Jefferson Lab Weekly Briefs May 28, 2014
Jefferson Lab Weekly Briefs
May 28, 2014
12 GeV Upgrade
On the evening of May 7, 10.5 GeV beam was delivered to the Hall D tagger dump. This completed the 12 GeV Upgrade Project beam commissioning goals for FY14. More importantly, it sets the stage for detector commissioning in Hall D this fall. Work is progressing on completing the magnet power supply installation and checkout for extraction on passes 1, 2, 4 and 5 and the beamlines to Hall B and Hall C. Final checks of the instrumentation for the Hall D tagger vault are nearly completed. Work continues on the nano-Amp beam position monitor system for the Hall D beamline; procurements have been placed ,including those for the cavity fabrication.
JSA Sabbatical and Research Leave Support at Jefferson Lab
Jefferson Lab Published Journal Articles, May 19-23
Remember to submit your papers for approval to the Jefferson Lab Publications database.
Center for Theoretical and Computational Physics
A QCD picture for scattering of mesons from hadrons at high energies implies that the projectile meson decomposes into a quark-antiquark pair that interacts with the target. The fast-moving quarks are described by Wilson-line operators, and the energy dependence of the scattering amplitude is governed by the rapidity evolution of a "color dipole" formed by the two Wilson-line operators. In the case of baryons, the corresponding operator consists of three Wilson lines, and to describe the high-energy scattering of baryons, one needs the evolution equation for these "color tripole" operators. This equation was recently derived in perturbation theory at next-to-leading order in the strong coupling constant.
Facilities Management and Logistics
Part of Lawrence Drive to Become One-Way Only
The one-way street will start at the intersection of Lawrence Drive and Hofstadter Road and will continue to Hogan Drive. Those traveling north on Lawrence Drive will be required to turn onto Hofstadter Road to exit the lab. The use of Hofstadter Road will also be required when leaving the Applied Research Center and Support Services Center parking lots if you wish to exit the lab using Hogan Drive.
The one-way conversion of Lawrence Drive will occur on June 15. Awareness signs will be posted around the affected area to provide proper notification of the change.
Hogan Drive Roadwork
Training Sessions for Geometric Dimensioning and Tolerancing
Environment, Safety, Health and Quality
Counterfeit Electrical Products
Jefferson Lab has an Electrical Equipment Safety Inspection Procedure to help protect against unsafe electrical equipment being used at the workplace. For information on this procedure, refer to the ES&H Manual Chapter 6200T1.
Computing and Networking Infrastructure
Short Phone Outages on Saturday, May 31
To avoid problems and delays, be sure to have your card renewed between June 2 and July 11. Once the expiration date passes, the card will no longer work, and the user will not be able to log in to Jefferson Lab systems using the card. If you have any questions or concerns, contact the IT Division Helpdesk, x7155.
Jefferson Lab Spam and Virus Filter Software Changing
Upcoming Jefferson Lab Pager Audit
Pressure Systems Awareness Training Offered
Electronic Tour Database
Jefferson Lab Calendar of Events
May 27-29: Hypernuclear Collaboration Meeting
|JLab Weekly Briefs is an ongoing publication providing information on the status of safety, accelerator operations, experiments, free-electron laser, reviews, upcoming activities and special events. Deadline for submission is every Tuesday by 10 a.m. Submit new items to: Public Affairs or contact Kandice Carter at x7263.|