Jefferson Lab Weekly Briefs September 25, 2013
Jefferson Lab Weekly Briefs
September 25, 2013
12 GeV Upgrade
The Office of Science Energy Systems Acquisition Advisory Board (ESAAB) met on Sept. 4 to review the Baseline Change Proposal for the 12 GeV CEBAF Upgrade Project. The ESAAB representatives recommended approval, and the formal approval document was signed by the Acquisition Executive. This action established a new baseline for the project with a completion date of September 2017.
Center for Theoretical and Computational Physics
A first principle calculation of the deuteron and its properties would be a theoretical milestone on the path toward calculating quantities of importance in low-energy nuclear physics from quantum chromodynamics (QCD). New work presents the necessary formalism and methodology to determine two-nucleon scattering parameters from lattice QCD. In particular, it demonstrates that the central and tensor nuclear forces present in the 3S1-3D1 two-nucleon channel, as well as the deuteron binding energy, can be reliably extracted from such calculations.
The Metrology group (alignment/magnet measurement) continues to support the installation of components for the 12 GeV machine. Over the last week or so, the group has:
Additionally, the Machine Shop reports that work on modifications to the 750 MHz Electron-Ion Collider (EIC) crab cavity, as well as on Hall B's CLAS 12 High Threshold Cerenkov Counter (HTCC) mold mirrors foam substrate facet blocks 1L and 1R; these are being cut to size on the shop's five-axis machine. The shop has processed 147 job requests since Aug. 5.
JLab Calendar of Events
Sept. 26: All-Hands Meeting
Environment, Safety, Health and Quality
Electrical Safety Considerations
Jefferson Lab has many types of equipment that use electricity, from low-voltage signal systems to the CEBAF accelerator, which requires its own substation. These electrical systems are well designed, installed and tested before the average person "operates" the system. When things go wrong, it is generally when either an untrained or inadequately trained person tries to manipulate electricity that is not in their scope of training or abilities. Those who have been trained, such as qualified electricians, technicians and engineers, know their limitations. If you do not know if you are a trained electrician/technician, you are not; therefore, you must not attempt to do any type of electrical work. If some system needs electrical work, request that support through the Work Request system or the appropriate means for your equipment.
United Way Campaign Kicks Off Oct. 2
Come Hungry to the United Way Picnic on Oct. 2
2014 Calendar Preview
Online Auction Site Lets You Bid on Excessed JLab Property
2013 Fall Golf Outing Registration Due Oct. 11
TEDF Dedication Ceremony R.S.V.P. Due
Tracking Thomas at Jefferson Lab
Buddhini Waidyawansa correctly guessed the location for Sept. 11. Honorable mentions go to Samika Hawkins, Josh Magee, Dick Owen, DeAnn Maddox, Kim Kindrew, Mark Weihl, Casey Heck, Ron Bartek and Ryan Bodenstein. 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.|