Jefferson Lab Weekly Briefs October 29, 2014

Jefferson Lab Weekly Briefs
October 29, 2014

12 GeV Upgrade

The stacking of the lead-glass shower counter for the Hall C Super High Momentum Spectrometer into its final position within the shielding has begun. Each layer of counters is being tested with cosmic rays as they are installed, prior to installing the subsequent layer. The mirror blanks for the noble-gas Cherenkov counter have arrived at CERN, where they will be aluminized and coated. The gas vessel for the noble-gas Cherenkov is being constructed and should be ready for the mirrors prior to their return. Work on services for the SHMS platform continues, with recent emphasis on completing wiring and power cabling, preparing position readback, checking out the new magnet power supplies, and routing in the low-conductivity water.


Jefferson Lab Published Journal Articles Oct. 20 - 24

  • Bastani Nejad, M. et al. "Improving the performance of stainless-steel DC high voltage photoelectron gun cathode electrodes via gas conditioning with helium or krypton." Nucl. Instrum. Meth. A 762, 135 (2014).

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

Center for Theoretical and Computational Physics

Lattice QCD is a computational method for determining the physical consequences of continuum Quantum Chromodynamics (QCD). A new review article discusses the sources of numerical uncertainties inherent to this approach and shows how they can be controlled in order to obtain the universal predictions of QCD. Lattice QCD therefore holds the promise of uncovering the properties of matter under extreme conditions, nuclear forces, the structure of nuclei, and the spectrum and structure of hadrons.

Facilities Management & Logistics

Notification Required When Lab Vehicles or Equipment are Damaged

Jefferson Lab's vehicle control officer and ESH&Q staff remind everyone that the person operating a JSA/Jefferson Lab or government vehicle or piece of equipment is responsible for reporting any mishap a vehicle is in and when lab equipment is damaged in any way. The mishap or damage must be reported, as soon as safely possible, to your supervisor, division safety officer and either to Kris Burrows, Jefferson Lab vehicle control officer, or Manny Nevarez, deputy vehicle control officer. If the mishap or damage takes place after hours – on lab property or off – the vehicle operator may contact Jefferson Lab Security, 757-269-5822, in place of Burrows or Nevarez. The Jefferson Lab Security force may be contacted among the first line of notification at any time.

Failure to promptly report an accident or damage could have serious consequences. A damaged vehicle could be unsafe for subsequent use or a damaged component could fail while the vehicle is in use. It can also delay the required accident investigation and report required by the Department of Energy and the Government Services Administration. The responsibilities and procedures for using a Lab or leased, fleet vehicle are explained in the Vehicle and Motor Equipment Policy and Procedures manual. Section 10 of the manual explains reporting vehicle accidents and/or damage.

You can see the full memo online.

Reminder: Personal Appliance Use at Jefferson Lab
Jefferson Lab’s Energy Conservation Policy is designed to provide efficient operation of building heating and cooling systems and other energy-consuming equipment (e.g., lighting, PCs, printers, etc). Further, the policy considers the delivery of adequate comfort conditions and work space safety. Subsequently, the lab’s energy policy prohibits the use of personal electrical appliances in lab buildings and spaces, including portable heaters, refrigerators, fans, coffee makers, microwave ovens, etc. (This doesn’t include authorized appliances in common-use areas, such as kitchenettes.)

For your reference, a copy of the Jefferson Lab Energy Conservation Policy is available under the “Sustainability” tab.

Advise Jefferson Lab’s Sustainability Manager, Bill Mooney, x5461, regarding any special circumstance requests for personal appliance use (e.g., inadequate common refrigerated food storage space) or other questions or clarifications. Your attention to these matters helps Jefferson Lab maintain the safest and most efficient work environments possible.

You can see the full memo online.

Environment, Safety, Health and Quality

Keep Halloween Safe
This Friday, most of us can expect a crowd of little ghouls or goblins on our streets in celebration of Halloween. Remember to be extra vigilant as you drive, walk or bike home on Friday, to help keep children safe.

Some local municipalities have established trick-or-treat times, while others allow the festivities to begin at dusk. You can find a list of established times for local areas here. Be aware that trick-or-treating in all local areas concludes at 8 p.m., and only children aged 12 or under may participate. If you have children of your own who plan to trick-or-treat this year, check out these safety guidelines from the Centers for Disease Control.

Computing and Networking Infrastructure

Brief Internet Outage Set for Thursday, Nov. 6
There will be a brief interruption in the lab's internet connection Thursday, Nov. 6, at 5:30 p.m. The total outage time is expected to be no more than 10 minutes. This outage is being scheduled to accommodate equipment upgrades. If you have any questions or concerns about this outage, contact the IT Division Helpdesk at x7155 or


Thanksgiving Buffet in the Quark Café
The annual Quark Cafe Thanksgiving Feast is set for Thursday, Nov. 6, 11:30 a.m.-1:30 p.m. This year's buffet will feature roast turkey with cornbread sage dressing, gravy, fresh orange-cranberry sauce, wild mushroom ravioli in a Boursin® cream sauce, carved peppercorn-crusted tenderloin of beef, Yukon gold garlic mashed potatoes, sweet potato casserole, green beans almondine, maple-walnut Brussels sprouts, dinner rolls and assorted pies. The buffet is $10.13 (plus tax) and includes a medium fountain drink. Buffet items will be available for a la carte purchase.
Order Thanksgiving Desserts from Quark Café

The café will start accepting holiday dessert orders on Thursday, Nov. 6, during breakfast, lunch and Wednesday snack hours. The café is offering a selection of whole pies, including pumpkin, southern pecan, french silk and fruits of the forest. Pumpkin cheesecake is also available. Orders will be accepted through Friday, Nov. 21. Pre-ordered desserts will be available for pickup on Tuesday, Nov. 25, 11:30 a.m.-2 p.m. and Wednesday, Nov. 26, 8 a.m.-1:30 p.m. Pick up your order form and get more information in the Quark Café.

Red Cross Blood Drive Scheduled for Oct. 31
The next American Red Cross Blood Drive will take place Friday, Oct. 31, 10 a.m.-4 p.m. in CEBAF Center room F113. New and repeat donors are encouraged to attend. All those who donate will be entered into a drawing for prizes from the American Red Cross. To schedule an appointment, visit and enter Sponsor Code: TJNAF.  You can also contact Johnie Banks, or x7539. Visit the website for donation eligibility requirements.

Share Your Photo for Veteran’s Day Tribute
Jefferson Lab will again recognize its veterans on Veterans Day, Nov. 11 with a small display. This year, a photo exhibit of lab veterans in uniform is being prepared to highlight employees’ service. If you are a veteran and would like to participate, email or bring in your military service photo to Mike Robbins, CEBAF Center room C222 before Oct. 31. These photos can be of any time during your service, from boot camp to retirement. Under the photo, your name, branch of service, and years of service will be displayed.

Jefferson Lab Calendar of Events

Oct. 31: American Red Cross Blood Drive
Nov. 2: Daylight Saving Time ends
Nov. 3: United Way campaign ends
Nov. 12: Colloquium
Nov. 12-15: CLAS Collaboration meeting
Nov. 18-20: Future Directions in Spectroscopy Analysis
Nov. 27-28: Thanksgiving, 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.