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    User name Kelly

    Log entry time 15:56:46 on July26,2001

    Entry number 67757

    keyword=day shift summary

    Day shift 7/26/01
    =============
    0800: configuration: p0=1.32, theta=35deg, BeO/C multifoil, 22 uA, beam halfwave plate in, pseudorandom mode
    0830: charge asymmetry feedback is not working. Manual adjustment seems to work better if the slope is positive despite Antonin's claim that the slope should be negative with the beam halfwave plate in.
    1022: automatic charge asymmetry feedback does not work because parity DAQ is not writing data files. Restarted coda, but still does not write a data file. Bob found that a parity database was corrupted. Parity run 1425 was in progress for 2286/21286. We ended 1425, abort, configure, download; then started 1426 without interrupting left or right runs. Parity run 1426 is writing a data file, starting partway through 2286/21286.
    1230: MCC says they will take beam at 1500 for tuning Hall C and we should not expect it back before 1800.
    1313: RF problems
    1335: beam unstable for last half hour. Just had a large but brief BPM excursion (y->-4.3).
    1400: start EPR
    1400: Run 2291/21291 has large charge asymmetry. Trying to adjust feedback manually, but beam is unstable. Need to enter smaller charge asymmetry in GUI than obtained from apar in order to prevent overcorrection. Run 2291/21291 should probably be discarded. Automatic feedback is off.
    1500: charge asymmetry 27 ppm for 2292. Automatic feedback still off.
    1500: Hall C tuning delayed until 1730.
    1545: charge asymmetry for 2293 0+/-6 ppm! Automatic feedback off.
    1545: request beam halfwave OUT
    1550: MCC sending tune beam to dumplets to investigate second-pass separation
    .
    runs.....................left.......right.......total....comment
    2281/21281....1.94M....2.03M....3.97M
    2282/21282....2.29M....2.35M....8.61M
    2283/21283....1.99M....2.03M..12.63M
    2284/21284....2.27M....2.33M..17.23M
    2285/21285....1.19M....1.22M..19.64M
    2286/21286....2.68M....2.81M..25.13M
    2287/21287....2.09M....2.17M..29.39M
    2288/21288....2.21M....2.29M..34.50M
    2289/21289....1.73M....1.78M..38.01M
    2290/21290....1.83M....1.89M..41.73M
    2291/21291....1.18M....1.21M..44.12M...bad charge asymmetry (discard?)
    2292/21292....2.01M....2.08M..48.21M
    2293/21293....2.13M....2.19M..52.53M...Done