Main INDEX
Monthly INDEX
PREV
NEXT
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.