HT of upstream AIDA from iseg, HT cable shielded, 100V, 17 uA. HT of downstream AIDA from CAEN, AIDA#0. Both channel 0 and 1 of CAEN are on, even though there is just one channel connected. DEGAS platform closed. The crates of BB7 and bplast have been put to the ground of the AIDA's structure (cupper sheet)

Attachment 1: TEST1: BB7 fully connected = 2 tiles of BB7 have been connected to the mesytec preamps. BB7 is not biased. The mesytec preamps have been fully connected and supplied but 6/8 black cables are not connected on the other side. 4X and 4Y are connected to the 2 FEBEX cards. The cables of BB7 right between the snout and the preamps are shielded.

AIDA05.1.8L --> FWHM 76-80 channels

Attachment 2: TEST2: BB7 fully disconnected

AIDA05.1.8L --> FWHM 71 channels

Attachment 3: TEST3: BB7 fully disconnected, TAMEX crate unbiased, BB7 NIM crate turned off

AIDA05.1.8L --> FWHM 67 channels

Attachment 4: AIDA01.1.0 --> FWHM 171 channels --> same detector, also biased with iseg but bad results

HT cable shielded, HT of upstream AIDA from iseg, HT of downstream AIDA from CAEN. Both channel 0 and 1 of CAEN are on, even though there is just one channel connected. During this test, some parallele tests are being done on BB7 Mesytec. In general, middle tile: detector disconnected from preamps but preamps connected on the other side.  Right tile: detector connected to preamps, cable shielded but preamps disconnected on the other side (supplied, one output is plugged). Those conditions may have changed during the test. The BB7 and bplast crates are also being connected to the cupper sheet of AIDA's structure to be grounded, the carton pieces under the crates have been removed.

AIDA05 connected, HT 0V

Attachment 1: AIDA05.1.8L --> FWHM 1907 channels

Attachment 2: AIDA09.1.9L --> FWHM 1467 channels

AIDA05 connected, HT 100V

Attachment 3: AIDA05.1.8L --> FWHM 74 channels

Attachment 4: AIDA09.1.8L --> FWHM 79 channels

Attachment 5: AIDA13.1.8L --> FWHM 250 channels

AIDA05 disconnected, HT 0V (cable between the detector and the adaptor board)

Attachment 6: AIDA05.1.8L --> FWHM 16 channels

AIDA05 disconnected, HT 100V

Attachment 7: AIDA05.1.8L --> FWHM 16 channels

Attachment 8: AIDA09.1.8L --> FWHM 87 channels

Attachment 9: AIDA13.1.8L --> FWHM 234 channels

Attachment 10: AIDA12.1.8L --> FWHM 116 channels (bplast cable side disconnected) to be compared to 117 channels (screenshot forgotten to be saved but tags left 21600 and 21171) --> no effect

BB7 is still connected but not biased (same configuration as the previous elog). The channel of the CAEN power supply #0 is connected to ASIC08 and biased at 100V. The channel of the CAEN power supply #1 is disconnected but still biased at 100V. AIDA04 (chained to AIDA05) is biased via an unshielded cable to an iseg NHQ 246L power supplied, biased at 100 V with 15 uA.

All the outside drain wires of bplast are now taped to the snout.

The red markers of the cursors of the previous test have been left for ease of comparison.

Attachment 1: AIDA05.1.8L --> FWHM 67 channels

Attachment 2: AIDA05.1.1L --> FWHM 69 channels

Attachment 3: AIDA05.1.4L --> FWHM 79 channels

Attachment 4: AIDA05.1.12L --> FWHM 79 channels

Attachment 5: AIDA05.1.15L --> FWHM 79 channels

Attachment 6: AIDA13.1.8L --> FWHM 236 channels, chosen because same place than AIDA05 but for the dowstream detector that is still biased with the CAEN module

Attachment 7: AIDA12.1.8L --> FWHM 91 channels, chosen because same place than AIDA05 but of the bottom of upstream detector that is still biased with the iseg module

Attachment 8: AIDA16.1.8L --> FWHM 143 channels, chosen because same place than AIDA05 of the bottom of dowstream detector that is still biased with the CAEN module. This curve has 2 humps

BB7 is still connected but not biased (same configuration as the previous elog). The channel of the CAEN power supply #0 is connected to ASIC08 and biased at 100V. The channel of the CAEN power supply #1 is disconnected but still biased at 100V. AIDA04 (chained to AIDA05) is biased via a shielded cable to an iseg NHQ 246L power supplied, biased at 101 V with 16 uA.

All the outside drain wires of bplast are now taped to the snout.

Attachment 1: AIDA05.1.8L --> FWHM 60 channels

Attachment 2: AIDA05.1.1L --> FWHM 51 channels

Attachment 3: AIDA05.1.4L --> FWHM 57 channels

Attachment 4: AIDA05.1.12L --> FWHM 65 channels

Attachment 5: AIDA05.1.15L --> FWHM 69 channels

Attachment 6: AIDA13.1.8L --> FWHM 277 channels, chosen because same place than AIDA05 but for the dowstream detector that is still biased with the CAEN module

Attachment 7: AIDA12.1.8L --> FWHM 88 channels, chosen because same place than AIDA05 but of the bottom of upstream detector that is still biased with the iseg module

Attachment 8: AIDA16.1.8L --> FWHM 133 channels, chosen because same place than AIDA05 of the bottom of dowstream detector that is still biased with the CAEN module. This curve has 2 humps

Attachment1: AIDA05.1.8L when AIDA05 connected, biased at 101 V with shielded cables. BB7 is still connected but not biased (same configuration as the previous elog). The channel of the CAEN power supply #0 is connected to ASIC08 and biased at 100V. The channel of the CAEN power supply #1 is disconnected but still biased at 100V. AIDA04 (chained to AIDA05) is biased via a shielded cable to an iseg NHQ 246L power supplied, biased at 101 V with 16 uA.

All the outside drain wires of bplast are now taped to the snout.

The red markers of the cursors of the previous test have been left for ease of comparison.

FWHM: 21699-21644 = 55 channels (to be compared with the previous elogs between 73 channels and 79 channels)

Conclusion: a significant improvement can be observed with a cleaner power supply.

Attachment1: AIDA05.1.8L when AIDA05 connected, biased at 100 V with not-shielded cables, after the DEGAS platform has been closed, the 2 tiles of BB7 have been connected to the mesytec preamps. BB7 is not biased. The mesytec preamps have been fully connected and supplied but 6/8 black cables are not connected on the other side. 4X and 4Y are connected to the 2 FEBEX cards.

The 2 drain wires of bplast that were hanging on the bottom are now taped to the snout, not making any antena effect anymore.

FWHM: 79 channels (to be compared with the previous elogs between 73 channels and 76 channels)

Conclusion: no significant differences can be observed when BB7 is connected. The tail on the left side of the spectrum in twice as small, most likely because on the now-taped drain wires of bplast

Attachment1: AIDA05.1.8L when AIDA05 connected, biased at 100 V with not-shielded cables, CAEN HT,  after the base of the snout (screws) has been connected to the ground via cupper sheets

FWHM: 76 channels (to be compared with the 2 previous elogs 73 channels and 75 channels)

Conclusion: no differences can be observed.

Biased at 100, AIDA05 connected, HT cables not shielded CAEN HT

Attachment 1: AIDA05.1.8L --> FWHM 75 channels

Attachment 2: AIDA05.1.1L --> FWHM 70 channels; peak of the pulser shifted to the right (red lines on the left: cursor for the 1.8L)

Attachment 3: AIDA05.1.4L --> FWHM 85 channels; peak of the pulser completely shifted to the left (10 000 on the left)

Attachment 4: AIDA05.1.12L --> FWHM 78 channels

Attachment 5: AIDA05.1.15L --> FWHM 79 channels, peak the most shifted to the right of the 5 curves tested

This elog is the first reliable. Before, the histograms have not been zero'd

Each test are done and compared for AIDA05.1.8L, compared with the pulser (caracteristics, see attachment1)

Test 1: with HT cables shielded

Attachment 2: HT = 100V; cable AIDA05 connected --> FWHM = 77 channels (= 51.3 keV) with a top of the curve at 100 cts (AIDA9.1.8L has also been checked and was at 89 channels)

Attachment 3: HT = 0V; cable AIDA05 connected --> FWHM = 1757 channels with a top of the curve at 15 cts after almost 40 min because the noise had a baseline of 6500 channels

Attachment 4: HT = 0V; cable AIDA05 disconnected --> FWHM = 16 channels with a top of the curve at 110 cts

Attachment 5: HT = 100V; cable AIDA05 disconnected --> FWHM = 17 channels with a top of the curve at 110 cts

Test 2: with HT cables not shielded

Attachment 6: HT = 0V; cable AIDA05 connected --> FWHM = 1452 channels (968 keV) with a top of the curve at 23 cts after 1:15 hours because the noise had a baseline of 7000 channels

Attachment 7: HT = 100V; cable AIDA05 connected --> FWHM = 73 channels with a top of the curve at 100 cts

Attachment 8: HT = 0V; cable AIDA05 disconnected --> FWHM = 15 channels with a top of the curve at 120 cts

Attachment 9: HT = 100V; cable AIDA05 disconnected --> FWHM = 16 channels with a top of the curve at 125 cts

Conclusion: with shielded or unshielded cables, the noise situation seems to be the same, proving that mot of the noise don't come from the cables

Other thing that have been noticed is that the peak of the pulser is shifted when the cables are connected compared to when they are not connected: connected: peak at around channel 21675; disconnected: peak at around channel 21925

AIDA05 completely disconnected, all the others FEEs64 are fully connected

Attachment 1: aida05, FWHM= 95 ch, 63 keV

Attachment 2: aida15, FWHM= 108 ch, 74 keV

Test with shielded HV cables for both detectors.

The FWHM for ch1 is now 184 ch.

Yesterday cables for cards 5, 6, 10, 11, 12, 14, 16 were partially connected (only 1 out of 2 flat cables was in), now both are connected.

Status before grounding checks

11.45 DSSSD bias & leakage current - attachment 1
      FEE64 temps OK - attachment 2
      All system wide checks OK *except* WR decoder status aida02 - attachment 3
      WR timestamps OK - attachment 4
      ADC data item stats - attachment 5

      per FEE64 Rate spectra - attachments 6-7
       note ASICs with per channel rates of 22Hz (pulser)
       note *all* FEE64 slow comparator 0x64
       note ignore aida10 - connected to MSL type BB7 - not biased yet

      per p+n FEE64 1.8.L spectra - attachment 8-9
       pulser peak widths
        aida05, aida14, aida16 c. 15-20 ch FWHM ( c. 10-15keV FWHM ) - cable from DSSSD not connected to adaptor PCB
        aida15 c. 137 ch FWHM - electronic noise c. 2x worse than configuration used for 2023/4 tests

      per p+n FEE64 1.8.W spectra - 20us FSR - attachments 10
      per p+n FEE64 1.8.W spectra - 20us FSR - expanded y-scale = 2000 x 122uV/LSB = 0.244V FSR - attachment 11

      per n+n FEE64 1.8.W spectra - 20us FSR - attachments 12


15.20 Data suggests 2x (of 6x) Si wafers are not biased - aida11 & aida05-aida12 - J2 cable disconnected

      Switch from negative to positive bias polarity

      CAEN N1419ET channels 1 and 2 switched from negative to positive polarity
      Note internal LK fitted - HV outputs *not* floating

      Channel 1 -> DSSSD#0 from aida12 to aida04 (HV daisy chain aida12-aida03-aida15 *not* removed)
      Channel 2 -> DSSSD#1 from aida16 to aida08 (HV daisy chain aida16-aida07-aida11 *not* removed)

      LK1 removed from adaptor PCBs for aida02. aida04, aida06, aaida08

      LK1 fitted aida05, aida13, aida10, aida09, aida15, aida11

      LK3 *no* change

      DSSSD bias & leakage current - attachment 13
       note increase in leakage current for DSSSD#0 but not DSSSD#1
       - indicating DSSSD#0 has all Si wafers biased
       - all wafers of DSSSD#1 not biased => damaged adaptor PCB and/or cabling, misaligned ribbon cable/Kapton PCB connection within snout
      FEE64 temps OK - attachment 14
      ADC data item stats - attachment 15

      per FEE64 Rate spectra - attachments 16-17
       note ASICs with per channel rates of 22Hz (pulser)
       note *all* FEE64 slow comparator 0x64
       note ignore aida10 - connected to MSL type BB7 - not biased yet

      per p+n FEE64 1.8.L spectra - attachment 18-19
       pulser peak widths
        aida05, aida14, aida16 c. 15-20 ch FWHM ( c. 10-15keV FWHM ) - cable from DSSSD not connected to adaptor PCB
        aida15 c. 108 ch FWHM - electronic noise c. 2x worse than configuration used for 2023/4 tests

      per p+n FEE64 1.8.W spectra - 20us FSR - attachments 20
      per p+n FEE64 1.8.W spectra - 20us FSR - expanded y-scale = 2000 x 122uV/LSB = 0.244V FSR - attachment 21

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


16.40 Add LK1 to aida03, aida07

      DSSSD bias & leakage current - attachment 23
       no change

      ADC data item stats - attachment 24

      per p+n FEE64 1.8.L spectra - attachment 25-26
       pulser peak widths
        aida05, aida14, aida16 c. 15-20 ch FWHM ( c. 10-15keV FWHM ) - cable from DSSSD not connected to adaptor PCB
        aida15 c. 117 ch FWHM - electronic noise c. 2x worse than configuration used for 2023/4 tests

      per p+n FEE64 1.8.W spectra - 20us FSR - attachments 27
       no change

16.50 Increase DSSSD#0 bias from +100V to +120V

      DSSSD bias & leakage current - attachment 28

      per p+n FEE64 1.8.L spectra - attachment 29-30
       pulser peak widths
        aida05, aida14, aida16 c. 15-20 ch FWHM ( c. 10-15keV FWHM ) - cable from DSSSD not connected to adaptor PCB
        aida15 c. 70 ch FWHM - electronic noise c. 1.2-2x worse than configuration used for 2023/4 tests

      per FEE64 Rate spectra - attachments 31-32

      per FEE64 1.8.W spectra - 20us FSR - attachments 33-36
       aida02 & aida04 stabilised but still very noisy

      Switch BNC PB-5 Pulser polarity + to - and connect test- test daisy chain

      ADC data item stats - attachment 37

      per FEE64 Rate spectra - attachments 38-39
       aida02 & aida04 rates significantly lower but not 25Hz expected

      per n+n FEE64 1.8.L spectra - attachment 40
       pulser peak width aida02 c. 700 ch FWHM - very noisy!

      per n+n FEE64 1.8.W spectra 20us FSR - attachment 41 

*** Summary

    DSSSD#0
    3x Si wafers biased OK
    p+n junction side electronic noise c. 1.2-2x 2023/4 configuration
    n+n Ohmic side very noisy - increased detector HV to stabilise => increased capacitative load cf. 2023/4 configuration?

    DSSSD#1
    2x Si wafers biased OK, 1x probably not biased
    p+n junction side electronic noise > 4x 2023/4 configuration
    n+n Ohmic side very noisy/unstable - increased detector HV not attempted due to issues with biasing all 3x Si wafers

    MSL type BB7 
    not biased yet

    To Do
    Complete connection and grounding of Bplas detectors

12.21 BNC PB-5 settings
      Amplitude 1.0V
      Attenuator x1
      Frequency 22Hz
      Polarity +
      Tau_d 1ms
      Tail pulse
      Clamp ON
      Pulser output connected to p+n test daisy chain - n+n test daisy chain not connected 

      per DSSSD green/yellow ground daisy chain was removed yesterday

      FEE64 adaptor PCB grounds connected by heavy duty braid wrapped in copper foil to AIDA support assembly frame
      Snout connected to AIDA support assembly frame by heavy duty braid bolted to frame and connected to snout by adhesive copper foil.

      DSSSD - FEE64 adaptor PCB cabling (cannot connect some ribbon cables because cable flipped and connector key now incorrectly oriented)

                    aida10 aida14 aida13
                      ox     xo     oo
                    aida09 aida01 aida05
                      oo     oo     xo
      aida06 aida02                      aida04 aida08    *Beam into screen*
        ox     oo                          oo     oo
                    aida15 aida03 aida12
                      oo     oo     ox
                    aida11 aida07 aida16 
                      ox     oo     xo

      o = connected
      x = not connected
      e.g. J1 J2 connected = oo, J1 only connected = ox

      Adaptor PCB top/component side
      E     J1
      R
      N
      I     J2

      Adaptor PCB 
       LK1 fitted aida02, aida04, aida06, aida08
       LK3 fitted aida03, aida07

      DSSSD bias & leakage current - attachment 1
      FEE64 temps OK - attachment 2
      All system wide checks OK *except* WR decoder status aida02 - attachment 3
      WR timestamps OK - attachment 4
      ADC data item stats - attachment 5

      per FEE64 Rate spectra - attachments 6-7
       note ASICs with per channel rates of 22Hz (pulser)
       note *all* FEE64 slow comparator 0x64 ( *note* subsequently found ASIC #2-4 of a number of FEE64s were set to 0x0 )

      per p+n FEE64 1.8.W spectra - 20us, 200us, 2ms and 20ms FSR - attachments 8-11
      per p+n FEE64 1.8.W spectra - 20ms FSR - expanded y-scale = 2000 x 122uV/LSB = 0.244V FSR - attachment 12

      per n+n FEE64 1.8.W spectra - 20ms, 2ms, 200us and 20us FSR - attachments 13-16

      per p+n FEE64 1.8.L spectra - attachment 17
       pulser peak widths
        aida05, aida14, aida16 c. 15-20 ch FWHM ( c. 10-15keV FWHM ) - cable from DSSSD not connected to adaptor PCB
        aida09 c. 120 ch FWHM - electronic noise c. 2x worse than configuration used for 2023/4 tests
        all other FEE64s *very* noisy/unstable


14.45 Found some FEE64s with slow comparator 0x64 for ASIC#1 and 0x0 for ASICs #2-4
      Slow comparator 0x64 now set for all ASICs of all FEE64s

      ASIC settings saved to 2025Jun14-15.00.09

      ADC data item stats - attachment 18

      per FEE64 Rate spectra - attachments 19-20
       note ASICs with per channel rates of 22Hz (pulser)
       note *all* FEE64 slow comparator 0x64
       note aida10 to be connected to MSL type BB7 - ignore for time being

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

      per p+n FEE64 1.8.L spectra - attachments 23-24
       pulser peak widths
        aida05, aida14, aida16 c. 20 ch FWHM - cable from DSSSD not connected to adaptor PCB
        aida09 c. 120 ch FWHM - electronic noise c. 2x worse than configuration used for 2023/4 tests

13.42 ASIC settings 2025Jun12-13.53.04
      *all* FEE64s slow comparator 0x64
                   all fast disc outputs disabled
      p+n FEE64s waveform threshold 7000, n+n FEE64s 9000

      CC grounding ribbon cable heavy duty braid to adaptor PCB and AIDA support assembly ground
       'top' p+n FEE64s and snout to be completed
      
16.00 DSSSD bias & leakage current - attachment 1
      FEE64 temps OK - attachment 2
      All system wide checks OK *except* WR decoder status aida02 and aida06 - attachment 3
      WR timestamps OK - attachment 4
      ADC data item stats - attachment 5
      per FEE64 Rate spectra - attachment 6
      per p+n FEE64 1.8.L spectra - attachment 7
       aida09 pulser peak width 117 ch FWHM - no change since yesterday
      per FEE64 1.8.W spectra - 20us FSR - attachments 8-10
  

EMC tests with NK (Orsay)

Stack configuration (upstream->downstream)

bPlas 
AIDA DSSSD #0
AIDA DSSSD #1
bPlas
3x MSL type BB7(DS)-1000 (1x aida10, 2x Mesytec preamplifiers)

AIDA DSSSD #0 bias -100V leakage current -13.23uA
AIDA DSSSD #1 bias -100V leakage current -9.68uA

BNC PB-5 settings
Amplitude 1.0V
Attenuator x1
Frequency 25Hz
Polarity +
tau_d 1ms
Tail pulse

14.39 per p+n FEE64 1.8.W spectra - 20us FSR - attachment 1

      per p+n FEE64 1.8.L spectra - attachment 2

      Pulser peak widths ch FWHM

      DSSSD #0 (DSSSD - FEE64 cables with heavy duty braid - electrically connected to ground of adaptor PCB and internally connected to ground within snout)

9  1   5
120 201  21
15  3  12
114 180  broad

      DSSSD #1 (DSSSD - FEE64 cables with mesh - currently not connected i.e. floating to adaptor PCB and internally connected to ground within snout)
10 14  13
-   22   374
11  7  16
broad 417 20

       Pulser peak widths c. 20 ch FWHM probably indicate cable from DSSSD *not* connected to FEE64 adaptor PCB

        

AIDA DSSSDs and FEE64-DSSSD cabling are electrically isolated (by design) from snout, mounting rods and support assembly.
 FEE64-DSSSD ribbon cables screened by 3M 1245 Cu foil, drain wire to FEE64 adaptor PCB

AIDA FEE64s are electrically isolated (by design) from the AIDA support frame and each other.

BNC PB-5 test signal 
 daisy chained to FEE64 adaptor PCBs via screened RG174 cable/Lemo 00-250 

CAEN N1419ET DSSSD bias
 daisy chained to 1x p+n junction FEE64 adaptor PCB/Si wafer via screened RG174 cable/Lemo 00-250
 CAEN N1419ET outputs floating, locally grounded by 1x n+n Ohmic FEE64 adaptor PCB link/DSSSD

AIDA FEE64s are connected to the DESPEC 19" rack
 power (AIDA FEE64 PSUs),
 timestamp (AIDA NIM MACB modules),
 system console (via serial-USB cables to USB hubs),
 RJ45 network cables (24 port Gbit network switch)

AIDA PSU PowerStax MS1U-6C-222233-01 - see attachments 1-2
 PSU outputs V+/V- and common 
 no direct ground connection

AIDA MACB
 HDMI cabling MACB-FEE64 is screened and shield is grounded

system console
 ?

RJ45 network cables are coupled by ferrite beads to FEE64 PCB and network switch
 no direct ground connection

18.30 AIDA powered up for brief test

      DSSSD bias & leakage current OK - attachment 1

      FEE64 temperatures OK - attachment 2

      ADC data item stats - attachment 3
       ASIC settings at power up - slow comparator 0x64

      per p+n FEE64 1.8.L spectra - attachment 4
       pulser peak width aida9 55 ch FWHM (39keV FWHm), aida15 53 ch FWHM (37keV FWHM)

      p+n FEE64 aida15 1.8.W spectra - 20us FSR - attachments 5-6

      saved *.L, *.H, *.W spectra for aida15 - attachments 7-11
       *.W spectra - 20us, 200us, 2ms & 20ms FSR 


19.27 DAQ STOP
      DSSSD bias OFF
      FEE64 power OFF

Start 00:43 22.2.25 https://elog.gsi.de/despec/G-24-00302/57
AIDA data file R9_85

Converting hexadecimal timestamp to decimal: 1740181266259754800
Assuming that this timestamp is in nanoseconds (1 billionth of a second):
GMT: Friday, February 21, 2025 11:41:06.259 PM
Your time zone: Friday, February 21, 2025 11:41:06.259 PM GMT+00:00


End 12:56 22.2.25 https://elog.gsi.de/despec/G-24-00302/85 (start of next degrader setting)
AIDA data file R9_199

Converting hexadecimal timestamp to decimal: 1740224934731157800
Assuming that this timestamp is in nanoseconds (1 billionth of a second):
GMT: Saturday, February 22, 2025 11:48:54.731 AM
Your time zone: Saturday, February 22, 2025 11:48:54.731 AM GMT+00:00

Analysis data files FEB25/R9_85 and FEB25/R9_199
 - no timewarps
 - deadtime aida05 c. 37% and 39% due to high SC41 scaler input to MACB - issue subsequently fixed 
 - deadtime aida04 c. 4%, all other FEE64s <<1%




FEE64 configuration

FEE64   a b c 
      g       h
        d e f

         a  b  c  d  e  f  g  h
DSSSD#1 15  3 12  9  1  5  2  4

n+n Ohmic FEE64s 2, 4

Data analysis assumes

- all LEC ADC data channels with valid ADC offset included (507 of 512 channels)
      LEC calibration ADC offset only

- no clustering

- no multiplex timestamp correction

- no p+n junction side - n+n Ohmic side correlation time gates

- FEE64 *not* DSSSD strip ordering

- hardware - slow comparator setting p+n junction FEE64s 100keV, n+n Ohmic FEE64s 150keV

- LEC energy difference +/- 168keV

- HEC energy difference +/- 1.68GeV

- valid LEC events

   p+n junction side multiplicity = 1 and n+n Ohmic side multiplicity = 1
   151keV < LEC energy < 1000keV
    to select candidate beta events
    standalone analysis of AIDA data, no downstream veto detector

- valid HEC events
   p+n junction side multiplicity > 0 and n+n Ohmic side multiplicity > 0
   (x,y) strips corresponding to maximum energy
   p+n junction and n+n Ohmic side HEC 

- HEC veto 
   not available - only 1x AIDA DSSSD installed

- per pixel implant-decay correlations

- end of event 
   difference in WR timestamp between successive ADC data items > 2500 and overall event length < 33us





per FEE64 LEC ADC data items 268ms/channel - attachments 3-5
- all
- 150keV < energy < 1500keV
- energy > 1500keV

absence of high instantaneous rates on spill cf. S181, S100, S505 etc
spill structure visible for energies > 1500keV - probably to be expected as majority of such events should be light ions

per FEE64 HEC ADC data items 268ms/channel - attachments 6-8

- all
- 100MeV < energy < 1000MeV
- energy > 1000MeV

Implant & decay event rates 262us/channel - attachment 9

LEC m_p versus m_n - attachment 10

LEC e_p versus e_n - 20keV/channel - attachment 11

HEC x strip versus y strip - attachment 12

- HEC-LEC implant decay time difference <1s
- HEC-LEC implant decay time difference <100s

shows x-y window used to select 82Nb events

HEC m_p versus m_n - attachment 13

HEC e_p versus e_n - 20MeV/channel - attachment 14


HEC-LEC implant-decay time difference (4ms/channel) versus - attachment 15
- HEC energy 
- LEC energy
- x & y strip 

x strips 130 & 136 disabled

HEC & LEC p strip - n strip time difference (2us/channel, offset=2000 channels) - attachment 16

HEC E (20MeV/channel) versus implant-decay time difference (4.194ms/channel) - attachment 17

LEC E (20keV/channel) versus implant-decay time difference (4.194ms/channel) - attachment 18

LEC e_p - e_n (5.6keV/channel) versus implant-decay time difference (4.194ms/channel) - attachment 19

HEC x & y strip versus implant-decay time difference (4.194ms/channel) - attachment 20

HEC-LEC implant-decay time difference (8.389ms/channel) for candidate 82Nb events - attachment 21
- blue - forward
- cyan - backward

Note
- no FRS PID
- no HEC dE
- no HEC veto
- no HEC energy gates - assume all events within x-y window *stop* in AIDA DSSSD - 82Nb events known to overlap in x-y with (longer-lived, more numerous) 83Nb events
- no front-back time difference
- no clustering
- *all* LEC channels with valid ADC offsets (507 of 512) included *except* 2x strips 130 & 136

HEC-LEC implant-decay time difference (8.389ms/channel) for candidate 82Nb events - attachment 22

Weighted least squares fit channels 1-12 half life 55(9)ms cf. NNDC 50.0(3)ms.

WR timestamp errors resolved after reseating the HDMI cables to the MACB