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 11:31:42 2025
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Upstream, 207Bi source DSSSD #1 nnaida 6 & 9 (p+n), nnaida 11 & 16 (n+n) DSSSD #2 nnaida 2 & 5 (p+n), nnaida 4 & 7 (n+n) DSSSD #3 nnaida 1 & 14 (p+n), nnaida 3 & 8 (n+n) N/C nnaida 10 & 13 (p+n), nnaida 12 & 15 (n+n) 3x MSL type BB18(DS)-1000 DSSSDs connected via 12x flexible Kapton PCB cables to 8x adaptor PCBs Hit patterns show attachments 1-16 Default ASIC parameters except slow comparator 0x10 -> 0x20 Example ASIC configuration attachment 17 Example 'Good Events' statistics attachment 18 ASIC #1 waveforms of nnaida 1 - 16 enabled Example waveform for p+n and n+n strips of each DSSSD attachments 19-24 Parameters saved to: /MIDAS/DB/EXPERIMENTS/AIDA/2015Apr26-10.56.40 12.10 Removing bias gnd jumper from p+n adaptor PCBs increases amplitude of ~100kHz RFI/EMI (attachment 25) 15.20 Reduce DSSSD configuration to 1x DSSSD using 4x adaptor PCBs + heavy duty copper braid DSSSD #2 nnaida 2 & 14 (p+n), nnaida 4 & 7 (n+n) attachments 26-33 show example preamp traces and ASIC#1 spectra similar stability/performance to previous tests with a single DSSSD, typical pulser peak widths ~130-200 ch FWHM AIDA snout drain wire - no obvious difference if connected, or not (as before) 15.40 DSSSD configuration 2x DSSSD using 8x adaptor PCBs DSSSD #2 nnaida 2 & 14 (p+n), nnaida 4 & 7 (n+n) + heavy duty copper braid DSSSD #1 nnaida 6 & 10 (p+n), nnaida 11 & 16 (n+n) + black jumper cables from above adaptor PCBs to these adaptor PCBs Detector bias from N1419 and N1419B, i.e. separate NIM modules => separate floating grounds similar or improved performance to 1x DSSSD test, typical pulser peak widths ~115-250 ch FWHM 16.15 CG smartphone camera pictures of front end config 16.30 data to disk - file /Tapedata/May2015/R3_0.gz (BNC Pb-4 25Hz + 207Bi source) 17.30 Detector bias from N1419, i.e. both detector biases from same NIM module => same floating ground for both DSSSDs Similar performance to case above (separate NIM modules) 17.46 data to disk - file /Tapedata/May2015/R4_0.gz (BNC Pb-4 25Hz + 207Bi source) Encoding: HTML ELCode plain Suppress Email notification

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