 Wed Jul 23 15:56:00 2025, CC, MP, NK, Test of AIDA05 with new bias module 
|
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. |
|
Wed Jul 23 15:04:26 2025, CC, MP, NK, Test of AIDA05 with BB7 connected to Mesytec but not biased
|
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 |
|
Wed Jul 23 13:59:37 2025, CC, NK, Shielding of the snout
|
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. |
|
Wed Jul 23 13:08:30 2025, CC, NK, Comparison of channels in the same FEE64 and ASIC 05.1
|
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 |
|
Wed Jul 23 09:37:34 2025, CC, NK, Comparison pulser FWHM with/without HT and detector cables 9x
|
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 |
|
Tue Jul 22 18:00:45 2025, CC, NK, MP, FWHM aida FEE
|
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 |
|
Tue Jul 22 17:00:26 2025, MP, CC, Status
|
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. |
|
Mon Jul 21 13:01:19 2025, MP, Status
|
Status before grounding checks |
|
Sun Jun 15 10:53:08 2025, TD, Sunday 15 June 2025 41x
|
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 |
|
Sat Jun 14 11:20:45 2025, TD, Saturday 14 June 2025 30x
|
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 |
|
Fri Jun 13 12:42:39 2025, CC, TD, Friday 13 June 2025 10x
|
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
|
|
Thu Jun 12 13:15:25 2025, GB, CC, NK, MP, TD, Thursday 12 June 2025
|
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
|
|
Tue Apr 8 08:52:39 2025, TD, AIDA grounding
|
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 |
|
Tue Mar 11 11:53:18 2025, TD, Monday 10 March 11x
|
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 |
|
Sat Feb 22 12:35:38 2025, TD, Offline analysis data files R9_85-R9_199 (84Mo setting) 22x
|
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. |
|
Thu Feb 20 17:06:42 2025, JB, CC, TD,MP, WR error for aida 13,14,15,16
|
WR timestamp errors resolved after reseating the HDMI cables to the MACB |
|
Wed Feb 12 10:46:01 2025, TD, Offline analysis data files S181 R4_351-396 25x
|
Analysis data files R4_351-396
Data file R4_351 first WR ts 0x17D7B4C72B0BA9C8
Converting hexadecimal timestamp to decimal: 1718040550378809900
Assuming that this timestamp is in nanoseconds (1 billionth of a second):
GMT: Monday, June 10, 2024 5:29:10.378 PM
Your time zone: Monday, June 10, 2024 6:29:10.378 PM GMT+01:00 DST
Relative: 8 months ago
Data file R4_396 first WR ts 0x17D7BE86408888E8
Converting hexadecimal timestamp to decimal: 1718051266682718500
Assuming that this timestamp is in nanoseconds (1 billionth of a second):
GMT: Monday, June 10, 2024 8:27:46.682 PM
Your time zone: Monday, June 10, 2024 9:27:46.682 PM GMT+01:00 DST
Relative: 8 months ago
Attachments 1-2 - analysis data files R4_351 and R4_396
max. *time averaged* deadtime FEE64 #7 (aida08) 1.7% and 1.7% respectively
all other FEE64 deadtimes < 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
DSSSD#2 11 7 16 10 14 13 6 8
n+n Ohmic FEE64s 2, 4, 6, 8
Data analysis assumes
- all LEC ADC data channels with valid ADC offset included (1012 of 1024 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 +/- 11200keV (wide open for first pass analysis)
- HEC energy difference +/- 1.68GeV
- valid LEC events
p+n junction side multiplicity = 1 and n+n Ohmic side multiplicity = 1
LEC energy > 151keV
to select candidate beta and alpha events - will include light ions
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
p+n junction side multiplicity > 0 or n+n Ohmic side multiplicity > 0
- per pixel implant-decay correlations
- end of event
difference in WR timestamp between successive ADC data items > 2500 and overall event length < 33us
Number of events observed
*** scaler # 1 count: 35941696 DSSSD#1 decay events LEC m_p = 1 and LEC m_n = 1, ADC data > 151.2keV *and* HEC m_p = HEC m_n = 0, ADC data > 151.2MeV
*** scaler # 2 count: 31960753 DSSSD#2 decay events LEC m_p = 1 and LEC m_n = 1, ADC data > 151.2keV *and* HEC m_p = HEC m_n = 0, ADC data > 151.2MeV
*** scaler # 3 count: 1499844 DSSSD#1 implant events HEC m_p > 0 and HEC m_n > 0, ADC data > 151.2MeV
*** scaler # 4 count: 1297356 DSSSD#2 implant events HEC m_p > 0 and HEC m_n > 0, ADC data > 151.2MeV
*** scaler # 5 count: 5446969 DSSSD#1 other events HEC m_p > 0 or HEC m_n > 0 *and* LEC m_p > 8 or LEC m_n > 8
*** scaler # 6 count: 75030747 DSSSD#2 other events HEC m_p > 0 or HEC m_n > 0 *and* LEC m_p > 8 or LEC m_n > 8
DSSSD#1 implant events
x=m_p=0 ?
y=m_n=0 ?
DSSSD#2 implant events
x=m_p=0 ?
y=m_n=0 ?
Attachments 3-6 - per FEE64 LEC data item rates 268ms/channel - common x and y scales
- no conditions
- 150keV < energy < 1500keV
- energy > 1500keV
Some deadtime observed on spill, none observed off spill. No significant variation in per FEE64 LEC data rates.
Attachments 7-8 - per FEE64 LEC hit patterns
- 150keV < energy < 1500keV
- energy > 1500keV
Aside from usual hot channels at cable/DSSSD boundaries good hit pattern observed. For > 1500keV events observe flat field in x-plane, focussed in y-plane.
Attachments 9-11 - per FEE64 HEC data item rates 268ms/channel - common x and y scales
- no conditions
- 100MeV < energy < 1000MeV
- energy > 1000MeV
Note hot HEC channel in aida08 - should be disabled.
Attachment 12 - per DSSSD decay and implant rates 262us/channel - common x and y scales
Attachment 13 - per DSSSD LEC m_p versus m_n
- no conditions
Attachment 14 - per DSSSD LEC p strip versus n strip
- no conditions
Attachments 15-16 - per DSSSD LEC E_p versus E_n - x and y-axes 20keV/channel
- LEC energy difference +/- 2000 channels (+/- 11200keV)
Attachments 17-18 - per DSSSD p strip versus n strip
- HEC-LEC time difference <1s
- HEC-LEC time difference <100s
Attachment 19 - per DSSSD HEC m_p versus m_n
Attachment 20 - per DSSSD HEC p strip versus n strip
- no conditions
- z_hec=1 => implant stops in DSSSD#1
- z_hec=3 => implant hits DSSSD#1 and DSSSD#2 but does not necessarily stop in DSSSD#2
Attachment 21 - per DSSSD HEC E_p versus E_n - x and y axes 20MeV/channel
Attachment 22 - DSSSD#1 HEC E_p versus DSSSD#2 HEC E_p - x and y axes 20MeV/channel
- few events stop in DSSSD#2
- most events lower Z and A - fission fragments?
Attachment 23 - per DSSSD per pixel HEC-LEC time difference 4.096us/channel
- events observed to <<100us
Attachment 24 - per DSSSD per pixel HEC-LEC time difference (1s/channel) versus LEC energy (20keV/channel)
- alpha events long lived
- some evidence of effect of on spill deadtime in implant-decay correlations (cf. S100 and S505)
Attachment 25 - per DSSSD implant and decay event p strip - n strip time difference (2us/channel)
- wider distribution for implant events as expected due to number of ASIC active channels in implant events
- most decay events +/-2us - lower ASIC occupancy for decay events so most events will be from same (or adjacent) clock cycle |
|
Fri Jan 31 17:26:47 2025, CC, TD, MP, Friday 31 January contd. 16x
|
18.18 bPlas and BB7 installs complete
Restart AIDA DAQ, Merger, Tape Server and re-test
per p+n FEE64 1.8.L spectra - attachment 1
aida09 pulser peak width 69 ch FWHM = 42keV FWHM
per FEE64 Rate Spectra - attachment 2
BB18 p+n FEE64s very good/good, n+n FEE64s OK - could be improved
BB7 aida10 p+n asics good, n+n asics 1x good, 1x OK
per FEE64 1.8.W spectra - 20us FSR - attachments 3-5
ADC data item stats - attachment 6
aida01 aida03 30k, all other BB18 p+n FEE64s < 20k, n+n FEE64s 100/270k
BB7 aida10 19k
WR timestamps OK - attachment 7
Merger, TapeSever etc - attachments 8-9
disk directpry /TapeData/FEB25
working OK
DSSSD bias & leakage current OK - attachment 10
System wide checks OK - attachment 11-15
note global clock status 6 errors reported earlier today have now gone
FEE64 temperatures OK - attachment 16
18.38 Transition to safe state
DAQ STOP
disable data transfer 1
detector bias OFF
FEE64 power OFF
Can restart as follows
1) FEE64 power ON
2) DAQ RESET
3) DAQ SETUP
4) Enable histogramming
5) Enable waveforms
6) Detector bias ON
7) Restore ASIC settings
8) ASIC Control
9) FEE64 temperatures
10) System wide checks
sync ASIC clocks
11) FADC control - calibrate ADCS for *all* FEE64s
12) System wide checks contd.
13) DAQ GO
14) Check ADC data item stats
15) Check WR timestamps
If all OK can re-connect to Merger/TapeServer as follows
1) DAQ STOP
2) enable data transfer 1
3) DAQ GO
Can disconnect from Merger/TapeServer as follows
1) DAQ STOP
2) disable data transfer 1
|
|
Fri Jan 31 13:48:29 2025, JB, AIDA analysis from HI-DESPEC meeting 20.11.2024
|
AIDA analysis and presentation by J. Bormans for AIDA made in the HISPEC-DESPEC collaboration meeting.
https://docs.google.com/presentation/d/1hlZ30r294UqbVKGy3jg-wompFpc7TSfD/edit?usp=sharing&ouid=102131181856760114019&rtpof=true&sd=true |
|
Fri Jan 31 09:37:47 2025, CC, TD, MP, Friday 31 January 26x
|
Implantation stack mounted - BB18(DS)-1000 + bPlas + bPlas + 3x BB7(DS)-1000
N.B. aida02, aida09 & aida15 have grounded copper screen (3M 1245 - aluminimum braid to copper screen of ribbon cables) for Kapton PCBs connecting the Samtec ribbon cables to the BB18 DSSSD.
n+n FEE64s aida02, aida04, aida06 and aida08 LK1 fitted
p+n FEE64s aida03 and aida07 LK3 fitted
BB7 aida10 (asics #1-2 p+n, #3-4 n+n)
BB18 p+n FEE64s 9-15, 1-3, 5-12 - n+n FEE64s 2-4 (L-R looking downstream)
10.30 FEE64 power ON
DSSSD bias ON (BB18 only) - attachment 1
leakage current OK
ASIC settings 2024Dec13-17.02.45 restored
p+n FEE64 slow comparator 0xa, n+n FEE64 slow comparator 0xf
Attachments 2-7 WR timestamp aida05 & aida12, system wide check
aida12 & aida05 global clock status 6 - to be checked - OK for initial tests without merger
WR decoder status aida02
per FEE64 Rate spectra - attachment 8
aida10 high rate - BB7 not biased
rates OK for p+n FEE64s, rates high for n+n FEE64s - to be checked
BNC PB-5 pulser ON to p+n FEE64s - no obvious adaptor PCB misalignments
ADC data item stats - attachment 9
rates generally OK
aida10 high - BB7 not biased
aida02 & aida04 n+n FEE64s - rates high - to be checked when bPlas install complete
all p+n FEE64s connected to BB18 <10K except aida05 25k - very good!
BNC PB-5 settings - attachment 10
WR timestamps OK - attachment 11
FEE64 temperatures OK - attachment 12
12.15 bPlas driver PCB installed, bPlas cabling and grounds *not* connected yet
ADC data item stats - attachment 13
all rates higher cf. attachment 9
per FEE64 Rate spectra - attachment 14
per p+n FEE64 1.8.L spectra - attachment 15
aida09 pulser peak width 69 ch FWHM = 49keV FWHM
aida14 pulser peak width 50 ch FWHM = 35keV FWHM
per p+n FEE64 1.8.W spectra - 20us FSR - attachments 16-17
per n+n FEE64 1.8W spectra - 20us FSR - attachment 18
DSSSD bias & leakage current OK - attachment 19
ambient temperature +21.6 deg C, d.p. +0.4 deg C, RH 24.4%
FEE64 temperatures OK - attachment 20
DSSSD bias volatge & leakage current OK - attachment 21
CAEN N1419ET ch#0 BB18, ch#1 BB7
Install of bPlas drivers, cabling, grounds complete
ADC data item stats - attachment 22
per FEE64 Rate spectra - attachment 23
all BB18 p+n FEE64s *except* aida05 show very low rates of noise
per p+n FEE64 1.8.L spectra - attachment 24
aida09 pulser peak width 62 ch FWHM = 42keV FWHM
BB18 p+n FEE64s better electronic noise cf. p+n FEE64s not connected to a DSSSD
per FEE64 1.8.W spectra - 20us FSR - attachments 25-26 |
|