The coincidence counting technique for orders of magnitude background reduction in data obtained with the magnetic recoil spectrometer at OMEGA and the NIF
A magnetic recoil spectrometer (MRS) has been built and successfully used at OMEGA for
measurements of down-scattered neutrons (DS-n), from which an areal density in both warm-
capsule and cryogenic-DT implosions have been inferred. Another MRS is currently being
commissioned on the National Ignition Facility (NIF) for diagnosing low-yield tritium-
hydrogen-deuterium implosions and high-yield DT implosions. As CR-39 detectors are used
in the MRS, the principal sources of background are neutron-induced tracks and intrinsic …
measurements of down-scattered neutrons (DS-n), from which an areal density in both warm-
capsule and cryogenic-DT implosions have been inferred. Another MRS is currently being
commissioned on the National Ignition Facility (NIF) for diagnosing low-yield tritium-
hydrogen-deuterium implosions and high-yield DT implosions. As CR-39 detectors are used
in the MRS, the principal sources of background are neutron-induced tracks and intrinsic …
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