AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
AIDA
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Entry time:
Sat Mar 29 12:30:58 2025
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> > 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 > > > > > > > > > >
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