Prototypes of several National Ignition Facility (NIF) neutron time-of-flight detectors have been built and tested on OMEGA. One group uses a plastic scintillator coupled with a microchannel plate (MCP) photomultiplier tube (PMT), either a single-stage (gain up to ) MCP PMT and a two-stage (gain up to ) MCP PMT. Two ultrafast scintillators—BC-422 and BC-422Q—were used. Another prototype is based on a synthetic diamond wafer produced by the chemical vapor deposition. The detectors were tested on DD and DT neutron-producing implosions on OMEGA. Based on the results of these tests, a set of detectors is proposed for use on the NIF to measure ion temperature and DD and DT neutron yields from to .
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