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    User name Moffit

    Log entry time 15:43:24 on March 23, 2008

    Entry number 228720

    Followups:

    keyword=EDTM settings

    Here's my notes on the EDTM setup.

    In the Left Arm DAQ:
      162ns  Internal delay from the EDTM Master
    

    To BigBite EDTM Slave from the backpanel of the EDTM Master: 16ns lemo cable 8ns FI/FO delay 3ns lemo cable 260ns RG58 cable 8ns lemo cable 140ns Internal delay of EDTM Slave ------ 435ns

    Time Difference in EDTM pulses: B-L = 273

    Consideration for particle TOF and signal times to that point at which each EDTM pulse is inserted:

    e' in Left arm (~1GeV) ---------------------- 87ns TOF 60ns Signal Cable (From PMT) ----- 147ns

    p in BigBite (~1GeV) -------------------- 39ns TOF 206ns Signal Cable (From PMT) 10ns Patch Panel to x10 Amp 1ns x10 Amp delay 8ns Lemo cable to discriminator ----- 264

    Time difference: B-L = 117ns

    To simulate this with EDTM... make sure to account for the 2.2ns timestep in the EDTM Slave: ./edtmsetup 273 53