ELOG AIDA

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 12:28:08 2025
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> 15.20 All ERNI pins of aida01 adaptor PCB OK => FEE64 #1 ASIC #2 channel #5 issue faulty test C? faulty ASIC channel? > > Fitted drain wire from aida06 & aida08 adaptor PCBs to FEE64 cooling plates > > n+n FEE64 1.8.W spectra 20us FSR - attachments 1-2 > > p+n FEE64 1.8.W spectra 20us FSR - attachments 3 > > p+n FEE64 1.8.L spectra - attachment 4 > aida01 1.8.L pulser peak width 15 ch FWHM > > n+n FEE64 1.8.L spectra - attachment 5 > double peak spectra > > Significant improvement in noise for aida06 & aida08 but still not as good as aida02 & aida04. Some additional extrinsic noise observed for aida02 & aida04. > > No change in 1.8.L spectra > > n+n FEE64 1.8.W spectra aida02 200us FSR, other FEE64s 20us FSR - attachments 6 > baseline sinusoid observed - 4T = 320 samples = 64us = 15.6kHz > > 15:50 BNC PB-5 > switch polarity + to - > switch BNC cables from BNC PB-5 and EG&G Ortec 534 outputs for test +/- > > Attachments 7-8 > baseline sinusoid observed for p+n not n+n FEE64 1.8.W spectra > suggests issue is EG&G Ortec 534 > > Restore original cabling > > > > 16.55 Swap aida09 HDMI cable from MACB #4 port 1 to MACB #5 port 1 - power cycle and restart - no change - aida09 clock not locked > > Replace aida09 HDMI with new HDMI cable to MACB # 4 port 1 - power cycle and restart - aida09 clock locked > > > FEE64 temperatures OK - attachment 9 > > System wide checks - attachments 10-15 > OK except cannot calibrate aida12 ADCs > > per FEE64 rate spectra - attachment 16 > > p+n FEE64 1.8.L spectra - attachments 17 > aida01 1.8.L pulser peak width 15 ch FWHM > > n+n FEE64 1.8.L spectra - attachments 18 > double peak spectra > > p+n FEE64 1.8.W spectra 20us FSR - attachments 19-20 > > n+n FEE64 1.8.W spectra 20us FSR - attachments 21-22 > > > 17.10 n+n FEE64 1.8.W spectra 200us FSR > BNC PB-5 decay time 50us - attachment 23 > BNC PB-5 decay time 1ms - attachment 24 > > > 18.05 ADC data item stats > > slow comparator 0x64 -> 0xa > BNC PB-5 pulser frequency 100Hz so expect rate of ADC data items per FEE64 to be c. 6.4kHz > > attachment 25 - aida06 & aida08 ground from FEE64 cooling plate to adaptor PCB fitted, test - connected to aida02, aida04, aida06 & aida08 > attachment 26 - aida06 & aida08 ground from FEE64 cooling plate to adaptor PCB fitted, test - disconnected from aida02, aida04, aida06 & aida08 > attachment 27 - aida06 & aida08 ground from FEE64 cooling plate to adaptor PCB not fitted, test - disconnected from aida02, aida04, aida06 & aida08 > > Rev A adaptors require grounding (as expected). Output of EG&G Ortec 534 produces c. 15kHz sinsusoid at test input - cable length/capacitative load? > > Encoding: HTML ELCode plain Suppress Email notification

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