Log entry time 07:58:45 on February21,2002

Entry number 83355

keyword=shift summary

00:00, start shift with run #2732 at kinematics 3E(e), accumulated charge at this kinematics was 0.0495 C up to run #2731.

01:08, run#2734 is junk;
01:53, run#2736 is a pedestal run;

03:20, turn on veto HV, call MCC to reduce the beam current to 2uA, then at 3:30 ask for 10uA, start kinematics 3E(e*)
run#2741 is a pedestal run;
03:59, MCC called, beam will be secured for 10 minutes, run #2741 stopped early;
04:05, beam back;

04:23, turn off veto HV and RCS Magnet, start kinematics 3E(f)
run#2741 is a pedestal run;
05:00, move target to Carbon, take optics data with beam current 20 uA and raster off;
05:18, move target to LH2 15cm + radiator, turn on RCS magnet, back to kinematics 3E(e), beam current 15 uA and raster on;
run#2747 is junk;
07:00, coda crash (ROC14) during run #2751; Standard "kcoda-reboot-crate reset" did not fix the problem.
08:00, still fixing ROC 14.

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kinematics 3E(e):
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Magnet 600A, calorimeter angle 65.0, distance 5.7m, target LH2R, beam current 15uA, veto HV OFF, PS3=200

run#...runtime......#events......BCMu3(C)......total charge(C)......comment
2732...23:51~00:20......991K......0.02356......0.07306......good
2733...00:21~00:47......991K......0.02349......0.09655......good
2735...00:52~01:19......990K......0.02359......0.12014......end of run epics delayed(*)
2736...pedestal run
2737...01:20~01:50......991K......0.02359......0.14373......good
2738...01:57~02:24......991K......0.02367......0.16740......good
2739...02:25~02:52......991K......0.02347......0.19087......good
2740...02:52~03:20......990K......0.02369......0.21456......good

2748...05:26~05:57......991K......0.02384......0.02384......good
2749...05:57~06:27......990K......0.02381......0.04765......good
2750...06:27~06:55......991K......0.02380......0.07145......good
2751...06:55~07:00......(86K).....(0.00192)......0.07337......coda crash

(*)At the end of run, only halog_com_2735.epics exists, End_of_Run_2735.epics and halog_end_2735.epics showed up at the end of run#2736.

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kinematics 3E(e*):
--------------
Magnet 600A, calorimeter angle 65.0, distance 5.7m, beam current 10uA, veto HV ON, PS3=120

run#...runtime......#events......BCMu3(C)......total charge(C)......comment
2741...pedestal run
2743...03:41~03:59......308K......0.009225......0.009225......good
2744...04:05~04:23......300K......0.009058......0.018283......good

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kinematics 3E(f):
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Magnet 0A, calorimeter angle 65.0, distance 5.7m, target LH2R, beam current 15uA, veto HV OFF, PS3=200

run#...runtime......#events......BCMu3(C)......total charge(C)......comment
2745...04:29~05:00......966K......0.02505......0.02505......good

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kinematics 3E(optics):
--------------
Magnet 0A, calorimeter angle 65.0, distance 5.7m, target Carbon foils, beam current 20uA, veto HV OFF, PS3=200

run#...runtime......#events......BCMu3(C)......total charge(C)......comment
2746...05:00~05:18......110K......0.01119......0.01119......good

User name X. Zheng

Log entry time 07:58:45 on February21,2002

Entry number 83355