Jefferson Lab Weekly Briefs
June 5, 2013
12 GeV Upgrade
Acceptance testing of the tenth and final C100 cryomodule in the Cryomodule Test Facility has been completed. In-tunnel checkout of C100-3 has been completed and checkout of C100-7 has begun. A major event for the new 4 Kelvin helium plant was recently achieved by producing 4500 liters/hour of liquefaction; this was a contract deliverable performance criterion for the vendor. Testing into shorts has been completed on zone 23 in the North Linac, and testing has begun on zone 25. The installation/re-assembly of the east spreader is lacking only the YB septa magnet, the drift tubes, and some low-conductivity water tubing. The pedestals for the 4-meter dipole magnets in the beamline to Hall D have been installed. Forty of the new 10A trim supplies have been received and another 20 are in transit from the vendor. The new box supply for the arc 1 dipole magnet string is being tested at the vendor’s facility. Plating of the new radiofrequency separator cavities has been completed. All 12 GeV project work for the control system hardware has been completed.
Center for Theoretical and Computational PhysicsAs lattice QCD calculations steadily approach percent-level precision for the masses and weak decays of stable hadrons, many researchers are exploring progressively more challenging and correspondingly more interesting QCD computations. In recent work, a new method has been developed for calculating the continuous momentum dependence of the QCD vacuum-polarization function. This is related to the measured energy dependence of the production of hadrons in electron-positron collisions and to the QCD corrections to precision Standard Model observables, such as the anomalous magnetic moment of the muon.
JLab Calendar of EventsJune 4-5: Super BigBite Collaboration Meeting
June 4-6: Heavy Photon Search Collaboration Meeting
June 17: Safety Shoe Vendor onsite
June 17-21: Program Advisory Committee Meeting (PAC40)
June 24: Protecting Your IP Rights seminar
July 4: Independence Day holiday, JLab closed
Environment, Safety, Health and Quality
Safety and Proper Transaction (Ordering) Codes
AnnouncementsLast Chance to Order 2013 Run-A-Round T-Shirt
The Jefferson Lab Activities Group would like to remind all staff, Users and students that 2013 Run-A-Round T-shirts and hats may be purchased for $7 at the CEBAF Center Reception Desk. Short-sleeved adult-sized T-shirts from small to 5XL may be ordered using order forms at the CEBAF Center Reception Desk; the order deadline is 5 p.m. Thursday, June 6. Long-sleeved T-shirts and youth-sized T-shirts may also be ordered. Adults’ small through X-large are $11, 2XL- 3XL are $15. Check the JAG webpage for information about JAG activities and events.
JLab Publications Refresher Offered
Want to submit a paper into the publications system, but not sure how? Are you a seasoned expert with questions that need desperate answers? Bring your coffee and attend the next Jefferson Lab Publications Refresher Course on Tuesday, June 11 in CEBAF Center room F226, 9-10 a.m. Limited seating is available. To save your seat, email your R.S.V.P. - include specific questions you may have - to Kim Kindrew by COB Monday, June 10.
Sequestration Q&A Posted on Insight
You can now find a document with information about the implementation of a reduced pay/work week schedule for Jefferson Lab due to sequestration in the Announcements column of the Insight page.
Monthly Tornado Siren Test Set for Friday
Jefferson Lab's tornado warning siren will undergo its monthly operational test at 10:30 a.m. on Friday, June 7. Depending on weather conditions at the time of the test, the siren may be heard by anyone within a 1.5-mile radius of the lab. Don't respond to the siren; this is a test of the siren system and not a personnel response exercise.
Summer Rental Car Discounts For Jefferson Lab Employees
Enterprise Rent-A-Car and National Car Rental offer Jefferson Lab employees discounted rates for personal use. Contact Veronica, x7269, at CI Travel for details. Mention reference number NA21008, so the discounted rate will be reflected in the reservation she makes for your summer rental.
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.
Dick Owen correctly guessed the location for May 29. Check out Tracking Thomas on flickr for a better view of his last location and this week's new mystery photo.
|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.|