Jefferson Lab Weekly Briefs June 10, 2009
Jefferson Lab Weekly Briefs
June 10, 2009
12 GeV Upgrade
Best-and-Final Offers for the fabrication of the "Q1" superconducting quadrupole magnet for the new Super High Momentum Spectrometer in Hall C have been received, and evaluation has been completed. The award package is being reviewed by DOE. Vendor responses to complete proposals for the Hall B torus magnet have come in and are under evaluation. Similar responses for the Hall B solenoid magnet are ongoing. Proposals for Hall C's Q2, Q3, and dipole magnets are due in a month.
Halls B and D have started many detector-related construction activities, and Hall C is in the process of evaluating its shield house design to slightly decrease weight and allow easier use of commercial bearings. Noticeably, Hall B has prepared Advanced Procurement Plans for its FY10 silicon sensor assemblies and forward time-of-flight photomultiplier tubes and high-voltage dividers.
In Hall A, production running for experiment E05-102, Measuring the Transverse Asymmetries in the 3He(e,e'd) Reaction, continues to proceed very smoothly.
The accelerator has been running well this past week, with only minor interruptions to beam delivery. Several test plans for the injector were completed during the scheduled beam studies, and the injector photocathode was reactivated, resulting in a good quantum efficiency. A quick access was made into the south linac to repair a minor water leak, and the arc 2 and arc 9 magnet power supplies tripped off several times, requiring the support of system experts to recover.
The FEL team is working to reestablish stable operations for the Joint Technology Office experiments and user tests now that systems are running again. Initial beam transport has been established, and the FEL is preparing to lase.
JLab's Safety Numbers
156 Days since Last Recordable Accident (JLab record: 331)
JLab Calendar of Events
June 1-19: HUGS 2009
Summer Education Calendar
Environment, Safety, Health & Quality
The hot weather has arrived, so now is a good time to emphasize some basic information about "beating the heat" both at JLab and at home. During hot weather, remember that heat sensitivity is affected by age, weight, fitness condition and other medical conditions. Don't overdo it! Follow these tips to stay cool:
For additional information, see JLab EH&S Manual Chapter 6670, Thermal Stress.
Computing and Networking Infrastructure
Adobe Acrobat Reader 9 Fix
Helpdesk Extended Summer Hours
JLab Conducts Interruptible Electric Load Test
Those individuals/groups using systems that are electrically power intensive, such as DC power supplies, operations in the Test Lab VTA or cavity test areas, should schedule their operations such that energy intensive operations do not occur during the 2-3 p.m. test time on June 11. Those operations should not start after 11:30 a.m. on that day.
Batch Farm Operations Stop Early for June 11 Power Reduction Test
Don't Forget: Timely Timesheets Aid Salary Adjustment Process
Worker Safety and Health Program Pamphlet
Texting While Driving in Virginia Illegal After July 1