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 29 11:32:01 2025
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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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