Figure 2
From: Proof-of-principle experiment for laser-driven cold neutron source
Osaka laser neutron source (LDNS). The cold neutron source is produced using cryogenically cold hydrogen moderator placed at \(\sim \hbox {cm}\) from the catcher target. The system developed at ILE is using helium fluid to remove the heat from the cell via attached wires brought from the cryohead. The injected \(H_2\) was cooled in less than a day, while having its temperature and pressure being checked using superconducting temperature sensors and flow/monitor controllers, respectively. A wing-shaped pre-moderator was added to catcher to thermalize the off-axis neutrons. After each shot, the fast neutron signal was recorded using the fast neutron detector sitting at 15\(^\circ\), 8.2 m and He-3 proportional counters located on axis at 3.28 m.
