Speaker
Description
ZICOS is a future experiment for 0$\nu \beta \beta$ of $^{96}$Zr nuclei. In order to achieve sensitivity over $10^{27}$ years, ZICOS will use tons of $^{96}$Zr, and need to remove $^{208}$Tl backgrounds as observed by KamLAND-Zen one order of magnitude. For this purpose, we have developed new technique to distinguish the signal and background using topology of Cherenkov light. We have measured directly this topology using HUNI-ZICOS detector and the results clearly indicated topology as effective even 1MeV electron. Also the pulse shape discrimination for the extraction of PMT which receives Cherenkov lights in the liquid scintillator has been established. In order to confirm above technique, we have demonstrated using $\beta - \gamma$ event such as $^{208}$Tl $\beta$ decay using $^{60}$Co source using UNI-ZICOS detector.
Here we will report present status and results obtained by recent measurement.
| Collaboration | Super-Kamiokande |
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