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. |