The magnetic recoil spectrometer for measurements of the absolute neutron spectrum at OMEGA and the NIF
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States)
- Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
The neutron spectrum produced by deuterium-tritium (DT) inertial confinement fusion implosions contains a wealth of information about implosion performance including the DT yield, ion-temperature, and areal-density. The Magnetic Recoil Spectrometer (MRS) has been used at both the OMEGA laser facility and the National Ignition Facility (NIF) to measure the absolute neutron spectrum from 3 to 30 MeV at OMEGA and 3 to 36 MeV at the NIF. These measurements have been used to diagnose the performance of cryogenic target implosions to unprecedented accuracy. Interpretation of MRS data requires a detailed understanding of the MRS response and background. This paper describes ab initio characterization of the system involving Monte Carlo simulations of the MRS response in addition to the commission experiments for in situ calibration of the systems on OMEGA and the NIF.
- OSTI ID:
- 22105506
- Journal Information:
- Review of Scientific Instruments, Vol. 84, Issue 4; Other Information: (c) 2013 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
COMPUTERIZED SIMULATION
DEUTERIUM
ELECTRON TEMPERATURE
INERTIAL CONFINEMENT
ION TEMPERATURE
MONTE CARLO METHOD
NEUTRON SPECTRA
NEUTRON SPECTROMETERS
PLASMA
PLASMA DIAGNOSTICS
THERMONUCLEAR REACTORS
TRITIUM
US NATIONAL IGNITION FACILITY