Jefferson Lab Weekly Briefs January 16, 2008
Jefferson Lab Weekly Briefs
January 16, 2008
12 GeV Upgrade
Design effort on the conventional facilities to support the 12 GeV CEBAF Upgrade continues to progress. On Dec. 20, the Design and Safety Review meeting on the 100 percent design of the North and South Access Building Additions was held at Jefferson Lab. Facilities Management and Logistics is focused on completing the 100 percent designs for the Beam Switchyard (BSY) Addition and the North and South Access Utility Upgrades this month. On Feb. 1, the Architect-Engineer (A-E) firm, HSMM (Hayes, Seay, Mattern & Mattern), is scheduled to submit the draft Final Design documents of the Hall D Complex for JLab review.
In Hall A, the Coulomb Sum Rule experiment E05-110 is presently running (Jan. 14) the penultimate of the 17 energies scheduled for this experiment; it's on track to have accumulated all the required data by Wednesday, Jan. 16.
In Hall C, GEp-2γ (E04-019) has completed data taking on two of three kinematic data points. The remaining data taking on the partially completed third point is scheduled to resume later this week.
The accelerator ran exceedingly well during this period, with a realignment of a section of beam pipe in the North Linac the only corrective action necessary. Up to Jan. 11, the three experimental halls received 162 hours of beam. After a change to the very low energy of 400 MEV ½ pass on Jan. 11, only Hall A was taking beam and to date (Jan. 15), Hall A has received 50 hours of beam at the new energy.
Free-Electron Laser (FEL)
This week, FEL staff completed a major milestone in certifying the gun test stand and the FEL for independent operation. The GTS gun high-voltage conditioning was then begun by ramping and soaking immediately at 330 kilovolts. At the same time, the FEL gun and adjacent beamline bake was completed. FEL staff are continuing to process the GTS high voltage on 24-hour shifts.
JLab's Safety Numbers
119 Days since Last Recordable Accident (JLab record: 319)
JLab Calendar of Events
Jan. 14-18: PAC 33
2008 Lab Holiday Observances information posted
Adopt-A-Spot Litter Pickup event on Jan. 25
Environment, Safety, Health & Quality
Lab staff members recently expressed concern about the number of deer sighted around the JLab campus. The following are basic safety tips for driving near deer from the Insurance Information Institute:
PNNL Electrical LO/TO Lesson Learned
Computing and Networking Infrastructure
Automatic Installation of Microsoft Office
E-Mail changes to impact users of Pine, Mutt and mailx clients
The changes that will take place are two-fold:
Additional changes that will affect all users and where you store your e-mail folders will take place later in the spring/summer. Announcements will be made regarding those changes at a later date.
Scientific Computing Users Meeting on Jan. 23