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 12:26:37 2025
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> > 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
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