Application Of Computerized Tomography Techniques To Tokamak Diagnostics

R. C. Chase; F. H. Seguin; M. Gerassimenko; R. Petrasso

doi:10.1117/12.958857

22 August 1980 Application Of Computerized Tomography Techniques To Tokamak Diagnostics

R. C. Chase, F. H. Seguin, M. Gerassimenko, R. Petrasso

Proceedings Volume 0231, 1980 Intl Optical Computing Conf I; (1980) https://doi.org/10.1117/12.958857
Event: 1980 Technical Symposium East, 1980, Washington, D.C., United States

Abstract

The methods of computerized tomography (CT), developed for medical X-ray applications, can be adapted for use in studying plasma X-ray emissivity distributions in tokamaks and other magnetic confinement devices. Current generation CT scanners reconstruct maps of X-ray absorptivity on body cross sections by processing transmission data from a number of fan-shaped beams of X-rays. Analogous fan beam emission data can be obtained from confined plasmas by collimating emitted soft X-rays with a "pin hole" or slit and detecting them with a linear array of solid state detectors. Data from a number of such one-dimensional views of the plasma can be used to reconstruct a two-dimensional "photograph" of the absolute X-ray emission in cross section. No a priori assumptions about the nature of the emissivity distribution are necessary. In this paper we demonstrate the feasibility of the technique by reconstructing test patterns with data simulated for a number of different types of detector arrangements. We also use the technique with real data to reconstruct a rotating emissivity feature on a cross section of Massachusetts Institute of Technology's Alcator A tokamak.

Citation Download Citation

R. C. Chase, F. H. Seguin, M. Gerassimenko, and R. Petrasso "Application Of Computerized Tomography Techniques To Tokamak Diagnostics", Proc. SPIE 0231, 1980 Intl Optical Computing Conf I, (22 August 1980); https://doi.org/10.1117/12.958857

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available