Neutron spectrometry with NE213 liquid scintillators is commonly used in thermonuclear fusion experiments to measure the 2.45 and 14.1MeV neutron flux. We present the unfolded neutron spectrum, which was accumulated during several ohmic deuterium plasma discharges in the Frascati Tokamak Upgrade using a 2″ × 2″ NE213 scintillator. In this paper, we review the application of organic scintillator neutron spectrometers to tokamaks, focusing in particular on the comparison between NE213 and stilbene scintillators. Various aspects of the calibration technique and neutron spectra unfolding procedure are considered in the context of their application for fusion neutron spectrometry. Testing and calibration measurements have been carried out using D-D and D-T neutron generator facilities with both NE213 and stilbene scintillators. The main result from these measurements is that stilbene scintillator has better neutron energy resolution than NE213. Our stilbene detector could be used for the determination of the ion temperature (Ti) from neutron spectrum broadening in tokamak thermonuclear plasmas with Ti= 4keV and higher. © 2002 Elsevier Science B.V. All rights reserved.
|Pages (from-to)||511 - 515|
|Number of pages||5|
|Journal||Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment|
|Publication status||Published - 1 Jan 2002|
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
Kaschuck, Y., Esposito, B., Trykov, L. A., & Semenov, V. P. (2002). Fast neutron spectrometry with organic scintillators applied to magnetic fusion experiments. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 476(1-2), 511 - 515. https://doi.org/10.1016/S0168-9002(01)01499-1