Reconstruction method of local density fluctuation for heavy ion beam probe measurements | Zendy

H. Nakano | Zendy; A. Fujisawa | Zendy; A. Shimizu | Zendy; S. Ohshima | Zendy; H. Iguchi | Zendy; Y. Yoshimura | Zendy; T. Minami | Zendy

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Reconstruction method of local density fluctuation for heavy ion beam probe measurements

Author(s) -

H. Nakano,

A. Fujisawa,

A. Shimizu,

S. Ohshima,

H. Iguchi,

Y. Yoshimura,

T. Minami

Publication year - 2007

Publication title -

review of scientific instruments

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.605

H-Index - 165

eISSN - 1089-7623

pISSN - 0034-6748

DOI - 10.1063/1.2745233

Subject(s) - physics , plasma , toroid , spectral density , beam (structure) , atomic physics , amplitude , plasma diagnostics , measure (data warehouse) , computational physics , ion , tokamak , power density , power (physics) , optics , nuclear physics , quantum mechanics , statistics , mathematics , database , computer science

Heavy ion beam probe (HIBP) is an excellent diagnostic to measure the density and potential fluctuations simultaneously in magnetically confined plasmas. However, it has been well known that the density fluctuation measured with the HIBP is not local but contains the fluctuations along the beam orbits. In this article, a method is proposed to evaluate local density fluctuation in the HIBP measurements by removing the well-known path integral effects. The reconstructed density fluctuation amplitude and power spectrum are shown, for example, by applying the proposed method on the density fluctuation measurement data obtained in a toroidal helical plasma, Compact Helical System

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