Development of an ordinary mode multi-channel correlation reflectometer on EAST tokamak

H M Xiang; T Zhang; F Wen; H Qu; M F Wu; K N Geng; G S Li; Y M Wang; X Han; Zi X Liu; F B Zhong; K X Ye; S B Zhang; X Gao

doi:10.1063/1.5035445

Development of an ordinary mode multi-channel correlation reflectometer on EAST tokamak

Rev Sci Instrum. 2018 Oct;89(10):10H103. doi: 10.1063/1.5035445.

Authors

H M Xiang¹, T Zhang¹, F Wen¹, H Qu¹, M F Wu¹, K N Geng¹, G S Li², Y M Wang¹, X Han¹, Zi X Liu³, F B Zhong¹, K X Ye¹, S B Zhang¹, X Gao¹

Affiliations

¹ Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, Anhui 230031, People's Republic of China.
² Advanced Energy Research Center, Shenzhen University, Shenzhen 518060, People's Republic of China.
³ University of Science and Technology of China, Hefei 230026, People's Republic of China.

PMID: 30399842
DOI: 10.1063/1.5035445

Abstract

An ordinary-mode polarized multi-channel correlation reflectometer has been developed on the Experimental Advanced Superconducting Tokamak (EAST). The system with four different probing frequencies (i.e., 20.4 GHz, 24.8 GHz, 33 GHz, and 40 GHz) and two poloidally spaced receiving antennas can realize both the radial correlation measurement and the poloidal correlation measurement. These diagnostics focus on the measurement of density fluctuation in the pedestal region to investigate the turbulence transport and H-mode physics on EAST. In this article, the system hardware design, the key component tests, and the system performance are shown in detail.