Upgrade of the analyzer design for multipoint measurements by a gold neutral beam probe on the GAMMA 10 tandem mirror

Miyata, Y.; Yoshikawa, M.; Oono, Y.; Mizuguchi, M.; Nakashima, Y.; Goshu, S.; Nakada, M.; Imai, T.
October 2008
Review of Scientific Instruments;Oct2008, Vol. 79 Issue 10, p10F308
Academic Journal
The study of the mechanisms of both transport and fluctuations is one of the main issues of fusion plasma researches. Spatial fluctuation structure measurements are important for studying of cross correlation between the two fluctuations. Gold neutral beam probe systems are used in GAMMA 10 tandem mirror plasma device. Currently, the plasma potential and its fluctuations cannot be measured at different radial positions simultaneously. This paper presents the upgrade design of the 45° electrostatic energy analyzer for the simultaneous multipoint measurements of plasma parameters.


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