Neutron spectrometry of JET discharges with ICRH-acceleration of helium beam ions

Journal Article · Fri Oct 15 00:00:00 EDT 2010 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3502316· OSTI ID:22058658

Gatu Johnson, M; Sunden, E Andersson; Cecconello, M; Conroy, S; Ericsson, G; Eriksson, J; Hellesen, C; Sangaroon, S; Weiszflog, M ^[1]; Gorini, G; Nocente, M; Tardocchi, M ^[1]; Kiptily, V; Sharapov, S E ^[1]; Eester, D van ^[1]

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1. JET-EFDA, Culham Science Centre, OX14 3DB, Abingdon (United Kingdom)

Recent experiments at JET aimed at producing {sup 4}He ions in the MeV range through third harmonic ion cyclotron resonance heating (ICRH) acceleration of {sup 4}He beams in a {sup 4}He dominated plasma. MeV range D was also present through parasitic ICRH absorption on residual D. In this contribution, we analyze TOFOR neutron spectrometer data from these experiments. A consistent description of the data is obtained with d(d,n){sup 3}He and {sup 9}Be({alpha},n){sup 12}C neutron components calculated using Stix distributions for the fast D and {sup 4}He, taking finite Larmor radius effects into account and with a ICRH power partition of P{sub D}{sup RF}=0.01xP{sub 4He}{sup RF}, in agreement with TOMCAT simulations.

• OSTI ID: 22058658
• Journal Information: Review of Scientific Instruments, Vol. 81, Issue 10; Other Information: (c) 2010 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ALPHA REACTIONS
BERYLLIUM 9
CARBON 12
DEUTERON REACTIONS
HELIUM 3
HELIUM 4
HELIUM 4 BEAMS
HELIUM IONS
ICR HEATING
JET TOKAMAK
LARMOR RADIUS
MEV RANGE
NEUTRON SPECTROMETERS
NEUTRON SPECTROSCOPY
NEUTRONS
PLASMA