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Titolo:
Design study of 3-D tomography diagnostics for spherical tokamaks
Autore:
Balandin, AL; Ono, Y; Tawara, T;
Indirizzi:
Univ Tokyo, High Temp Plasma Ctr, Bunkyo Ku, Tokyo 1138656, Japan Univ Tokyo Tokyo Japan 1138656 asma Ctr, Bunkyo Ku, Tokyo 1138656, Japan
Titolo Testata:
EUROPEAN PHYSICAL JOURNAL D
fascicolo: 1, volume: 14, anno: 2001,
pagine: 97 - 103
SICI:
1434-6060(200104)14:1<97:DSO3TD>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
IMAGE-RECONSTRUCTION; PROJECTIONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
10
Recensione:
Indirizzi per estratti:
Indirizzo: Balandin, AL Univ Tokyo, High Temp Plasma Ctr, Bunkyo Ku, 2-11-16 Yayoi, Tokyo 1138656,Japan Univ Tokyo 2-11-16 Yayoi Tokyo Japan 1138656 o 1138656,Japan
Citazione:
A.L. Balandin et al., "Design study of 3-D tomography diagnostics for spherical tokamaks", EUR PHY J D, 14(1), 2001, pp. 97-103

Abstract

A novel three-dimensional (3-D) tomography software has been developed forspherical tokamak (ST) plasmas with thin central coils. It enables us to measure whole 3-D annular profiles of ST plasma emissivity (line spectrum etc.) using limited number of detectors located on a sphere outside of its separatrix. The numbers and positions of detectors have been optimized for STs that contain low-n toroidal modes from n = 1 to 5. Mathematical method allowing for the removal of the thin central coil from the region of reconstruction and to reconstruct STs with single and double a-axes are also discussed. The shadow effect of center coil region was found to limit the reconstruction accuracy, indicating that the low-aspect ratio torus (ST) is essential to this new 3-D tomography diagnostics.

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Documento generato il 25/01/20 alle ore 16:03:52