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:

Sat Mar 6 06:52:06 2021

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07:50 Pulser settings - attachment 1

07:52 System wide checks all ok
      Statistics ok - attachment 2
      Bias ok - attachment 3

09:30 The intensity of fragments is being increased
      They are trying to do a factor of 10 increase first which should take us to around 100Hz

10:00 System wide checks all ok
      Statistics - attachment 4
      Layout 1 showing implants - attachment 5
      Fee temperatures ok - attachment 6

12.00 System wide checks all okay, no failures
      Statistics (screenshot7)
      Spectrum rate (screenshot8)
      FEE temps were normal except AIDA04 had "no response" (screenshot9), reloaded several minutes later seems to read normal 
      (screenshot10)
      Leakage currents okay, increase from previous values written to sheets (screenshot12)
      
      Rechecked FEETemps this time AIDA03 had "no response" (screenshot11), seems this occurs when the reload takes longer 
than 
      usual, another reload shows all FEE temps as normal.
      
      Merger and tape server okay

14.00 System wide checks all okay, no failures
      Statistics (screenshot13)
      Spectrum rate (screenshot14)
      FEE temps normal, no issue with reload this time (screenshot15)
      Leakage currents okay still increasing, written to sheets (screenshot16)
      Merger okay ~4.5M items/sec
      Tape server ~4.5Mb/sec

14.50 Beam has been shifted to centre beam more onto AIDA (corresponds to run S452f011)

16.00 System wide checks all okay, no failures
      Statistics (screenshot17)

Spectrum rate (screenshot18)      
      FEE temps normal except AIDA08 "no response" (screenshot19), reload returns to normal (screenshot20)
      Leakage currents added to sheet (screenshot21)
      Merger okay ~4.5M items/sec
      Tape server ~4.5Mb/sec

17.17 no beam, preparing for the 190Ta setting

17:44 OH Takes over
      System wide checks all ok
      Statistics - attachment 22
      Temp ok - Attachment 23
      Bias and leakage currents ok - Attatchment 24

While MBS was not currently writing data the merger -> tapeserver link was briefly toggle
      The Directory for the experiment was then setup S452
      The merger -> Tapeserver link was then re-enabled and data forwarding to MBS has continued.

ASIC Check all ok

18:10 Started writing data to file
      File directory S452
      Run number R1_0
      Seems to have skipped a few files First full file R1_10
      Currently writing to /media/SecondDrive/TapeData
      Current free space 4211084180 kB
      Current write speed 46163 kB/s
      Time remaining until full 91222 seconds
      25 hours remaining space

18:34 DESPEC starting new MBS file
      AIDA Currently on file R1_41

19:00 DESPEC Closing file
      AIDA Currently on R1_75

19:05 Comparing last years statistics to this years

FEE	Last year	This year    Factor increase
1	60960	        183111       3.00
2	183494	        201256       1.09
3	91506	        196647       2.15
4	73914	        208290       2.81
5	31979	        63571        1.99
6	54084	        144638       2.67
7	35621	        137605       3.86
8	38626	        95858        2.48
9	264436	        225790       0.85
10	209709	        198896       0.94
11	88443	        133899       1.51
12	183493	        204996       1.12

Sum     1316265	        1994557      1.51

19:22 DESPEC opens a new file (They forgot to mention they were closing the previous file)
      AIDA on R1_104

Looking int to high write  rate to see if we can do anything to reduce it
      It isn't the correlation scaler as that is coming in at a rate of 16kHz which amounts to around 1.5MB/s - attachment 24

19:46 Much of the rate is coming from a small number of channels - attachment 25

19:17 WR Timestamp error.
      Mentioned to Nic and he said that sometimes small glitches like this are observed
		 Base 		Current 	Difference
aida01 fault 	 0x9e8b : 	 0x9e8d : 	 2  
aida02 fault 	 0x9a8f : 	 0x9a91 : 	 2  
aida03 fault 	 0x29e9 : 	 0x29eb : 	 2  
aida04 fault 	 0x7f66 : 	 0x7f68 : 	 2  
aida05 fault 	 0x1f4f : 	 0x1f51 : 	 2  
aida06 fault 	 0x8faa : 	 0x8fac : 	 2  
aida07 fault 	 0x53f0 : 	 0x53f2 : 	 2  
aida08 fault 	 0x7066 : 	 0x7068 : 	 2  
White Rabbit error counter test result: Passed 4, Failed 8

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

All other checks passed

20:52 DESPEC Stopping file
      AIDA on R1_221

20:53 DESPEC Stopped file because UCESB crashed
      AIDA on file R1_237

21:20 All system wide  checks ok
      Statistics DISC info- Attachment 27
      FEE Temp ok - Attachment 28
      Bias and leakage current ok - Attachment 29
      Statistics good events - Attachment 30

20:51 Started compressing data with command nice -n 10 gzip -v R1_*
      Have discussed with Helena and Nic about the potential issues we could run into with the high data rate
      I am not sure if MBS can keep up with this rate
      We are still writing to file though.

23:00 Correlations have been lost with the FRS DAQ and the rest of the DESPEC analysis
23:10 UCESB restarted and correlations have been regained. Verified with the implant-FRS time difference peak at 13us

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