Tests with the HV supply (CAEN N1419ET) and Pulse Generator ( BNC PB-5 ) in the detector lab on the crate behind the DEGAS detectors, carried out the 9th August 2023

Both modules were plugged

Test 1: pulse generetor on 2 Hz

- DC, 50 ohm - HV OFF - attachment 1

- DC, 50 ohm - HV OFF, Zoom on the noise - attachment 2

- DC, 50 ohm - HV 50 V, Zoom on the noise - attachment 3

Test 2: HV supply Channel 1 - CORE and 2 - BRAID, pulse generator still on

- AC 1 Mohm - HV OFF - attachment 4

- AC 1 Mohm - HV 50 V - attachment 5

No differences were observed between crate OFF, HV OFF and HV 50 V. An important periodic noise (green on the pictures) was observed and was significantly smaller when unpluging the HV module from the crate. The thickness of the baseline noise seems to be comparable to entry 882, attachment 33-35.

10.45 Power cycle and reboot

     DSSSD bias +100V leakage current +8.365uA

     All system wide checks OK

     Slow comparator 0x64

     per FEE64 rate spectra - attachment 1
     per FEE764 1.8.W spectra - attachments 16 & 17 ( ignore attachments 2 & 3 - bias off/low )
     adc data item stats - attachment 4


     slow comparator 0xf

     per FEE64 rate spectra - attachment 5
     adc data item stats - attachment 6


     slow comparator 0xe

     per FEE64 rate spectra
     adc data item stats - attachment 7


     slow comparator 0xd

     per FEE64 rate spectra - attachment 8
     adc data item stats - attachment 9


     slow comparator 0xc

     per FEE64 rate spectra - attachment 10
     adc data item stats - attachment 11

     slow comparator 0xb

     per FEE64 rate spectra - attachment 12
     adc data item stats - attachment 13


     slow comparator 0xa

     per FEE64 rate spectra - attachment 14
     adc data item stats - attachment 15

07.00 DAQ stopped
      Overnight run for background alphas

10.07 FEE64 temperatures OK - attachment 1
      DSSSD bias +100V leakage current +8.210uA - attachment 2

      Stats - attachments 3-12


     per FEE64 1.8.W spectra 200us FSR - attachments 21-22
     per FEE64 rate spectra - attachment 23

15.16 DSSSD bias +100V leakage current +8.415uA

      ThorLabs filters removed
      Test + & test - signals disconnected at outputs of BNC PB-5 and EG&G Ortec 534

      aida02 & aida04 LK1 installed, aida01 LK3 not installed
      aida03 LK3 installed

      test + & test- daisy chains installed

      HV daisy chain - core -  aida12, aida03, aida11
      HV daisy chain - braid - aida04


      slow comparator 0xa     p+n FEE64 rates high ( 50-125k ) 

      per FEE64 rates - attachment 1
      per FEE64 1.8.W spectra 200us FSR - attachments 2-3
      adc data item stats - attachment 4


      slow comparator 0xc    p+n FEE64 rates OK ( 15-40k ) dominated by 'hot' channels, low per channel rates in aida11, aida03, aida12

      per FEE64 rates - attachment 5-6
      adc data item stats - attachment 7


      slow comparator 0xf    p+n FEE64 rates low ( 7-17k ) entirely dominated by 'hot' channels

      per FEE64 rates - attachment 8
      adc data item stats - attachment 9


      slow comparator 0x14    

      per FEE64 rates - attachment 10-11
      adc data item stats - attachment 12


      slow comparator 0x19    

      per FEE64 rates - attachment 13
      adc data item stats - attachment 14


      slow comparator 0x1e    

      per FEE64 rates - attachment 15
      adc data item stats - attachment 16

      slow comparator 0x23    

      per FEE64 rates - attachment 17
      adc data item stats - attachment 18


     slow comparator 0x28    

      per FEE64 rates - attachment 19-20
      adc data item stats - aattachment 21


      Ignoring 'hot' channels, reduce rates to < 50Hz/channel for p+n slow comparator threshold 120-150keV and n+n slow comparator threshold 350-400keV 
      If we assume that this estimates the 5x sigma threshold => p+n sigma c. 27keV rms, 64keV FWHM and n+n sigma c. 75keV rms, 176keV FWHM

      Given FEE64-DSSSD cable lengths, optimal p+n performance is c. 40-50keV FWHM so current tests begin to approach this - little extrinsic noise observed for preamp signals
      We continue to observe significant ( though very much improved ) extrinsic noise for n+n strips so current noise performance could be improved by x2-3.



18.42 slow comparator 0x64
      stats & histograms zero'd

      DSSSD bias +100V leakage current +9.040uA

10.20 DSSSD bias +100V leakage current +6.565uA - attachment 1

      All system wide checks OK - attachments 2-7
       why is SYNC rollover target 0xe?

      FEE64 temps OK - attachment 8

      per FEE64 1.8.W spectra 20us FSR - attachments 9-10
      slow comparator 0x64
      per FEE64 rate spectra - attachment 11
      ADC data item stats - attachment 12

      slow compararator 0x14
      ADC data item stats - attachment 13



11.10 Test + & test - cables disconnected at the outputs of the BNC PB-5 and EG&G Ortec 534


      slow comparator 0xf                      p+n rates dominated by 'hot' channels *except* aida03 & aida09
      per FEE64 rate spectra - attachment 14
      ADC data item stats - attachment 15

      slow comparator 0xa                      p+n rates high ( 100-200k )
      per FEE64 rate spectra - attachment 16
      ADC data item stats - attachment 17


      slow comparator 0x14                      p+n rates entirely due to 'hot' channels
      per FEE64 rate spectra - attachment 18
      per FEE64 1.8.W spectra 20us FSR - attachments 19-20
      ADC data item stats - attachment 21


11.27 Remove ground cable from Al base plate to aida02 FEE64 adaptor PCB

      slow comparator 0xf                      p+n rates entirely due to 'hot' channels
      per FEE64 1.8.W spectra 20us FSR - attachments 22-23
      per FEE64 rate spectra - attachment 25
      ADC data item stats - attachment 24


      slow comparator 0xa                      p+n rates high ( 30-130k ) but lower than previously
      per FEE64 rate spectra - attachment 26
      ADC data item stats - attachment 27

11.48 DSSSD bias +100V leakage current +7.845uA

      Remove LK3 ( local HV ground middle Si wafer )

      slow comparator 0xa                      p+n rates high ( 55-135k ) but increase in rates appears to be due to 'hot' channels
      per FEE64 1.8.W spectra 20us FSR - attachments 28-30
      per FEE64 rate spectra - attachment 31
      ADC data item stats - attachment 32



      CAEN N1419ET ch #2 output connected to Tek TDS 210 DSO - powered from relay #6

      ch 1 - ac - HV braid
      ch 2 - ac - HV core

      ch # 2 OFF - attachment 33
      ch # 2 + 50V 0.000uA - attachments 34-35

      with additional ThorLabs filter
      ch # 2 + 50V 0.000uA - attachment 39


      ch 2 - dc, hi Z

      test -    attachments 36-37
      test +    attachment 38

12.45 Install ThorLabs filter HV core ( *no* filter for HV braid )

      slow comparator 0xa             p+n rates high ( 40-130k ) but p+n rates dominated by 'hot' channels *except* aida03, aida11, aida12 where rates are generally higher per strip
      per FEE64 rate spectra - attachment 40
      per FEE64 1.8.W spectra 20us FSR - attachments 41-42
      ADC data item stats - attachment 43
      


14.55 Install ThorLabs filter HV braid ( filters for both HV core & braid )

      slow comparator 0xa            p+n rates high ( 50-150k ) two filters probably somewhat worse than one filter
      per FEE64 rate spectra - attachment 46
      per FEE64 1.8.W spectra 20us FSR - attachments 44-45
      ADC data item stats - attachment 47


      Overall, effect of ThorLabs filters appears to belimited. Perhaps not unexpected as FEE64 adaptor PCBs also have a HV RC filter. 


      

16.22 Add LK1 to aida01
      DSSSD bias -100V leakage current -7.950uA

     Slow comparator 0x14
      per FEE64 1.8.W spectra 200us FSR - attachments 2-3
      ADC data item stats - attachment 4
      per FEE64 rate spectra - attachment 1

      Noise worse for n+n FEE64s esp. aida04

17.28 Ground Al base plate to aida02 FEE64 adaptor PCB - appears to be marginally worse than without ground

      per p+n FEE64 1.8.L spectra - attachments 8-9
       aida01 pulser peak width 116 ch FWHM
      per FEE64 1.8.W spectra 200us FSR - attachments 10-11
      per FEE64 rate spectra - attachment 6-7
      ADC data item stats - attachment 5

09.40 Al snout electrically connected ( < 1 Ohm ) to Al gasket and Al base plate
      Al snout electrically isolated ( > 20 MOhm ) from aida02 FEE64 adaptor PCB and AIDA support frame

      FEE64 temperatures OK - attachment 1
      DSSSD bias +100V leakage current +7.565uA - attachment 2

      All system wide checks OK

      Slow comparator 0x64
      per FEE64 rate spectra - attachment 3
      per p+n FEE64 1.8.L spectra - attachments 4-5
       aida01 pulser peak width 134 ch FWHM
      per FEE64 1.8.W spectra 200us FSR - attachments 6-7
      ADC data item stats - attachment 8

      Slow comparator 0x14
      ADC data item stats - attachment 9
      per FEE64 rate spectra - attachment 10




      Ground Al base plate to aida02 FEE64 adaptor PCB - appears to be marginally worse than without ground

      per p+n FEE64 1.8.L spectra - attachments 11-12
       aida01 pulser peak width 120 ch FWHM
      per FEE64 1.8.W spectra 200us FSR - attachments 13-14
      per FEE64 rate spectra - attachment 15
      ADC data item stats - attachment 16


11.48 DSSSD bias +100V leakage current +11.055uA

      Ground Al base plate to AIDA support frame - appears to be significantly worse than without ground

      per FEE64 1.8.W spectra 200us FSR - attachments 17-18
      per p+n FEE64 1.8.L spectra - attachments 19-20
       aida01 pulser peak width 150 ch FWHM
      per FEE64 rate spectra - attachment 21
      ADC data item stats - attachment 22


11.48 DSSSD bias +130V leakage current +35.05uA

      Ground Al base plate to aida02 FEE64 adaptor PCB - additional bias makes no significant difference

      per FEE64 rate spectra - attachment 23
      per p+n FEE64 1.8.L spectra - attachments 24-25
       aida01 pulser peak width 118 ch FWHM
      per FEE64 1.8.W spectra 200us FSR - attachments 26-27
      ADC data item stats - attachment 28



14.03 DSSSD bias +100V leakage current +10.7uA
      Ground Al base plate to aida02 FEE64 adaptor PCB - re-check
      per FEE64 1.8.W spectra 200us FSR - attachments 28-29
      ADC data item stats - attachment 30




15.10 Add DSSSD HV cable from aida04 to aida02 - significantly worse
      Ground Al base plate to aida02 FEE64 adaptor PCB - re-check
      per FEE64 1.8.W spectra 200us FSR - attachments 31-32
      ADC data item stats - attachment 33




15.37 Switch from - to + polarity detector HV
      N1419ET from ch #3 to ch #2, all outputs non-floating
      LK1 ( local HV ground )removed from aida12, aida03, aida11 - installed aida04 
      LK3 ( DSSSD PCB ground ) installed aida03 ( no change )
      HV #1 core aida12, aida03, aida11 - braid aida04
      test + chain aida9, aida01, aida10, aida12, aida03, aida11 - connected to BNC PB-5 pulser
      test - chain aida04, aida02 - not connected to pulser

      AIDA PSU cabling per https://elog.ph.ed.ac.uk/AIDA/879
      HV cable aida04 to aida02 - removed
      Ground Al base plate to aida02 FEE64 adaptor PCB - removed

      FEE64 temperatures OK - attachment 35
      DSSSD bias -100V leakage current -7.155uA - attachment 36

      Slow comparator 0x14
      per FEE64 rate spectra - attachment 37
      per p+n FEE64 1.8.L spectra - attachments 38-39
       aida01 pulser peak width 123 ch FWHM but note double peaking
      per FEE64 1.8.W spectra 200us FSR - attachments 40-41
      ADC data item stats - attachment 42
      Slow comparator 0x64
      ADC data item stats - attachment 43

      Very similar performance to + polarity DSSSD HV tests

      
16.05 Add LK1 to aida02
      DSSSD bias -100V leakage current -7.770uA

      Slow comparator 0x14
      per FEE64 1.8.W spectra 200us FSR - attachments 44-46
      ADC data item stats - attachment 47
      per FEE64 rate spectra - attachment 48

      Improved noise for n+n FEE64s esp. aida04

09.50 DSSSD bias +100V leakage current +9.255uA - attachment 2

      FEE64 temperatures OK - attachment 1

      All system wide checks OK

      per FEE64 1.8.W spectra 20 & 200us FSR - attachments 3-6

      per p+n FEE64 1.8.L spectra - attachments 7-8
       aida01 pulser peak width 87 ch FWHM

      adc data item stats - slow comparator 0x64, 0x14, 0xa - attachments 15, 14, 11
      per FEE64 rate spectra - attachments 9-10, 12-13


from https://elog.ph.ed.ac.uk/AIDA/872

13x FEE64s installed - see attachment 2 ( courtesy NH )

FEE64 #    Cable set #
1          1
2          2
3          3
4          4
5
6          6
7
8          8
9          9
10         5
11         11
12         7
15          

Change AIDA PSU cabling from

#1 1-3 2-4 5-6 7-8
#2 9-10 11-12 13-14 15-16

to

#1 1-3 2-4 5-7 9-11
#2 6-8 10-12 13-14 15-16

     DSSSD bias +100V leakage current +11.765uA

     per FEE64 1.8.W spectra 200us FSR - attachments 16-17

      per p+n FEE64 1.8.L spectra - attachments 18-19
       aida01 pulser peak width 158 ch FWHM ( note double peaking )

      adc data item stats - slow comparator 0x64, 0x14 - attachments 23, 21
      per FEE64 rate spectra - attachments 20, 22


     DSSSD bias +30V leakage current +35.8uA





13.35 DSSSD bias +100V leakage current +11.785uA

      aida04 34-way cable #1 connected to ASIC #1 & 2 disconnected from adaptor PCB

      per FEE64 1.8.W spectra 2000us FSR - attachments 26-27

      adc data item stats - slow comparator 0x64, 0x14 - attachments 29-30
      per FEE64 rate spectra - attachment 28


16.20 Install LK2 & LK4 aida12, aida03, aida11 ( front & rear field plate ground )

      DSSSD over current ( 200uA @ c. 30V ) - high resistance short?

      LK2 & LK4 installed aida12 *only* - OvC
      LK2 & LK4 installed aida11 *only* - OvC
      LK2 & LK4 installed aida3 *only* - OvC

      LK2 installed aida3 *only* - OvC ( LK2 = rear field plate )

      All front & rear field plate connections appear to provide a high resistance short to ground for detector bias. This may be related to issues observed biasing DSSSD via aida01 & aida09 - https://elog.ph.ed.ac.uk/AIDA/874
      But why does it affect aida12 too?

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




     

09.54 DSSSD#1 bias +100V leakage current +9.065uA

      ADC data item stats
      per FEE64 1.8.W spectra 20us & 200us FSR - see attachments 1-5


10.02 aida04 asic#1 u/s - see attachments 6-7

10.39 AIDA PSU#1 FEE64s 1,2 3, 4, 5, 6, 7, 8 -> 1, 3, 2, 4, 5, 6, 7, 8

      
      ADC data item stats ( slow comparator 0x64 & 0x14 )
      per FEE64 1.8.W spectra 20us & 200us FSR - see attachments 8-12

11.08 Test + connected aida09, 01, 10, 12, 3 & 11
      SSSD#1 bias +100V leakage current +12.150uA

      ADC data item stats ( slow comparator 0x14 )
      per FEE64 rate, 1.8.L & 1.8.W spectra 20us FSR - see attachments 13-18
      aida01 pulser peak width 134 ch FWHM

Options and system cosnole disagree about which version of the DataAcq program is in use?

09.50 Cooknell HV2
      2x + polarity, grounded HV channels

      + bias - core aida04, braid aida12, LK1 ( HV local ground ) fitted aida12, aida03, aida11
      bias bonds aida01 and aida09 probably broken
      aida03 LK3 ( DSSSD PCB ground ) fitted

      
      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
      

      DSSSD#1 3208-3/-21/-22
      bias +100V leakage current +8.7uA - attachments 1-11
      per FEE64 1.8.W spectra 20us & 200us FSR


09.58 + bias - core aida04, braid aida12, LK1 ( HV local ground ) *not* fitted aida12 & fitted aida03, aida11
      see attachments 12-14

17.00 aida04 *only* adaptor PCB connected to AIDA support frame
      FEE64 ADC data item stats > 200k for all FEE64s 


17.45 FEE64 spower cycled
      CAEN N1419ET 
      Internal LK installed - all outputs grounded
      bias +100V leakage current +12.2uA - attachments 15-19
      + bias - core aida04, braid aida12, LK1 ( HV local ground ) *not* fitted aida12 & fitted aida03, aida11

09.20 CAEN N1419ET 
      Floating outputs
      Channel #3 + polarity, Channels #0-2 - polarity
      Channel #3 - HV cable #1

      + bias - core aida04, braid aida12, LK1 ( HV local ground ) fitted aida12, aida03, aida11
      bias bonds aida01 and aida09 probably broken
      aida03 LK3 ( DSSSD PCB ground ) fitted

      
      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
      

      DSSSD#1 3208-3/-21/-22
      bias +120V leakage current +17.13uA - attachments 1-14
      per FEE64 1.8.W spectra - 200us FSR - attachments 1-2
      per FEE64 1.8.W spectra - 20us FSR - attachments 3-4

      bias +100V leakage current +8.35uA - attachments 15-17
      per FEE64 1.8.W spectra - 200us FSR

      bias +0V leakage current +0uA - attachments 18-20
      per FEE64 1.8.W spectra - 200us FSR



14.25 bias +100V leakage current +10.83uA - attachments 21-22
      per FEE64 1.8.W spectra - 200us FSR
      CAEN channel #3 cable moved from cable tray to floor

14.50 bias +100V leakage current +11.15uA - attachments 23-24
      per FEE64 1.8.W spectra - 200us FSR
      CAEN N1419ET moved to Weiner NIM bin LHS 19" rack channel #3 cable across floor to AIDA stand
      HV cables channels #0-2 disconnected

15.20 All ERNI pins of aida01 adaptor PCB OK => FEE64 #1 ASIC #2 channel #5 issue faulty test C? faulty ASIC channel?

      Fitted drain wire from aida06 & aida08 adaptor PCBs to FEE64 cooling plates

      n+n FEE64 1.8.W spectra 20us FSR - attachments 1-2

      p+n FEE64 1.8.W spectra 20us FSR - attachments 3

      p+n FEE64 1.8.L spectra - attachment 4
       aida01 1.8.L pulser peak width 15 ch FWHM

      n+n FEE64 1.8.L spectra - attachment 5
       double peak spectra

      Significant improvement in noise for aida06 & aida08 but still not as good as aida02 & aida04. Some additional extrinsic noise observed for aida02 & aida04.

      No change in 1.8.L spectra

      n+n FEE64 1.8.W spectra aida02 200us FSR, other FEE64s 20us FSR - attachments 6
       baseline sinusoid observed - 4T = 320 samples = 64us = 15.6kHz

15:50 BNC PB-5
      switch polarity + to -
      switch BNC cables from BNC PB-5 and EG&G Ortec 534 outputs for test +/-

      Attachments 7-8
       baseline sinusoid observed for p+n *not* n+n FEE64 1.8.W spectra
       suggests issue is EG&G Ortec 534

      Restore original cabling



16.55 Swap aida09 HDMI cable from MACB #4 port 1 to MACB #5 port 1 - power cycle and restart - no change - aida09 clock not locked

      Replace aida09 HDMI with *new* HDMI cable to MACB # 4 port 1 - power cycle and restart - aida09 clock locked


      FEE64 temperatures OK - attachment 9

      System wide checks - attachments 10-15
      OK *except* cannot calibrate aida12 ADCs

      per FEE64 rate spectra - attachment 16

      p+n FEE64 1.8.L spectra - attachments 17
       aida01 1.8.L pulser peak width 15 ch FWHM

      n+n FEE64 1.8.L spectra - attachments 18
       double peak spectra

      p+n FEE64 1.8.W spectra 20us FSR - attachments 19-20

      n+n FEE64 1.8.W spectra 20us FSR - attachments 21-22


17.10 n+n FEE64 1.8.W spectra 200us FSR
       BNC PB-5 decay time 50us - attachment 23
       BNC PB-5 decay time 1ms - attachment 24


18.05 ADC data item stats

      slow comparator 0x64 -> 0xa
      BNC PB-5 pulser frequency 100Hz so expect rate of ADC data items per FEE64 to be c. 6.4kHz
  
      attachment 25 - aida06 & aida08 ground from FEE64 cooling plate to adaptor PCB fitted, test - connected to aida02, aida04, aida06 & aida08
      attachment 26 - aida06 & aida08 ground from FEE64 cooling plate to adaptor PCB fitted, test - disconnected from aida02, aida04, aida06 & aida08
      attachment 27 - aida06 & aida08 ground from FEE64 cooling plate to adaptor PCB not fitted, test - disconnected from aida02, aida04, aida06 & aida08

      Rev A adaptors require grounding (as expected). Output of EG&G Ortec 534 produces c. 15kHz sinsusoid at test input - cable length/capacitative load?
      
      

Saturday 15 July

Cooling water ON - temperature c. +19 deg C ( controls adjacent to S4 entrance )
Flow taps ON ( S4 )
Cannot see float in mechanical flow gauge - sediment?
USB-controlled ac mains relay flow interlock ON.
Flow vibration can be felt in cooling manifold and lines. 


13x FEE64s installed - see attachment 2 ( courtesy NH )

FEE64 #    Cable set #
1          1
2          2
3          3
4          4
5
6          6
7
8          8
9          9
10         5
11         11
12         7
15          



10x FEE64s configured - update /MIDAS/config/TclHttpd/aidas-gsi@8015/startup.tcl - see attachment 1

ttyUSB1 aida01
ttyUSB3 aida12
ttyUSB4 aida02
ttyUSB6 aida03
ttyUSB7 aida04
ttyUSB9 aida11
ttyUSB10 aida09
ttyUSB12 aida10
ttyUSB13 aida08
ttyUSB15 aida06


Update /etc/dhcp/dhcpd.conf - correct MAC address aida09

from 

   host aida09 {
     hardware ethernet d8:80:39:41:ee:01;
     fixed-address 192.168.11.9;
    option root-path "/home/Embedded/XilinxLinux/ppc_4xx/rfs/aida09";
   }

to

   host aida09 {
     hardware ethernet d8:80:39:41:ee:10;
     fixed-address 192.168.11.9;
    option root-path "/home/Embedded/XilinxLinux/ppc_4xx/rfs/aida09";
   }

5x MACBs installed - see attachment 3
Note configuration setting 0x0 for all 5x MACBs ( cf. 0x3 per https://elog.ph.ed.ac.uk/DESPEC/517 )


17.30 System wide checks - see attachments 4-7
      OK *except* aida09 clock and WR decoder errors
      FEE64 temperatures OK - see attachment 8






Sunday 16 July

11.30 Restart

      FEE64 temperatures OK - attachment 9
      System wide checks - attachments 10-15
      aida09 clock errors - no WR timestamp
      aida09 WR status 0xd - attachments 16-18

      Local controls aida01 cf. aida09 - attachments 19-20
      status register 0xf cf. 0x4
      BuTIS interface control 0x3 cf. 0x0


14.00 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
       *all* LKs fitted
      AIDA Half Rev A 120418 fitted FEE64s 6, 8
       *no* LKs fitted

      No drain wire connections from adaptor PCB to FEE64 cooling plate fitted



      per FEE64 rate spectra - attachment 21

      p+n FEE64 1.8.L spectra - attachments 22-23
       aida01 1.8.L pulser peak width 15 ch FWHM

      n+n FEE64 1.8.L spectra - attachments 24-25
       double peak spectra

      p+n FEE64 1.8.W spectra 20us FSR - attachments 26-28

      n+n FEE64 1.8.W spectra 20us FSR - attachments 29-31

      Observe significantly higher noise for rev A adaptors
      No data observed for aida09
      aida01 2.5.* data missing
      

      FEE64 statistics aida01, aida09, good events, ADC data, pause, resume, disc, correlation & WR 48-63 - attachments 32-40

Test of AIDA FEE64s 

ISOL test station STFC DL, T9

Pulser BNC PB-5

Amplitude 1.0V
Attenuation x1
Polarity +
Frequency 100Hz
Tail pulse, decay time 1ms
Delay 250ns (min)

ASIC settings 2019May22-10.19.28
Slow comparator 0x80

Adaptor PCB - PJCS


FEE64 temperatures OK
System wide checks OK
Statistics OK

Hit/HitRate spectra OK

LEC spectra OK
Data observed for all channels of all ASIC #1-4
Pulser peak widths *.8.L

Wave spectra OK
Data observed for all channels of all ASIC #1-4


Date/time          FEE64 MAC           Pulser peak width   Status
                                       (channels FWHM)
6.7.23 17:50       d8:80:39:41:d8:2a   17,17,16,15         OK
6.7.23 11:20       d8:80:39:41:b4:0b   7,7,7,7             OK
6.7.23 10:03       d8:80:39:41:d0:0e   12,12,12,12         OK
5.7.23 15.31       d8:80:39:41:d7:cc   6,6,6,6             OK
5.7.23 14:04       d8:80:39:41:a0:71   12,11,11,12         OK           Rate/Hitrate, *.*.L and *.*.W spectra - attachments 1-10
5.7.23 13:18       d8:80:39:42:0d:16   13,15,14,14         OK
5.7.23 12:43       d8:80:39:41:ee:71   17,17,15,16         OK

6.7.23 11:00       d8:80:39:42:0d:0b   17,15,16,15         https://elog.ph.ed.ac.uk/AIDA/870  Mezzanine replaced - ASIC #2 address bit #2 always on? ASIC #2 fail or mezzanine-FEE64 
connection 
issue?
7.7.23 09:46       d8:80:39:41:f6:ee                       https://elog.ph.ed.ac.uk/AIDA/869  HDMI replaced - not fully assembled - LEC fast comparator ASIC #1 channel #2 missing. ADC 
does not 
calibrate. HDMI issue?


OK FEE64s - attachment 11

Test of AIDA FEE64 d8:80:39:42:0d:0b ( aida03 ) - ASIC mezzanine replaced

ISOL test station STFC DL, T9

Pulser BNC PB-5

Amplitude 1.0V
Attenuation x1
Polarity +
Frequency 100Hz
Tail pulse, decay time 1ms
Delay 250ns (min)

ASIC settings 2019May22-10.19.28
Slow comparator 0x80

Adaptor PCB - PJCS


FEE64 temperatures OK - attachments 1


System wide checks OK - attachments 2-5


Statistics OK - attachments 6-7

Hit/HitRate spectra OK - attachment 8

LEC spectra - attachments 9-12

Data observed for all channels of ASIC #1, 3, & 4
Data observed (double peaks) ASIC#2 channels 4-7 & 12-15, no data observed channels 0-3 & 8-11 - ASIC#2 address bit #2 set always ON? ASIC #2 fail or Mezzanine-FEE64 
connection issue?
Typical pulser peak widths 15-17 channels FWHM ASIC #1-4


Wave spectra OK - attachments 13-16

19/7/23 removed mezzanine and cleaned contacts with ipa. cleaned FEE contacts. reassembled mezzanine to FEE and tested. ASIC 2 now ok.

Test of AIDA FEE64 d8:80:39:41:f6:ee ( aida01 ) - HDMI connector replaced. Cooling plate fitted - no base plate.
ISOL test station STFC DL, T9

Pulser BNC PB-5

Amplitude 0.5V
Attenuation x1
Polarity +
Frequency 100Hz
Tail pulse, decay time 1ms
Delay 250ns (min)

ASIC settings 2019May22-10.19.28 - attachment 1
Slow comparator 0x80

Options - attachment 2

Adaptor PCB - PJCS


FEE64 temperatures OK - attachments 3


System wide checks - attachments 4-9

FEE64 module aida01 global clocks failed, 6
 Clock status test result: Passed 3, Failed 1

FEE64 module aida01 failed
Calibration test result: Passed 3, Failed 1

Timestamp RAM values OK?


Statistics OK - attachments 10-11

Good WAVE events reported?


LEC spectra - attachments 12-15

Data observed for all channels of all ASICs - double peaking observed - may be due to incomplete FEE64 assembly? See attachment 17


Hit/HitRate spectra - attachment 16

OK *except*
1.2.L fast comparator missing
no WAVE data

Unable to start Rly16 server - see attachment 1

Added 16.10 6 July 2023

CU No /dev/ttyUSB* on Raspberry Pi

Re-seated USB cable at Raspberry Pi and USB-controlled ac mains relay, power cycled Raspberry Pi - return to normal operation.

I have taken videos with an Infrared camera of the power being supplied to one isolated ASIC on a mezzanine.

The power supply is a bench supply with current limit set to 3A.

The centre of the ASIC glowed white hot for a short time and then the whole ASIC shows as hot. Ths the short is on the ASIC and not the bond wires IMO.

I am unable to globally publish the videos at present as I only have a private google drive account.

Please contact Tom Davinson for further details.