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:

Sun Jun 16 04:09:40 2019

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12.10 DAQ continues OK file RIBF147/R2_145

100Sn setting, no degrader

ASIC settings 2019Jun13-08.56.35

BNC PB-4 Pulser 
      Amplitude 90,000
      x5 attenuator IN
      Frequency 25Hz range, variable min. c. 2.5Hz
      t_r 100ns, tau_d 50us
      - polarity
      Delay MIN, tail pulse

good event statistics - DSSSD#1 noisy - see attachment 3
      10x <20k, 19x <50k, 20x <100k

p+n FEE64s 1.8.W spectra 20us, 200us, 2ms, 20ms FSR - DSSSD#1 noisy - attachments 4, 6, 7 & 8
      n+n FEE64s 1.8.W spectra 20us FSR - DSSSD#1 noisy - attachment 5

FEE64 Rate spectra - attachment 1
      Check ASIC Control *all* FEE64s & ASICs x1
      FEE64 Rate spectra - attachment 2

Observe that nnaida17 is the really noisy FEE64 - nnaida20, 22 & 23 show increased noise but
      not at same level as nnaida17. Is nnaida17 actually the problem? LH kapton PCB is the only
      one we did not replace for example.

12.21 DSSSD#1 stats OK

12.36 AIDA R2_151
      DTAS run 027
      BigRIPS still 2012

13:43 DAQ continues running OK file RIBF147/R2_167
      https://www.reddit.com/r/politics/
      Settings as before

Good events stats OK - DSSD#1 no longer noisy - see attach 9
      Leakage current OK - see attach 10
      Systems wide checks OK except nnaida7 fails calibration

Merger ~550k events/second, TapeServer 4435 Kbytes/s

Will increase thresholds on DSSD#1 and decrease on DSSD#3 on next DTAS stop.

14:20 DSSD#1 was found noisy again (Rate>100kHz & Tapeserver 10Mbytes/s)) but then soon after was back to a
      normal counting rate (Rate back to ~40kHz & Tapeserver back to 5 Mbytes/s)

14:39 DTAS & BigRIPS stops - changing threshold during AIDA R2_174
      DSSD#1 (nnaida17, 20, 22, 23) slow comparator threshold -> 1d (300 keV)
      DSSD#3 (nnaida9, 12, 14, 15) slow comparator threshold -> 8 (80 keV)

Check ASIC control x1 on all FEE64

Restarting
      AIDA R2_175
      DTAS 30
      BigRIPS 2013

New stats look OK - zero'd Counters - see attach  11
      nnaida 17,20,22,23 rates are down
      nnaida 9,12,14,15 rates are up
      It appears the data rate balances out. Data items & write to disk similar to before the changes. 
      See attach 12 & 13

New sample waveforms in attach 14 & 15. nnaida17 looks significantly better than before.
      Rates spectra also attached - see 16
      
17:12 Data rate still ~600k items/s
      File rolled over to R2_196

17:30 Current F11 rate ~190 cps
      Estimation of implant rate in AIDA of ~270 implants/s (number of HEC events in DSSD1 y strips over duration
of file R2_197)
         > increased AIDA rate likely due to double counting of multi-strip events
      Temps all ok

18.11 DAQ stats zero'd
      *all* histograms zero'd

20:13 DAQ continues to run OK
      Data rate ~620k items/s. FEE64 data rates remain approx. same
      Temps OK
      Just rolled over to file R2_222

20:44 DTAS run 39 started
      BigRIPS run 2015
      AIDA at 1.2GB into R2_226

22:44 DTAS run 42 started
      BigRIPS run 2017
      AIDA at 1.3GB into R2_243

Carried out ASIC check successfully
      Temps and data rate remain unchanged.

23:16 Been almost 1 day running. 
      DTAS running out of range in some of their timing histograms so reset the correlation scaler
      Reset successfully at start of R2_249

23:19 Reset signal sent again. Still in file R2_249

23:23 DTAS run 43 started
      BigRIPS run 2018
      AIDA run R2_250

23:54 MIDASSORT spectra saved to /homes/npg/spectra/specs-2019Jun16-23.52.55
      MIDASORT online started.

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Attachment 1: