AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
DESPEC
Draft saved at 00:00:00
Fields marked with
*
are required
Entry time:
Sat Mar 29 11:29:16 2025
Author
*
:
Subject
*
:
> > 11:30 BNC PB-5 pulser polarity chnaged from positive to negative (using LOCAL control) > Swap BNC cables (top + bottom & left + right) from BNC PB-5 and Cooknell SA1 Sum Amp outputs > Switch Cooknell SA1 Sum Amp output from negative to positive > > Observe pulser peak of c. 15 ch FWHM for aida08 and c. 35 ch FWHM for aida14 > > This probably indicates > - noisy Cooknell SA1 > - problem with T and/or Lemo-00 cable between BNC PB-5 and Cooknell SA1 > > > Investigate noise situation of AIDA (no DSSSDs connected) > > > > Figs 1-6: Waves, Pulser Peaks + Widths *before* any changes > > - aida16 very noisy ASICS 1&2, normal ASICS 3&4 > > - back-side aidas (02,04,06,08) worse resolution than front-side > > - high-frequency noise still noticeable in waveforms > > > > Figs 7-8: Remove pulser in (from NIM rack) only > > - no noticable change > > > > Figs 9-10: Remove all pulser cables from adapter boards > > - looks improved > > > > Figs 11-12: HV Braid->GND Jumpers removed > > > > Fig 13-14: All HV cables removed > > - aida06, aida14 isn't updating > > - very noticable improvement > > > > Fig 15-16: Intermediate HV cables re-added > > - signal worse in FEE64s with HV cables > > - aida09, aida01, aida10, aida13, aida05, aida14 don't have HV interconnect cables, look good > > > > Conclusion: We see noticeable improvements removing the interconnect cables between FEE64s. > > > > Pulser widths now: > > - aida14 (-ve amplitude) = 13.5 channels > > - aida08 (+ve amplitude) = 40 channels (?)
Encoding
:
HTML
ELCode
plain
Suppress Email notification
Attachment 1:
Drop attachments here...
Draft saved at 00:00:00
ELOG V3.1.4-unknown