Jefferson Lab Weekly Briefs
August 1, 2012

12 GeV Upgrade

There are now four operational 12 GeV cryomodules plus associated new radiofrequency zones installed in CEBAF. In-tunnel checkout of the fourth cryomodule (C100-4) has been completed, and it was operated at 106 Megavolts. Assembly of the remaining six C100 cryomodules has resumed in the new work area in the Test Lab Addition. The vendors for the major components of the new refrigerator, the Central Helium Liquefier-2, continue their on-site installation work. Excellent progress is being made on the rework of the beamlines, including completion of nearly 50 percent of the total required machining on the re-used dipole magnets.

Physics

Q-weak removal is continuing in Hall C. The main detector bunker, shield wall and Ferris wheel (main detector support structure) have been removed from the hall. Two of the three lead acceptance-defining collimators have been dismounted, and work continues on the region I collimator and hardware. The Engineering Division is removing the beamline upstream of the Q-weak target, a prerequisite to the eventual removal of the Short Orbit Spectrometer.

Long Shutdown

Installation, removal and alignment work is continuing in the CEBAF tunnel and halls, including the removal of the beamline to Hall C, a non-trivial task given the height and complexity of the system. A lot of attention has been given this week to the preparation for the Central Helium Liquefier warm-up, scheduled to start today. A complete and controlled warm-up of the CHL-1 and the Linacs is a first in the history of the lab and a critical step towards the upgrade to 12 GeV. The equipment needed for the demolition of the large wall in the Test Lab is on site, and work should start this week.

Free-Electron Laser

The FEL team completed the DarkLight beam tests early last the week. Until today, the team has provided time for some beam studies of halo, for Terahertz measurements and for alternative transport setups.

Center for Theoretical and Computational Physics

To see if the BFKL pomeron is relevant for existing or future deep-inelastic scattering accelerators, such as the Electron-Ion Collider (EIC) or the Large Hadron-electron Collider (LHeC), one needs to know how large are the next-to-leading order (NLO) corrections to the pomeron intercept and pomeron residue (the so-called "impact factor"). In a new paper, Theory Center staff confirmed the NLO intercept of the pomeron and obtained for the first time the NLO impact factor for the photon. The result is represented as an NLO transverse momentum factorization formula.

Facilities Management and Logistics

Electronic Forms Now Available for Property Storage Requests
The Property Office now has a new, interactive storage request form and database available. The link for the new form and database is located on the Property homepage, in the left-hand menu under Property Forms, titled Property Storage Request. Included in this new form is the ability for the end user to search the database for their storage items and request a withdrawal of items. The office requests that you discontinue use of the paper form and use the new electronic form. If you have questions, contact the Property Office at x6270.

JLab Calendar of Events

Aug. 3: JLab 2012 Summer Interns Poster Session
Aug. 6: Safety Shoe vendor onsite
Aug. 6-10: 7th International Workshop on Chiral Dynamics
Aug. 20: Safety Shoe vendor onsite
Aug. 21: American Red Cross Blood Drive
Aug. 22: Colloquium and Public Lecture
Aug. 27-28: Zimbra Training Sessions Offered
Sept. 3: Labor Day holiday, JLab closed
 

Environment, Safety, Health and Quality

Temporary Worker Training
Now that we have begun the Long Shutdown and with the impending arrival of short-term “student” workers, it is a good time to review what orientation or training a worker may need for specific tasks. While experienced JLab employees may not need a full orientation to JLab programs and practices, both experienced workers and student workers alike may benefit from training for specific job tasks that may be different from a typical workday. Here are some questions to think about when determining if additional, specific training or orientation may be needed:

  • Are workers fully informed of the planned tasks and others' expectations of them?
  • Is department or job-specific jargon being used that may lead to confusion?
  • Are workers aware of other tasks that may be occurring nearby in shared spaces, and are they positioned so that moving equipment is not in the same space? 
  • Have the workers been familiarized with the layout/safety protocols of unfamiliar spaces?
  • If needed, are workers prepared to stop the work safely and/or summon assistance quickly?

Every worker should be looking out for their fellow workers' safety, especially of those who are undertaking tasks that they don't perform on a regular basis. Sharing experiences, noting proper protocols and conducting a task-hazard analysis beforehand are all good practices that will help a job run smoothly and prevent injuries.

Computing and Networking Infrastructure

Zimbra Training Offered in August
Current plans call for the lab to begin using the Zimbra calendar as the official calendar system beginning the week after Labor day. The current Oracle Calendar system will be shut down prior to the cut over, and all meetings will be migrated into Zimbra. To smooth the transition to the new system, the CNI group will be offering several training seminars on the use of the Zimbra calendar and email system on Monday, Aug. 27 and Tuesday, Aug. 28. Additional information will be coming, but plan now to attend one of these important seminars.

Announcements

JSA Initiatives Fund Proposal Deadline is Friday
Proposals for support from the 2013 JSA Initiatives Fund program are due Aug. 3. Proposals with JLab principal investigators will be forwarded to Bob McKeown for the first round of review. Proposals with User PI's will be forwarded to Sebastian Kuhn for the first round of review. Details on the full application process can be found on the JSA website.

2012 JLab T-Shirts Back by Popular Demand - Preorder by Aug. 9
JAG is ordering one more round of apparel items featuring this year’s winning T-shirt design, which was unveiled at the Run-A-Round. The design will be available on short sleeve T-shirts, long sleeve T-Shirts and hooded, pullover sweatshirts.
Sweatshirts are only available by preorder. To ensure you get your favorite style in the right size, place your order at the CEBAF Center front desk or by calling Dave Abbott at x7190 or Bridget Paul at x7306, by close of business Thursday, Aug. 9. Prices are:

  • Short Sleeve T-Shirts $7
  • Long Sleeve T-Shirts – $10
  • Sweatshirts (available by preorder only) – $20

Quantities are limited, so be sure to order yours today!

Department of Energy Sponsors Food Drive at JLab, Aug. 6-16
The DOE, including the Thomas Jefferson Site Office staff, is again participating in the Feds Feed Families food drive campaign. Site Office staff will place food-donation barrels near the entrance of CEBAF Center Aug. 6-16. Lab staff contributions to this food drive are welcome, with the understanding that participation is strictly voluntary. Anyone wishing to participate may place non-perishable donations (non-glass items) in the marked barrels. For more information on the program, contact Steve Neilson at x7215. This Virginia Peninsula Foodbank poster includes a list of most-needed items.

JLab to Test Tornado Warning Siren Friday at 10:30 a.m.
JLab's tornado warning siren will undergo its monthly operational test at 10:30 a.m. on Friday, Aug. 3. Depending on weather conditions at the time of the test, the siren may be heard by anyone outdoors within a 1.5-mile radius of the lab. 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. A sign will be posted at the Central Materials Storage Area gate to notify entrants of the test. It will be removed when the test is over. More information about the siren is in this March 2012 On Target newsletter article.

Onsite Blood Drive Set for Aug. 21
The next American Red Cross Blood Drive is scheduled for Tuesday, Aug. 21, 10 a.m.-4 p.m. in CEBAF Center Room F113. New and repeat donors are encouraged to attend. Appointments and walk-ins are welcome. To schedule an appointment, contact Johnie Banks, x7539.

JLab Community Invited to Intern Poster Session on Aug. 3
The JLab community is invited to attend the 2012 Summer Interns Poster Session planned for Friday, Aug. 3, 11:45 a.m. to 1:30 p.m. in the CEBAF Center lobby. More than 35 participants of this year's High School Summer Honors Internship Program, the Science Undergraduate Laboratory Internship (SULI) program and the Research Experiences for Undergraduates (REU) program will be on hand with posters they developed based on their work or research projects. The students are eager to explain and discuss their work and questions by members of the lab community are encouraged.

Tracking Thomas at JLab
Little Thomas is visiting all corners of the JLab campus. If you can identify his location this week, email Kandice Carter with your guess. Guesses are accepted through Friday.

Congratulations this week go to Ryan Roussel, Samika Hawkins, Tommy Michaelides Dave Fazenbaker, Brita Hampton and Pashupati Dhakal, who were the first to correctly identify the location for July 25. Honorable mentions go to Saptarshi Mandal, Narciso Gomez, Michelle Shinn, Anna Cornejo, Harry Fanning, Lori Zukerman, Dan Lazarz, Abi McFarland, Robert Martin and Keith Harding. Check out the Tracking Thomas webpage for a better view of his last location and this week's new mystery photo.