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Chapter 7: Tomography Diagnostics: Bolometry and Soft-X-Ray Detection

L. C. Ingesson, B. Alper, B. J. Peterson, J.-C. Vallet

Fusion Science and Technology / Volume 53 / Number 2 / Pages 528-576

February 2008

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This chapter reviews multichannel broadband measurement of the soft-X-ray radiation and total radiation in magnetically confined fusion plasma experiments. Common detector types used (including bolometers), details of their application, and interpretation of their measurements are described. An introduction is given to the application of computed tomography methods in the mathematical reconstruction of emission profiles from multiple (approximately) line-integral measurements, taking into account the specific circumstances common in magnetically confined fusion plasma experiments. Although the emphasis is on two-dimensional tomography of poloidal cross sections, the applications of Abel inversion, three-dimensional tomography, vector tomography, and other specific methods are briefly discussed. Several examples of the application and the plasma parameters that can be derived are given.

 
 
 
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