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Here is the trending of calibGenCal outputs for the 3 CU CAL modules. Three time phases are included: NRL (pre-CU) and Pisa (2 phases). The 3 files are FM109, FM119and FM101. Asymmetry amplitudes are VERY stable while slight variations are observed for pedestal position (up to ~10 ADC units, ~5 ADC units in average) and MeV/DAC (up to ~4%, ~1.5% in average), due to the change of power supply in Pisa.
Trending CPTs
Here is the trending of the 3 CU CAL module performances from CPTs taken at Pisa (2 suites) and at CERN (PS and SPS). The 3 files are FM109-Pisa-PS-SPS, T02-FM119-Pisa-PS-SPSand T03-FM101-Pisa-PS-SPS for all time phases, and FM109-PS-SPS, T02-FM119-PS-SPSand T03-FM101-PS-SPS for the CERN phases only. Performances are found to be VERY stable at CERN, with slight differences wrt Pisa phases (for instance LE+/LE- diode ratio variation up to ~5%, ~2% in average), again due to the change of power supply.
Here are the same plots for PS, SPS and GSI phases: FM109-PS-SPS-GSI, T02-FM119-PS-SPS-GSIand T03-FM101-PS-SPS-GSI. No change was found.
Gain intercalibration procedure at SPS
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In conclusion, only R_1/R_2 (LEX1/HEX8) slopes for tower 1 were propagated in the DB by modifying the HEX8 MeV/DAC (see below).
Update of CAL calibration constants in DB (Aug 7th) pdf resumé
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