Jefferson Lab Weekly Briefs September 18, 2013

Jefferson Lab Weekly Briefs
September 18, 2013

12 GeV Upgrade

Hall B Update: The sixth and last sector of the PreShower Calorimeter for CLAS12 is assembled and has been tested extensively with cosmic rays. Members of the Old Dominion University group are readying the last Region 2 drift chamber for shipment to Jefferson Lab and also are steadily installing high voltage and readout electronics cards on other completed chambers stored at Jefferson Lab. The fifth and sixth (i.e. last) Region 1 chambers have been strung at Idaho State University and are now undergoing tension testing of all wires. The fifth Region 3 chamber is nearing the end of wire stringing at JLab. The first production module of the Silicon Vertex Tracker (SVT) barrel has been assembled and fully tested at Fermilab and passed with flying colors, and the second module’s sensors are being attached to the next substrate. Series production of the SVT modules is thus underway at Fermilab.

The machined parts for the containment vessel for the High Threshold Cerenkov Counter (HTCC) have arrived and been assembled, and the carbon-fiber entry dish and related parts are nearing completion. The mirror assembly jig for the full main mirror for HTCC is also ready. All the Forward Time-of-Flight (TOF) 1-b slats built at the University of South Carolina have been mounted to their support arrays and are undergoing system tests as a group in a rack using cosmic rays. The second set of arrays of existing TOF slat arrays from CLAS has been refurbished, and the mirror refurbishment has been started for the existing Cerenkov Counter.

The first prototype double-pancake winding for the Torus magnet prototype coil is complete at Fermilab and is being readied for epoxy potting. Major parts orders for the Torus are being issued, with the first coil cases having just arrived at Fermilab. The first fixtures for the Torus cryostat factory are assembled and being readied for use. The design revisions from the vendor have arrived for the intermediate design review for the Solenoid magnet, with work continuing on thermal and structural analysis at Jefferson Lab and in collaboration with Brookhaven National Lab. Soldering of the superconducting cable to the copper stabilizer for these two magnets has reached the seventh reel for the Torus and will be shifted over to that for the Solenoid once a buffing operation to prepare the copper surfaces for epoxy bonding is completed for the Torus.


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.

Center for Theoretical and Computational Physics

Researchers at Jefferson Lab and Trinity College Dublin have reported an extraction of an excited state spectrum of isoscalar mesons using lattice QCD. Calculations on several lattice volumes were performed with a range of pion masses from around 700 MeV down to 400 MeV. The predictions for the mass spectrum of isoscalar mesons from first principle QCD calculations will provide useful guides for future experiments at Jefferson Lab.

Environment, Safety, Health and Quality

Vision in the Dark
Driving and/or working during the non-daylight hours can be a challenge. In true nighttime, the human eye does not perceive colors or does so very poorly. Many people over the age of about 55 begin to lose their night-vision ability. And by their mid- to late-60s, many people can lose up to half their night vision. These changes can often times be so slow and subtle that individuals fail to realize this change in their vision.
This means driving at night, especially in low-light areas becomes more difficult. Drivers will often have trouble seeing addresses, road hazards or even vehicles and pedestrians. And pedestrians wearing dark clothing are even more difficult to see. Working in dark or low-light work spaces with this reduced vision may lead to more errors, improper assembly, and missed connections or misalignment.

We are all attuned for energy conservation both at home and at work, but we must not sacrifice safety for the sake of fractions of a penny in lighting costs. The cost of errors in equipment assembly or use, often exceed thousands of dollars or cause human suffering. Use what lighting you need to safely do your job without wasting energy.


JLab-wide Phone Outage: Saturday, Sept. 21
Jefferson Lab’s landline telephone system will be down Saturday, Sept. 21, from 8 a.m.- 12 p.m. noon. The outage will permit equipment upgrades.

Across Jefferson Lab, the outage will disrupt:
• Landline telephone services
• Voicemail
• Fax machines

This outage will affect Jefferson Lab and university phones in the ARC, but not the commercial tenants in the ARC.

To Get Help and Report Emergencies During the Outage:
- Use a cell phone to call 911.
- After you are advised to hang up by the 911 Dispatch Operator, immediately call the Jefferson Lab Security cell phone at 757-342-9868. Advise Security of the 911 call, the nature of the emergency and the location of the emergency.
- Or activate the closest fire alarm box if no cell phone or coverage to alert Security of your issue. (Security will send an officer to investigate; however response times will vary.) And if or when possible, follow up with a call to the Security cell at 757-342-9868 to advise them of the situation.

Inquiries during the outage can be made to Jefferson Lab Security’s cell at 757-342-9868.

For more information regarding this outage, contact the IT Division Helpdesk at

For further information regarding Emergency Response steps to take during this phone service outage, contact Emergency Manager Tina Menefee, at or call 757-768-4030.

2013 Fall Golf Outing to be Oct. 18; Register by Oct. 11
It's time for the Jefferson Lab 2013 Fall Golf Outing, says event co-planner Mike Zarecky, Experimental Nuclear Physics Division. This year's event will be held on Friday, Oct. 18, at the Golden Horseshoe Golf Club (Green Course) in Williamsburg, Va. The tourney will kick off at 12 p.m. with a shotgun start. The format will be a handicapped Captain's Choice. Each team of four must include at least two Jefferson Lab employees. The cost for Jefferson Lab employees (you qualify if you receive a paycheck from JSA - Jefferson Science Associates, LLC) is $60. The cost for non-lab employees is $75. The fee includes range balls, green fees, cart, food after the tournament and the prize fund.

More information and directions to the course are available on the JAG webpage at:

To register for the tourney, see Mike Zarecky, in the TED, Bldg. 55, cube 2500-19, no later than Friday, Oct. 11. When signing up, you must list your average score for 18 holes. Please make checks payable to Mike Zarecky. If you have questions, contact Danny Machie, Engineering Division, ext. 7501 or Zarecky, ext. 7609.

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.

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.

Tracking Thomas at Jefferson Lab
Little Thomas is taking a break to enjoy the great weather this week. He will return next week. The location of the Sept. 11 photo and correct responses will be posted in the Sept. 25 Weekly Briefs

JLab Calendar of Events

Sept. 23: Safety Shoe vendor onsite
Oct. 3-5: GlueX Collaboration Meeting
Oct. 7: Safety Shoe vendor onsite      
Oct. 16: TEDF Dedication Ceremony
Oct. 18: JAG Fall Golf outing
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.