JLab Weekly
Briefs |
Jefferson Lab Weekly Briefs
|
PhysicsIn Hall A, experiments E06-010, Measurement of Single Target-Spin Asymmetry in Semi-Inclusive Pion-Electroproduction on a Transversely Polarized 3He Target, and E07-013, Target Normal Single-Spin Asymmetry in Inclusive DIS n(e,e') with a polarized 3He Target, have continued to take production data with a high reliability. E06-010 is on schedule; E07-013, running parasitically, will obtain a poorer accuracy than projected due to the late availability of the BigBite gas Cerenkov detector. Both experiments will stop running on Thursday, one day early, to start the transition to Experiment E06-014, Precision Measurements of the Neutron d2: Towards the Electric and Magnetic Color Polarizabilities.AcceleratorThe accelerator continued to perform well, with a continued low trip rate. Six hours were spent on Jan. 27 for beam studies (parallel tuning and measuring the quality factors of cavities and some injector work). Some maintenance was done on an Arc4 box supply and a trim magnet rack.Free-Electron Laser (FEL)
The FEL was operated this week for measurements necessary for three
Joint Technology Office funded projects: low-energy injection,
off-axis injection and short Rayleigh-range lasing. The match to the
wiggler was sufficiently good that FEL staff successfully lased at 2.8
microns with only 5 MeV of injection energy.
|
Environment, Safety, Health & QualityThe JLab Quality Assurance Plan invokes a graded approach for the application of its associated procedures. The Graded Approach Procedure describes how JLab implements this concept. A graded approach uses a disciplined approach to determine the levels of analysis, management controls, documentation and necessary actions commensurate with an activity's potential to:
Additionally, a worker fell from a ladder while conducting overhead maintenance this past Monday. There were no injuries; an initial fact-finding meeting was held, with the objective of finalizing Lessons Learned and any CATS items by Feb. 9. AnnouncementsJLab Mourns Loss of Physicist, Poet, Activist Mike FinnJohn Michael Finn, a College of William and Mary physics department professor and JLab user, passed away Jan. 31 due to a heart attack. Known by many as Mike, Finn was an avid and passionate poet and served as the York/Poquoson Democratic Committee chair. At JLab, he most recently served as one of the Q-weak experiment's collaboration spokespersons. More information can be found online. JLab Colloquium and Public Lecture Robert Tribble, Texas A&M University, will present a look at the wide field of nuclear physics in a colloquium scheduled for 4 p.m. today, Wednesday, Feb. 4, in the CEBAF Center auditorium. The talk, titled Nuclear Physics Beyond the JLab (and QCD) Borders, is open to all. 12 GeV Adopt-A-Spot Litter Pickup Event on Feb. 20 The next JLab Adopt-A-Spot Litter Pick up will be Friday, Feb. 20. Everyone at JLab is invited to take part in this community service project. Sign up on the webpage in advance, so adequate supplies can be provided. Meet in the CEBAF Center lobby at 11:15 a.m. on Feb. 20 for a short safety briefing. Litter pickup will cover the sidewalk and grass areas paralleling Jefferson Avenue, from Onnes Drive to Oyster Point Road. Contact Deb Magaldi if you have questions. JLab Meeting Rooms Locked After Core Business Hours for Property Protection Common-use meeting rooms not being used in the evening are locked after core business hours. If you need access to a locked conference or meeting room, coordinate with your division or work group administrator for assistance. Administrators have keys to these common-use meeting rooms. If rooms are needed after-hours, call the guards at x5822; they will unlock the meeting room when they are available.
|