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- Pulser Run procedures

    1 Take a pulser run
    2 Analyze the pulser run
    3 Run 7 pulser runs

    1 Take a pulser run

    Bring the SSD up for acquisition (RDO, HV and RDO ON) do a "Start SSD" and take a pedestal run.
    NB : After taking the run, and if other pulser runs are needed, one have to switch back to Full Control mode before launching the script (set_calibration_pulser).
    NB : It is recommended to take a pulser run with pulse level = 0 in order to quantify the noise.

    2 Analyze the pulser run

    To analyze the pulser, one has to run the BigFullChain in order to produce root files containing NTuples.
    Then we used the maker written by Jerome Baudot to plot the total charge on p/n side and their relative gain( ratio) between them.

    Choose the pulser you wan to analyse

    in 2007 we took 32 pulsers with for the most part of them, a pulser amplitude = 100.
    These pulsers were also set up with 4 strips per chips.
    Final list of run : here

    Run the BFC chain

    As you find the path to hpss to the run you want to analyze, type :

    Use StSsdReadMaker

    In this maker, you have explicitely to set the id of the 4 strips fired by the pulser, for the p-side and n-side :
    Then to run this maker, you have to use another macro :
    root4star -b
    .x readPulserCluster.C
    (you have to set up properly the name of the root file produced by the pointMaker here)

    Plot and get the ratio

    As a result , it creates a root file with extension .root_histos.root
    In this file, the plot with the ration of the n over p side is :
    To dump the values in a text file , use this macro :

    3 Run 7 AuAu Pulser run summary

    List of pulser runs taken for Run 7 AuAu.
    For this year, we don't see any pulser on :
Last updated by Jonathan Bouchet on