Jefferson Lab Weekly Briefs
September 7, 2016
12 GeV Upgrade
The tooling to install the steel shields on the photomultiplier tubes of the CLAS12 Central Time of Flight detector has been delivered. These are the first items to appear from a final order of tooling and installation fixtures for the CTOF; the balance of the order includes the installation arm and transport strong-back needed to install the detector slats into the Solenoid magnet bore. The remaining fast electronic modules, the crate trigger processors, needed to complete the data acquisition and triggering systems for Hall B, have now all been checked out and are installed in Hall B. Finally, the bids have arrived and are being evaluated for the tungsten-based Moeller-electron shield, which is needed to shield the downstream detectors in CLAS12 from that source of background hits. All six Region 1 Drift Chamber sectors have been installed into the Torus magnet support frames, and the first of six Region 2 sectors of the Drift Chamber are also installed.
Jefferson Lab Published Journal Articles, Aug. 29 - Sept. 2
Publications Refresher Course Set for Sept. 23
Center for Theoretical and Computational Physics
The Jefferson Lab Angular Momentum Collaboration has performed the first iterative Monte Carlo analysis of fragmentation functions constrained by all available data from single-inclusive e+e- annihilation into pions and kaons. The IMC method eliminates potential bias in traditional analyses based on single fits introduced by fixing parameters not well constrained by the data, and provides a statistically rigorous determination of uncertainties. The analysis reveals specific features of fragmentation functions using the new IMC methodology and those obtained from previous analyses, especially for light quarks and for strange quark fragmentation to kaons.
Jefferson Lab Calendar of Events
Sept. 19: Safety Shoe Truck on-site
Environment, Safety, Health and Quality
September Is National Preparedness Month
"Don’t Wait, Communicate. Make Your Emergency Plan Today," is Ready.gov’s theme for the month of September. To help you make a plan and be bettered prepared, a variety of weekly discussions and activities have been scheduled. These include:
For more information, including a full list of activities and community events, visit https://www.ready.gov/september.
Computing and Networking Infrastructure
Short Network Outage Possible on Sept. 14
Hall B (SAF111) Safety Awareness Training Updated
Appointments Still Available for TIAA-CREF Individual Counseling Sessions
|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.|