Jefferson Lab Weekly Briefs October 16, 2013
Jefferson Lab Weekly Briefs
October 16, 2013
AIP Seeks Applicants for State Department Fellowship
Center for Theoretical and Computational Physics
The Jefferson Lab Angular Momentum (JAM) Collaboration has released the first results of a new global next-to-leading order analysis of spin-dependent parton distribution functions from the most recent data on inclusive polarized deep-inelastic scattering. It is the first such analysis to systematically include target mass and higher twist corrections to the g1 and g2 structure functions and nuclear smearing corrections for deuterium and 3He data. The study explores the effects of Q2 and W2 cuts in the data sets, and the potential impact of future data from Jefferson Lab and elsewhere on the behavior of the spin-dependent parton distributions at large momentum fractions x.
The Installation and Vacuum groups are wrapping up their work on the accelerator ring portion of the 12 GeV Upgrade and getting ready for run number 1. All accelerator ring magnets are installed, beamline fabrication and installation is complete, vacuum leak checking and pump down are nearing completion. Low-conductivity water plumbing installation is being completed in the transport recombiner and the line D tunnel ramp. Penetrations are being filled back up with stone and sealed. Hot checkout of the magnet LCW system has been completed for the ring, with just punch list items left to complete. The Vacuum group hot checkout process is well under way and will continue to support the first machine run.
JLab Calendar of Events
Oct. 18: JAG Fall Golf outing
Computing and Networking Infrastructure
Copying and Printing Conservation of Resources
Flu Vaccine Available
Robotics Team Needs a Coach
BEAMS Seeks Volunteers for 15 Minute Role Model Visits
United Way Campaign Underway
Tracking Thomas at Jefferson Lab
Damon Rath and Silvia Niccolai correctly guessed the location for October 9. Honorable mentions go to Casey Heck and Narciso Gomez. Check out Tracking Thomas on flickr for a better view of his last location and this week's new mystery photo.
|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.|