchase