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GEn_stat_12-05 Hall A Collaboration Meeting December 5-6, 2005 Status Report: G En G. Cates, K. McCormick, B. Reitz, and B. Wojtsekhowski; spokespersons.

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Presentation on theme: "GEn_stat_12-05 Hall A Collaboration Meeting December 5-6, 2005 Status Report: G En G. Cates, K. McCormick, B. Reitz, and B. Wojtsekhowski; spokespersons."— Presentation transcript:

1 GEn_stat_12-05 Hall A Collaboration Meeting December 5-6, 2005 Status Report: G En G. Cates, K. McCormick, B. Reitz, and B. Wojtsekhowski; spokespersons John J. LeRose

2 GEn_stat_12-05 Hall A Collaboration Meeting December 5-6, 2005 Large Scale Experiment Polarized Target/Beam Neutron Arm BigBite with detectors Scheduled to run: Feb. 24-May 10, 2006

3 GEn_stat_12-05 Hall A Collaboration Meeting December 5-6, 2005

4 GEn_stat_12-05 Hall A Collaboration Meeting December 5-6, 2005 Neutron Arm Combined weight of modules and shielding ~83 tons

5 GEn_stat_12-05 Hall A Collaboration Meeting December 5-6, 2005 Polarized 3 HeTarget Using new hybrid cells 7-8 working cells in-hand 4 cells P 50% in the lab (53% max) Short spin-up time implies reduction of P by beam will be small

6 GEn_stat_12-05 Hall A Collaboration Meeting December 5-6, 2005 Project Milestones Nov completion of ND testing -done Nov laser safety review -done Nov first day of down, completion of ND testing, begin decabling. –done Dec 5 – Begin moving BigBite detector package, electronics, and cables (on track) Dec full safety review for GEn (include beamline testing with conclusion of rupture tests) (Committee selected and scheduled for December ?) Dec target motion system working on test bench Dec 15-- septum off pivot, begin moving neutron arm Jan 2 -- target testing complete, dissassemble target, ready to move into the Hall Jan install Big Bite stand Jan operational checkout of polarized target Feb 9 -- Big Bite operational checkout Feb target button up Feb 17 – Laser safety inspection Feb neutron arm complete with shielding

7 GEn_stat_12-05 Hall A Collaboration Meeting December 5-6, 2005 Thursday 12/1/05

8 GEn_stat_12-05 Hall A Collaboration Meeting December 5-6, 2005 Outlook Detector testing and installation are on-track Expected beam and target polarizations are better than anticipated in the original proposal (86% and 50% vs. 75% and 40%) Much work remains, any and all help will be greatly appreciated Its not too soon to signup for shifts


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