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    User name M.Shabestari

    Log entry time 08:18:12 on April 8,2008

    Entry number 230761

    keyword=Owl Shift Summary

    Owl shift summary April 8th 2008

    SL : Mitra Shabestari
    TO : Mitra Shabestari
    3rd : Khamit Ardashev


    pi0 Production : Kinematics B
    BigBite = 54 degrees, LHRS = 16.5 degrees.



    00:00 Shift started

    00:03 : Run# 2536 Ta: short test
    00:11 : Run# 2537 Optics
    00:16 : Run# 2538 Optics
    00:51 : Run# 2539 Production
    00:59 : Run# 2540 Production; HV trip
    01:04 : Run# 2541 Junk
    01:05 : Changed LHRS momnetum to 0.986 GeV/c
    01:18 : HV tripped
    01:29 : Run# 2542 Production; HV trip
    01:36 : Run# 2543 Production
    01:47 : Run# 2544 Production; ROC5 error
    01:59 : Run# 2545 Production; ROC5 error, rebooted
    02:24 : Run# 254 Production; ROC5 error
    02:37 : Run# 2547 Production; ROC5 error, rebooted
    02:47 : Run# 2548 Production; ROC5 error
    02:54 : Run# 2549 Production; ROC5 error
    03:06 : Run# 2550 Production; ROC5 error

    The soft reboot didn't solve the ROC5 error problem. Called Bryan, and harebooted ROC5. Hareboot fixed the problem.

    03:21 : Run# 2551 Production; HV trip
    03:39 : Run# 2552 Production; HV trip
    03:41 : Run# 2553 Production; good run (1 M events)
    03:53 : Run# 2554 Production; good run (1 M events)
    04:04 : Run# 2555 Production; good run (1 M events)
    04:15 : Run# 2556 Production; good run (1 M events)
    04:27 : Run# 2557 Production; good run (1 M events)
    04:38 : Run# 2558 Production; good run (1 M events)
    04:50 : Run# 2559 Production; good run (1 M events); several beam trips
    05:01 : Run# 2560 Production; good run (1 M events); MWDC HV trip
    05:17 : Run# 2561 Production; good run (1 M events)
    05:29 : Run# 2562 Production; good run (1 M events)
    05:43 : Run# 2563 Production; good run (1 M events)
    05:53 : Run# 2564 Production; good run (1 M events)

    For the last two hours we had good beam, and almost no trip on HVs.

    06:05 : Run# 2565 Production; good run (1 M events)
    06:16 : Run# 2566 Production; good run (1 M events)
    06:27 : Run# 2567 Production; good run (1 M events)
    06:39 : Run# 2568 Production; good run (934 K events); ROC5 error
    06:51 : ROC5 error. Rebooted ROC5.
    --------: Run# 2569 : JUNK
    07:03 : Run# 2570 Production; good run (594 K events); S0 and S14 HV tripped
    07:19 : Run# 2571: ROC5 error
    07:24 : Run# 2572 : JUNK
    07:30 : Run# 2573 : Deadtime fluctuated a lot during this run.

    Deadtime varied from 7% to 62%. stopped the run and rebooted ROC5.

    07:48 : Run# 2574 : JUNK
    --------: Run# 2575 : JUNK

    08:15 :Run# 2576 started.