Jefferson Lab Weekly Briefs September 2, 2015
Jefferson Lab Weekly Briefs
September 2, 2015
12 GeV Upgrade
The four regions of the Silicon Vertex Tracker (SVT) for CLAS12 have been successfully mounted as a single unit onto the permanent support structure and then tested. Cosmic and other tests will be ongoing while the SVT awaits installation into CLAS12 in late 2016. On the High Threshold Cerenkov Counter (HTCC), installation has been completed of the main mirror, the gas windows, the photomultiplier tubes, and the light monitoring system. The HTCC will now undergo testing. The construction of the support structure for the Central Time of Flight has begun, as has fabrication of parts for its light monitoring system and its transport crate. Refurbishment of the second and third of the six sectors of the Low Threshold Cerenkov Counter (LTCC) is well advanced. The sealing of the new LTCC window has been demonstrated on the first box, and the seal was then tested successfully with actual counter gas. An order has been placed for the remaining fast electronic modules, the crate trigger processors, which are needed to complete the data acquisition and triggering systems for Hall B. Orders have also been placed for the remaining network gear and fibers. Work is underway for the slow controls to operate all elements of CLAS12. Finally, the design work on the upgraded beamline elements has started in preparation for their installation in early 2016.
Jefferson Lab Published Journal Articles, Aug. 24-28
Remember to submit your papers for approval to the Jefferson Lab Publications database.
Center for Theoretical and Computational Physics
In a new paper, the properties of two-baryon systems in strong uniform static magnetic fields of |B| ~ 1019-1020 Gauss are studied. Such systems are shown to exhibit Feshbach resonances in this setting. Fields of this strength may exist inside magnetars and in peripheral relativistic heavy ion collisions, and the Feshbach structure may have consequences for the behavior of these systems.
Jefferson Lab Calendar of Events
Sept. 7: Labor Day holiday; Jefferson Lab closed
Environment, Safety, Health and Quality
Last Summer Picnic Weekend
As you plan to celebrate the long holiday weekend, don't forget to take the steps that you need to keep you and your family safe. Take a few extra minutes to better secure potential hazards in your home or establish some precautions for visitors. When visiting others, ensure that you and your family take extra care around their homes. Finally, make sure one or several adults are responsible for keeping tabs on children around water sports, cooking areas, lawn games, garages and other areas.
Computing and Networking Infrastructure
Jefferson Lab Campus-Wide Phone Outage: Saturday, Sept. 12
To Get Help and Report Emergencies During the Outage:
Inquiries during the outage can be made to Jefferson Lab Security’s cell phone at 757-342-9868. For more information regarding this outage, contact the IT Division Helpdesk, x7155.
Submit Your Intellectual Property Now Through New Inventor Portal
Changes to Direct Deposit for Jefferson Lab Business Travelers
Come See Posters for SRF Conference
Marketplace at Tech Center Store Openings Announced
Tornado Warning Siren Test Set for Friday, Sept. 4
2015 Jefferson Lab Fall Golf Outing Set for Sept. 18
|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.|