학술논문
First results from the implementation of the ITER diagnostic residual gas analyzer prototype at Wendelstein 7-X.
Document Type
Article
Author
Source
Subject
*MAGNETIC field effects
*FUEL cycle
*FUSION reactors
*GAS fields
*PARTIAL pressure
*WASTE gases
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Language
ISSN
0034-6748
Abstract
Fusion reactors and long pulse fusion experiments heavily depend on a continuous fuel cycle, which requires detailed monitoring of exhaust gases. We have used a diagnostic residual gas analyzer (DRGA) built as a prototype for ITER and integrated it on the most advanced stellarator fusion experiment, Wendelstein 7-X (W7-X). The DRGA was equipped with a sampling tube and assessed for gas time of flight sample response, effects of magnetic field on gas detection and practical aspects of use in a state of the art fusion environment. The setup was successfully commissioned and operated and was used to observe the gas composition of W7-X exhaust gases. The measured time of flight gas response was found to be in the order of a second for a 7 m sample tube. High values of magnetic field were found to affect the partial pressure readings of the DRGA and suggest that additional shielding is necessary in future experimental campaigns. [ABSTRACT FROM AUTHOR]