Jefferson Lab Weekly Briefs March 31, 2016
Jefferson Lab Weekly Briefs
March 31, 2016
12 GeV Upgrade
Experimental Hall B
The fifth coil (of five) for the CLAS12 Solenoid is nearing the half-way point in winding. Leaks in the helium cooling channel of the bobbin holding the first four coils resulted in schedule delay. The involvement of subject matter experts at Jefferson Lab was critical to development of a leak repair plan, including fabrication of critical parts in our machine shop. The components needed for the Solenoid cold mass assembly are arriving steadily at the vendor, ETI. The Manufacturing Readiness Review of the cold mass assembly procedures is scheduled for March 30.
Experimental Hall C
Major components of all three remaining SHMS magnets are back in the vendor, Sigmaphi, magnet factory in France. The helium vessel that contains the Q3 coil just returned from the metalwork shop. The Q2 magnet is on its transatlantic shipping cradle and is being outfitted with a Cryo-Control Reservoir (CCR). The dipole, most advanced of the three, now has its nitrogen supply/return manifold installed. Once the leak-checking of the nitrogen system is complete, the end-caps will be welded onto the dipole vacuum vessel, concluding the factory assembly of that magnet. Equipment is being readied for checking its magnetic field before it is shipped to Jefferson Lab. Plans for rigging and final assembly of the magnets in Hall C are well-advanced.
Jefferson Lab Published Journal Articles, March 21-25
Remember to submit your papers for approval to the Jefferson Lab Publications database.
JSA Offers Sabbatical and Research Leave Support at Jefferson Lab
Center for Theoretical and Computational Physics
A new article describes the evolution of gluon transverse momentum dependent (TMD) distribution functions, which are important for our understanding of the three-dimensional structure of hadrons. In particular, the paper demonstrates a striking symmetry between the TMD distributions in semi-inclusive deep-inelastic scattering and Drell-Yan reactions. This result is especially non-trivial in the non-linear or saturation region, where a future Electron-Ion Collider will operate.
Facilities Management and Logistics
Effective April 4: Jefferson Lab Entrance at Lawrence Dr. Reopens; Lawrence Access to ARC Closes
During this time, all traffic will enter and exit Jefferson Lab via the Jefferson Avenue entrance at Lawrence to Kelvin Drive, or down Hogan Drive and then to Hofstadter Road or Rattley Road. Follow the posted detour signs. A map showing the excavation/work area and detour routes may be viewed here. The hash-marked area over Lawrence Drive indicates where the road will be closed for this phase.
All construction is scheduled to be completed by early July. This includes repaving Lawrence Drive, Pauli Drive and Rattley Road. If you have any questions about this work, contact Facilities Management and Logistics Manager, Rusty Sprouse, at x7589.
Jefferson Lab Calendar of Events
March 29-31: JLEIC Collaboration meeting
Environment, Safety, Health and Quality
Lead Soldering Stations
For more information, see ES&H Manual Chapter 6680 Lead Program or contact Industrial Hygiene. Remindar: with the number of summer students who may be assigned soldering work as part of their education, their direct supervisor must ensure they have SAF136 training.
Volunteer Now for Jefferson Lab Open House on April 30!
AVS Regional Meeting, Vendor Fair, Poster Session Today in CEBAF Center
Charles Perdisat’s "Last Lecture": William & Mary Physics Department Special Colloquium
Red Cross Blood Drive Scheduled for Tuesday, April 12
Professional Development Lunch and Learn Offered April 5
Education Seeks Projects for Summer Honors Interns; Send Ideas/Proposals in by May 2
Research Assistantship Program Now Taking Nominations
Property Validation Deadline Is Today
|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.|