Fast ion D-alpha measurements using a bandpass-filtered system on EAST

J. Zhang; J. Huang; J. F. Chang; C. R. Wu; W. W. Heidbrink; M. Salewski; B. Madsen; Y. B. Zhu; M. G. von Hellermann; W. Gao; Z. Xu; B. Wan

doi:10.1063/1.5038828

Fast ion D-alpha measurements using a bandpass-filtered system on EAST

J. Zhang, J. Huang, J. F. Chang^*, C. R. Wu, W. W. Heidbrink, M. Salewski, B. Madsen, Y. B. Zhu, M. G. von Hellermann, W. Gao, Z. Xu, B. Wan

^*Corresponding author for this work

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Abstract

Based on the charge exchange reaction between fast ions and a neutral beam, fast ion features can be inferred from the spectrum of Doppler-shifted Balmer-alpha light from energetic hydrogenic atoms. In order to study the interaction between instabilities and fast-ion transport, recently we extended the fast ion D-alpha (FIDA) measurements by using a combination of a bandpass filter and a photomultiplier tube (PMT) (f-FIDA). A bandpass filter selects the desired spectral band from 651 nm to 654 nm before detection by the PMT. Preliminary data from the EAST tokamak show that the active signals have been detected from reneutralized beam ions along the vertical and tangential viewing geometries. The details will be presented in this paper to primarily address the specifications and performance of f-FIDA hardware components and preliminary FIDA measurements.

Original language	English
Article number	10D121
Journal	Review of Scientific Instruments
Volume	89
Issue number	10
Number of pages	5
ISSN	0034-6748
DOIs	https://doi.org/10.1063/1.5038828
Publication status	Published - 2018

Keywords

Optical Spectroscopy

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title = "Fast ion D-alpha measurements using a bandpass-filtered system on EAST",

abstract = "Based on the charge exchange reaction between fast ions and a neutral beam, fast ion features can be inferred from the spectrum of Doppler-shifted Balmer-alpha light from energetic hydrogenic atoms. In order to study the interaction between instabilities and fast-ion transport, recently we extended the fast ion D-alpha (FIDA) measurements by using a combination of a bandpass filter and a photomultiplier tube (PMT) (f-FIDA). A bandpass filter selects the desired spectral band from 651 nm to 654 nm before detection by the PMT. Preliminary data from the EAST tokamak show that the active signals have been detected from reneutralized beam ions along the vertical and tangential viewing geometries. The details will be presented in this paper to primarily address the specifications and performance of f-FIDA hardware components and preliminary FIDA measurements.",

keywords = "Optical Spectroscopy",

author = "J. Zhang and J. Huang and Chang, {J. F.} and Wu, {C. R.} and Heidbrink, {W. W.} and M. Salewski and B. Madsen and Zhu, {Y. B.} and {von Hellermann}, {M. G.} and W. Gao and Z. Xu and B. Wan",

year = "2018",

doi = "10.1063/1.5038828",

language = "English",

volume = "89",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Fast ion D-alpha measurements using a bandpass-filtered system on EAST

AU - Zhang, J.

AU - Huang, J.

AU - Chang, J. F.

AU - Wu, C. R.

AU - Heidbrink, W. W.

AU - Salewski, M.

AU - Madsen, B.

AU - Zhu, Y. B.

AU - von Hellermann, M. G.

AU - Gao, W.

AU - Xu, Z.

AU - Wan, B.

PY - 2018

Y1 - 2018

N2 - Based on the charge exchange reaction between fast ions and a neutral beam, fast ion features can be inferred from the spectrum of Doppler-shifted Balmer-alpha light from energetic hydrogenic atoms. In order to study the interaction between instabilities and fast-ion transport, recently we extended the fast ion D-alpha (FIDA) measurements by using a combination of a bandpass filter and a photomultiplier tube (PMT) (f-FIDA). A bandpass filter selects the desired spectral band from 651 nm to 654 nm before detection by the PMT. Preliminary data from the EAST tokamak show that the active signals have been detected from reneutralized beam ions along the vertical and tangential viewing geometries. The details will be presented in this paper to primarily address the specifications and performance of f-FIDA hardware components and preliminary FIDA measurements.

AB - Based on the charge exchange reaction between fast ions and a neutral beam, fast ion features can be inferred from the spectrum of Doppler-shifted Balmer-alpha light from energetic hydrogenic atoms. In order to study the interaction between instabilities and fast-ion transport, recently we extended the fast ion D-alpha (FIDA) measurements by using a combination of a bandpass filter and a photomultiplier tube (PMT) (f-FIDA). A bandpass filter selects the desired spectral band from 651 nm to 654 nm before detection by the PMT. Preliminary data from the EAST tokamak show that the active signals have been detected from reneutralized beam ions along the vertical and tangential viewing geometries. The details will be presented in this paper to primarily address the specifications and performance of f-FIDA hardware components and preliminary FIDA measurements.

KW - Optical Spectroscopy

U2 - 10.1063/1.5038828

DO - 10.1063/1.5038828

M3 - Journal article

C2 - 30399922

SN - 0034-6748

VL - 89

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 10

M1 - 10D121

ER -

Fast ion D-alpha measurements using a bandpass-filtered system on EAST

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