ELOG DESPEC

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

DESPEC

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Entry time:

Thu May 20 14:56:33 2021

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16:00 p+n threshold 0xc (120keV)
      n+n threshold DSSD2 0x20 (250keV) ASICS 1-3, 0x64 ASIC4
      n+n threshold DSSD2 0x19 (250keV) ASICS 1-3, 0x64 ASIC4

Dead time has increased from yesterday. From the elog this appears to coincide with their changing of the spill structure.

17:30 Grafana informs us we have hit 10uA on DSSD2. This is fine with the size of the detector

18:12 Gregor noticed that at 18:02 the rate in AIDA increased. This could be related to the autofill starting around now.
      The deadtimes in FEE6 and 8 have risen to around 6.25%.
      Looking at this mornings and yesterday evenings fill times this behavior isn't observed

18:30 The rates still seem to be increased so is unlikely to be due to the filling which finished at least 10 minutes ago

18:49 Have tried raising the thresholds to 0x1a for the y side strips of DSSD2
      This has brought the deadtime of AIDA06 down to 5.53% (This seems to have just been a statistical fluctuation and the rate went back up again in the next file)

18:12 Raised threshold to 0x1b for ASIC1-3 of FEE6 and 8

18:15 System wide checks ok except WR as usual
	
		 Base 		Current 	Difference
aida05 fault 	 0x500 : 	 0x56d : 	 109  
White Rabbit error counter test result: Passed 15, Failed 1

Understand the status reports as follows:-
Status bit 3 : White Rabbit decoder detected an error in the received data
Status bit 2 : Firmware registered WR error, no reload of Timestamp
Status bit 0 : White Rabbit decoder reports uncertain of Timestamp information from WR

Statistics increased at 18:02 still working on - attachment 2
      FEE temp - attachment 3
      Bias and leakage current - attachment 4

20:51 System wide checks ok - WR same as before
      Statistics still high - attachment 5
      Temperatures ok - attachment 6
      Bias and leakage currents ok - attachment 7

22:52 Statistics still high - attachment 8
      Temp ok - attachment 9
      Bias and leakage current ok - attachment 10
      System wide checks ok - WR difference still 109

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