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User name X. Zheng
Log entry time 00:00:27 on June17,2007
Entry number 205698
keyword=swing shift summary
16:00 shift start from problem with left detector hut IOC. Cannot access "hareboot2" from any web browser;
16:35 also noticed that the previous shift set the left HRS at 45.111 degree (floor mark 45.5), Set it to floor mark 44.5 with vernier -36.5mm now;
16:40- we had 50uA in the Hall for about 25 minutes (for beam optics setup)
17:00- planning for controlled access;
17:55-18:25 harp scan, results: 0.229 (X) x 0.243 (Y) mm.
18:25 move target to Carbon hole;
19:15 Left detector IOC rebooted.
19:00 tried to see the hole, no success. It takes a very long time to accumulate 50K events; Last run with carbon hole target was 1287.
20:20 moved to BeO target, from the TV screen can see the beam position is too low. Asked MCC to adjust the beam to its previous BPM positions.
21:00 Beam positions are now BPMA=(-2.5,1.2) and BPMB=(-3.4,1.7). They cannot move BPMA X to the previous setting -3.1 because it needs too much correction. So I asked to shift BPMB X from the previous -3.7 to -3.4 so the beam will still be close to straight in X.
21:05-21:27: carbon hole runs 1289 and 1290. There seems to be a hole now (with some imagination); Deadtime for runs of this shift so far doesn't look normal (too high);
21:28 moved target to carbon foil; Run 1291 was optics/pointing run with okay deadtime;
22:10 moved radiator IN and target to 3He; Run 1294 was the first 3He production run;
Run summary (good runs only):
1289-1290: carbon hole runs
1291: carbon foil optics/pointing runs
1294-1295: 3He production runs, radiator in