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

M. Gatu Johnson; E. Andersson Sund́n; M. Cecconello; S. Conroy; G. Ericsson; J. Eriksson; G. Gorini; C. Hellesen; V. Kiptily; M. Nocente; S. Sangaroon; S. E. Sharapov; M. Tardocchi; D. Van Eester; M. Weiszflog

doi:10.1063/1.3502316

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

M. Gatu Johnson, E. Andersson Sund́n, M. Cecconello, S. Conroy, G. Ericsson, J. Eriksson, G. Gorini, C. Hellesen, V. Kiptily, M. Nocente, S. Sangaroon, S. E. Sharapov, M. Tardocchi, D. Van Eester, M. Weiszflog

Laboratory for Plasma Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Recent experiments at JET aimed at producing ⁴He ions in the MeV range through third harmonic ion cyclotron resonance heating (ICRH) acceleration of ⁴He beams in a ⁴He 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) ³He and ⁹Be(α,n)¹²C neutron components calculated using Stix distributions for the fast D and ⁴He, taking finite Larmor radius effects into account and with a ICRH power partition of P_D^RF =0.01× P_4He^RF, in agreement with TOMCAT simulations.

Original language	English
Article number	10D336
Journal	Review of Scientific Instruments
Volume	81
Issue number	10
DOIs	https://doi.org/10.1063/1.3502316
Publication status	Published - Oct 2010

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Johnson, M. G., Sund́n, E. A., Cecconello, M., Conroy, S., Ericsson, G., Eriksson, J., Gorini, G., Hellesen, C., Kiptily, V., Nocente, M., Sangaroon, S., Sharapov, S. E., Tardocchi, M., Van Eester, D., & Weiszflog, M. (2010). Neutron spectrometry of JET discharges with ICRH-acceleration of helium beam ions. Review of Scientific Instruments, 81(10), Article 10D336. https://doi.org/10.1063/1.3502316

@article{5659381dbb004b87acfbc4ee1b70b47e,

title = "Neutron spectrometry of JET discharges with ICRH-acceleration of helium beam ions",

abstract = "Recent experiments at JET aimed at producing 4He ions in the MeV range through third harmonic ion cyclotron resonance heating (ICRH) acceleration of 4He beams in a 4He 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) 3He and 9Be(α,n)12C neutron components calculated using Stix distributions for the fast D and 4He, taking finite Larmor radius effects into account and with a ICRH power partition of PDRF =0.01× P4HeRF, in agreement with TOMCAT simulations.",

author = "Johnson, {M. Gatu} and Sun{\'d}n, {E. Andersson} and M. Cecconello and S. Conroy and G. Ericsson and J. Eriksson and G. Gorini and C. Hellesen and V. Kiptily and M. Nocente and S. Sangaroon and Sharapov, {S. E.} and M. Tardocchi and {Van Eester}, D. and M. Weiszflog",

note = "Funding Information: This work, supported by the European Communities under the contract of Association between EURATOM and VR, was carried out under the framework of the European Fusion Development Agreement. The views and opinions expressed herein do not necessarily reflect those of the European Commission. ",

year = "2010",

month = oct,

doi = "10.1063/1.3502316",

language = "English",

volume = "81",

journal = "Review of Scientific Instruments",

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number = "10",

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Johnson, MG, Sund́n, EA, Cecconello, M, Conroy, S, Ericsson, G, Eriksson, J, Gorini, G, Hellesen, C, Kiptily, V, Nocente, M, Sangaroon, S, Sharapov, SE, Tardocchi, M, Van Eester, D & Weiszflog, M 2010, 'Neutron spectrometry of JET discharges with ICRH-acceleration of helium beam ions', Review of Scientific Instruments, vol. 81, no. 10, 10D336. https://doi.org/10.1063/1.3502316

TY - JOUR

T1 - Neutron spectrometry of JET discharges with ICRH-acceleration of helium beam ions

AU - Johnson, M. Gatu

AU - Sund́n, E. Andersson

AU - Cecconello, M.

AU - Conroy, S.

AU - Ericsson, G.

AU - Eriksson, J.

AU - Gorini, G.

AU - Hellesen, C.

AU - Kiptily, V.

AU - Nocente, M.

AU - Sangaroon, S.

AU - Sharapov, S. E.

AU - Tardocchi, M.

AU - Van Eester, D.

AU - Weiszflog, M.

N1 - Funding Information: This work, supported by the European Communities under the contract of Association between EURATOM and VR, was carried out under the framework of the European Fusion Development Agreement. The views and opinions expressed herein do not necessarily reflect those of the European Commission.

PY - 2010/10

Y1 - 2010/10

N2 - Recent experiments at JET aimed at producing 4He ions in the MeV range through third harmonic ion cyclotron resonance heating (ICRH) acceleration of 4He beams in a 4He 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) 3He and 9Be(α,n)12C neutron components calculated using Stix distributions for the fast D and 4He, taking finite Larmor radius effects into account and with a ICRH power partition of PDRF =0.01× P4HeRF, in agreement with TOMCAT simulations.

AB - Recent experiments at JET aimed at producing 4He ions in the MeV range through third harmonic ion cyclotron resonance heating (ICRH) acceleration of 4He beams in a 4He 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) 3He and 9Be(α,n)12C neutron components calculated using Stix distributions for the fast D and 4He, taking finite Larmor radius effects into account and with a ICRH power partition of PDRF =0.01× P4HeRF, in agreement with TOMCAT simulations.

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VL - 81

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M1 - 10D336

ER -

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

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