Design of collection optics and polychromators for a JT-60SA Thomson scattering system

Journal Article · Fri Oct 15 00:00:00 EDT 2010 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3494259· OSTI ID:22055794

Tojo, H; Hatae, T; Sakuma, T; Hamano, T; Itami, K ^[1]; Aida, Y; Suitoh, S; Fujie, D ^[2]

---

1. Japan Atomic Energy Agency, 801-1 Mukoyama, Naka 311-0193 (Japan)
2. Showa Optronics Co., Ltd., 1-22-1 Hakusan, Midori-ku, Yokohama 226-0006 (Japan)

This paper presents designs of collection optics for a JT-60SA Thomson scattering system. By using tangential (to the toroidal direction) YAG laser injection, three collection optics without strong chromatic aberration generated by the wide viewing angle and small design volume were found to measure almost all the radial space. For edge plasma measurements, the authors optimized the channel number and wavelength ranges of band-pass filters in a polychromator to reduce the relative error in T{sub e} by considering all spatial channels and a double-pass laser system with different geometric parameters.

• OSTI ID: 22055794
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 81; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CHROMATIC ABERRATIONS
DESIGN
ERRORS
FILTERS
JT-60 TOKAMAK
NEODYMIUM LASERS
OPTICS
PLASMA
THOMSON SCATTERING
WAVELENGTHS