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

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Entry time:

Thu Apr 11 08:27:21 2024

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<pre>
TO-DO for 11.04.2024

- Try bringing bPlast drain wire ground back to the PSU ground for PN 300 and R&amp;SRMP4040.

- Recheck the downstream detector bias and ground scheme.</pre>

-

&nbsp;

9:27 Restarted AIDA and hit go at 9:54. Situation the same as it was in the evening of 10.04.2024. 10 out of 16 FEE64s in good condition. Waveforms of aida16,

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; TEMP OK - HV OK. See attachments 1-6.

&nbsp;

10:20 We grounded the output of the R&amp;SRMP4040 to to the drain wire ground of the bPlast ribbon cables and the output of the PN 300 PSU that is powering the booster boards. Results given by attachments 7 -11. We only saw a marginal improvement in the overall noise condition.

10:32 We connected the ground of the frame to the drain wire ground, that is also mutually connected to the ground of the R&amp;SRMP4040 output ground and PN 300 output ground. Results given by attachments ???. We did not see any improvement in the overal noise condition.

&nbsp;

11.00 DSSSD HV OFF

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; FEE64 power OFF

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Check seating of all adaptor PCBs and drain/ground wires secured - generally OK

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Restart

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1.8.W spectra - 20us FSR - attachments 15-16

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; per FEE64 Rate spectra - attachment 17

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 10/16 &lt; 20k, max 110k

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ADC data item stats - attachment 18

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Incremental improvement.

&nbsp;

11.45 DSSSD HV OFF

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; FEE64 power OFF

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; test - daisy chain removed

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Restart

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1.8.W spectra - 20us FSR - attachments 20-21

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; per FEE64 Rate spectra - attachment 19

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 10/16 &lt; 20k, max 210k

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ADC data item stats - attachment 22

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; overall somewhat worse

&nbsp;

12.20 DSSSD HV OFF

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; FEE64 power OFF

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Re-install test - daisy chain, Tighten aida04 DSSSD ribbon cable drain wire.

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Restart

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1.8.W spectra - 20us FSR - attachments 23-24

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; per FEE64 Rate spectra - attachment 25

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ADC data item stats - attachment 26

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 10/16 &lt; 20k, max 110k

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Status quo ante

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; aida04 &amp; aida08 1*W &amp; 2*W spectra - 200us FSR - attachments 27-31

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; large transients observed for aida04 1*W - cable or ASIC fault?

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; aida16 **W spectra - 200us FSR - attachments 32-35

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; all channels apopear to be working but mix of high/low noise channels for asics #3-4, asics #1-2 all appear high noise

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

14.00 DSSSD HV OFF

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; FEE64 power OFF

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Disconnect ribbon cables from aida04 adaptor PCB

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Restart

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; n+n FEE64 1.8.W spectra - 20us FSR - attachments 37

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; per FEE64 Rate spectra - attachment 36

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ADC data item stats - attachment 38

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Implies origin of large transients observed in aida04 asic#1 is downstream of the FEE64 adaptor PCB, i.e. ribbon cable or DSSSD.

&nbsp;

14.40 DSSSD HV OFF

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; FEE64 power OFF

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; re-connect ribbon cables from aida04 adaptor PCB

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1x pin J2 slightly bent - straightended with screwdriver - FFSD connector insertion OK

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Restart

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; n+n FEE64 1.8.W spectra - 20us FSR - attachments 40-41

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; per FEE64 Rate spectra - attachment 42-43

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ADC data item stats - attachment 39

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 10x &lt; 20k, max 120k

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; aida11 asic#4 1.8.W spectra - 200us FSR - attachment

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; no large transients observed

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; DSSSD #1 &amp; #2 bias from -120V to -100V

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ADC data item stats - attachment 40

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 9x &lt; 20k, max 220k (aida08)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; per FEE64 Rate spectra - attachment 41

&nbsp;

17.15 bPlas ON -

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Current bPlast ground configuration:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; bPlas current ground configuration - drainwires of all ribbon cables excluding short side (cont. with snout) are grounded back to the bPlast R&amp;SRMP4040 PSU, on the 29 V output. 4 V PSU to booster boards are floating, output of PN 300 is grounded to the PSU. The mesytec PSU, that also powers bPlast SiPMs at

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 29V is not grounded to anything but the frame. Snout is currently light tight, I suspect internal radiation from FATIMA.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; It is noted that bPlast current draw fluctuated significantly (+/- 300 mV) as a result of thresholds set to the detector. I tried to set the thresholds HIGH to stabilise the bPlast detector as the power draw is fluctuating greatly. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; AIDA noise very good

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ADC data item stats - attachment 42

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 12x &lt; 20k, max 83k (aida04)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; per FEE64 Rate spectra - attachment 43

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;

To Do list

- separate 29V (low current) and 4V (high current) return paths/ground refs

- The mesytec PSU that powers the bPlast detector&nbsp; is running to frame, it might be an idea to ground ribbon c

&nbsp;

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