Jefferson Lab Weekly Briefs January 12, 2017
Jefferson Lab Weekly Briefs
January 12, 2017
12 GeV Upgrade
The Torus magnet for CLAS12 has been parked at a temperature of 80 Kelvin for the past two months awaiting the upcoming beam run in Hall B. t will be brought back down to liquid helium temperature at the end of January to prepare for the run. The drift chambers have all been suspended from the Torus cryostat and had their services attached, and the Forward Carriage has been rolled upstream to its operating position next to the Torus.
The five coils of the Solenoid magnet have now been spliced into one continuous circuit, and the resulting magnet “cold mass” has been covered with reflecting aluminum foil. The radiation shields are now being fit to the outer circumference of this assembly. After this step, the multi-layer insulation blankets will be added and then the entire assembly will be suspended inside the cryostat outer shell; eight suspension links are welded to the cryostat and then attached to the cold mass by insulating links in this step. The conical end regions and the bore tubes of both the radiation screen and the cryostat were prepared earlier and will be attached after the cold mass is suspended from the cryostat outer shell in order to close the cryostat. Planning for shipping the Solenoid to Jefferson Lab is well underway, including the final steps in the design of the shipping cradle and isolation springs needed for the road trip to Virginia.
L’Oréal-UNESCO For Women in Science Program Applications Due Feb. 3
Nominate A Colleague for the 2017 Outstanding Nuclear Physicist Award
Center for Theoretical and Computational Physics
A new paper shows how a thorough amplitude analysis of the data available for the Zc(3900) peak, seen by BESIII and Belle, can help with constraining phenomenological models. It discusses possible scenarios of a QCD state, a virtual state, or a kinematical enhancement. Although the current data are not precise enough to distinguish between these hypotheses, the proposed method may shed light on the nature of these exotic enhancements when applied to data from forthcoming high-statistics measurements.
Jefferson Lab Calendar of Events
Jan. 13: Mobile Mammography on-site
Environment, Safety, Health and Quality
Winter Weather: Watch for the Warning
The Emergency Management Team monitors all types of weather conditions and has plans in place to provide notifications to staff and users in the event of severe weather conditions. Facilities Management & Logistics is also prepared for winter weather, and plans are in place for a variety of situations.
Computing and Networking Infrastructure
IT Maintenance Day, Tuesday, Jan. 17, 5-7 p.m.
Jefferson Lab MFA Roll-Out Continues
Sentara Mobile Mammography Unit On-Site January 13
Volunteers Sought to Help with Engineering/STEM Career Days on Feb. 23-24
Red Cross Blood Drive Scheduled for Tuesday, Jan. 24
|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.|