Jefferson Lab Weekly Briefs November 8, 2017

Jefferson Lab Weekly Briefs
November 8, 2017

Physics

Jefferson Lab Published Journal Articles, Oct. 23 - Nov. 3

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

Publications Refresher Course Offered Nov. 15
The next publications refresher course will happen on Wednesday, Nov. 15, at 2 p.m. in CEBAF Center room F228. Plan to attend to learn how to use the Jefferson Lab Publications System to manage your papers. DOE PAGES and ORCIDs will also be discussed. If you plan to attend, R.S.V.P. to kindrew@jlab.org by close of business on Tuesday, Nov. 14.

Archives Photo of the Week
This week's photo features Howard Fenker conducting the cryogenics demonstration at the 1996 Virginia State Fair.

Center for Theoretical and Computational Physics

The first global QCD analysis of the quark transversity distributions in the nucleon has been performed, using a new Monte Carlo method based on nested sampling and constraints on the isovector tensor charge gT from lattice QCD. A simultaneous fit to the semi-inclusive Collins asymmetry data is compatible with gT values extracted from a comprehensive reanalysis of existing lattice simulations, in contrast to previous analyses which found significantly smaller gT values.  The contributions to the nucleon tensor charge from u and d quarks are found to be δu = 0.3(2) and δd = -0.7(2) at a scale Q2 = 2 GeV2 .

Jefferson Lab Calendar of Events

Nov. 13: Safety Shoe Truck on-site
Nov. 14: JLEIC Lunch
Nov. 23-24: Thanksgiving holiday, Jefferson Lab closed
Dec. 25-Jan. 1: Holiday Shutdown, Jefferson Lab closed

Environment, Safety, Health and Quality

Extending the Life of Lithium-Ion Cell Phone Batteries
The U.S. Department of Energy Office of Science recently posted a research highlight that offers new insights into how the source of electrons in lithium-ion batteries, the cathode, fails. It turns out that the materials that make up the negative electrode, or cathode, in most common cell phone batteries lose structural integrity after repeated charging and discharging. Scientists revealed that high-voltage cycling is the driving force leading to cracks inside grains that make up the cathode, causing the cathode to fail.

The results suggest mitigation of intragranular cracking requires a stable structural framework of the cathode material and carefully controlled cycling conditions. For high-voltage applications, the material’s chemistry and structure must be adjusted to minimize internal grain strain during charge and discharge cycling. In the end, these findings could generate new strategies to design stable, safe lithium-ion batteries with high energy density and a long cycle life.

Announcements

Hermann Grunder Recognized by IEEE Nuclear and Plasma Sciences Society
Jefferson Lab’s founding director is being honored “for far reaching contributions to accelerator science and technology.” Grunder has been selected as one of two recipients of the IEEE NPSS Particle Accelerator Science and Technology (PAST) Award, which will be presented at the 2018 International Particle Accelerator Conference (IPAC’18) in Vancouver. Read more here.

Reception Honoring Fulvia Pilat Set for Nov. 8
After seven years at Jefferson Lab, Fulvia Pilat is leaving for her next chapter. Join us in celebrating her contributions to the lab at a reception being held in CEBAF Center room F113 on Wednesday, Nov. 8 in the afternoon, 3:30-5 p.m.

JLab Salutes Military Veterans on Friday, Nov. 10
In recognition of Veterans Day, Jefferson Lab invites staff military service veterans to stop by the CEBAF Center lobby anytime between 11:30 a.m. – 1 p.m. on Friday, Nov. 10. Service members are invited to check out the display, enjoy a cupcake, and sign the service honor sheet. Copies of the service photos poster will also be available for pickup. A group photo of military veterans will be taken at 1 p.m. in the CEBAF Center lobby. For veterans working on the Accelerator site, cupcakes will also be delivered to the MCC, Bldg. 85, conference room after 1 p.m. If you have any questions about this activity, contact Mike Robbins at mrobbins@jlab.org.

Jefferson Lab Archives Seeks T-shirts
The Jefferson Lab archives is seeking to complete its collection of Jefferson Lab T-shirts. If you have T-shirts from Safety, Science Bowl, Open House, the 1995 Run-A-Round or other Jefferson Lab events, and you are willing to donate them, email history@jlab.org with a description of the items you'd like to donate.

JLEIC Lunch Event Series Launched
Learn more about Jefferson Lab’s efforts toward an Electron-Ion Collider from the scientists who are making it happen. This weekly brown bag lunch series is aimed at scientists of all levels. Bring your own lunch and curiosity to CEBAF Center room A110 on Tuesdays at noon. An informal panel of accelerator and nuclear physicists who are working on the Jefferson Lab EIC (JLEIC) will be available to discuss the details of the project. For more information about the JLEIC Lunch Series, contact Rik Yoshida at ryoshida@jlab.org or x6828.

Quark Cafe Plans Thanksgiving Warm-up Buffet for Thursday, Nov. 16
Quark Cafe staff will host a Thanksgiving Warm-up Buffet 11:30 a.m. - 1:30 p.m. on Thursday, Nov. 16. The menu will include herb-roasted turkey, maple-glazed ham, candied yams, green bean casserole, mashed potatoes and gravy, collard greens, sweet potatoes, stuffing and fresh-baked rolls. The price for one self-serve buffet plate will be $12.99. For additional details, see the full memo.

Pre-Order Your Thanksgiving Pie through Nov. 16
The Quark Cafe staff is taking Thanksgiving pie orders through 2 p.m. on Thursday, Nov. 16. Selections that may be purchased to take home for the holiday include pumpkin, apple, pecan, buttermilk, and Kentucky Derby pies. See the full memo for order information.

JAG Hosts Food Drive Through Nov. 17
The Jefferson Lab Activities Group has positioned food drive collection boxes for nonperishable food items for the 21st Annual Mayflower Marathon Food Drive. All donations will be collected around 3 p.m. on Friday, Nov. 17, and delivered to the Peninsula Food Bank. Boxes are located in the CEBAF Center lobby, Support Service Center lobby (Bldg. 28), the TED 2nd floor lobby (Bldg. 55), and the ESH&Q Building entrance (Bldg. 52). For more information, see the full memo.

SOTR Training Offered Nov. 29
A Jefferson Lab training session for any new Subcontracting Officer Technical Representatives (GEN020) or anyone who wants a refresher class will take place Wednesday, Nov. 29, 8 a.m.-12:30 p.m. in room 53 of the Support Service Center, Bldg. 28. Registration for this class is required. See the full memo for details.

JLab Weekly Briefs is an ongoing publication providing information on the status of safety, accelerator operations, experiments, 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.