Jefferson Lab Weekly Briefs October 28, 2009
Jefferson Lab Weekly Briefs
October 28, 2009
12 GeV Upgrade
The 12 GeV Upgrade project encompasses accelerator subsystems, equipment for the experimental halls and civil construction, which share technical connections as well as manpower resources and geographical locations. An integrated installation schedule is being developed with input from all groups, including current 6 GeV operations. To support the project installation plan, which includes up to five commissioned cryomodules in the South Linac by November 2011, some equipment installation (such as radiofrequency waveguides) is being planned for the upcoming FY10 scheduled accelerator down periods.
The accelerator delivered beam until the accelerator site lost power at roughly 9 p.m. on Tuesday, Oct. 20, due to a ground fault outside the lab. The accelerator was restored by 10 p.m. the following day. Beam delivery to the halls resumed during Thursday’s owl shift. At around 12:30 a.m. on Tuesday, Oct. 27, the accelerator site lost power again.
FEL staff performed several tests of injector physics this week, despite losing a day of running to an AC power crash. Significant measurements were performed on the injector to characterize the effect of laser pulse shape on the emittance and energy spread of the beam. Several mirror samples were exposed to harmonic flux for analysis at Stanford. Installation of the ultraviolet beamline was finished, but delays in magnet trim cards prevented a beam test this week; it will be done next week. FEL staffers also completed assembly of the spare high-voltage DC gun.
The International Lattice Data Grid is an effort to share the data generated from large-scale lattice QCD simulations, thereby enancing the scientific value of the data. JLab has been a key player in the ILDG from its inception and currently hosts and operates some parts of the U.S. ILDG infrastructure, as described in a new publication <arXiv:0910.1692 [hep-lat]>. JLab staff have already published data generated under its 2007 INCITE allocation and plan further publications after the initial analysis is complete.
JLab's Safety Numbers
105 Days since Last Recordable Accident (JLab record: 331)
JLab Calendar of Events
Nov. 1: Fall Back - Daylight Saving Time ends
Flu Vaccines Update
H1N1 Vaccine: JLab Occupational Medicine is an approved H1N1 vaccination site, but no vaccine has been provided, and there is no way to know when, or if, the supply will arrive. Employees who have access to vaccine from other sources should not wait for JLab's program.
For more detailed information, visit the Occupational Medicine webpage.
SURA Road Closed Thursday for South Connector Road Striping
JLab Reaches Out Through Social Media
Fall Back - Daylight Saving Time Ends Sunday
Last Chance to Donate to United Way
Environment, Safety, Health & Quality
Change Your Clock, Change Your Battery
Don't remember the last time you changed the battery? The Change Your Clock, Change Your Battery campaign (sponsored by the International Association of Fire Chiefs, Energizer, and a network of 6,200 fire departments) encourages Americans to change the batteries in their smoke alarms when they spring forward or fall back for Daylight Saving Time. Take the opportunity to reset your smoke alarms with fresh batteries this weekend.
ES&H Manual Update
Updates were made to ES&H Manual Chapter 5200 and its appendices:
Updates were made to ES&H Manual Chapter 5300 and its appendices:
Computing and Networking Infrastructure
JLab Wireless Access Changes
After Nov. 14:
Tips for Curtailing Spam