Speaker
Dr
Ko Abe
(ICRR, The University of Tokyo)
Description
For underground low background experiment such as direct dark matter search,
lowering the background from detector components is the one of the most important
issue, especially for sensors which occupy largest amount of the components in many case.
PMTs are used very often by many low background experiments, as a photo sensor,
we developed a new low background PMT R13111 which is operable inside liquid xenon.
We will report about the developed PMT, the RI amounts reduced less than 1/5 of R10789 used in the XMASS-I detector and the performance,
together with explanation of the RI screening facilities in Kamioka observatory.
Primary author
Dr
Ko Abe
(ICRR, The University of Tokyo)
