Jefferson Lab Weekly Briefs August 4, 2016

Jefferson Lab Weekly Briefs
August 4, 2016

12 GeV Upgrade

Several Super High Momentum Spectrometer user scientists are busy testing and improving the performance of the detectors. The trigger hodoscope detectors, drift chambers and calorimeter are all undergoing checkout. The Quadrupole 2 magnet, still in France, has passed all of its scheduled leak and pressure tests. Assembly of its shipping crate and authorizations from local French authorities for moving from the factory to the seaport are now underway. Hall C is prepared to receive and install Q2 as soon as it arrives. A leak was found in the helium system of the dipole magnet in France during final factory testing. A full diagnosis and repair plan are in development; this will likely delay shipment to Jefferson Lab.


Next Publications Training and Refresher Course Set for Aug. 10
Did you know that Jefferson Lab must submit the final, peer reviewed, accepted manuscripts to the Department of Energy? They will be embargoed both in the laboratory’s publications system and in DOE's Pages for one year before being released to the public. Visit DOE Pages and read "Guidance for DOE-Funded Authors" for more details about the DOE Public Access Plan and how it affects Jefferson Lab authors. You can learn about this and other requirements in the next Publications Training and Refresher course on Wednesday, Aug. 10, at 10:30 a.m. in CEBAF Center room F224-225. If you plan to attend, R.S.V.P. to Kim Edwards at by Aug. 9.

Pick Up a Free Book or Magazine!
Information Resources has added new library books to the free book cart. Remaining books will be disposed on Sept. 1. See the list here. The library is also offering a selection of older (2005-2015) copies of scientific journals and science-related periodicals on a first-come, first-served basis through the end of August. If interested, stop by, take a look, and feel free to take what you want. A list of the available titles is published online.


The Machine Shop is presently manufacturing or continuing to manufacture the following items:

  • Twenty 50 Ohm Stripline beam position monitors and two additional 50 Ohm Zero LG BPMs are in the process of being being welded;
  • Injector positron 100 KeV and 5 KeV Faraday cup assemblies are in process;
  • A niobium retort for Nb3Sn system for CEBAF’s five-cell cavity is in process for SRF;
  • The A1n target system ladder is being modified for Hall C;
  • The Q1BR Short Orbit Spectrometer vacuum tube large end weldment is being assembled for Hall A;
  • A Niowave CERN cavity rework for final E-beam assembly is being welded for SRF; and
  • The High Momentum Spectrometer wire chamber assembly is being manufactured for Hall C.

Jefferson Lab Calendar of Events

Aug. 5: Summer Interns Poster Session
Aug. 11: Jefferson Lab Employee Tour
Aug. 15: Safety Shoe Truck on-site
Aug. 16: American Red Cross Blood Drive
Sept. 5: Labor Day holiday; Jefferson Lab closed

2016 Summer Physics, Science Education, Enrichment Programs at JLab
May 30-Aug. 5: SULI/REU summer undergraduate internships
June 27-Aug. 5: High School Summer Honors Program internships
Aug. 5: Summer interns poster session
Aug. 8-12: Physical Science Investigation Teacher Program
Aug. 15-19: Science Camp for Deaf and Hard of Hearing Youth

Environment, Health, Safety and Quality

Lock, Tag and Try
The Lock, Tag and Try method is the approved method for securing hazardous energy sources in order to provide personal protection while performing maintenance and service work. Here are some quick reminders regarding the method from Jefferson Lab’s LTT program:

  • Wear appropriate PPE (as required);
  • Multiple energy sources require a written procedure;
  • Each worker must apply/remove his or her own lock and tag;
  • Interlocks and selectors or on-off switches are not energy isolation devices;
  • Create an expectation of compliance; and
  • Taken action before exposure.

For more information on Jefferson Lab’s LTT policy and procedure, refer to ES&H Manual Chapter 6110 Lock, Tag, Try (LTT) Program.


Tornado Warning Siren Test Set for 10:30 a.m. on Friday, Aug. 5
Jefferson Lab's tornado warning siren will undergo its monthly operational test at 10:30 a.m. on Friday, Aug. 5. Don't respond to the siren; this is a test of the siren system and not a personnel response exercise. Individuals planning to be in the Central Materials Storage Area (where the siren is located) while the test is taking place must have with them and wear two layers of hearing protection.

Mentors Needed for Governor's School Students
Apparently, the word has gotten out about what great mentors we have at Jefferson Lab, because there are a lot of applications for mentorships for the next school year! The students will be in their senior year of high school and are enrolled in the local Governor's School for Science and Technology. The requirements for mentors are to provide a project that can be completed in an academic school year with the student working five hours a week/35 hours a quarter (nine weeks). The mentorship culminates with a formal presentation of the project by the student in both written and oral forms, with the oral presentation given in a symposium format before a judging panel of local professionals. If you are interested in serving as a mentor or if you have any questions, contact Brita R. Hampton at by Wednesday, Aug. 17.

Department of Energy Sponsors Food Drive
The Department of Energy is again participating in the "Feds Feed Families" food drive this year. The Thomas Jefferson Site Office (TJSO) will be collecting donations from its federal employees to benefit the Foodbank of the Virginia Peninsula. There is no expectation of Jefferson Lab employee participation in this program, although anyone wishing to contribute may do so. Marked donation boxes for non-perishable food items will be located in the CEBAF Center lobby Aug. 1-19. For more information, see the memo.

Reminder: JSA Initiatives Fund Program Proposals Due Aug. 8
JSA is soliciting proposals for Initiatives Fund support for the FY17 program. Members of the Jefferson Lab user community, Jefferson Lab researchers and staff, other individuals or groups who can make unique contributions to the lab's research, development, education and technology transfer missions. The Initiatives Fund is provided by the JSA owners, SURA and PAE. Proposals are due Aug. 8. For full application information and details, see the full announcement.

Jefferson Lab Employee Tour Set for Thursday, Aug. 11
Have you ever wanted to see the experimental halls and the accelerator tunnel, but have not had the opportunity to do so? Jefferson Lab employees, users, students and contractors will have that opportunity on Thursday, Aug. 11, 1-3:30 p.m. The tour will include stops at the Test Lab, the Machine Control Center, the CEBAF Accelerator tunnel, and Experimental Halls C and D. The visit to each facility will be guided by subject-matter experts. Photos may be taken. Space is limited and your supervisor's approval and advance registration is required. Deadline to sign up is Aug. 8. For signup instructions and more information, contact Mike Robbins, x7617.

Red Cross Blood Drive Scheduled for Tuesday, Aug. 16
The next American Red Cross Blood Drive will take place Tuesday, Aug. 16, 10 a.m.-4 p.m. in CEBAF Center room F113. All participation is appreciated as the Red Cross has a significant blood shortage. To schedule an appointment, visit and enter Sponsor Code: TJNAF. You can also schedule an appointment by contacting Johnie Banks at or x7539. Visit the website for donation eligibility requirements.

Reminder: Hall C Safety Awareness Training Updated
Due to the new configuration of Hall C, the Safety Awareness Training for the hall, SAF112, has been updated. This training will expire on Sept. 1 for anyone who last completed this training before May 1, 2016. To take the updated training, first read the document. Then, sign up for a walk-through, which is conducted on Tuesdays at 2 p.m., by contacting Joe Beaufait at x7131 or

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.