Phase-space resolved measurement of 2nd harmonic ion cyclotron heating using FIDA tomography at the ASDEX Upgrade tokamak: Paper

M. Weiland; R. Bilato; B. Geiger; P. A. Schneider; G. Tardini; M. Garcia-Muñoz; F. Ryter; Mirko Salewski; H. Zohm

doi:10.1088/1741-4326/aa7e0a

Phase-space resolved measurement of 2nd harmonic ion cyclotron heating using FIDA tomography at the ASDEX Upgrade tokamak: Paper

M. Weiland, R. Bilato, B. Geiger, P. A. Schneider, G. Tardini, M. Garcia-Muñoz, F. Ryter, Mirko Salewski, H. Zohm

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Abstract

Recent upgrades to the FIDA (fast-ion D-alpha) diagnostic at ASDEX Upgrade allow to reconstruct the fast-ion phase space at several radial positions with decent energy and pitch resolution. These new diagnostic capabilities are applied to study the physics of 2nd harmonic ion cyclotron heating, which is a foreseen heating scenario for ITER. In particular, the acceleration of deuterium beam ions above the injection energy by absorption of ion cyclotron waves at the 2nd harmonic is investigated and compared to theoretical predictions by the TORIC-SSFPQL and TORIC-NUBEAM code packages. Furthermore, comparisons to other fast-ion diagnostics (neutron yield and neutral particle analyzers) are discussed.

Original language	English
Article number	116058
Journal	Nuclear Fusion
Volume	57
Issue number	11
Number of pages	15
ISSN	0029-5515
DOIs	https://doi.org/10.1088/1741-4326/aa7e0a
Publication status	Published - 2017

Keywords

Velocity space tomography
Fast ions
Spectroscopy
Neutron rate
Neutral particle analyzer
Zero orbit width
Quasi-linear

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title = "Phase-space resolved measurement of 2nd harmonic ion cyclotron heating using FIDA tomography at the ASDEX Upgrade tokamak: Paper",

abstract = "Recent upgrades to the FIDA (fast-ion D-alpha) diagnostic at ASDEX Upgrade allow to reconstruct the fast-ion phase space at several radial positions with decent energy and pitch resolution. These new diagnostic capabilities are applied to study the physics of 2nd harmonic ion cyclotron heating, which is a foreseen heating scenario for ITER. In particular, the acceleration of deuterium beam ions above the injection energy by absorption of ion cyclotron waves at the 2nd harmonic is investigated and compared to theoretical predictions by the TORIC-SSFPQL and TORIC-NUBEAM code packages. Furthermore, comparisons to other fast-ion diagnostics (neutron yield and neutral particle analyzers) are discussed.",

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author = "M. Weiland and R. Bilato and B. Geiger and Schneider, {P. A.} and G. Tardini and M. Garcia-Mu{\~n}oz and F. Ryter and Mirko Salewski and H. Zohm",

year = "2017",

doi = "10.1088/1741-4326/aa7e0a",

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T2 - Paper

AU - Weiland, M.

AU - Bilato, R.

AU - Geiger, B.

AU - Schneider, P. A.

AU - Tardini, G.

AU - Garcia-Muñoz, M.

AU - Ryter, F.

AU - Salewski, Mirko

AU - Zohm, H.

PY - 2017

Y1 - 2017

N2 - Recent upgrades to the FIDA (fast-ion D-alpha) diagnostic at ASDEX Upgrade allow to reconstruct the fast-ion phase space at several radial positions with decent energy and pitch resolution. These new diagnostic capabilities are applied to study the physics of 2nd harmonic ion cyclotron heating, which is a foreseen heating scenario for ITER. In particular, the acceleration of deuterium beam ions above the injection energy by absorption of ion cyclotron waves at the 2nd harmonic is investigated and compared to theoretical predictions by the TORIC-SSFPQL and TORIC-NUBEAM code packages. Furthermore, comparisons to other fast-ion diagnostics (neutron yield and neutral particle analyzers) are discussed.

AB - Recent upgrades to the FIDA (fast-ion D-alpha) diagnostic at ASDEX Upgrade allow to reconstruct the fast-ion phase space at several radial positions with decent energy and pitch resolution. These new diagnostic capabilities are applied to study the physics of 2nd harmonic ion cyclotron heating, which is a foreseen heating scenario for ITER. In particular, the acceleration of deuterium beam ions above the injection energy by absorption of ion cyclotron waves at the 2nd harmonic is investigated and compared to theoretical predictions by the TORIC-SSFPQL and TORIC-NUBEAM code packages. Furthermore, comparisons to other fast-ion diagnostics (neutron yield and neutral particle analyzers) are discussed.

KW - Velocity space tomography

KW - Fast ions

KW - Spectroscopy

KW - Neutron rate

KW - Neutral particle analyzer

KW - Zero orbit width

KW - Quasi-linear

U2 - 10.1088/1741-4326/aa7e0a

DO - 10.1088/1741-4326/aa7e0a

M3 - Journal article

SN - 0029-5515

VL - 57

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 11

M1 - 116058

ER -

Phase-space resolved measurement of 2nd harmonic ion cyclotron heating using FIDA tomography at the ASDEX Upgrade tokamak: Paper

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Keywords

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