Jefferson Lab Weekly Briefs December 15, 2016

Jefferson Lab Weekly Briefs
December 15, 2016

12 GeV Upgrade

Hall C: With the arrival of the Q3 magnet early this month, all of the major components of the Super High Momentum Spectrometer (SHMS) are now on site.  Two days after it was delivered, Q3 was in its cradle on the spectrometer carriage and the iron yoke had been reassembled around it.  Its fully-installed twin, Q2, which arrived two months earlier, is undergoing power tests at increasing currents.  To date, it has been successfully operated at more than 90 percent of the anticipated operations current.

Visiting staff from the French magnet factory finished splicing the superconducting current leads on the Dipole magnet in Hall C last week.  Jefferson Lab welders are now closing up the cryogenic piping between the magnet cryostat and the service vessel above it.  Clam-shell sections of large helium pipes have been welded in place around the current leads and instrumentation wires.  Over the next several weeks the Dipole magnet will undergo a series of leak and pressure tests as successive layers of pipes and insulation are put in place.

The reconfigured quartz-bar hodoscope is back in place in the SHMS detector stack.  The final SHMS detector, the Noble-Gas Cerenkov Counter (NGC), will be installed as soon as the Dipole magnet work is further advanced.  A test-installation of the NGC was performed recently to verify that it mates correctly with its mounting frame.


Hall A and Hall D
Hall A continues to run the Deeply Virtual Compton Scattering (DVCS) and GMp experiments, and staff and users are looking forward to successfully completing the planned first running of these experiments on Dec. 21. Hall D is receiving 5.5 pass beam in support of the GlueX experiment; It is also scheduled to run through Dec. 21.

Submissions Due by Jan. 27 for JSA Postdoctoral Research Prize
JSA is currently accepting nominations for the JSA Postdoctoral Research Prize, which recognizes and supports the finest postdocs affiliated with Jefferson Lab. The basis for picking the top candidate includes a record of physics accomplishments, a planned high impact JLab physics program, proposed use of the $10,000 research grant, and promise of further accomplishments in Jefferson Lab research fields in the future. All entries must be emailed to Lorelei Chopard by Jan. 27, 2017. For more information, read the memo at:…

L’Oréal-UNESCO For Women in Science Program Applications Due Feb. 3
The L’Oréal-UNESCO For Women in Science program recognizes and rewards the contributions women make in STEM fields and identifies exceptional women researchers committed to serving as role models for younger generations. More than 2,250 women scientists in over 110 countries have been recognized since the program began in 1998. In the U.S., the 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. Applications for the program are now open and are due on Friday, Feb. 3, 2017. The application and more information can be found at the link.

Nominate A Colleague for the 2017 Outstanding Nuclear Physicist Award
JSA is now accepting nominations for the 2017 Outstanding Nuclear Physicist Award, which recognizes individuals who have made outstanding and sustained contributions, including technical achievements, to experimental and/or theoretical research related to the nuclear physics program at Jefferson Lab. The biennial award consists of a certificate and a $10,000 honorarium, presented to the honoree at the Jefferson Lab Annual Users Group meeting. Deadline for submissions is Jan. 31, 2017. See details and poster online.

    Center for Theoretical and Computational Physics

    The isovector charges of the nucleon are key measures of our ability to study the properties of the nucleon from first principles, and are crucial to certain experiments seeking evidence of new theories beyond the Standard Model.  A recent Theory Center paper calculated these charges from first principle using lattice QCD, and showed that one of the main systematic uncertainties in their calculation, namely that due to the contribution of excited states, could be effectively removed through the use of the variational method. The calculation was performed at rather larger-than-physical quark masses, and lays the groundwork for future calculations using lattices generated by the JLab lattice group at physical quark masses that will be able to directly confront experiment.


    The machine shop is presently manufacturing or continuing to manufacture the following:

    •  for the LCLS2 project:
      • Eight cold bellows holders
      • Stiffening Rings for C75 Cryomodule
      • Modifications to the 1.3 GHz Cavity Split Ring
      • Two Press Plates
    • A High Vacuum spring holder for the injector group
    • Six special mini conflats for Hall A's tritium target
    • A weldment adaptor spool for Hall C's 3He platform.
    • Many other small machining jobs for various lab customers.

    Facilities Management and Logistics

    New Energy Conservation Measure Being Implemented; Personal Appliance Prohibition Reminder

    The Jefferson Lab Energy Conservation Policy is designed to provide safe, comfortable conditions and energy efficient operation of heating, cooling and lighting equipment throughout the site. To reduce energy consumption and costs, air handling ventilation fans serving office areas will automatically shut down at 5 p.m. instead of 6 p.m.

    Also, prior to the holiday shutdown period, please remove all personal (not Lab owned) appliances including portable heaters, compact refrigerators, coffee makers, microwave ovens, etc. from the site.  These devices are prohibited at the lab not only because they contribute to increased energy consumption and impact the effectiveness of automated building temperature controls, but can also represent an unsafe fire-hazard concern. During the holiday shutdown period, Lab security will conduct a site-wide survey to assure personal appliances have been removed.

    The full memo is online at:

    The Jefferson Lab Energy Conservation Policy is online at:

    Environment, Safety, Health and Quality

    Everyone with Radiation Worker training at Jefferson Lab: the Radiation Control department has posted the General Access Radiation Work Permit (RWP) for 2017. All trained radiation workers must read and electronically sign the new General Access Radiation Work Permit. If an individual does not complete this training by Dec. 31, 2016, he or she will not have access to the accelerator site until the requirement is completed. If a person hasn’t completed the training by Jan. 6, 2017, their personal dosimeter will be pulled from the dosimeter rack. This year's RWP contains new restrictions/policies, so please read it in its entirety. The document is online at: (click on SAF801kd). Clear your cache from your web browser if you do not see the newest RWP.
    If you have trouble with the link or signing the document, contact Becky Mosbrucker at or 757-269-7236.

    Computing and Networking Infrastructure

    IT Maintenance Scheduled for Tuesday, Dec. 20, 5-7 p.m.
    The IT Division will be conducting a maintenance period on Tuesday, Dec. 20, from 5 – 7 p.m.  During this time, the dovecot servers will be replaced with a newer system and the external secure mail server ( will also be replaced with a newer system.  While the systems are being replaced, these services will be unavailable.  All dovecot and smail services will be available by 7 p.m.  Also, the configuration of the main Zimbra server will be updated to reflect changes needed for the MFA project.
    Zimbra will be unavailable for about 30 minutes starting at 5:30 p.m.  Windows and Linux patches will be deployed to all CUE managed workstations and servers.  Overnight, Tuesday night, Linux and Windows servers may reboot causing short service outages.
    All services will be back up and available by 7 a.m. on Wednesday.  If you have any questions or concerns, please contact the IT Division Helpdesk (, x7155).

    Group (M: drive) Outage Planned for Tuesday, Dec. 27
    In order to finalize the separation of the group (M: drive) file server, there will be an outage on Tuesday, Dec. 27.  Access to the group file server will be restored by noon, but individual systems and services may need to be rebooted to fully restore access.  Some systems and services may not be fully recovered until later in the day. Also, please be aware that group areas reported as containing sensitive data may no longer be available from some systems.  Please see the FAQ at for more information about the group file server separation.  If you have any questions or concerns, please contact the IT Division helpdesk (, x7155)


    Personal Dosimeter Change Out to Begin at 10 a.m. on Tuesday, Dec. 20
    Jefferson Lab's semi-annual personal dosimeter change out will take place starting at 10 a.m. on Tuesday, Dec. 20.  Please put your dosimeter in its place in the personal dosimeter racks no later than 10 a.m. on Dec. 20. This includes the dosimeters of all staff, students, users and subcontractors.
    If you need to use your dosimeter during the change out period on Dec. 20, bring your dosimeter to the Radiation Control area in the ARC Library (1st floor) after 12 p.m. noon that day.
    If you are leaving before then for an extended holiday break, be sure to put your dosimeter in its designated place in the racks before departing. Questions may be directed to Becky Mosbrucker, x7236.

    No Holiday Bake Sale
    The cafeteria will not be holding a holiday bake sale this month.

    TIAA-CREF Individual Counseling Sessions - New 2017 Dates Announced
    TIAA-CREF is offering Individual Counseling Sessions, where you can discuss your personal financial situation with a TIAA-CREF financial consultant on a confidential basis. The consultant will be available at Jefferson Lab on Jan. 12, Feb. 9, March 14 and April 19 in Support Service Center room 22i. To schedule an appointment, call TIAA-CREF at (800) 732-8353, Monday through Friday, 9 a.m.–8 p.m. (ET).

    Subcontracting Officer Technical Representative (SOTR) Training Offered
    Sign up now for Subcontractor Officer Technical Representative Training (GEN020), which will be held on Thursday, Jan. 12, 8 a.m.-12:30 p.m., in a conference room to be determined. Registration can be found in Jefferson Lab's Learning Management System.

    Sentara Mobile Mammography Unit On-Site Jan. 13
    The Sentara Mobile Mammography Unit will be here at Jefferson Lab on Jan. 13, 2017, 8:30 a.m.-3 p.m. It will be stationed in the ARC parking lot. Mammography detects breast cancer, and 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, since personal health insurances will be billed. To make an appointment, call 757-261-5420 and select option 1.

    Jefferson Lab Calendar of Events

    Dec. 23-Jan. 2: Winter holidays and shutdown days - Jefferson Lab closed
    Jan. 13: Mobile Mammography on-site
    Jan. 16: Martin Luther King Jr. Day - JLab closed
    Jan. 18-19: Hall A Collaboration Meeting
    Jan. 20-21: Hall C Collaboration Meeting
    Jan. 23: Safety Shoe Truck on-site
    Jan. 24: Red Cross Blood Drive


    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.