Jefferson Lab Weekly Briefs June 3, 2015
Jefferson Lab Weekly Briefs
June 3, 2015
12 GeV Upgrade
On the Tunnel Air Conditioning contract, the chillers were delivered and set on the concrete pads on May 19. Warwick Plumbing & Heating is installing the piping to the chillers and the electrical subcontractor, Carr Electric, is running power to the chillers. Work in the tunnel resumed with the start of the summer accelerator shutdown. Warwick Plumbing & Heating is installing chilled water pipe in the west arc and the controls subcontractor, Dominion Electric, is installing conduit.
Congratulations to Award Recipients!
- Anatoly Radyushkin, Jefferson Lab/Old Dominion University, was named joint recipient of Jefferson Science Associate’s 2015 Outstanding Nuclear Physicist Award with Xiangdong Ji, University of Maryland/Shanghai Jiao Tong University. They are being recognized for their seminal roles in the development of Generalized Parton Distributions and the identification of associated experimental observables via Deeply Virtual Compton Scattering. For more information, see the JSA press release at: http://www.jsallc.org/news/JSAONP050715.pdf
- Seven individuals have received JSA Graduate Fellowships to conduct research at Jefferson Lab. Congratulations to Melissa Beebe, College of William and Mary; Marco Pannunzio Carmignotto, The Catholic University of America; Kayla Craycraft, The University of Tennessee; Jie Liu, University of Virginia; Chao Peng, Duke University; Cheng-Ying Tsai, Virginia Polytechnic Institute and State University; and Aristeidis Tsaris, Florida State University. For more information, see the JSA press release at: http://www.jsallc.org/news/JSAGF20150526.pdf
Published Journal Articles, May 18-29, 2015
I. Niculescu, G. Niculescu, W. Melnitchouk, J. Arrington, M. E. Christy, R. Ent, K. A. Griffioen, N. Kalantarians, C. E. Keppel, S. Kuhn, S. Tkachenko, and J. Zhang. "Direct observation of quark-hadron duality in the free neutron F2 structure function." Phys. Rev. C 91, 055206 (2015).
Igor Danilkin, Cesar Fernandez Ramirez, Peng Guo, Vincent Mathieu, Diane Schott, Meng Shi, Adam Szczepaniak. "Dispersive Analysis of ω/ø→ 3π, πϒ*." Phys. Rev. D 91, 094029 (2015).
Center for Theoretical and Computational Physics
A new paper <arXiv:1505.01715> presents a unitary dispersive model for η→3π meson decay into three pions, based upon the Khuri-Treiman equations. The approach incorporates substraction constants fixed by fitting recent high-statistics η→π+π-π0 data from WASA-at-COSY. Based on the parameters obtained and matching to chiral perturbation theory, the slope parameter for the neutral channel and the quark mass double ratio are predicted to be α=-0.022±0.004 and Q=21.4±0.4, respectively.
The Machine Shop is presently manufacturing or continuing to manufacture:
Facilities Management and Logistics
Lab-wide Annual Property Inventory Underway, June 1 – July 31
Fire Hydrant Testing Around CEBAF Center after 4 p.m. on June 4
Summer Science Education/Enrichment Programs
Environment, Safety, Health and Quality
Interns, Program Participants are Arriving Daily: Help Them Work Safely
The Sponsor may also request that another JLab employee serve as a Mentor/Supervisor for the student. The Mentor/Supervisor ensures that the student is prepared for work - has the appropriate training - and provides oversight for the student’s activities. (Oversight means sufficient presence at the student's work site to ensure that the student remains within the defined scope and work and follows safety requirements.)
Pre-SAD Briefing Posted; If You Did Not Attend, Review Before Working Inside Accelerator Site Gate
Know, Heed the Jefferson Lab Smoking Policy
Rad Worker I and Rad Worker II Classes Planned for July 7 and 14
Be Sure to Get Credit When Completing Online Radiation Worker Training
All Members of JLab Community Asked to Take Employee Concerns Program Survey
2015 JLab T-shirt Distribution and Sales; Special Order Deadline is 5 p.m. on June 4
Those with a T-shirt voucher or a bib tab with a sticker on it are eligible for a free T-shirt and may pick them up at the CEBAF Center Reception Desk. Extra-large (XL) is currently the only size in stock. If you need a different size, please sign the special order form by 5 p.m. on Thursday, June 4 and allow two weeks for delivery.
This year the following items, with the winning design printed on them, can be special ordered by 5 p.m. on June 4. Expect two weeks for delivery:
Short Sleeve, Adult: S- 5XL, $7
Firefighters at Lab on June 5 for Training Program; Expect Congestion in CC Parking Lot, Front Atrium
JLab Implements Process to Improve Public Access to Research Results
JLab to Test Tornado Warning Siren at 10:30 a.m. on Friday, June 5
|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.|