Calibration run for my analysis: 10578
Calibration run for monitor run: ?????
Summary: The single high energy hit is rejected because of ST coincidences,
although it apparently didn't form a Bari trigger. Probably a true corner
clipper. Three of the remaining 5 hits come from "hot" boxes, and one
looks clearly like a coincidence of radioactivities because of an eight
meter discrepancy between TDCZ and ADCZ.
First hit: Marginally outside 200 cm ADCZ-TDCZ tolerance, but otherwise
reasonable. I think the calibrations are way off for this
box though. See note below regarding a second candidate
burst I found in this run.
1 81 55 0.0000 14.07 -166.44
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HIT NO. BOX TIME ENERGY POSITION CUT
1 55 0.000000 14.34 -162.79
14.09 60.59 ADCZ
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Second hit: Looks like a clean 12 MeV hit, although 3B10 is a hot box.
4 709 210 0.2468 11.97 88.01
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HIT NO. BOX TIME ENERGY POSITION CUT
4 210 0.246832 11.77 95.43
11.61 -6.00 *Kept*
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Third hit: Something messed up the TDCZ calibrations between the constants
the monitor uses vs. those on VAXGS. Probably misreconstructed
if the ADCZ position (114cm) is to be trusted. I'll check my
TDCZ reconstruction logic.
5 84 67 0.4345 10.93 -301.36
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HIT NO. BOX TIME ENERGY POSITION CUT
5 67 0.434465 7.88 3564.88
8.84 114.09 TDCZ
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Fourth hit: Looks clean, although 3B03 is hot.
12 710 203 1.2342 11.86 313.42
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HIT NO. BOX TIME ENERGY POSITION CUT
12 203 1.234216 11.91 304.43
12.20 247.29 *Kept*
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Fifth hit: A muon. I find at least three ST wires hit and one adjacent
to the box.
15 85 54 1.5259 37.57 -50.99
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HIT NO. BOX TIME ENERGY POSITION CUT
16 54 1.525874 38.09 -53.42
37.80 -103.17 NearST
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Sixth hit: Coincidence of radioactivities. The ADCZ and TDCZ are at
complete oposite ends of the tank.
16 775 172 1.6033 12.73 -398.81
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HIT NO. BOX TIME ENERGY POSITION CUT
17 172 1.603358 8.45 -435.60
5.91 409.60 ADCZ
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Side note: My analysis also finds a candidate burst in the same run, but
with only three hits in one second, two of them on the same box. I expect
the calibration constants for box 55 are a bit off. This box has a very
high trigger rate, and a very high rate of "12 MeV" events. It has more
than 100 times the normal rate of unrejected 12 MeV events.
Large burst of events found!
Time window of search = 1 sec.
Energy Threshold = 12 MeV.
Number of hits: 3 Report threshold = 2
Time of first hit in burst: 25-Aug-95 23:46:46.8406
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HIT NO. BOX TIME ENERGY POSITION CUT
1 55 0.000000 12.78 29.52
12.73 76.97 *Kept*
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HIT NO. BOX TIME ENERGY POSITION CUT
2 54 0.075164 12.45 491.58
14.41 377.22 *Kept*
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HIT NO. BOX TIME ENERGY POSITION CUT
13 55 0.991018 12.62 27.50
12.54 93.35 *Kept*