10.43 DSSSD bias +100V leakage current +7.550uA


      + bias - core aida04, braid aida12, LK1 ( HV local ground ) fitted aida03, aida11 *not* aida12
      bias bonds aida01 and aida09 probably broken
      aida03 LK3 ( DSSSD PCB ground ) fitted

      ASIC settings 2021Apr29-13-16-00
      slow comparator 0x64

      FEE64s 1, 3, 9, 10, 11, 12  + input polarity
      FEE64s 2, 4, 6, 8           - input polarity

      BNC PB-5 pulser
      amplitude 1.0V
      attenuation x1
      tail pulse
      tau_d 1ms
      frequency 100Hz
      polarity +

      EG&G Ortec 534 Sum & Invert Amplifier
      to provide - polarity test inputs
      Test + and - signals daisy-chained to FEE64s - end of daisy-chain terminated by 50 Ohms.

      Adaptor PCB

      AIDA Half Rev B 180623 fitted FEE64s 1, 2, 3, 4, 9, 10, 11, 12
      AIDA Half Rev A 120418 fitted FEE64s 6, 8

      AIDA Half rev A adaptor PCBs aida06 & aida08 - not connected to ribbon cable/test/HV
      DSSSD #1 - adaptor PCB ribbon cable drain wires connected to respective adaptor PCB ground
      DSSSD #2 ( not installed ) adaptor PCB ribbon cable and ribbon cable drain wires floating
      AIDA Half rev B adaptor PCBs DSSSD#1 - FEE64 cooling plate - adaptor PCB ground *not* connected
      AIDA Half rev A adaptor PCBs aida06 & aida08 - not connected to ribbon cable/test/HV - FEE64 cooling plate - adaptor PCB ground fitted
      ground to AIDA support frame *not* connected
      test + / test - *not* connected




      per FEE64 1.8.W spectra 20 & 200us FSR - attachments 1-2, 14-15

      per FEE64 p+n junction 1.8.L spectra - attachments 3-4
       aida01 pulser peak width 136 ch FWHM ( note double peaking )

      per FEE64 rate spectra - attachment 5
       no test - input

      adc data item stats - attachment 6
      slow comparator 0x64
       note aida04 asic #1 u/s

      system wide checks - *all* OK - attachments 7-11

      FEE64 temps OK - attachment 12

      DSSSD bias - attachment 13

      adc data item stats - attachment 16
      slow comparator 0x14


12.28 LK1 ( local HV ground ) removed from aida03 & aida11 ( already removed from aida12 )

      adc data item stats
      per FEE64 1.8.W spetcra 20us FSR - attachments 17-19

      DSSSD bias +100V leakage current +6.525uA


14.40 DSSSD bias +100V leakage current +6.230uA

      LK1 ( local HV ground ) installed aida12 *only*

      adc data item stats
      per FEE64 1.8.W spectra 20us FSR
      per p+n FEE64 1.8.L spectra - attachments 20-24
       aida12 pulser peak width 196 ch FWHM



14.40 DSSSD bias +100V leakage current +11.485uA

      LK1 ( local HV ground ) installed aida03, aida11, aida12

      adc data item stats - slow comparator 0x64
      per FEE64 rate spectra
      per FEE64 1.8.W spectra 20us FSR
      per p+n FEE64 1.8.L spectra - attachments 25-30
       aida12 pulser peak width 135 ch FWHM ( note double peaking )


      adc data item stats - slow comparator 0x14
      per FEE64 rate spectra 
       p+n FEE64 rates dominated by edge strips  
      per FEE64 1.8.W spectra 200us FSR
      per p+n FEE64 1.8.L spectra - attachments 31-35



17.15 Test - disconnected from pulser
      Connect test daisy chain cable from aida04 to aida02 (50 OHm termination)

      adc data item stats - slow comparator 0x14 & oxa
      per FEE64 rate spectra - slow comparator 0x14
       p+n FEE64 rates dominated by edge strips  
      per FEE64 1.8.W spectra 200us FSR
      per p+n FEE64 1.8.L spectra - attachments 36-44
       aida01 pulser peak width 89 ch FWHM