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    User name A. Tobias

    Log entry time 08:00:27 on May18,2009

    Entry number 274448

    keyword=Owl Shift Summary: Monday 18 May 2009

    Owl Shift Summary: Monday 18 May 2009

    A. Tobias (SL)
    D. Parno (TO)
    W. Luo (3rd)

    Start with Production running on 61.9% longitudinally polarized 3He target with 10 microamp beam current. LHRS and RHRS runs are approximately 25 minutes long (5 million events in LHRS). Compton (HAPPEX) runs are restarted every 2hrs (4hrs). Times below are approximate:

    Run START Times and Target NMR times,
    BB MwDC threshold = 5.5V unless otherwise noted during Miha's scan:

    Time LHRS RHRS Compton HAPPEX NMR 3He
    ----- ---- ----- ------- ------ -------
    23:56 2387 21291
    00:25 2388 21292 16955 31389 61.8%
    00:53 2389 21293
    01:25 2390 21294 - BB MwDC threshold = 7.5V (Miha scan)
    01:30 2391 21295 - BB MwDC threshold = 8.0V
    01:35 2392 21296 - BB MwDC threshold = 8.5V
    01:40 2393 21297 - BB MwDC threshold = 9.0V
    01:46 2394 21298 - BB MwDC threshold = 9.5V
    01:51 2395 21299 - BB MwDC threshold = 10.0V
    01:57 2396 21300 - BB MwDC threshold = 6.75V
    02:03 2397 21301 - BB MwDC threshold = 6.25V
    02:10 2398 21302 - BB MwDC threshold = 5.75V
    02:17 2399 21303 - BB MwDC threshold = 5.5V (back to prod)
    02:25 16956
    02:45 2400 21304 - HRS DAQs stop counting; reboot ROCS & coda
    02:56 2401 21307 - continue production
    03:23 2402 21308
    03:51 2403 21309
    04:20 2404 21310 16957 31390 61.6%
    04:49 2405 21311
    05:16 2406 21312
    05:44 2407 21313
    06:11 2408 21314
    06:20 16958
    06:42 2409 21315
    07:11 2410 21316
    07:38 2411 21317