HRS Detector Calibrations

• Use ¹²C "white" spectra to get maximum coverage of planes, take 250K events.

Ebeam [GeV]	P0 [GeV/c]	θe [deg]	Collimator	Target	Fast Raster X x Y	Beam Current	Trigger
7.3	3.056	19.0	None	Optics Carbon	1 mm x 1 mm	20μA	S0&&S2m

1. Check the timing and calibration constants (shower ADC gains, pedestals, timing offsets, pulse height corrections, attenuation lengths, efficiencies, position dependencies).
2. VDCs and Straw Chambers (Yang Wang) * Fit for new time-to-distance map * Look at drift time spectra, is the shape reasonable? in the right time range? * Look at focal plane distributions. * Check fiducial tracking efficiency, is it > 95%, If not, then check TDC windows and tracking parameters.