[Table of Contents]

Plasma and Fusion Research

Volume 6, 1302018 (2011)

Letters

An in-situ Relative Calibration Method for Thomson Scattering Diagnostics Using a Double-Pass Scattering System
Hiroshi TOJO, Takaki HATAE and Kiyoshi ITAMI
Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan
(Received 12 January 2011 / Accepted 24 February 2011 / Published 10 May 2011)

Abstract

A new method of in-situ relative calibration for Thomson scattering diagnostics using a double-pass scattering system is proposed. The ratio of scattered light signals between the first and second pass depends on electron temperature (Te), making it possible to evaluate Te without considering relative transmissivities. The relative transmissivities of each spectral channel can be determined at the same time. The feasibility of the method based on parameters in a JT-60SA Thomson scattering diagnostic is also examined.

Keywords

Thomson scattering, double-pass beam, calibration, YAG laser, JT-60SA

DOI: 10.1585/pfr.6.1302018

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This paper may be cited as follows:

Hiroshi TOJO, Takaki HATAE and Kiyoshi ITAMI, Plasma Fusion Res. 6, 1302018 (2011).