ELOG DESPEC

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

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Entry time:	Sat Mar 29 11:41:53 2025
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08:00 OH Takes over Statistics still look good from yesterday. Rate is still down. Dead time in FEEs 2 and 4 is 2.04% System wide checks clock ok Base Current Difference aida05 fault 0x4da : 0x500 : 38 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 Baseline reset FPGA check ok Stats - attachment 1 Temp - attachment 2 Bias - attachment 3 08:11 With the decreased noise I am investigating whether we can lower the thresholds on DSSD2 y strips. I have set them to 0x19 on ASICS 1-3 and 0x64 on ASIC4 The results of the test appear to indicate that it is the network link that we are saturating causing dead time * Before After FEE DT (s) Dead time % DT (s) Dead time % 0 0.013 0.004184451 0.026 0.010025681 1 6.352 2.04458693 4.097 1.57981599 2 0.295 0.09495484 0.292 0.112596112 3 6.349 2.043621288 8.255 3.183153771 4 0.021 0.006759497 0.03 0.011568094 5 0.285 0.091736032 3.388 1.306423377 6 0.02 0.006437616 0.149 0.057454865 7 1.219 0.392372712 2.133 0.822491459 8 1.137 0.365978485 0.457 0.176220627 9 0 0 0 0 10 1.633 0.525631369 1.545 0.595756823 11 0.061 0.01963473 0.166 0.064010118 12 0.059 0.018990968 0.085 0.032776265 13 0 0 0 0 14 0.016 0.005150093 0.023 0.008868872 15 0.282 0.09077039 0.168 0.064781324 Note that the dead time for FEE6 and 8 remains fairly low but the dead time for FEE4 has increased 09:00 They are stopping the run to decrease the bias on the bPlast detector 09:25 No noticable change in AIDA They will now begin to change the spill structure. 09:46 While they are optimising the 1s spill structure raised the thresholds of FEE6 and 8 back to 0x20. Will start from here when optimising the thresholds post spill change 10:21 Beam is back on AIDA 10:39 System wide checks. - ADC calibration check failed (this is anticipated because waveforms are off). - 1 Failed test in White Rabbit: Base Current Difference aida05 fault 0x500 : 0x506 : 6 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 - All other systems passed 11:00 Stats - attachment 4 Temp - attachment 5 Bias - attachment 6 12:46 System wide checks - ADC calibration check failed (this is anticipated because waveforms are off). - 1 Failed test in White Rabbit: Base Current Difference aida05 fault 0x500 : 0x50b : 11 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 - All other systems passed 14:36 System wide checks - ADC calibration check failed (this is anticipated because waveforms are off). - 1 Failed test in White Rabbit: Base Current Difference aida05 fault 0x500 : 0x50f : 15 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 - All other systems passed Encoding**: HTML ELCode plain Suppress Email notification

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