ELOG DESPEC

AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40

DESPEC

Fields marked with * are required

Entry time:

Tue Mar 8 10:26:56 2022

Author*:

Subject*:

11.25 System wide checks OK except aida06 clock fail status 6 - attachments 1-13

ADC data item stats - attachment 14

FEE64 temperatures OK - attachment 15

DSSSD bias & leakage currents - attachment 16
  
      DSSSD#1 OK. DSSSD#2 leakage current has increased from c.5uA to c. 11uA overnight.

11.43 per FEE64 1.8.W spectra - 20us, 200us, 2ms, 20ms FSR - attachments 17-24

per FEE64 1.8.L spectra - attachments 25-26
          aida12 1.8.L pulser peak width 143 ch FWHM
          aida02 1.8.L pulser peak width 439 ch FWHM

Per FEE64 rate spectra - attachment 27

12.00 Cycled DSSSD#2 bias from -100V to 0 to -100V leakage current -7.7uA but ramping slowly (c. 5nA/10s ... ?)

13.26 DSSSD#2 bias -100V leakage current -8.54uA

15.46 - Noticed that DSSSD#1 braid no longer has filter, DSSSD#1 core still does. DSSSD#2 is unfiltered on both.

- Swap FEE64 power connectors #3 with #4, and #6 with #7, this means both n+n FEE64s are on the same paired channel

No significant change to stats

- Notice braid was only connected to FEEs 4 and 8, which meant beam-left bias guard ring 0v was floating. Use T to bring bias braid over to FEES 2 and 6 as well.
        Middle bias guard ring 0v is still floating

No significant change to stats, amplitude of 100 kHz waveform in n+n waves seems attenuated though

aida12 1.8.L pulser peak width 76 ch FWHM
     aida02 1.8.L pulser peak width 438 ch FWHM
 
     Attachment 28 - HV leakage current
     Attachment 29 - FEE ADC stats
     Attachment 30 - p+n side waveforms
     Attachment 31 - n+n side waveforms
     Attachment 32 - p+n pulser peak widths
     Attachment 33 - n+n pulser peak widths

15.55 - Reattach filter to DSSSD#1 braid

No major change, possible improvement in waveforms 
     Attachment 34 - Stats
     Attachment 35,36 - waveforms

16.46 - Reattach LK1 jumper to FEES 2, 4, 6, 8

Waveforms look OK, p+n rate slightly worse?
     Attachment 37 - Stats
     Attachment 38, 39 - waveforms
     Attachment 40 - Per FEE Rates

Encoding: HTML ELCode plain
Suppress Email notification Resubmit as new entry

Attachment 1:

Screenshot_from_2022-03-08_11-25-00.png Original size: 1920x1080

Attachment 2:

Screenshot_from_2022-03-08_11-24-55.png Original size: 1920x1080

Attachment 3:

Screenshot_from_2022-03-08_11-24-48.png Original size: 1920x1080

Attachment 4:

Screenshot_from_2022-03-08_11-24-42.png Original size: 1920x1080

Attachment 5:

Screenshot_from_2022-03-08_11-24-35.png Original size: 1920x1080

Attachment 6:

Screenshot_from_2022-03-08_11-24-30.png Original size: 1920x1080

Attachment 7:

Screenshot_from_2022-03-08_11-24-23.png Original size: 1920x1080

Attachment 8:

Screenshot_from_2022-03-08_11-24-15.png Original size: 1920x1080

Attachment 9:

Screenshot_from_2022-03-08_11-23-09.png Original size: 1920x1080

Attachment 10:

Screenshot_from_2022-03-08_11-22-45.png Original size: 1920x1080

Attachment 11:

Screenshot_from_2022-03-08_11-22-36.png Original size: 1920x1080

Attachment 12:

Screenshot_from_2022-03-08_11-21-52.png Original size: 1920x1080

Attachment 13:

Screenshot_from_2022-03-08_11-21-41.png Original size: 1920x1080

Attachment 14:

Screenshot_from_2022-03-08_11-21-30.png Original size: 1920x1080

Attachment 15:

Screenshot_from_2022-03-08_11-21-20.png Original size: 1920x1080

Attachment 16:

Screenshot_from_2022-03-08_11-21-02.png Original size: 734x499

Attachment 17:

Screenshot_from_2022-03-08_11-40-39.png Original size: 1920x1080

Attachment 18:

Screenshot_from_2022-03-08_11-40-03.png Original size: 1920x1080

Attachment 19:

Screenshot_from_2022-03-08_11-39-35.png Original size: 1920x1080

Attachment 20:

Screenshot_from_2022-03-08_11-39-14.png Original size: 1920x1080

Attachment 21:

Screenshot_from_2022-03-08_11-38-07.png Original size: 1920x1080

Attachment 22:

Screenshot_from_2022-03-08_11-37-33.png Original size: 1920x1080

Attachment 23:

Screenshot_from_2022-03-08_11-37-14.png Original size: 1920x1080

Attachment 24:

Screenshot_from_2022-03-08_11-35-51.png Original size: 1920x1080

Attachment 25:

Screenshot_from_2022-03-08_11-35-16.png Original size: 1920x1080

Attachment 26:

Screenshot_from_2022-03-08_11-32-45.png Original size: 1920x1080

Attachment 27:

Screenshot_from_2022-03-08_11-30-24.png Original size: 1920x1080

Attachment 28:

2022-03-08_15-48-40_HV.png Original size: 740x518

Attachment 29:

2022-03-08_15-49-03_stats.png Original size: 1918x512

Attachment 30:

2022-03-08_15-53-42_pn_waves.png Original size: 1918x925

Attachment 31:

2022-03-08_15-50-12_nn_waves.png Original size: 1915x620

Attachment 32:

2022-03-08_15-54-40_pn_widths.png Original size: 1923x675

Attachment 33:

2022-03-08_15-57-00_nn_widths.png Original size: 1913x801

Attachment 34:

2022-03-08_16-13-21_stats.png Original size: 1909x479

Attachment 35:

2022-03-08_16-15-35_pn_waves.png Original size: 1914x909

Attachment 36:

2022-03-08_16-14-58_nn_waves.png Original size: 1915x815

Attachment 37:

Screenshot_from_2022-03-08_16-39-44.png Original size: 1920x1080

Attachment 38:

Screenshot_from_2022-03-08_16-40-15.png Original size: 3840x1080

Attachment 39:

Screenshot_from_2022-03-08_16-41-08.png Original size: 3840x1080

Attachment 40:

Screenshot_from_2022-03-08_16-41-57.png Original size: 1920x1080

Attachment 41:

Drop attachments here...

ELOG V3.1.4-unknown