Jefferson Lab Weekly Briefs April 16, 2014
Jefferson Lab Weekly Briefs
April 16, 2014
12 GeV Upgrade
At the request of DOE's Office of Nuclear Physics, Stephen Meador, Acting Director of the Office of Project Assessment in DOE's Office of Science, convened a team of 16 experts and eight observers in an Independent Project Review of the 12 GeV CEBAF Upgrade Project at Jefferson Lab April 8-10. The purpose of the review was to assess all aspects of the project, including technical, cost, schedule, management and ES&H. The review team provided valuable feedback in all areas and a total of 12 specific recommendations in the areas of superconducting magnets and project management. The committee congratulated the 12 GeV Team on the significant progress made in the accelerator and experimental hall detectors, as well as the project’s safety record and lab implementation of the Accelerator Readiness Review and commissioning processes.
JSA Sabbatical and Research Leave Support at Jefferson Lab
Jefferson Lab Published Journal Articles, April 7-13
Remember to submit your papers for approval to the Jefferson Lab Publications database.
Records and Information Management Month Fact of the Week
RIM Trivia Question of the Week
Center for Theoretical and Computational Physics
Amplitude analysis of two-photon production of ππ and KK, using S-matrix constraints and fitting all available data, including the latest high statistics results from Belle, yields a single partial wave solution up to 1.4 GeV. The two-photon couplings of the σ/f0(500), f0(980) and f2(1270) are determined from the residues of the resonance poles. Thanks to the very recent construction of a dispersive framework for Light-by-Light reactions, the results presented in the new analysis will bring a new precision to the on-going calculation of the hadronic contribution to the anomalous magnetic moment of the muon. Reducing these uncertainties is essential if new experiments planned at Fermilab and J-PARC are to deduce hints of physics beyond the Standard Model that can compete with a series of Jefferson Lab experiments, such as Q-weak and APEX.
In the last six weeks, the Installation and Vacuum groups completed their 12 GeV beam transport work. This work included quadrupole girder swaps in the tunnel sections to Halls A, B and C. This work also involved beam pipe installation with leak checking.
The Cryogenics group provided installation with two skilled welders to work the skids and piping for the Hall D dump, and they were instrumental in completing this work on schedule.
The Installation group also worked on hot hheckout for the accelerator, supported EES with power supply moves, and completed LCW work to the radiofrequency separator amplifiers. Ahead of the summer down, work has begun on the Hall C Moeller and Compton projects, and prep work has been done for the dogleg magnets upgrade. Additionally shimming of the Hall B beamline was completed to accommodate the raised beam height.
Facilities Management and Logistics
Jefferson Lab Parking Lots to Be Closed April 26-27 for Markings Painting
The subcontractor will provide traffic control to ensure the safety of its crews while also allowing traffic to continue to flow in and about the lab. Awareness of their presence as well as adhering to the traffic controls is required. Refer to the attached PDF to see the scope or the project. All road traffic markings and highlighted parking areas are scheduled for re-painting. Thank you for your attention to this work.
Jefferson Lab Calendar of Events
April 18-19: USQCD All-Hands Meeting
Environment, Safety, Health and Quality
The investigation found that three types of similar looking and sized caps were used in the chemical area. Some caps had six threads per inch and others had eight threads per inch, while the third had a slightly larger diameter. Obviously, using a matched size and thread type cap is critical for chemical safety. However, this should be applied to other containers as well. Make sure the original cap is kept with the container when it is removed. This applies to any size or type container and not just carboys of hazardous chemicals. The injury you may prevent could be your own.
Computing and Networking Infrastructure
Network Outages planned for Tuesday, April 22, 5-7 p.m.
If you have any questions or concerns, contact the IT Division Helpdesk, x7155.
Jefferson Science Associates Minority/Female Undergraduate Research Assistantship
TIAA-CREF Individual Counseling Available by Appointment
Dark Forces, Dark Matter, and the GeV-Scale Discovery Frontier
Annual Property Training & Validation Due April 18
Student Projects, Volunteer Mentors Needed for High School Interns
Tracking Thomas at Jefferson Lab
|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.|