Speaker
Description
The ZnWO4 crystal has been noted for its directional dependence in scintillation light output based on crystal orientation. Consequently, we are actively developing a direction-sensitive dark matter detector that utilizes this anisotropic response of ZnWO4 crystals.
In this presentation, we will share our findings from the measurement of the quenching factor and the anisotropic response of ZnWO4 crystals using a mono-energetic neutron source provided by the National Institute of Advanced Industrial Science and Technology in Japan. Our discussion will encompass the relationship between scintillation decay time constants and scintillation anisotropy. Additionally, we will present the results of our assessment of radiation impurities in a 2" crystal and estimate the sensitivity of the (currently directionally insensitive) dark matter search.
