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    User name jpchen

    Log entry time 08:03:56 on December 8,2007

    Entry number 219132

    keyword=owl shift summary

    Owl shift summary:
    Shift workers: J. P. Chen (SL), X. Li (TO), L. Lagamba (3rd).

    0:00 continue boiling test with left 12C with left arm at 15 degree,
    1.29809 GeV/c (+3%).
    previous shift completed 5 uA and 10 uA. We start with 20 uA.
    Right arm also set at 854.941 MeV (last production setting).
    Also take boiling test runs (starting with 20 uA).
    1:40 moved left sieve in and to optics target.
    2:05 moved left sieve out.
    2:15 moved to left Fe for right production
    2:35 moved left to 20 degree (for He boiling test).
    2:40 change left P to 1233.873 MeV (He elastic).
    4:03-4:20 change left angle to 33 degree and P to 1034.956 MeV.
    4:30-4:45 right TS0 frozen. reboot and restarted coda.
    due to prescale.dat files not saved properly, runs 3527/3528 high deadtime.
    5:30 completed 1.256 GeV data taking, including boiling test with 12C, He and Pb+LH2. Did not have time to do boiling test with LH2.
    5:30 energy change to 739 MeV started.
    5:35 started to move both spectrometers to 90 degrees.
    finished by 6:45.
    Changed both spectrometer momentum to 712.65 MeV (cycled Q2/Q3).


    Left at 15 degree, 1298.09 MeV/c,
    Boiling test on left 12C:
    3505, 20 uA, 0:03-0:18, 3408K
    3506, 30 uA, 0:20-0:32, 2827K
    3507, 40 uA, 0:33-0:42, 1959K
    3508, 50 uA, 0:43-1:02, 3667K, beam tripped several times, then 45 uA for a few minute.
    3509, 50 uA, 1:03-1:09, 1569K, beam tripped once at beginning, then stable.
    3510, 60 uA, beam not stable.
    3511, 60 uA, 1:16-1:21, 1404K
    3512, 70 uA, beam not stable.

    optics runs
    3513 30 uA on optcis target with sieve in at +3%, 1:53-2:04, 503K
    3514 30 uA on optics target with sieve out at 3%, 2:08-2:12, 1045K

    left elastic (while right production):
    3515 30 uA on left Fe. 2:20-2:25, 1010K.

    He boiling test at 20 degree, 1233.873 MeV
    3516, 5 uA, 2:48-2:54, 1355K
    3517, 10 uA, 2:55-3:01, 1375K
    3518, 20 uA, 3:02-3:09, 1910K
    3519, 30 uA, 3:11-3:18, ~1200K, three beam trips after 3 minutes.
    3520, 30 uA, 3:19-3:23, 1213K
    3521, 40 uA, 3:36-3:41, 1355K,
    3522, 50 uA, 3:45-3:48, 565K, tripped near the end
    3523, 50 uA, 3:49-3:52, 1037K
    3524, 60 uA,3:55-4:02, 1679K

    boiling test with Pb target
    3525, 5 uA, 4:21-4:28, 1011K
    3526, 10 uA, 4:29-4:39, 2206K
    3527, 20 uA, 4:42-4:44, 473K, high deadtime
    3528, 20 uA, high deadtime.
    3529, 20 uA. 4:48-4:54, 1186K
    3530, 30 uA, 5:04-5:08, 1034K
    3531, 40 uA, 5:09-5:14, 1238K
    3532, 50 uA, 5:15-5:21, 1587K, (beam tripped once)

    Hydrogen elastic whil right production.
    3533, 20 uA on LH2, 5:25-5:30, 1055K.

    Cosmic runs during energy change:
    3534, cosmics,

    Right at 15 degree, 854.941 MeV/c
    boiling test on left 12C (also production for last setting):
    21604, 20 uA on left 12C. 0:06-0:18, 3152K
    21605, 30 uA, 0:21-0:32, 2819K
    21606, 40 uA, 0:34-0:41, 1710K
    21607, 50 uA, 0:44-1:02, 3424K, beam tripped several times, then 45 uA for a few minutes.
    21608, 50 uA, 1:03-1:09, 1657K, tripped once at beginning, then stable.
    21609, 60 uA, 1:16-1:21, 1321K

    21610, 30 uA, optics target, 1:55-2:04, 2341K
    21611, 30 uA, optics target, 2:05-2:12, 1799K

    21612, 30 uA on left Fe, 2:19-2:25, 1332K
    21613, 30 uA on 10 cm dummy, 2:33-2:39, 1582K

    He target, (while left boiling test)
    21614, 5 uA on He, 2:50-2:54, 1061K
    21615, 10 uA on He, 2:56-3:01, 1876K
    21616, 20 uA on He, 3:03-3:08, 1702K
    21617, 30 uA on He, 3:12-3:23, 2693K
    21618, 40 uA on He, 3:36-3:41, 1350K
    21619, 50 uA on He, 3:45-3:53, 1653K
    21620, 60 uA on He, 3:56-4:02, 1344K

    Pb target (while left boiling test)
    21621, 5 uA on Pb, 4:10-4:21, 3321K, endrun failed, TS0 frozen.
    21622, 20 uA on Pb, 4:46-4:55, 2283K
    21623. 30 uA on Pb, 5:05-5:08, 708K
    21624, 40 uA on Pb, 5:10-5:14, 997K
    21625, 50 uA on Pb, 5:15-5:21, 1274K

    21626, 20 uA on LH2. 5:24-5:30, 1574K.