talk - International Workshop on Double Beta Decay and Neutrino
talk - International Workshop on Double Beta Decay and Neutrino
talk - International Workshop on Double Beta Decay and Neutrino
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Selective Trigger<br />
Selective trigger for CaF 2<br />
by using “threshold for integrated signal”<br />
in poster sessi<strong>on</strong> by M. Saka<br />
Ratio Partial/Full<br />
1<br />
0.8<br />
0.6<br />
0.4<br />
0.2<br />
0<br />
with normal trigger<br />
CaF 2<br />
LS<br />
500 1000 1500 2000 2500 3000 3500 4000 4500<br />
CaF 2<br />
Energy(keV)<br />
at 2600keV<br />
No LS Events<br />
Threshold<br />
for integrated signal<br />
well works.<br />
Pulse Height<br />
800<br />
700<br />
600<br />
500<br />
400<br />
300<br />
200<br />
100<br />
0<br />
Pulse Height<br />
0 250 500 750 1000 1250 1500 1750 2000<br />
Time(2nsec)<br />
800<br />
700<br />
600<br />
500<br />
400<br />
300<br />
200<br />
100<br />
0<br />
CaF 2 Event<br />
CaF 2 + LS<br />
Ratio<br />
0 250 500 750 1000 1250 1500 1750 2000<br />
Time(2nsec)<br />
1<br />
0.8<br />
0.6<br />
0.4<br />
Event Distributi<strong>on</strong> with Trigger for CaF 2<br />
LS Regi<strong>on</strong><br />
CaF 2 +LS<br />
0.2<br />
20<br />
CaF 2<br />
0<br />
0 500 10001500200025003000350040004500 0 Energy(keV)<br />
We obtained . . .<br />
・High efficiency for CaF 2 Scintillator, Low efficiency for LS<br />
80<br />
60<br />
40<br />
at 2600keV
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