Kinetic inductance neutron detector operated at near critical temperature

Vu, TheDang   ; Nishimura, Kazuma*; Shishido, Hiroaki*; Harada, Masahide   ; Oikawa, Kenichi   ; Miyajima, Shigeyuki*; Hidaka, Mutsuo*; Oku, Takayuki   ; Soyama, Kazuhiko  ; Aizawa, Kazuya  ; Kojima, Kenji M*; Koyama, Tomio*; Malins, A.  ; Machida, Masahiko  ; Ishida, Takekazu*

Our CB-KID neutron imager detects high spatial resolution neutrons transmission images by using a delay-line technique. We found that the number of events was remarkably increased with increasing the detector temperature until close to the critical temperature Tc. We investigated the properties of CB-KID at near Tc. We observed systematic changes of neutron signals as a function of the detector temperature from 4 K to Tc. The simulations modeled the sequential physical processes for B(n,)Li reactions and energy deposition by particles within CB-KID, including neutrons, He particles, Li particles, photon and electron transport.