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