Jefferson Lab Weekly Briefs May 10, 2017

Jefferson Lab Weekly Briefs
May 10, 2017


No Jefferson Lab Published Journal Articles This Week

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

Publications Refresher Course Set for May 18
The next Publications Refresher Course is set for 10:30 a.m. on May 18  in CEBAF Center room F228. If you are new to the lab or are planning to write a journal or proceedings paper, mark your calendar for this 45-minute session that includes a demonstration of the Jefferson Lab Publications Approval System. If you plan to attend, R.S.V.P. to Kim Edwards at

History Archives Project Presents “Photo of the Week”
Take a visual trip to the past and view the Jefferson Lab History Archives Project's Photo of the Week. This week's category is construction.

Last Chance to Apply: DOE Office of Science Graduate Student Research Program
The goal of the Office of Science Graduate Student Research program is to prepare graduate students for science, technology, engineering or mathematics careers critically important to the DOE Office of Science mission. The program provides supplemental funds for graduate awardees to conduct part of their thesis research at a host DOE laboratory in collaboration with a DOE laboratory scientist within a defined award period, typically three months-one year. The application deadline is 5 p.m. on Tuesday, May 16.

Center for Theoretical and Computational Physics

A new Theory Center paper shows that the quasi-parton distribution functions (quasi-PDFs), recently introduced by X. Ji for the extraction of PDFs from the lattice, may be treated as hybrids of PDFs and primordial rest-frame momentum distributions of partons. This results in a complicated convolution structure that requires large momenta to get close to the physical PDF limit. A new approach is proposed based on the concept of "pseudo-PDFs," which are similar to the usual scale-dependent PDFs, with a spatial distance between quark fields serving as a scale parameter.

Jefferson Lab Calendar of Events

May 15: Safety Shoe Vendor on-site
May 15-17: GlueX Collaboration
May 17: JAG Run-A-Round
May 17-19: Software Carpentry Workshop
May 22-26: QCD Evolution 2017
May 29: Memorial Day holiday (Jefferson Lab closed)

Environment, Safety, Health and Quality

Ground Fault Circuit Interrupters
The National Electrical Code approved Ground Fault Circuit Interrupters (GFCI) for use in the 1970s. Since then, according to the Electrical Safety Foundation International, thousands of lives have been saved. The Consumer Product Safety Commission has noticed a sharp decline in electrocutions since the introduction of GFCIs (estimates are up to 50 percent). Make sure you are properly protected against ground faults with the use of GFCIs. Here's how to test a GFCI:

  • Push the GFCI “RESET” button;
  • Plug a nightlight (or similar) into the GFCI;
  • Turn the nightlight ON;
  • Press the GFCI “TEST” button;
  • The nightlight should turn OFF;
  • Push the RESET button again;
  • The nightlight should turn ON; and
  • If the device does not turn ON, try another device. If it still does not work, contact a qualified electrician to inspect the outlet.

GFCI protection is required for outlets installed in many areas, including outdoors and in bathrooms, garages, balconies, decks, porches, kitchen countertops, and laundry areas.

Computing and Networking Infrastructure

IT Maintenance Period Set for Tuesday, May 16, 5-10 p.m.
There will be an IT maintenance period on this upcoming Tuesday, May 16. During maintenance, the MIS systems will be offline while patches are applied and systems rebooted. All MIS applications will be back up and working by 10 p.m. Symantec Antivirus software and the power management software (Verdiem/Surveyor) will be upgraded to the latest version for Windows. In addition, Core Common User Environment software, such as Firefox and Thunderbird, will be updated to the latest version. Linux and Windows patches will also be released to all desktops and servers. Server systems will reboot overnight, which may cause short outages to central services. Plan on rebooting your Linux or Windows desktop no later than Friday, May 19, to finalize patch installation. If you have any questions or concerns about this outage, contact the IT Division Helpdesk at or x7155.


May 17 Run-A-Round: Parking Lot Closures and Runner Registration Deadline
The 32nd Annual Jefferson Lab Run-A-Round will be held 3-6 p.m. on Wednesday, May 17. On that day, for those who need to leave the lab between 3-4 p.m., the parking lots of the EEL Bldg (Bldg. 90), Test Lab (Bldg. 58) and TED (Bldg. 55) and the accelerator site will be the only lots accessible during the race. If you need to leave early, park in one of these lots and depart the lab via Rattley Road to Hogan Drive. Parking for the event will be in the main CEBAF Center lot – adjacent to Hadron Drive. Parking for the Run-A-Round isn’t permitted on Hadron Drive or Rattley Road or in the Residence Facility parking lot. Reminder: reward-eligible runner registration closes at 5 p.m. on May 15. See the full memo for additional information and links.

More Volunteers Needed to Assist with Run-A-Round
Can't Run? Help is needed before, during and after the event to carry out a variety of tasks. Volunteers also receive a free 2017 JLab T-shirt! Sign up early to get your preferred task/time. The runner registration link and the volunteer signup link are both available on the Jefferson Lab Activities Group webpage. If you have any questions about participating or volunteering, contact Stephanie Vermeire at or x6930.

Jefferson Lab in the News: On Hunt for Subatomic Glue
The first published result from the Gluonic Excitations Experiment has garnered coverage in the Daily Press. Click the link to the see the full article.

Rhyme Time: Jefferson Lab’s Best Silly Verse Will Be Featured on Social Media Friday
Jefferson Lab is celebrating National Limerick Day on May 12 by publishing limericks relating to our science and technologies or life at the lab. The top limericks submitted by the lab community will be unveiled on Jefferson Lab’s social media accounts. Check them out on Facebook, G+ and Twitter.

Come See Jefferson Lab's IPAC Posters!
On Thursday and Friday of this week, the posters that will be presented at the International Particle Accelerator Conference that will be held in Copenhagen in mid-May will be displayed in the CEBAF Center atrium. A full poster session will be held on Friday, noon-1 p.m. Come by and see the exciting topics that will be discussed at IPAC '17. If you have any questions or concerns about this event, contact Hari Areti at

JSA Minority/Female Undergraduate Research Assistantship Taking Nominations
Jefferson Lab is seeking nominations of minority or female undergraduate physics students from accredited universities for a research assistantship for the 2017-2018 academic year. The assistantship provides students an opportunity to work on science and engineering projects related to the lab's research. Students must be nominated by a faculty member. The nomination deadline is Wednesday, May 31. This project is supported by the JSA Initiatives Fund program. For eligibility and nomination requirements, see the full posting.

Free Health Screenings Offered by Optima Health
Optima Health is offering free and confidential health screenings at Jefferson Lab on May 31. The 10-minute screenings will take place in CEBAF Center room F113. At this screening, you will learn more about blood pressure, cholesterol, diabetes risk, Body Mass Index, tobacco cessation, and the benefits of regular physical activity. This free service is open to Jefferson Lab employees as well as Users and subcontractors. Walk-ins are welcome, but an appointment is appreciated. The deadline for making an appointment for this free service is Thursday, May 22. To schedule an appointment, contact Occupational Medicine with your preferred appointment times (9 a.m.-1p.m.) at,, or x7539.

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: the Communications Office or contact Kandice Carter at x7263.