Jefferson Lab Weekly Briefs October 29, 2008
Jefferson Lab Weekly Briefs
October 29, 2008
12 GeV Upgrade
Vendor proposals have been received for fabrication of the 4m beam transport dipoles. Evaluation continues on the submittals for fabrication of the 4.5K coldbox, klystrons and superconducting accelerator cavities.
L'Oreal USA Fellowships For Women in Science
The AIP State Department Science Fellowship Program
This period was marked by vigorous work on fixing myriad problems that always appear after such a long down. Some of the notable issues were replacement of a master oscillator source, a leaking vacuum feedthrough, several magnet shunt failures, and a Central Helium Liquefier Turbine #3 contamination problem. Accelerator staff achieved continuous wave beam to all three experimental halls on Sunday.
Free-Electron Laser (FEL)
FEL staff has turned on the electron beam and has begun setting up injector parameters. The cathode seems to have excess field emission despite efforts to process it. Although it may be necessary to replace the cathode in the future, FEL staff intends to continue setting up the machine for now.
The cost of generating gauge configurations with dynamical fermions is very high; but once given those configurations, the cost of changing the valence quark mass is relatively low. This means that if one has a consistent scheme within which to analyze chiral corrections, partially quenched QCD (pQQCD) is a cost-effective way to improve the statistical errors on the extracted physical quantities. A recent paper (arXiv:0810.3432 [hep-lat]) analyzes an extensive database of results for the nucleon mass in pQQCD, generated by the CP-PACS collaboration, with the conclusion that the "Adelaide" approach (finite range regularization) is clearly the preferred method for extracting physical results from data over a wide range of quark masses.
JLab's Safety Numbers
49 Days since Last Recordable Accident (JLab record: 331)
JLab Calendar of Events
Oct. 29: JLab Fall Festival
Environment, Safety, Health & Quality
Disposing of hazardous waste or chemicals must be performed in an appropriate manner. Recently, there have been incidents where people have left hazardous materials, sometimes in unlabeled containers, at the Safety Lab (Trailer 35) and other offices. The containers ranged from a few ounces to 55-gallon drums. These practices have far-reaching impacts such as:
The proper disposal protocol is to make arrangements ahead of time with a person. Do not leave a voicemail or send an e-mail and then drop it off. The waste delivery must be made during regular hours and contents/containers must be properly identified and labeled. Contact Brett Lewis at x6254 or Jen Williams at x7882 to make arrangements to deliver your hazardous waste.
EH&S Manual Chapters 6730-6770 concern proper waste management techniques at JLab. These chapters and the individual subject areas they address are conveniently available on this EH&S Manual Table of Contents page. Always seek advice beforehand if you are unsure of the proper way to dispose of chemicals or other hazardous materials.
Computing and Networking Infrastructure (CNI)
Brief Nameserver Outage on Tuesday, Nov. 4
JLab Community Invited to See New General Purpose Building
The building is adjacent to the South Access Building (#38) on the southeast corner of the Accelerator Site. It features eight roll-up and eight personnel access doors and has floor space that can be divided. It will be used to support lab projects, in addition to some of the space being used for general storage. Recently, Furniture Freestock (excess office furniture) moved into one of the bays. Other proposals currently being evaluated would move two accelerator support functions into portions of the building.
Parking is limited at Building 36. Lab staff without GERT or Rad Worker training will need someone with appropriate training to escort them onto the Accelerator Site and to the building.
Schedule Disposal of Your Excess Property Through Online Form
Note that only the custodian can dispose of his or her assigned property. Keep items in your office or work space until picked up for disposal. If you have questions, contact the Jefferson Lab Property Office at x7348, x6270 or x7688.
GEN034 Expiration Notices
The automatic messages that you will receive refer to the 2008 version of Security Awareness Training and should be ignored unless you are a new employee or a new contractor. All new employees and contractors must complete the training on their start date.
The 2009 version of Security Awareness Training will be available soon. An e-mail will be sent when this updated version has been published. Once the 2009 version is published, everyone at the lab will have until the end of this year (2008) to renew their training.
Physics Nobel Laureate Speaks
Late-Breaking Briefs - Oct. 30, 2008
JAG Rec. League Basketball Planning Meeting Nov. 3
The Jefferson Lab Activities Group basketball team will have an organizational meeting on Monday, Nov. 3, at 5 p.m. in the CEBAF Center cafeteria dining area. The group hopes to submit a roster to the Newport News Recreation League for the Winter 2008 Adult Basketball League. Anyone interested in joining the team or wanting more information may contact Bob Michaels, Physics Division, (firstname.lastname@example.org) or visit the URL http://www.jlab.org/~rom/bball .
The United Way Prize Ticket is 253334; Check Your Tickets
The annual United Way fundraising campaign ended yesterday afternoon during the Oktoberfest with the drawing to determine the winner of the 42-inch LCD/HD television. The winning ticket number is 253334. If you have the winning ticket, please present the ticket to Human Resources Director Rhonda Barbosa by 5 p.m. today. If a winner hasn't been named by then, a new winning ticket will be drawn. Contact her at x5991 or email email@example.com if you have the winning ticket.
Postponed: JLab Community Invited to See New General Purpose Building