AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40
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Message ID: 336     Entry time: Mon Feb 28 23:54:02 2022
Author: JM, EM 
Subject: Current Status, Temperature cycle 

00:51

Temperature setpoint = 116 K

Detector position IN potentionmeter = 34.89mm

Rutherford rate fluctuates, consistently above 100 counts peak height

Merger OK

Data rate = 1600 kb/sec

Leakage current = 3.235 uA

Temperatures OK

System checks OK - wr fails

         Base         Current     Difference
aida01 fault      0xab60 :      0xab8c :      44  
aida02 fault      0x88d3 :      0x88fe :      43  
aida03 fault      0x23aa :      0x23d6 :      44  
aida04 fault      0x15d7 :      0x1603 :      44  
aida05 fault      0x2f03 :      0x2f0f :      12  
White Rabbit error counter test result: Passed 0, Failed 5

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

Avg ring pressure = 4.4 E-10 mbar

01:18

Rutherford rate showed sustained drop to below 10 counts peak level. E4 was also consistently down, fluctuating in the low -9 mbar range compared to -8 mbar range previously.

Temperature increased to 125 K

01:39

Completed increase to 125k, drop to 95k and back to 116k. Rate has improved somewhat, however is still lower than before. Will monitor and see if any further change in temperature helps.

01:48

E4 pressures and rutherford rate remain low ~40 counts peak height. Decreasing temperature in 1k steps to see if any improvement.

02:05

Rates still low at decreased temperature. Setting to 140 K for 15-20 mins and then bringing back down.

02:36

Temperature brought back down, optimum temperature appears to be 118 K. E4 ~ 3E-9 mbar and rutherford rate is back around 100 counts peak heught.

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