Jefferson Lab Weekly Briefs September 11, 2013

Jefferson Lab Weekly Briefs
September 11, 2013

12 GeV Upgrade

The Super High Momentum Spectrometer support carriage and shield house assembly is progressing in Hall C. The SHMS support carriage steel structure is complete, and forming for the concrete shield house has started. The site safety plan has been approved, and the Preliminary Hazard Analysis has been performed by the subcontractor. Due to the unique nature of the proprietary concrete mixture, some of the batching will be performed on site. The vendor responsible for mixing the concrete is setting up to verify the exposure control plan through off-site air monitoring prior to batching. Jefferson Lab’s Industrial Hygiene and 12 GeV Safety Manager will monitor the process.


APS/AIP Postdoc Science Policy Fellowship Announced
Applications are now being accepted for the joint American Physical Society (APS) and American Institute of Physics science policy fellowship at the U.S. Department of Education within the Office of Planning, Evaluation and Policy Development. The selected fellow will spend up to two years working on science, technology, engineering and math education policy and programs. The application deadline is Sept. 20. More information can be found in the original announcement.


With the end of the Long Shutdown (LSD) nearing, EES groups have been busy finishing up installation of 12 GeV upgrades and starting system checks to prepare for the accelerator start up. The Safety Systems group (SSG) has been busy supporting integration of new components into the Personnel Safety System (PSS) and preparing for the semi-annual certification of the PSS. Certification involves testing every input and output of the safety systems. The tests culminate in actual turn on and shut down of interlocked equipment. In preparation for the upcoming run, beam loss monitors are restored throughout the accelerator. Over the coming weeks, the SSG will be testing the complete machine protection system.

The Radiofrequency group is completing power testing of the last new 12 GeV RF zone prior to connection to the final C100 cryomodule for commissioning. The group has also been engaged in completing the re-installation of 80 modified RF circulators in all 12 GeV RF zones. Assembly work is being completed on a final C50 RF zone and on the Injector R100 RF system. Finally, the RF group has continued supporting the superconducting radiofrequency recovery and re-commissioning of all the CEBAF cryomodules that were warmed up to room temperature during the shutdown.

The DC Power group is in the process of completing the hookup of all magnets that were installed, re-built or reconfigured during the LSD. Initial system checks on interlocks, wiring and polarity of all the magnets has now started. More than 2000 existing power supplies need to be made operational in the next few weeks. Two of the new main arc dipole power supplies, received this summer, are undergoing system testing prior to connection to the tunnel magnet strings. The rest of the new power supplies are scheduled for delivery by January.

As the beam lines in the tunnel are assembled, the Instrumentation and Controls group has been installing beam diagnostic equipment, hooking it up and starting preliminary check out. These items include beam current monitors, many beam position monitors, harps, viewers and synchrotron light monitors. Many thousands of signals for diagnostics, vacuum monitoring, valve control and other systems must be checked prior to beam operations.

The Fabrication Support group has been busy building and wiring sub-assemblies for all areas of electrical engineering, including BPMs, separator heater control chassis, vacuum system power supplies and cable fabrication. The electrical power installation folks are supporting installation in many areas with cable pulls, AC power installation and magnet hook up.

It looks to be a busy few months ahead as the shutdown comes to a close and the accelerator is prepared for operation after a 16 month pause in beam delivery.

Environment, Safety, Health and Quality

Ladders and Scaffolds
The effort to complete LSD work and prepare the accelerator for beam operations will require work to be done from lifts, scaffolds and ladders. Recently at another DOE lab, an employee did not inspect the hand rail for proper pins and joint connections around the work platform of a powered lift. Later, he leaned against the rail and it gave way, allowing him to fall 16 feet to the floor. He sustained serious injuries.

As we become busy completing important tasks, it's important to remember to keep lift, scaffold and ladder safety in mind at all times. Here's a quick list of checks to make as you approach the next lift, scaffold or ladder for work and at home:

  • Always personally check your ladder, scaffold or lift before use and don't rely on the periodic inspections;
  • Make sure the ladder or scaffold is set up correctly and that you use it for the purpose for which it was designed; and
  • Make sure a ladder or lift is properly rated for your work.

Computing and Networking Infrastructure

CNI Maintenance Period Set for Tuesday, 5-8 p.m.
The CNI group is planning a maintenance period for 5-8 p.m. on Tuesday, Sept. 17. During this time, the central file server for /group, /site, /apps (K:, L:, M:) will be intermittently unavailable during a necessary configuration update. There may also be a 15 minute Internet outage during work on an external router. Updates to Adobe Flash, Shockwave and Acrobat Reader will be pushed out to Windows desktops to fix a security flaw in those products. Finally, patches will be released to all Windows and Linux desktops. Plan on rebooting your Computer Center-managed desktop on Wednesday or Thursday morning to finalize the patch installation. If you have any questions or concerns, contact the IT Helpdesk, x7155.


TIAA-CREF Onsite Individual Counseling Sessions
TIAA-CREF will offer Individual Counseling Sessions, where you can discuss your personal financial situation with a TIAA-CREF consultant on a confidential basis. Consultants will be available to discuss how to help you achieve your financial goals by investing in financial solutions such as mutual funds, brokerage, life insurance and annuities. The sessions will be Wednesday and Thursday, Oct. 23-24, and Thursday, Nov. 21, in Support Service Center Room 21. To schedule an appointment, call TIAA-CREF at (800) 732-8353, Monday through Friday, from 9 a.m.-8 p.m.

Get Fit with Fido!
Want to work out after work but can't because you have to go home and walk the dog? Join the JAG Dog Training Club for a "Get Fit with Fido" class this fall! Class will start on Tuesday, Sept. 17 at 7 p.m. in the Support Services Building lobby and will continue through mid-December, except for the week of the Thanksgiving holiday. The workouts will include cardio, strength, balance and stretching, plus dog obedience and agility activities in an hour of non-stop fitness fun. All fitness levels can participate. Dogs must know some basic obedience commands, including sit, down and stay. One dog per person. For more information, contact JAG Dog Training Club Captain, Joyce Miller, x7163.

TEDF Dedication Ceremony R.S.V.P. Due
Jefferson Lab will conduct a dedication ceremony of the new Technology & Engineering Development Facility (TEDF) on Wednesday, Oct. 16, at 3 p.m. The lab community is invited to attend the event. The program will include short remarks by lab leadership, the Department of Energy and invited officials. Afterward, attendees will be able to take a self-paced walking tour of the new and refurbished facilities. See the invitation and R.S.V.P. for the event online.

Tracking Thomas at Jefferson Lab
Little Thomas is visiting all corners of the Jefferson Lab campus. If you can identify his location this week, email Kandice Carter with your guess. Guesses are accepted through Friday.

Naomi Jarvis correctly guessed the location for Aug. 28. An honorable mention goes to Casey Heck. Check out Tracking Thomas on flickr for a better view of his last location and this week's new mystery photo.

JLab Calendar of Events

Sept. 11: Standard High & Ultra-High Vacuum Seminar
Sept. 23: Safety Shoe vendor onsite
Oct. 3-5: GlueX Collaboration Meeting
Oct. 7: Safety Shoe vendor onsite
Oct. 16: TEDF Dedication Ceremony
Oct. 21-22: QCD Frontier Workshop
Oct. 22-23: Accelerator Readiness Review
Oct. 23-26: APS Division of Nuclear Physics 2013 Fall Meeting

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.