Synchrotron radiation spectra and synchrotron radiation spot shape of runaway electrons in Experimental Advanced Superconducting Tokamak
| Autor: | I. M. Pankratov, J. H. Yang, Liqun Hu, Miaohua Xu, R. J. Zhou |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Physics of Plasmas. 21:063302 |
| ISSN: | 1089-7674 1070-664X |
| Popis: | A detailed analysis of the spectra of synchrotron radiation emitted by runaway electrons, and an analysis of synchrotron radiation spot shapes are presented for EAST runaway cases. Conditions required for the asymptotic expressions of synchrotron radiation spectra to be valid are studied for these EAST parameters. We provide the correct synchrotron radiation spectra in typical EAST discharges, and we show results of calculations of the shape of the synchrotron radiation spots emitted by runaway electrons. These shapes are detected by a visible light camera in EAST. Safety factor q(r), the horizontal displacement of electron drift surfaces with respect to the magnetic surfaces δe, pitch angle θp, and the position of the camera were taken into account. Our results indicate that the θp and q profiles can significantly affect the synchrotron radiation spot shape; it is simpler to record all synchrotron radiation if the camera is placed far from the plasma. An asymmetrical synchrotron radiation spot shape can ... |
| Databáze: | OpenAIRE |
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