Waveforms and discriminator ON. Pulser re-connected to all fees via daisy chain. V=100v, I=8.36uA
Pulser peak widths (ch FWHM)
aida01 ~ 109
aida02 ~ 98
aida05 ~ 24
aida03 ~ 118
aida04 ~ 136
Attachments 2, 3 & 4 1.8.W spectra, 20us FSR
Attachment 5 FEE64 temps OK
Attachment 6 per FEE64 ADC data item rates OK
Attachment 7 per FEE64 rate spectra
Merger reset following procedure from https://elog.ph.ed.ac.uk/DESPEC/36. Keywords for future elog search NetVar, xfer links
Pulser walkthrough R94
EG&G Ortec 448 Pulser settings
Amplitudes 90,000 - 10,000 @ 10,000 step
Attenuators x5 IN
t_r 50ns tau_d 50us
polarity + (- polarity via Cooknell SA1)
Frequency int relay
Motors box turned ON, motors pi ON, dlink network connector ON. Motors box, pi and dlink all in 19 inch rack but power supply is from a uk mains extender daisy chained to vacuum mains extender. 19 inch rack power supply remains on clean line.
Pulser peak widths (ch FWHM)
aida01 ~ 105
aida02 ~ 98
aida05 ~ 23
aida03 ~ 132
aida04 ~ 144
See attachments 8 & 9
Detectors moved in by pnuematic only. Leakage current increased to 9.6 uA (same as leakage current during bias ramping)
Pulser Walk R95
Pulser settings as above
See attachments 10 & 11
Detectors moved back out . Motors box, pi and dlink still turned ON. Leakage current to 8.36 uA
Pulser Walk R96
Pulser settings as above
See attachments 1 & 12
Jumper removed from nn bias fee adaptor board (aida04). No jumpers on any adaptor boards now. V=100V, I=8.36uA
See attachments 14 & 15 - 1.8.W spectra 20us FSR
Pulser on 90,000 x5 attenuate
aida01 ~ 123, centroid ~14691
aida02 ~ 106, centroid ~ 15038
aida05 ~ 23, centroid ~ 14414
aida03 ~ 125, centroid ~ 50838
aida04 ~ 127, centroid ~ 51754
Jumper reinstalled on aida04 nn bias. Note only link 1, link2 inaccesible with fee inserted into ERNI. See attachment 13
aida01 ~ 123, centroid ~14688
aida02 ~ 114, centroid ~ 15034
aida05 ~ 23, centroid ~ 14411
aida03 ~ 118, centroid ~ 50854
aida04 ~ 135, centroid ~ 51697
Pulser off. Background run to be left overnight started 14:24 R97. V=100v, I=8.36 uA. |