With Real Detector: The MIP Apollo Go, NCU Taiwan Ped:  ADC cnts MIP: 39.0  12.6 ADC cnts S/N should be better with 3 time samples, better grounding etc. S/N = 5.6 Wire-bonded with the final silicon strip detector (C in ~50pF) Find the MIP using radioactive source (second time sample): Double gaussian fit

With Real Detector: Calibration Apollo Go, NCU Taiwan We use low gain (LG) in the running to reach 400 MIP and high gain (HG) in order to calibrate the MIP. Delta has two circuitry for calibration injections: high precision (HP) and low precision (LP). Two ways to calibrate: HG,HP  HG,LP  LG,LP 1.Input voltage  V correspond to 1 MIP in HG,HP 2.ADC values from  V for 1-15 MIP in HG,HP 3.Average  V in HG,LP from ADC values above. 4.Use this average  V in LG,LP up to 400 MIPs HG,HP  LG,HP  LG,LP  V correspond to 1 MIP in HG,HP 2.ADC values from  V from 1-15 MIP in LG,HP 3.Map these ADC values to LG,LP 4.Find the average  V in LG,LP and extend up to 400 MIPS Notice that only need up to 15 MIPs in HP  boost HP gain in PACE2b

With Real Detector: Calibration Apollo Go, NCU Taiwan Result: Difficult to check which method is better, need powerful infra-red laser to calibrate the calibration at high MIPs!

With Real Detector: Gain & Dynamic Range Apollo Go, NCU Taiwan Knowing the MIP from source, one can inject calibration pulses to get the gain and the dynamic range: Due to injection DAC saturating, not the preamp. Dynamic range > 400 MIP. ADC saturating, not critical Only lower range (015) is used to calibrate the MIP

With Real Detector: Gain & Dynamic Range Apollo Go, NCU Taiwan ADC vs DAC for the four combinations: