The Honeywell HSS-DPS dew point sensor indicator ( red LED ) is flashing c. 0.5Hz indicating humiidity > 90+/-3 %

Hanna HI9565 report d.p. 8.3 deg C, RH 36%, temperature 25 deg C

S4 area coolant water cntrols indicate water temperature 19 deg C. No evidence of condensation on AIDA coolant manifold.

Sensor fault?

12.50 Power up

      All system wide checks OK

      per FEE64 p+n 1.8.W spectra 20us FSR - attachments 3-4
      per FEE64 p+n 1,8.L spectra - attachment 6
       aida01 pulser peak width 15 ch FWHM
      per FEE64 Rate spectra - attachment 5


      BNC PB-5 pulser
      Amplitude 10.0V
      Attenuation x10
      Decay 1ms
      Frequency 25Hz
      Polarity + ( n+n Ohmic test input from EG&G Ortec 534 Sum & Invert Amplifier not connected )
      Clamp ON

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


      FEE64 temperatures OK - see attachment 1
      ADC data item stats OK - see attachment 2

15.00 DSSSD bias +60V +6.44uA - breakdown above c. 60V, bias +100V leakage current +20-30uA

      Slow comparator 0xa 

      aida03 LK3 fitted

      CAEN N1419ET grounded outputs
      HV#1 core aida04. braid aida10, aida1 & aida 9 

      BNC PB-5 
      Amplitide 10.0V
      Attenuation x10
      Decay time 1ms
      Polarity +
      Tail
      Frequency 25Hz

      test +/ test - daisy chains connected
      test - disconnected at EG&G Ortec 534 output

09.45 Power up

10.15 Bias +60V +5.95uA

10.22 Bias +60V +5.60uA

10.21 Bias +100V +21.1uA unstable

10.27 Bias +80V +10.1uA unstable

10.37 Bias + 60V +5.70uA stable

11.02 Bias +60V +5.78uA stable

11.22 CAEN N1419ET floating output ( internal LK removed )
      Bias +100V +6.35uA

11.26 Bias +100V +10.59uA slowly increasing

11.39 Bias +100V +10.39uA unstable

      Slow comparator 0x64 observe high ADC data item stats for aida10 & aida12 - attachment 1 - expected rate 25Hz x 64 = 1600 - problem with this wafer and/or adaptor PCBs?  
      N.B. aida04 asic #1 is u/s and running at very high rates 
      N.B. rates in aida10 & aida12 dominated by a few hot channels ( not the usual suspects ) - attachment 2

12.00 Bias +100V +13.0uA unstable

12.20 Bias +100V 12.535uA unstable

pi@raspberrypi:~ $ cat ./caen_screen.sh
if ! screen -list | grep -q "caenhv"; then
	screen -f -S caenhv /dev/ttyACM0 9600
else
	screen -x caenhv
fi


pi@raspberrypi:~ $ cat ./check_usbs.sh
#!/bin/bash

declare -A NAMEMAP


NAMEMAP[FTDI_Chipi-X_FT2LC9OO]="BNC PB-5 Pulser"
NAMEMAP[CAEN_SPA_NIM_Desktop_HV_Power_Supply]="CAEN HV Supply"
NAMEMAP[FTDI_USB__-__Serial]="CAEN NIM Crate"
NAMEMAP[FTDI_FT232R_USB_UART_A502KOX3]="AIDA PSU Relay"

#for sysdevpath in $(find /sys/bus/usb/devices/usb*/ -name dev); do     (         syspath="${sysdevpath%/dev}";         devname="$(udevadm info -q name -p $syspath)";         [[ "$devname" == "bus/"* ]] && exit;         eval "$(udevadm info -q property --export -p $syspath)";         [[ -z "$ID_SERIAL" ]] && exit;         echo "/dev/$devname - $ID_SERIAL";     ); done


for sysdevpath in $(find /sys/bus/usb/devices/usb*/ -name dev); do (
	syspath="${sysdevpath%/dev}"
	devname="$(udevadm info -q name -p $syspath)"
	[[ "$devname" == "bus/"* ]] && exit
	[[ "$devname" != *"tty"* ]] && exit
	eval "$(udevadm info -q property --export -p $syspath)"
	[[ -z "$ID_SERIAL" ]] && exit
	echo "/dev/$devname - $ID_SERIAL - ${NAMEMAP[$ID_SERIAL]}" )
done

12.22 USB-controlled ac mains relay - interlock overidden
      Water flow OK. Water temp 19 deg C OK.
      Power on.

      aida03 LK3 fitted

      test + chaine to all p+n FEE64s
      test - disconnected at EG&G Ortec 534 output and aida04 n+n FEE64 adaptor card

      CAEN N1419ET floating output
      Bias chain braid - aida11, aida03 & aida12, core aida04
      Bias +60V +5.28uA stable - attachment 1

      FEE64 temps OK - attachment 2

      1.8.W spectra - 200us FSR - attachments 3 & 4
      per FEE64 p+n 1.8.L spectra - attachment 5
       aida01 pulser peak width 240 ch FWHM

      Slow comparator 0x64

      per FEE64 Rate spectra - attachment 6
       p+n rates dominated by hot channels
      ADC data item stats - attachment 7

12.58 Bias +100V +6.075uA stable - attachment 8

     1.8.W spectra - 200us FSR - attachments 9 & 10
      per FEE64 p+n 1.8.L spectra - attachment 11
       aida01 pulser peak width 116 ch FWHM

      Slow comparator 0x64

      per FEE64 Rate spectra - attachment 12
       n+n rates dominated by hot channels, no p+n hot channels
      ADC data item stats - attachment 13

     1.8.W spectra - 20us FSR - attachments 14 & 15

     1.8.W spectra - 2ms FSR - attachments 16-19

     Observe 100kHz extrinsic noise with 5kHz modulation

13.22 Bias +100V +5.995uA stable - attachment 20

13.36 Bias +100V +6.040uA stable - attachment 25

     per FEE64 Rate spectra - attachment 21
       n+n rates dominated by hot channels, no p+n hot channels
      ADC data item stats - attachment 22

     slow comparator 0x64 -> 0xf

     per FEE64 Rate spectra - attachment 23
     ADC data item stats - attachment 24

13.36 Bias +110V +6.175uA stable - attachment 30

     slow comparator 0xf -> 0x64

     1.8.W spectra - 2ms FSR - attachments 26 & 27

     per FEE64 Rate spectra - attachment 29
      aida02, aida04 & aida10 rates dominated by hot channels
     ADC data item stats - attachment 28

13.36 Bias +120V +6.295uA stable - attachment 36

     slow comparator 0x64

     1.8.W spectra - 2ms FSR - attachments 33 & 34

     per FEE64 p+n 1.8.L spectra - attachment 31
      aida01 pulser peak width 120 ch FWHM

     per FEE64 Rate spectra - attachment 32
      aida02, aida04 & aida10 rates dominated by hot channels

     ADC data item stats - attachment 35


15.07 aida03 LK1 fitted
      Bias +60V +5.600uA stable
      Bias +100V +6.260uA stabl

      slow comparator 0x64

      1.8.W spectra - 2ms FSR - attachments 37 & 38

      per FEE64 p+n 1.8.L spectra - attachment 40
       aida01 pulser peak width 115 ch FWHM

      per FEE64 Rate spectra - attachment 39
       aida02, aida04 & aida10 rates dominated by hot channels

      ADC data item stats - attachment 41

      DSSSD HV - attachment 42




    per FEE64 Rate spectra - attachment 39
       aida02, aida04 & aida10 rates dominated by hot channels

      ADC data item stats - attachment 41



      


      
      

Slow comparator 0xf

DSSSD HV +120V +6.400uA - attachment 3

per FEE64 Rate spectra - attachment 1
ADC data item stats - attachment 2

test + disconnected at start of chain aida10, aida1 ... aida12

ADC data item stats - attachment 4
per FEE64 Rate spectra - attachment 5

No difference observed

DSSSD HV +130V +6.455uA - attachment 7
DSSSD HV +160V +6.605uA - attachment 6

per FEE64 1.8.W spectra - 2ms FSR - attachments 8 & 9
per FEE64 Rate spectra - attachments 10 & 11
ADC data item stats - attachment 12

Depletion+30V bias = 160V - no change to n+n noise, increased noise more generally


17.30 power off, HV off
      test + daisy chain removed from aida10, aida01 ... aida12
      power on
      slow comparator 0x64

      DSSSD bias +120V +6.455uA - attachment 13

      ADC data item stats - attachment 14

      per FEE64 Rate spectra - attachments 15 & 16
  
      1.8.W spectra - 20us & 200us FSR - attachments 17 & 18

      extrinsic noise worse but restricyted to a few hot channels
      
      slow comparator 0xf
      per FEE64 Rate spectra - attachment 19


18.40 DSSD HV to aida04 ( standard coaxial cable ), N1419ET floating output
      HV chain aida12, auda03, aida11 
      aida03 LK1 and LK3 fitted
      slow comparator 0x64

      DSSSD bias +120V +6.435uA - attachment 20
      ADC data item stats - attachment 21

      per FEE64 Rate spectra - attachments 22-24

      1.8.W spectra - 200us FSR - attcahments 25 & 26

       extrinsic noise worse esp. n+n Ohmic side
       p+n rates dominated by hot channels

09.55 Water pressure and temp OK
      Power on

      All system wide checks OK

      DSSSD HV +120V +5.600uA - attachment 1

      CAEN N1419ET floating output
      standard coaxial cable to aida04, HV daisy chain aida12, aida03 & aida11
      aida03 LK1 & LK3 fitted

      test + & - daisy chains removed

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

      per FEE64 Rate spectra - attachments 4-6

      1.8.W spectra - 20us & 200us FSR - attachments 7-10


11.00 CAEN N1419ET floating -> gnd output ( via internal LK )
      standard coaxial cable to aida04
      aida03 LK1 & LK3 fitted

      test + daisy chain removed, test - daisy chain aida02 - aida04

      DSSSD HV +120V +5.955uA - attachment 11

      slow comparator 0x64
      ADC data item stats - attachment 12

      per FEE64 Rate spectra - attachments 13 & 14

      1.8.W spectra - 200us FSR - attachments 15 & 16

      Overall, significant improvement in extrinsic noise for both p+n and n+n sides


      slow comparator 0xf
      ADC data item stats - attachment 17

      per FEE64 Rate spectra - attachment 18




11.50 LK1 fitted to aida12, aida03 & aida11

      DSSSD HV +120V +6.030uA - attachment 19

      slow comparator 0xf
      ADC data item stats - attachment 20

      1.8.W spectra - 200us FSR - attachments 21 & 22

      Incremental improvement in extrinsic noise for both p+n and n+n sides


12.20 LK1 fitted to aida12, aida03 & aida11, HV daisy chain aida12, aida03 & aida11 removed

      DSSSD HV +120V +6.125uA - attachment 23

      slow comparator 0xf
      ADC data item stats - attachment 24

      1.8.W spectra - 200us FSR - attachments 25 & 26

      Little observable difference

12.40 test - daisy chain removed

      slow comparator 0xf
      ADC data item stats - attachment 29

      per FEE64 Rate spectra - attachments 30 & 31

      1.8.W spectra - 200us FSR - attachments 32 & 33

      Further improvement in extrinsic noise observed for both p+n and n+n sides

14.00 additional ThorLab inline filter added to HV coaxial to aida04

      DSSSD HV +120V +6.505uA - attachment 34

      slow comparator 0xf
      ADC data item stats - attachment 35

      per FEE64 Rate spectra - attachments 36

      1.8.W spectra - 200us FSR - attachments 37 & 38

      Little observable difference

14.15 DSSSD HV +140V +6.685uA - attachment 39
      1.8.W spectra - 200us FSR - attachment 40

      DSSSD HV +160V +6.765uA - attachment 41
      1.8.W spectra - 200us FSR - attachment 42

      additional detector HV to dep+30V ( 160V ) mkaes little difference to n+n noise



14.45 per FEE64 4.*.W spectra - 200us FSR
      n+n aida02 aida04 - attachments 43 & 44
      p+n aida10, aida01, aida09 - attachments 45-47
      p+n aida12, aida03, aida11 - attachments 48-50

      aida09 missing strips? cable?
      aida10 large transients for edge strips

15.20 aida10 LK4 ( front f/p -> gnd ) fitted - investigate impact aida10 asic #4 edge channels
      DSSSSD HV bias +100V >+50uA
       breakdown MGR & Front F/P?
       wafer?
       cabling?

      aida10 LK4 removed
      DSSSD HV +120V +6.760uA stable - attachment 1

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

10.00 Water flow & temp OK
      Power ON

      All system wide checks OK

      CAEN N1419ET ch 2 - all outputs non-floating ( internal LK fitted )
      Standard coaxial HV cable chained to aida12, aida03 & aida11
      aida04 LK1 ( local gnd ) fitted

      ground cable from aida04 adaptor PCB ground to aida12 to aida02

      aida03 LK3 ( PCB gnd ) fitted

      BNC PB-5 
      amplitude 10.0V
      attenuation x10
      decay time 1ms
      polarity -
      frequency 25Hz

      test + cable and test + chain removed
      test - direct from PB-5 to aida02 *only*

      DSSSD bias -120V -6.105uA - attachment 1

      FEE64 tempweratures OK - attachment 2

      slow comparator 0x64

      ADC data item stats - attachment 3
      Note 
       aida04 asic #1 u/s
        ASIC mezzanine to be replaced
       aida10 asic #4 v. high rates observed
        see https://elog.ph.ed.ac.uk/AIDA/901 attachment 45
        ASIC/cable/wafer issue ?

      rate ~ 1600Hz observed for aida02 - pulser
      All other rates 0Hz

      per FEE64 Rate spectra - attachment 4

      aida02 1.8.L pulser peak width 137 ch FWHM


      1.8.W spetcra 20us, 200us & 2ms FSR - attachments 5-10


      slow comparator 0x64 -> 0xf 

      ADC data item stats - attachment 11
      per FEE64 Rate spectra - attachments 12 & 13
       p+n rates entirely dominated by hot channels, otherwise rates ~0Hz
       n+n rates ~ 200-300Hz/channel

      slow comparator 0xf -> 0xa

      ADC data item stats - attachment 14
      per FEE64 Rate spectra - attachments 15-17
       p+n rates aida12, aida03 & aida11 entirely dominated by hot channels, otherwise rates ~0Hz
       p+n rates aida10, aida01 & aida09 ~500-1000Hz/channel
       n+n rates ~ 2000-3000Hz/channel

11.25 Extend HV chain from aida11 to aida09

      ADC data item stats - attachment 18
       significant decrease in aida09 rate

      1.8.W spectra 2ms FSR - attachments 19 & 20
       significant improvement in aida09 1.8.W noise

      aida02 1.8.L pulser peak width 165 ch FWHM ( slow comparator 0xa ), 127 ch FWHM ( 0xf )


12.00 Extend HV chain from aida09 to aida01 & aida10

      slow comparator 0xf

      ADC data item stats - attachment 21

      per FEE64 Rate spectra - attachment 22

      1.8.W spectra 2ms FSR - attachments 23-26
       significant improvement in aida01 & aida10 1.8.W noise

      aida02 1.8.L pulser peak width 127 ch FWHM ( 0xf )


12.35 slow comparator 0xf
      
      ADC data item stats - attachment 27
      per FEE64 Rate spectra - attachment 28




      slow comparator 0xa
      
      ADC data item stats - attachment 29
      per FEE64 Rate spectra - attachment 30



      slow comparator 0x9
      
      ADC data item stats - attachment 31
      per FEE64 Rate spectra - attachment 32 & 33



      slow comparator 0x8
      
      ADC data item stats - attachment 34
      per FEE64 Rate spectra - attachment 35



      slow comparator 0x7
      
      ADC data item stats - attachment 36
      per FEE64 Rate spectra - attachment 37



      slow comparator 0x6
      
      ADC data item stats - attachment 38
      per FEE64 Rate spectra - attachment 39



      slow comparator 0x5
      
      ADC data item stats - attachment 40
      per FEE64 Rate spectra - attachment 41



16.55 Background alpha 3*L & 3*W ( 20us FSR ) spectra - attachments 42 & 43
      Slow comparator 0xf
      Waveform threshold 7000 ( - polarity ), 9000 ( + polarity )

17.00 DSSSD bias -120V -7.125uA - attachment 44

      aida02 1.8.L ( n+n Ohmic side strip ) pulser peak width as function of DSSSD bias 

      Bias I_l    FWHM  Centroid
      (V)  (uA)   (ch)  (ch)
      -120 -7.125 124.8 43090
      -140 -7.230 124.5 43092
      -160 -7.370 120.2 43093
      -180 -7.570 120.0 43095
      -100 -7.020 143.8 43089
       -80 -6.820 continuum/no peak
      -150 -7.300 122.6 43093


      DSSSD bias -150V -7.280uA

      aida02 *.*.L spectra - attachments 45-48
      All channels have similar pulser peak widths to 1.8.L
 








      

      CAEN N1419ET ch 2 - all outputs non-floating ( internal LK fitted )
      Standard coaxial HV cable chained to aida12, aida03, aida11, aida09, aida01 & aida10
      aida04 LK1 ( local gnd ) fitted

      ground cable from aida04 adaptor PCB ground to aida12 to aida02

      aida03 LK3 ( PCB gnd ) fitted

      BNC PB-5 
      amplitude 10.0V
      attenuation x10
      decay time 1ms
      polarity +
      frequency 25Hz


      test + direct from PB-5 to aida12 *only*

      slow comparator 0xf

      DSSSD bias -150V -7.280uA

      aida12 1.8.L pulser peak width 55 ch FWHM

      aida12 *.*.L spectra - attachments 1-4
      All channels have similar pulser peak widths to 1.8.L *except* 1.1.L, 1.4.L, 4.7.L & 4.13.L ( hot channels ) and 2.2.L, 2.9.L & 2.12.L no pulser peak



      test + direct from PB-5 to aida01 *only*

      aida01 1.8.L pulser peak width 70 ch FWHM

      aida01 *.*.L spectra - attachments 5-8
      All channels have similar pulser peak widths to 1.8.L *except* 1.1.L, 1.4.L, 4.7.L & 4.13.L ( hot channels )


      per FEE64 1.8.W spectra - 20us FSR - attachments 9-12
      per FEE64 1.8.W spectra - 200us FSR - attachments 13 & 14

10.10 Water flow & temp OK
      Power ON

      All system wide checks OK


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

      BNC PB-5
      amplitude 10.0V
      attenuation x10
      tail pulse
      decay time 1ms
      frequency 25Hz
      polarity -

      PB-5 output direct to aida01 *only*

      CAEN N1419ET non-floating outputs ( internal LK fitted )
      ch2 - polarity

      HV cable - standard coaxial cable to aida12 chained to aida03, aida11, aida09, aida01 & aida10
      aida04 LK1 ( local gnd ) fitted
      ground cable from aida04 adaptor PCB gnd to aida12 & aida02
      aida03 LK3 fitted ( DSSSD PCB gnd )

      DSSSD bias -150V -6.300uA - attachment 1
      FEE64 temps OK - attachment 2
      ADC data item stats - attachment 3
       
      per FEE64 Rate spectra - attachment 4
       ignore aida06 & adida08 - not connected to anything
       ignore known issue of high rates aida04 asic #1 and aida10 asic #4 - remediable

      aida01 1.8.L pulser peak width 75 ch FWHM ( 53keV FWHM )

      1.8.W spectra - 20us FSR - attachments 5 & 6


10.35 slow comparator 0x64 -> 0xa ( all p+n junction FEE64s ) and 0xf ( all n+n Ohmic FEE64s )

      ADC data item stats - attachment 7
       
      per FEE64 Rate spectra - attachment 8-10

      p+n rates dominated by hot channels - most p+n channels < 1Hz/channel
      n+n rates c. 50Hz/channel 



      per p+n FEE64 1.8.W spectra - 20us, 200us & 2ms FSR - attachments 11-13
      per n+n FEE64 1.8.W spectra - 20us, 200us & 2ms FSR - attachments 14-16



12.10 HV cable - standard coaxial cable to aida12 chained to aida03 & aida11
      chain ( Lemo-00 cables ) adaptor PCB gnd from aida09 to aida01 & aida10 

      DSSSD bias -150V -6.535uA - attachment 17
      ADC data item stats - attachment 18
       
      per FEE64 Rate spectra - attachment 19-21

      aida01 1.8.L pulser peak width 78 ch FWHM ( 55keV FWHM )

      1.8.W spectra - 20us FSR - attachments 22 & 23



12.40 HV cable - standard coaxial cable to aida12 chained to aida03 & aida11
      chain ( Lemo-00 cables ) adaptor PCB gnd from aida09 to aida01 & aida10
      ground cable from aida04 adaptor PCB gnd to aida12, aida02 & aida09

      DSSSD bias -150V -6.535uA - attachment 24
      ADC data item stats - attachment 25
       
      per FEE64 Rate spectra - attachment 26-28

      aida01 1.8.L pulser peak width 61 ch FWHM ( 42keV FWHM )

      1.8.W spectra - 20us FSR - attachments 29-32


      aida01 *.*.L spectra - attachments 33-36
       common x & y scales - pulser peak height proxy for peak width
      aida01 3.*.W spectra - 20us FSR - attachments 37-39


     per p+n FEE64 1.8.W spectra - 20us, 200us, 2ms & 20ms - attachments 40-47

      ASIC settings 2021Apr29-13-16-00
      slow comparator 0xa ( all p+n junction FEE64s ) and 0xf ( all n+n Ohmic FEE64s )

      BNC PB-5
      amplitude 10.0V
      attenuation x10
      tail pulse
      decay time 1ms
      frequency 25Hz
      polarity -

      PB-5 output direct to aida02 *only*

      CAEN N1419ET non-floating outputs ( internal LK fitted )
      ch2 - polarity

      HV cable - standard coaxial cable to aida12 chained to aida03 & aida11
      chain ( Lemo-00 cables ) adaptor PCB gnd from aida09 to aida01 & aida10
      ground cable from aida04 adaptor PCB gnd to aida12, aida02 & aida09
      aida04 LK1 ( local gnd ) fitted
      aida03 LK3 fitted ( DSSSD PCB gnd )

      DSSSD bias -150V -6.510uA - attachment 1
      ADC data item stats - attachment 2
       p+n rates dominated by hot channels - most p+n channels < 1Hz/channel
       n+n rates c. 10Hz/channel 
       
      per FEE64 Rate spectra - attachment 3-5

      aida02 1.8.L pulser peak width 102 ch FWHM ( 70 keV FWHM )

      aida02 *.*.L spectra - attachments 6-9
       common x & y scales for all spectra - peak height proxy for peak width
       all channels have similar pulser peak widths 

      aida02 3.*.W spectra - 20us, 200us, 2ms & 20ms FSR - attachments 10-17


      per p+n FEE64 1.8.W spectra - 20us, 200us, 2ms & 20ms FSR - attachments 18-25

      per n+n FEE64 1.8.W spectra - 20us, 200us, 2ms & 20ms FSR - attachments 26-33


      DSSSD bias -150V -6.510uA - attachment 34
      ADC data item stats - attachment 35
       p+n rates dominated by hot channels - most p+n channels < 1Hz/channel
       n+n rates c. 10Hz/channel 
       
      per FEE64 Rate spectra - attachment 36-38

      aida12 1.8.L pulser peak width 56 ch FWHM ( 39keV FWHM )

      aida12 *.*.L spectra - attachments 39-42
       common x & y scales for all spectra - peak height proxy for peak width
       60 channels have similar pulser peak widths
       4 channels show peak widths c. 2x larger ( 'hot' channels )

      aida12 3.*.W spectra - 20us, 200us, 2ms & 20ms FSR - attachments 43-50

start 14.55

15.06 Quick test of AIDA 24cm x 8cm 'triple' DSSSD before dismounting to install 1x bPlast detector downstream of the DSSSD

      Water flow, pressure and temperature OK

      Power Up OK

      All system wide checks OK

      DSSSD bias -150V leakage current -5.29uA 

      ASIC settings 2021Apr29-13-16-00
      FEE64s re-configured to aida01 - aida08 by NH
      aida02, aida04 negative input, all other FEE64s positive input
      Currently unable to specify settings directory for Options so aida06 & auida08 are still defined as negative input FEE64s - need to change ASIC settings manually

      slow comparator p+n FEE64s 0x64->0xa, n+n FEE64s 0x64->0xf

      per FEE64 Rate spectra - attachment 1
      ADC data item stats OK - attachment 2
      p+n FEE64 rates dominated by 'hot' channels, other channels < 1Hz
      n+n FEE64 rates ~ 10Hz 
      Known issues with aida04 asic #1 and aida10 ( now aida06 asic # 4 ) remain to addressed/investigated

      No chnages in performance cf. https://elog.ph.ed.ac.uk/AIDA/906 & https://elog.ph.ed.ac.uk/AIDA/907


     

Attempting to change the text string specifying the ASIC settings directory ( 2023Nov14-15.25.24 ) in Options produces an error - see attachments 1 & 2

System aida-gsi, anydesk 246 067 683

11.36 Water flow, pressure & temperature ( 19 deg C ) OK

      Power ON


      Detector configuration - installed yesterday pm

      Extant ( May 2022 campaign ) snout
      1x MSL type BB18(DS)-1000 24cm x 8cm 'triple' DSSSD
      1x ( downstream ) bPlast

      2x additional Al foil sheets over end cap to ensure light tight ( zero dark current ) for bPlast
      Dark current c 0.4uA measured for extant 2x Al foil sheets only


      FEE64 configuration - aida01 - aida08
      aida02 & aida04 n+n Ohmic strips, other FEE64s p+n junction strips
      NH re-named FEE64s using dhcpd.conf - *no* changes to AIDA PSU cabling to FEE64s 


      All system wide checks OK

      DSSSD bias -150V leakage current -5.140uA - attachment 1
      FEE64 temps OK - attachment 2


      ASIC settings 2021Apr29-13-16-00
      Manually change ASIC settings aida06 & aida08 from - to + input

      BNC PB-5 pulser to aida08
      settings?

      Slow comparator 0x64 all FEE64s
      ADC data item stats - attachment 3

      Increased rates and noise cf yesterday's test https://elog.ph.ed.ac.uk/AIDA/916
      See attachments 4-9
      Per FEE64 Rate spectra
      Per FEE64 1.8.L spectra
      Per FEE64 1.8.W spectra - 20us FSR

12.10 Disconnected power cables(?) from 3x bPlast cards around AIDA snout 
      1x card hanging to side of snout - aida04 side, 2x resting on top of AIDA snout ( inserted 2 sheets folded A4 paper between AIDA snout and PCBs )

      Per FEE64 1.8.W spectra - 20us FSR - attachments 10 & 11
      Per FEE64 Rate spectra - attachment 12
      Significant improvement observed


      Slow comparators 0xa p+n FEE64s, 0xf n+n FEE64s
      pwer FEE64 1.8.W spectra - 20us FSR - attachments 13-15
      ADC data item stats  - attachment 16
      per FEE64 Rate spectra - attachments 17 & 18


14.16 Removed bPlast cards from around snout - small improvment ADC stats
      Attachments 19-22


15.10 aida01 FEE64 adaptor PCB re-seated ( c. 1 pin row out of position )

      ASIC data item stats - attachment 23
      Significant improvement which approaches previous noise performance


      CC now assembling bPlast adaptor cards on a standoff Minitek frame
      HA/IK have confirmed that bPlast cables are screened on one side only - CC demonstrated that surfaces of both sides of the bPlast cabling are non-conductive


      Once assembled ( cards + power cables + input cables to bPlast detector ), observed increased noise similar to that observed this am


      Attempt to return to status quo ante did not reduce noise but observed problems with aida01 ( asics #3 & #4 did not load ) - attachment 24
      An unusual error message - power cycled and rebooted FEE64s

      Slow comparator 0x64
      ADC data item stats - attachment 27

     Slow comparators 0xa p+n FEE64s, 0xf n+n FEE64s
     ADC data item stats  - attachments 26
     per FEE64 Rate spectra - attachment 25


     This appears to have ( largely ) restored status quo ante. Large number of hot channels but other typically close to previously observed rates.