09.38 Water flow & temp OK
      Power ON

      All system wide checks OK

      DSSSD HV +120V +5.585uA - attachment 1

      CAEN N1419ET grounded output ( internal LK fitted ) plus ThorLabs inline filter
      standard coaxial cable to aida04, no HV daisy chain aida12, aida03 & aida11
      aida03 LK3 fitted
      aida11, aida03, aida12 LK1 fitted

      test + & test - daisy chains removed

      FEE64 temps OK - attachment 2
      
      slow comparator 0x64
      ADC data item stats - attachment 3

      per FEE64 Rate spectra - attachments 4

      1.8.W spectra - 200us FSR - attachments 5-8



      test + to aida01 *only*

      ADC data item stats - attachment 9
      per FEE64 Rate spectra - attachment 10
      aida01 1*L spectra - attachment 11
       pulser peak width 1.8.L 141 ch FWHM


      ThorLabs inline filter removed
      ADC data item stats - attachment 12
      per FEE64 Rate spectra - attachment 13
       pulser peak width 1.8.L 136 ch FWHM



14.15 DSSSD HV +120V +6.610uA
      Disconnect aida01 ribbon cable drain wire from adaptor PCB gnd
       aida01 1.8.L pulser peak width 188 ch FWHM - amplitude/structure of noise does not change significantly but observe higher frequency components in addition
      1.8.W p+n spectra - 20us FSR - attachment 14


15.20 Switch from HV + to HV - N1419ET ch 3 to ch 2
      HV coaxial cable chain aida12, aida03, aida11, aida04 LK1 fitted 
      aida12, aida03 & aida11 LK1 removed
      Connect aida01 ribbon cable drain wire to adaptor PCB gnd
       
      DSSSD HV-120V -6.720uA - attachment 15
   
      ADC data item stats - attachment 16

       aida01 1.8.L pulser peak width 138 ch FWHM
 
      1.8.W spectra - 20us FSR - attachments 17 & 18

      Little observable difference between HV - and +, as expected

16.20 Jumper aida04 adaptor PCB gnd to aida12 adaptor PCB gnd

      slow comparator 0x64 -> 0xf

      ADC data item stats - attachment 20

      per FEE64 Rate spectra - attachment 21 & 24

      1.8.W spectra - 20us FSR - attachments 22 & 23
    
             aida01 1.8.L pulser peak width 99 ch FWHM


17.00 Ground cable from aida04 gnd to aida12 gnd

      ADC data item stats - attachment 25

      per FEE64 Rate spectra - attachment 26 & 27

      1.8.W spectra - 20us FSR - attachments 28 & 29
    
             aida01 1.8.L pulser peak width 97 ch FWHM


17.20 Ground cable from aida04 gnd to aida12 gnd to aida02 gnd

      slow comparator 0xf ~ 150keV

      ADC data item stats - attachment 30

      per FEE64 Rate spectra - attachment 31

      1.8.W spectra - 20us FSR - attachments 32 & 33
      1.8.W spectra - 200us FSR - attachments 32 & 33
    
             aida01 1.8.L pulser peak width  85 ch FWHM ~  65keV FWHM => 5s threshold 138keV 
             aida12 1.8.L pulser peak width  58 ch FWHM ~  44keV FWHM => 5s threshold  93keV
             aida02 1.8.L pulser peak width 133 ch FWHM ~ 100keV FWHM => 5s threshold 212keV

             Rate spectra are consistent with these estimates, i.e. observe ~zero rate for p+n channels ( except hot channels ) and low ( ~100-200Hz rate per channel ) for n+n channels

     p+n noise aida12, aida03, aida11 excellent
     for aida10, aida01 & aida09 good - can probably be improved to match aida12 etc
     significant improvement observed for n+n side

     aida12 *.*.W spectra - attachments 34-37

     per p+n FEE64 1.8.W spectra - 200us FSR - expanded scale - attachment 38