Log entry time 08:00:40 on June21,2000

Entry number 44499

keyword=Shift summary

Started shift with production running at (-90,180) kinematics.

1:40 MCC takes beam away for a few minutes for beam quality checks since Hall B is complaining.
1:55 Beam returns. 94uA.
2:02 Beam trips, MCC trying to improve things. OTR check.
3:18 Beam dies, RF cavity problem.
3:35 Beam is back.
4:20 Flaky beam for a while (3-5 minutes), eventually stabilizes.
4:40 More beam trips. Not very stable. MCC still sending 89uA.
6:30 Current slowly dropping. Now at 86uA.
7:00 Beam is more stable now. Trips are rare.
7:05 ROC14 dies and takes runcontrol with it. Restarting CODA.
7:11 Beam off. RF trip, qe checks.
7:17 Beam back.
7:25 The beam trips are back
7:55 Stable beam now

Mostly smooth running. Beam somewhat unstable for much of the night.



Run    Events    Comments



2354    1.3M      100uA current!

2355    1.3M      50uA for a few minutes

2356    1.3M

2357    1.3M

2358    1.3M

2359    360k       Beam off for OTR tests (Hall B is unhappy)

2360    1.3M      94uA

2361    1.3M

2362    1.3M

2363    1.3M

2364    42k        Short run, beam off

2365    1.3M

2366    1.3M

2367    1.3M      Frequent beam trips

2368    1.3M

2369    1.3M

2370    1.3M

2371    1.3M      86uA

2372    1.3M

2373    1.3M

2374    370k       ROC14 crash, short run

2375    290k       Beam off

2376    1.3M

2377    1.3M      84uA



about 2.2C this shift

User name Ole Hansen

Log entry time 08:00:40 on June21,2000

Entry number 44499