The evaluation test for the newly developed high-resolution neutron detector HIME (HIgh-resolution detector array for Multi neutron Events)

I report the evaluation of the electronics and light guides which will be used in the newly developed high-resolution neutron detector HIME (HIgh-resolution detector array for Multi neutron Events). HIME has been developed to study the strong neutron-neutron correlation called dineutron which requires high resolution both in the time and position. The high resolution for the two neutrons emitted in the reaction of very neutron-rich nuclei in required for HIME. HIME is composed of 50 pieces of plastic scintillators, each of which has a size of 2cm(t)×4cm(w)×1m(H), arranged into 5 Layers installed alternately. Such high-granularity of HIME enables us to perform recoil proton tracking which can help us to identify multi-neutron events more efficiency and to improve the angular resolution. Currently, we are making a test of the electronics and light guide of HIME to optimize its performance. I will report the detail of such the evaluation test.