Design of a Backscatter 14-MeV Neutron Time-of-Flight Spectrometer for Experiments at ITER
2014 (English)In: Fusion Reactor Diagnostics / [ed] Gorini, G; Orsitto, FP; Sozzi, C; Tardocchi, M, 2014, Vol. 1612, 145-148 p.Conference paper (Refereed)
Neutron energy spectrometry diagnostics play an important role in present-day experiments related to fusion energy research. Measurements and thorough analysis of the neutron emission from the fusion plasma give information on a number of basic fusion performance quantities, on the condition of the neutron source and plasma behavior. Here we discuss the backscatter Time-of-Flight (bTOF) spectrometer concept as a possible instrument for performing high resolution measurements of 14 MeV neutrons. The instrument is based on two sets of scintillators, a first scatterer exposed to a collimated neutron beam and a second detector set placed in the backward direction. The scintillators of the first set are enriched in deuterium to achieve neutron backscattering. The energy resolution and efficiency of a bTOF instrument have been determined for various geometrical configurations. A preliminary design of optimal geometry for the two scintillator sets has been obtained by Monte Carlo simulations based on the MCNPX code.
Place, publisher, year, edition, pages
2014. Vol. 1612, 145-148 p.
, AIP Conference Proceedings, ISSN 0094-243X ; 1612
neutron flux, plasma, back-scattering, time-of-flight, spectrometer
IdentifiersURN: urn:nbn:se:uu:diva-237654DOI: 10.1063/1.4894042ISI: 000343712300027ISBN: 978-0-7354-1248-4OAI: oai:DiVA.org:uu-237654DiVA: diva2:770961
International Conference on Fusion Reactor Diagnostics, SEP 09-13, 2013, Varenna, ITALY