AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
DESPEC
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Entry time:
Fri Mar 22 08:31:39 2024
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09.30 Systems check CAEN N1419ET only channel #0 ON, all other channels off DSSSD bias -120V leakage current -5.500uA - attachment 1 Leakage current of 5.5uA corresponds to c. 3nA/cm2/100um indicating high quality device ( assuming ambient temperature c. 21 deg C ) FEE64 temperatures OK *except* aida02 ASIC temperature - attachment 2 N.B. aida02 ASIC temperature sensor faulty - reading > 500 deg C - probably poor connection FEE64-ASIC mezzanine All system wide checks OK *except* aida04 WR decoder status 0x10 - attachment 3 WR timestamps OK - attachment 4 09.42 NH reports "195au implanting in aida, Ca 100 per spill" ASIC settings LEC/MEC slow comparator 0x64, LEC/MEC fast comparator 0xff, HEC comarator 0x2 aida02 and aida04 negative input polarity ( n+n Ohmic strips ), all other FEE64s positive input polarity 09.46 all histograms and stats zero'd ADC, DISC, PAUSE, RESUME & Correlation Scaler data items stats - attachments 5-9 per FEE64 1.8.W spectra - 20us FSR - attachments 10-11 aida08 noise significantly lower than all other FEE64s per FEE64 1.8.H spectra - attachments 12-13 data suggests 195Au ions are focussed on central Si wafer, ion energies to c. 5GeV, no evidence lower A/Z ( fission ) ions with lower energy loss per FEE64 1.8.L spectra - attachments 14-15 per FEE64 Rate Stat spectra - attachments 16-19 Merger, TapeServer - attachments 20-21 Merger idle !? Tape Server no storage mode but forwarding data at c. 1Mb/s data file R31 13.30 NH reports "beam over" DSSSD bias -120V leakage current -6.500uA - attachment 22 FEE64 temperatures OK *except* aida02 ASIC temperature - attachment 23 N.B. aida02 ASIC temperature sensor faulty - reading > 500 deg C - probably poor connection FEE64-ASIC mezzanine All system wide checks OK *except* aida05 & aida07 FPGA timestamp errors - attachment 24 aida04 WR decoder status 0x10 - attachment 25 WR timestamps OK - attachment 26 ADC data items stats - attachments 27 per FEE64 Rate spectra - attachments 28-29 per FEE64 1.8.L spectra - attachments 30-31 per FEE64 1.8.H spectra - attachments 32-33 per FEE64 1.8.W spectra - 20us FSR - attachments 34-35 Merger, TapeServer - attachments 36-37 Merger idle !? Tape Server no storage mode but forwarding data at c. 1Mb/s data file R31 20:30 AIDA Powered down DSSSD remains biased at -120V, monitor the current over the weekend (Grafana) Merger still showing idle... "no data to storage" makes xfer Links disappear? Tape server stopped 11.20 Saturday 23 March Grafana DSSSD bias/leakage current monitor screenshot - attachment 38 https://despec-vm-01.gsi.de/grafana/d/6SAfgl0Mz/aida?orgId=1&refresh=1m&from=now-2d&to=now DSSSD#1 leakage current recovered to c. pre-beam values 08.05 Monday 25 March Grafana DSSSD bias/leakage current monitor screenshot - attachment 39
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