Jefferson Lab Weekly Briefs December 10, 2015

Jefferson Lab Weekly Briefs
December 10, 2015

12 GeV Upgrade

Late last month, the new spectrometer in Hall C was rotated to its maximum angle relative to the electron beam for the first time. This is a triumph for those who designed, surveyed and installed the Super High Momentum Spectrometer, since it must come very close to the curved wall of Hall C. After Jefferson Lab staff removed or relocated a final few items from the wall, the SHMS was rotated to a scattering angle of 40.2 degrees. The design specification calls for reaching at least 40 degrees.

A leak that was previously reported in Q2, one of three SHMS magnets under construction in France, was found to be in the leak-test equipment, not in the magnet. The Q3 magnet coil is inside its helium vessel awaiting further electrical tests before the vessel is permanently welded closed. The vendor continues to lose time due to problems with manufacturing the liquid-nitrogen-cooled thermal shields. Most of the shield pieces are now ready, but fabrication of the inner shield for the dipole remains to be done, as does the final testing of the shields for all three magnets. The outer-most part of each magnet is its vacuum vessel, and good progress is being made on all three of these.

The closure welding is complete on the vacuum jackets of the hex beams connecting the six coils of the CLAS12 Torus magnet that is being assembled in Hall B. Next steps include a detailed survey, followed by transferring the weight of the magnet to the main support legs. The major work in January and February will include installing the cryogenics service tower for the Torus and connecting it to the distribution can for cryogens. The distribution can fabrication is on track for delivery in January. The fabrication of the Torus Service Tower is in its final assembly stage. The Torus and Solenoid magnet power supplies have completed full current tests. Installation of the control cable harnesses and needed firmware is progressing. The vendor for the CLAS12 Solenoid is preparing for epoxy impregnation of both of the “Intermediate” coils. The bobbin for the fifth coil, or “Shield” coil, is expected to be delivered to the Solenoid vendor by mid-December, with the Shield coil to be wound and then epoxy-impregnated by late January.


Jefferson Lab Published Journal Articles, Nov. 30-Dec. 4

  • J. Benesch, G. B. Franklin, B. P. Quinn, and K. D. Paschke. "Simple modification of Compton polarimeter to redirect synchrotron radiation." Phys. Rev. ST Accel. Beams 18, 112401.
  • Tech Note: A. Bogacz. "Choice of multi-pass optics for CEBAF-ER." JLAB-TN-15-050.

Remember to submit your papers for approval to the Jefferson Lab Publications database.

Publications Refresher Course Offered Jan. 12, 2016
The next Publications Training and Refresher course will be held on Tuesday, Jan. 12, 2016, at 9 a.m. in CEBAF Center room F224-225. In this session, authors will learn how to submit manuscripts to the Publications Review and Approval System, how to make recommended revisions to papers during the signature process, and how to add the relevant information once the paper is published. If you would like to attend, R.S.V.P. to Kim Edwards by Friday, Jan. 8.

JSA Thesis Prize Call for Nominations
Theses completed during calendar year 2015 are eligible for the 2015 JSA Thesis Prize, as well as theses completed during the last quarter of 2014 (if they haven't been submitted before). The thesis prize submissions will be judged initially by members of UGBoD, followed by a panel of independent experts to select the final winner. Criteria for evaluation include quality of the written thesis, contribution of the student to the work, and contribution to Jefferson Lab physics/community. This project is supported by the JSA Initiatives Fund Program, a commitment from the JSA owners, SURA and PAE Applied Technologies. Initiatives Funds support programs, initiatives, and activities that further the scientific outreach, promote the science, education and technology of the Jefferson lab and benefit the lab's extended user community in ways that complement the Lab's basic and applied research missions. The nomination deadline is Feb. 15. For nomination package details and submission instructions, see the webpage linked above.

JSA Postdoctoral Research Prize Call for Nominations
Nominations for the JSA Postdoctoral Research Prize are now being accepted. Nominated scientists will be judged on his/her record of accomplishment in physics, a planned high-impact Jefferson Lab physics program, proposed use of the research grant, and promise of further accomplishments in the Jefferson Lab research fields in the future. The prize will be in the form of a research grant. The funds can be used for travel, supplies or equipment in support of the proposed research plan. This project is supported by the JSA Initiatives Fund Program. The deadline for nomination packages is Jan. 22. For nomination package details and submission instructions, see the webpage.

AIP Congressional Science Fellowship Program Now Accepting Applications
The American Institute of Physics, in partnership with the Acoustical Society of America, annually sponsors one scientist to spend a year providing analytical expertise and scientific advice to Congress. The program enables scientists to broaden their experience through direct involvement with the legislative and policy processes. Fellowships are for one year, usually September through August. Following orientation, Fellows interview with congressional and committee offices to find a placement where they wish to serve. Fellows are expected to be capable of handling varied assignments, both technical and non-technical. During their term, Fellows are expected to work full-time at their assignment. Applications are due Jan. 15. More information and application materials can be found on the AIP website.

2016 L’Oréal USA For Women in Science Fellowship Program Now Accepting Applications
The 2016 L’Oréal USA For Women in Science fellowship program is now accepting applications. In the U.S., the For Women In Science fellowship program awards five postdoctoral women scientists annually with grants of $60,000 each. Applicants are selected from a variety of fields, including the life and physical/material sciences, technology (including computer science), engineering and mathematics. The application and more information about the L’Oréal USA For Women in Science program can be found at Applications are due Friday, Feb. 5.


The Machine Shop has been working on the following projects:

  • 12 QJ-style quadrupole magnet assemblies;
  • For Hall A, the Super BigBite Spectrometer conical vacuum chamber, which includes the required shielding;
  • The Diffuser drive lever assembly for Hall A;
  • Two beam dump viewer body assemblies for Hall A; and
  • For Hall C, an isolation wall assembly.

Additional work continues for multiple lab customers.


Computing and Networking Infrastructure

IT Maintenance Day Set for Tuesday, Dec. 15, 5-10 p.m.
The IT Division is planning a maintenance period for 5-10 p.m. on Tuesday, Dec. 15. During this maintenance period, all MIS applications will be unavailable while patches are installed and the systems are rebooted. All MIS applications should be back up and available by 10 p.m. Also, all Common User Environment-managed web severs and login servers will be rebooted to finalize patch installations. A short incoming email outage will also occur while the email servers are updated. This email outage will be short and will last no more than 15 minutes. All incoming email will be queued on remote servers and delivered when service is restored. Finally, Windows and Linux patches will be released to all CUE desktops. Plan on rebooting your desktop to finalize patch installation no later than Dec. 18. If you have any questions or concerns, contact the IT Division Helpdesk at or x7155.

BlueJeans Videoconferencing Service Restored
The BlueJeans videoconferencing system is now back online and operating normally. As a reminder, if you have any questions or concerns regarding videoconferencing, contact the IT Division Helpdesk at x7155 or


On-Site Safety Shoe Vendor to Change
Procurement staff is working to engage a new safety shoe vendor to provide safety shoes on-site, since the lab’s former vendor can no longer provide this service. If you need information on purchasing safety shoes for work at Jefferson Lab, contact Renee Carter, x7954 or

Mobile Mammography Unit to Visit Jefferson Lab
The Sentara Mobile Mammography Unit will be here at Jefferson Lab on Jan. 8, 9 a.m.-3 p.m. The American Cancer Society recommends that women with an average risk of breast cancer should undergo regular screening mammography starting at age 45. It only takes 15 minutes! This service is open to all employees as well as their family members or friends, as personal health insurances will be billed. To make an appointment, visit the Sentara website or call 1-800-SENTARA (1-800-736-8272).

Jefferson Lab Travel Card Fraud Alerts Offered
U.S. Bank cardholders can elect to receive a real-time fraud alert via SMS text and/or email when suspicious activity has been detected on their Jefferson Lab Travel Credit Card. For more information, contact Carol Kinsey at

TIAA-CREF 401(k) GSRA Open Enrollment Ends Dec. 17
The 401(k) Group Supplemental Retirement Annuity (GSRA) Open Enrollment for Calendar Year 2016 will be offered through Dec. 17. All elections will be reflected in the Jan. 15, 2016, paycheck. If you wish to contribute more or less than the 5 percent default contribution, or opt-out of this program, you must enter your preferences in the on-line system no later than 5 p.m. on Dec. 17. If you do not enter your preferences in the on-line system prior to 5 p.m. on Thursday, Dec. 17, you will automatically be enrolled in the default employee 5 percent contribution plan that is based on your current salary. If you have any questions about open enrollment, contact Treva Ferguson at x7291. For more information and a link to the on-line system, see the full, all-staff memo.

Opportunity to Update Your Form W-4
If you have had a change in circumstances, such as marriage or divorce, birth of a child, loss of a dependent, or change in exempt status, since you last filed a Form W-4, Employee’s Withholding Allowance Certificate, you may want to file a new Form W-4. See more information in the linked all-staff memo.

Holiday Party for Jefferson Lab Children and the Young at Heart
The JAG Holiday Party is scheduled for Saturday, Dec. 12, 10 a.m.-1 p.m. in the CEBAF Center lobby. All employees, contractors, users and their children are invited. Families are encouraged to bring a new, unopened toy to be donated to a local charity. Get your picture taken with Santa Claus, who plans to drop by with the snow dogs, Nikko and Tally. (Owners Dan and Kim Young are members of the JAG Dog Training Club, and Nikko and Tally are trained service dogs). Come and enjoy holiday-themed games, crafts and light snacks. All children must be accompanied by an adult. See the full, all-staff memo for more information.

Volunteers Needed for JAG Holiday Party on Saturday, Dec. 12
Volunteers are needed to help with the JAG Holiday Party as Craft-Table Monitors, Bounce House Attendants, Game Helpers, Snack Area Elves and Santa's Helpers. Adults and older children planning to attend the party are asked to consider signing up to help for one hour during the party. Sign up online today.

Toys for Wes' Wish
This year, Jefferson Lab will participate in the Wes’ Wish 2015: Piles of Smiles for a Child with Cancer Toy Drive to benefit Children's Hospital of the King's Daughters (CHKD). Collection boxes are available near the main entrances of CEBAF Center, MCC, SSC, ARC and TED Buildings. JAG is accepting new, unwrapped toy donations (stuffed animals are not accepted) for children 0-19 years old. The toy donations will be delivered to the Children’s Hospital of the King’s Daughters pediatric oncology patients on Dec. 14. See more information on the JAG website.

Celebrate the Holidays with Your Creative Decorations
The JAG is sponsoring a Holiday Office Door/Cubicle Decorating Contest. Prizes will be awarded to Best Decorated, Most Original and Silliest. All employees, users and contractors with an office or cubicle may enter the contest (individuals or groups). Judging will take place Friday, Dec. 18. Winning entries will be announced Monday, Dec. 21. Decorating materials must be fire resistant and only UL-approved lighting/electronics may be used. No unwrapped food items are allowed. To enter, email JAG Chair Mary Jo Bailey at by COB Dec. 16. Include your name(s), building number, office/cube location and a contact number. Visit the link for more detailed information.

Jefferson Lab Calendar of Events

Dec. 12: JAG Holiday Party
Dec. 15: JSA Science Council meeting
Dec. 16: Holiday Office Door/Cubicle Decorating Contest entry deadline
Dec. 17: JSA Board of Directors meeting
Dec. 24-Jan. 1: Holidays and Shutdown Days, Jefferson Lab closed


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.