October 23, 2013 tracking CDC/FDC

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Meeting Time and Place

Wednesday October 23, 2013 at 11:00am At Jefferson Lab, the meeting will be held in F326

Connections

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Hardware Agenda

  1. Calibration Discussion

Minutes

Present: Curtis, Naomi, Beni, Simon, Sean

  1. Calibrations
    • Discussion centered on Sean's slides of questions
    • The functions asic_response and cdc_wire_signal HDGeant/hitCDC.c are not used in typical reconstruction
    • It was thought sensible to include wire-dependent gain calibrations, start with all set equal
    • Could approximate wire sag as being the same for all straws.
    • Is there still room for scintillator paddles below and above the magnet?
    • Naomi will send Sean her wiki link which outlines a routine for finding gas mix and time offset.
    • With the 6 ft x 8" paddles at CMU at least 4 days running is needed to get useful data for resolutions.
    • In a 24 hour run, O(100,000) events are recorded in the FDC
    • It would be useful to record data from cosmics with the magnet on.
    • The position of FDC planes need to be carefully determined once it is inserted, since there seems to be some shifts in the z-direction when looked at with cosmics
    • Sean: It would be good to sit down at some point and review which reconstruction/simulation parameters should be in the CCDB and which should be in the libraries