AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
CARME
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Entry time:
Fri Feb 9 07:57:38 2024
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<p>8:58</p> <p>System wide checks okay, except</p> <p> <br /> Base Current Difference<br /> aida08 fault 0x0 : 0xc : 12 <br /> aida09 fault 0x0 : 0xb : 11 <br /> FPGA Timestamp error counter test result: Passed 14, Failed 2<br /> If any of these counts are reported as in error<br /> The ASIC readout system has detected a timeslip.<br /> That is the timestamp read from the time FIFO is not younger than the last</p> <p>Temperatures okay</p> <p>Attatchment 1: Layout 7 Waveforms</p> <p>Attatchment 2: Temperatures</p> <p>Attatchment 3: Layout 8 Waveforms</p> <p>Attatchment 4: Layout 2 counter okay</p> <p>Attatchment 5: Layout 4 spectrum okay</p> <p>Attatchment 6: Leakage current okay</p> <p>Switched to run 10 (run 9 is overnight background)</p> <p> </p> <p>10:00 Target pressure on. Attachment 7</p> <p>Beam on target</p> <p>Observe low counts. Only aida4 showing anything (attachment 8)</p> <p>See a peak around 19 MeV in LowEnergyExratedssd0 (can only see in the dssd0) that is assumed to be Rutherford scattering - Attachment 12</p> <p>Temperatures ok</p> <p>Wavefroms on attatchment 9 show only signals from aida04 - attachment 9</p> <p>/////// UPDATE ////////</p> <p>Peak observed is not from Rutherford, we think it is beam (or part of it) hitting the detector</p> <p>Attachment 10 shows waveforms after the beam was turned off -> counts in aida 4 are gone.</p> <p>Beam off = no peak at 19 MeV for LowEnergyExdssd0.</p> <p>Leakage current ok (attachment 11)</p> <p>//// BEAM ON AGAIN UPDATE ////</p> <p>Still see peak at 20 MeV, see attachment 13</p> <p>Peak is not in dssds 1,2,3 only in dssd 0 (Top left detector) (attatchments 14,15,16 respectively)</p> <p>Leakage currents OK (attatchment 17)</p> <p>Attachment 18: LowEnergyXYtotalDSSD0 plot showing all hits in one spot (this is with BEAM AND TARGET on)</p> <p>TEST: Turning off target while beam is running, can still see hotspot in DSSD0 but no others, so definitely beam related. (attatchment 18)</p> <p>Tom's estimate: 10^6 particles in 10 minutes - not as many as can be handled</p> <p>/////// UPDATE ////////</p> <p>No beam, no target (target off)</p> <p>All checks ok (see attachment 20 and 21 for rates and temperatures)</p> <p>Attachment 22: Layout 7 waveforms</p> <p>Attatchment 23: Layout 8 waveforms</p> <p>Attachment 24: Layout 2 waveforms </p> <p>Attachment 25: Layout 1 waveforms (rate)</p> <p>Atatchment 26: Leakage current</p> <p>Attachment 27: LowEnergyExRatedssd 0,1,2,3 respectively</p> <p>Note: Data similar to that seen in DSSD0 (19 MeV peak) is not observed in MIDAS for the other DSSDs -> Issue is not related to the monitoring code </p> <p> </p>
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