AIDA
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nTOFCapture
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StellarModelling
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AIDA
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MSL type BB18(DS)-1000 serial 2998-22 Bias +200V, I_L +=6.200uA, ambient temperature +20.1 deg C DSSSD - AIDA adaptor PCB cabling 4 off LH Coupler (Kapton PCB, 5cm), 2x 34-way Samtec ribbon cable (45cm), RH coupler(Kapton PCB, 10cm) + 3M 1245 1.4mil copper foil screen ribbon cables + RH coupler only (i.e. not LH coupler) + drain wires -> gold-plated Lemo-00 test input connectors nnaida 11 & 12 AIDA adaptor PCB rev B nnaida 13 & 14 AIDA adaptor PCB rev C (LK1 fitted) ground links LK3 & LK7 fitted to nnaida11-14 AIDA adaptor PCBs Heavy duty copper cable connects copper front end frames of FEE modules Nitto 5011N conductive gasket between FEE module and front end frames Standard ASIC settings nnaida 11 & 12 - negative input nnaida 13 & 14 - positive input Pulser BNC PB-5 Fall time 1.0ms Rate 100Hz Delay 250ns Ampl 5.00000V Polarity + Pulse top Tail Atten 10x Clamp ON - polarity via Cooknell SA1 Summing Amplifier 207Bi source, approx centred on DSSSD, approx 3cm from DSSSD File R30 shaping time 8uS slow comparator 6 (dec) start: 10.21 stop: 15.09 spectra saved to disk 16.10 BST (sic) Pulser OFF see attachments 1-4 (stat & rate hit patterns) File R33 shaping time 8uS slow comparator 5 (dec) start: 16.03 stop: 17.44 spectra saved to disk 18.45 BST (sic) Pulser OFF Connect DSSSD-AIDA adaptor PCB screened cabling drain wires to adaptor PCB mounting holes and secure with M3 socket bolts. With introduction of conductive gasket should be equivalent to previous grounding via crocodile clips and gold-plated Lemo-00 test input connectors. 18.19 Bias +200V, I_L +=6.760uA, ambient temperature +20.2 deg C File R34 shaping time 8uS slow comparator 8 (dec) start: 18.34 stop: 10.19 19.2.16 spectra saved to disk 11.20 BST (sic) Pulser OFF see attachments 5-8 Attachments 9 & 10 DSSSD energy (~10keV/ch) versus DSSSD strip # Note some eveidence for non-linearity at low amplitude for p+n strips (128-255) cf. n+n strips (0-127) Projection of above showing energy spectrum for one strip. Can observe 478 and 975keV K-lines and prominent Landau peak near threshold. Threshold estimated at ~80-100keV (slow comparator 0x8). m(p+n strips) = m(n+n strips) = 1, E(p+n strip)-E(n+n strip) = +/- 100keV Enegy spectra ADC offset correct, no relative gain adjustment Attachments 11, 12 Energy (p+n strip) versus E(n+n strip) ~10keV/channel, m(p+n strips) = m(n+n strips) = 1, with & without equal energy gate Attachments 13, 14 & 15 Raw hit pattern, m(n+n strips) and m(p+n strips) Attachment 16 - gzip'd tar file of sorted R34 spectra (see attachments 17 & 18) Attachment 17 - FORTRAN user subroutine Attachment 18 - ADC offset variables used by FORTRAN user subroutine Attachment 19 - ADC offsets
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