Jefferson Lab Weekly Briefs December 4, 2013
Jefferson Lab Weekly Briefs
December 4, 2013
12 GeV Upgrade
Significant progress continues to be made as the 12 GeV Upgrade Project transitions from construction to pre-operations and commissioning of the accelerator. The first phase of the Accelerator Readiness Review (ARR) is complete, and the letter approving the start of accelerator commissioning has been received from the Thomas Jefferson Site Office. In the experimental halls, the new detectors are being assembled/upgraded and installed in both Halls B and D. In Hall C, the Super High Momentum Spectrometer carriage and detector hut are taking shape, and Hall A is preparing for the ARR Phase 2.
It is important to remain focused on safety as the remaining accelerator work is done. The lab has revisited the near-term schedule to ensure that the work load can be completed without jeopardizing safety. Everyone is reminded that safety is not a passive process, and all must actively evaluate the hazards of the tasks at hand. If there are any questions or concerns, always stop, assess, resolve and then move forward.
Jefferson Lab Published Articles, Nov. 25-29
Remember to submit your papers for approval to the Jefferson Lab Publications database. The next Publications Refresher Course will take place Monday, Dec. 9 at 9 a.m. in CEBAF Center room F226. To attend, R.S.V.P. to Kim Kindrew.
Center for Theoretical and Computational Physics
There is growing evidence for the existence of hadrons that fall beyond the ordinary quark-antiquark classification. A new paper applies low-energy constraints to compute the Regge trajectory containing the scalar σ meson. The resulting trajectory is found to be very different from quark model expectations, which adds to the mounting evidence that the σ meson is not an ordinary quark-antiquark resonance.
There is an update to the 12 GeV Machine Configuration Beam Transport drawings (common name is songsheets). There are 43 new drawings that have the finalized names and locations of equipment throughout the accelerator and the halls. Web links to these drawings should be available within the next week.
The Document Control Office, located on the 2nd floor of the ARC Building, no longer posts the names of authorized personnel allowing "after-hours" access. After-hours access to the Document Control Office is only available using the current procedure of contacting the Security Office, who in turn will contact Butch Dillon-Townes, Terrie Fuell or Bridget Paul for permission to enter the office.
JLab Calendar of Events
Dec. 9: Safety Shoe vendor onsite
Environment, Safety, Health and Quality
Fluorescent Light Bulb Safety and Disposal
The Department of Energy website is currently featuring a piece on The History of the Light Bulb for consumers. For more information on what to do in case of mercury contamination at home, see this EPA website.
Personal Dosimeter Changeout Set for Monday, Dec. 16
Travel Requirements Briefing for Travelers
Lab Phones to Display Tornado Siren Notification for Friday Test
Sentara Mobile Mammography
Open Enrollment Underway for GSRA
2014 General Access RWP Is Available
Holiday Party for Jefferson Lab Children and the Young at Heart
Volunteers Needed to Help With the Holiday Party
Toys for Tots Toy Drive
Ready, Set, Hang Those Decorations
Tracking Thomas at Jefferson Lab
Silvia Niccolai, Maurizio Ungaro, Ron Bartek and Jason Willoughby correctly guessed the location for Nov. 27. Honorable mentions go to Anna Shabalina, April Sessoms, Marcy Stutzman, Debra Brand and Michael Haddox-Schatz. 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.|