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    User name Jixie

    Log entry time 19:58:00 on April 02, 2012

    Entry number 369395

    keyword=Changes to the run plan, a note for the shift leader

    Here is a list of changes to the run plan:

    1) Try to do 1~2 bleed through test at each shift. A good time to do this without losting beam time is to do it when you are changing both dipoles.

    2) For each momentum seting, please scale the requird number of events with this formula: N_new = N_old *(31%/)^2, where is the average target polarizaion during the data taking.

    3) At each momentum, try to take 20M events with low deadtime (<15%), then take the rest events with 6~7 kHz daq rate. You can increase the beam current and play with the prescale to reach there. Make sure no more than 75 nA beam current.

    4) At each momentum, do the dilution runs with 100nA rasters beam. After the dilution run, it might take 10~15 minutes to repolarize the target. Try to arrange the dilution runs at the end of the kinematic point such that the repolarization can be done during changing the right dipole.