Only the first of four hits looks like a valid backgrond hit. The second
hit is very close to the tank end, and reconstructs to either 2, 6.6 or
10.8 MeV depending on what z is used. I believe the 6.6 MeV. My method is
to use the energy reconstructed from the ADCZ, which turns out to be
essentially the same as the energy reconstructed by the far tank end.
Since a 30 cm position difference can cause a factor of five or more error
in energy reconstructed at the near tank end, the far end has to give a
better answer when the hit is close to one end. If |TDCZ|.gt.500 and the
ADCZ is within 200 cm of the TDCZ, I use the ADCZ energy. The remaining
two hits have ADCZ vs. TDCZ discrepancies of more than 4 meters.
Rich
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1 398 203 0.0000 10.77 44.24
HIT NO. BOX TIME ENERGY POSITION CUT
1 203 0.000000 10.77 43.79
10.77 7.10 *Kept*
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3 400 272 0.0522 10.80 -530.87
HIT NO. BOX TIME ENERGY POSITION CUT
4 272 0.052224 2.24 -565.02
6.62 -557.95 *Kept*
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4 401 264 0.0535 10.61 -373.46
HIT NO. BOX TIME ENERGY POSITION CUT
5 264 0.053464 10.58 -366.87
9.17 62.78 ADCZ
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5 402 207 0.1361 17.92 519.51
HIT NO. BOX TIME ENERGY POSITION CUT
6 207 0.136112 17.62 519.91
11.63 -31.12 ADCZ
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