• Main INDEX
  • Monthly INDEX
  • PREV
  • NEXT

    User name A. Deur

    Log entry time 21:15:49 on August20,2003

    Entry number 112235

    keyword=Contamination for 10:15

    Contamination for 10:15:

    Empty ref cell: I=9.0 uA, Rate=400 hz, %of coda events passing the analysis cut= 19%

    pol 3He cell: I=8.9 uA, Rate= 4.2 khz, % of coda events passing the analysis cut= 75%

    -> we have 2% of events that are background, after analysis cut.

    With 39.35% and 76.1 % polarimetry and the assumption in the runplan that we loose 20% event from replay cuts, we are actualy taking 6 % more events than expected.

    -> We decided to take 3.2 M event instead of 3.4 (were the file split). This also save a start/stop run.