• Main INDEX
  • Monthly INDEX
  • PREV
  • NEXT

    User name X. Zheng

    Log entry time 08:02:44 on June19,2007

    Entry number 205925

    keyword=owl shift summary

    00:00 Noticed the range for up- and downstream BCM in beam current monitor are both (0,1.0) and the charts are out of range; changed to (0,80.0) by typing in the blue box but the new values were not taken by the gui. Closed and restart it solved the problem.

    4:45 Took radiator out.
    6:02 Put radiator in 6%.

    Runs 1346 and 1353 had abnormal TDCs for Left S1 and Right S2, see entries 205898-99 and 205922. Don't know if this is related to the deadtime problem. Note that both runs had normal ending but they did both follow a "bad" run. On the other hand, runs 1349 and 1351 had good TDCs.


    run# / radiator / I(uA) / events / comments
    1345 / IN6% / 30 / 723K / high deadtime at the end of run
    1346 / IN6% / 30 / 1M / possible problem with TDCs
    1347 / IN6% / 30 / 1M / good
    1348 / IN6% / 30 / 986K / high deadtime at the end of run
    1349 / IN6% / 30 / 1M / good

    1350 / OUT / 50 / 554K / high deadtime at the end of run
    1351 / OUT / 50 / 607K / good

    1352 / IN6% / 30 / 375K / high deadtime again
    1353 / IN6% / 30 / 1M / possible problem with TDCs
    1354 / IN6% / 30 / 707K / high deadtime again