Speaker
Description
Koki Ito$^{A}$, Kenjiro Miki$^{A}$, Satoshi Adachi$^{B}$, Shunsuke Fujimura$^{D}$, Shutaro Hanai$^{D}$, Henning Heggen$^{E}$, Takeyuki Ihara$^{D}$, Junsei Iwaki$^{D}$, Shumpei Koyama$^{A}$, Kazuki Kyo$^{A}$, Takashi Nakamura$^{D}$, Yasuto Makimura$^{D}$, Vskchintamani Sai Sisir Chandrachud Malladi$^{D}$, Sergey Linev$^{E}$, Hideaki Otsu$^{C}$, Yuma Ohsawa$^{D}$, Yoshiteru Satou$^{D}$, Yuhei Shimizu$^{A}$, Michael Traxler$^{E}$, Hiroo Umetsu$^{A}$
$^{A}$ Department of Physics, Tohoku University
$^{B}$ RARiS, Tohoku University
$^{C}$ RIKEN Nishina Center
$^{D}$ Department of Physics, Institute of Science Tokyo
$^{E}$ GSI
NEOLITH is a neutron detector designed to reduce crosstalk background and improve spectroscopic performance in multi-neutron measurements. This is achieved by tracking recoil protons generated by neutron-proton scattering within plastic scintillators using drift chambers positioned behind scintillators. In this study, we developed plastic scintillation detector modules for NEOLITH and evaluated the performance of their DAQ system.
The plastic scintillation detector requires an active volume of 950×100×40 mm$^{3}$ with both ends read out by PMTs. Light collection onto the PMTs is achieved by shaping the scintillator end faces. Since the end face shape was arbitrary, two types of detectors with different end face shapes were built to compare their focusing efficiency and resolution.
For the DAQ circuit, we are evaluating the Dogma/DiRICH circuit developed at GSI in Germany. Operational tests are being conducted using the proton 50 MeV beam at the RARiS Aobayama facility of Tohoku University, along with the radiation source.
This presentation will introduce these results and future prospects.