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Communications | UPS identified and ordered (3 UPS with 900W x 7min for DAQ PCs, 1 UPS with 450W x 7 min for 28V PS); should be delivered wednesday |
Online&DAQ Report | CU DAQ maximum readout rate with full error parsing in the code is 300Hz average, corresponding to 4KHz instantenous rate during the spill (our spill structure is 3 x 0.4s spills every 16 s). Indeed runs were taken with instantenous rates up to 2KHz. This max value will be checked with a random trigger generator (low threshold scintillator) and with the beam as soon as it gets back. |
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Ric on TEM errors: come in a variety (TKR fifo full, phasing errors, parity errors ...); some are just fake errors connected to the so-called TEM-bug in the CU TEM (which are not flight). TKR fifo full errors probably connected to beam conditions producing showers in the last si det upstream the beam and before the CU (see also offline reports), in any case the almost full flags in the GTCC buffer was changed to 0X3E from 0x32 (from E Siskind) to allow for more hits in the tracker before back-pressure events and slow readout rate. Phasing errors found in 1 run only so far, so might be connected to wrong settings - a run with beam shooting across towers should be taken to check if phase errors appear in such conditions. In summary, if we keep trigger rate below 300Hz average we should run w/o errors and be limited by the AD DAQ deadtime ( |
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approx 1 ms) |
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OfflineReport | - Francesco: acdrecon and adrecon in new BTRelease; bug fix in the svac ntuple to avoid overwriting first 1000 evts | Offline Report | Benoit reported on an anomalous high number of hits in run 811, but also in another run for which the si det al frame was not in the beam |
Program Progrm | - CU DAQ max readout rate test with random generated pulses | ||
Notes | Action items |
July 30 10.30AM - T9 barrack
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Communications | - Magnet failure: MNP17 colling system failure at 1AM stopped data taking for several hours but no damage on hardware. Physics restarted after 2 hours w/o silicon tagger for CAL calibrations. Magnet repaired in the morning | |
Online Report | - DAQ sync studies going on | |
Offline Report | Francesco: | |
Program | - Complete DAQ sync studies | |
Notes | - Fill elogbook | ]]></ac:plain-text-body></ac:structured-macro> |