Ray-tracing analysis for combined Doppler backscattering and cross-polarization scattering diagnostic on the HL-2M tokamak-Reference-Cited by-同舟云学术

Ray-tracing analysis for combined Doppler backscattering and cross-polarization scattering diagnostic on the HL-2M tokamak

Published:2023-01-01 Issue:1 Volume:94 Page:
ISSN:0034-6748
Container-title:Review of Scientific Instruments
language:en
Short-container-title:

Author:

Zhou Yu¹²^ORCID,Tong Ruihai¹^ORCID,Zhong Wulyu¹^ORCID,Tan Yi²^ORCID,Shi Zhongbing¹^ORCID,Jiang Min¹^ORCID,Wen Jie¹^ORCID,Yang Zengchen¹^ORCID,Shi Peiwan¹^ORCID,Liang Anshu¹^ORCID,Yu Xin¹^ORCID,Shen Yuqi¹^ORCID,Xue Guanqun¹³^ORCID,Deng Weichu¹^ORCID

Affiliation:

1. Southwestern Institute of Physics 1 , Chengdu 610041, China

2. Department of Engineering Physics, Tsinghua University 2 , Beijing 100084, China

3. School of Physics, Dalian University of Technology 3 , Dalian 116024, China

Abstract

To measure plasma density and magnetic fluctuations on the HL-2M tokamak simultaneously, a new diagnostic system combining Doppler backscattering (DBS) and cross-polarization scattering (CPS) is under development. It is essential to understand the propagation of injected and scattered rays to support the electronic/quasi-optical design and subsequent interpretation of the detected signals of the multi-channel DBS/CPS measurements. Thus, ray-tracing analysis with the axisymmetric ray-tracing code BORAY has been performed to estimate the scattering location and wavenumbers of the density and magnetic fluctuations. In addition, the influence of accordance between toroidal and poloidal launch angles is investigated. The received DBS/CPS signal quality can be improved by matching the parallel wavenumber in the direction of magnetic field lines.

Funder

National Key Research and Development Program of China

National Natural Science Foundation of China

Publisher

AIP Publishing

Subject

Instrumentation

Link

https://pubs.aip.org/aip/rsi/article-pdf/doi/10.1063/5.0126970/16711002/013508_1_online.pdf

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