Magnetic field fluctuation measurement with a heavy ion beam probe in the Large Helical Device

A. Shimizu, T. Ido, M. Nishiura, H. Nakano, S. Ohshima

Research output: Contribution to journalArticle

Abstract

The measurements of magnetic field fluctuation with a heavy ion beam probe (HIBP) in the Large Helical Device (LHD) are considered in this article. Measured value reflects not only the fluctuation at the observation point (sample volume) but also the fluctuation on the beam path. These effects (called as the path integral effects) are considered and calculated for variations of fluctuations in LHD. The distortion of the measured profile by the path integral effect is not significant at the peak of the fluctuation amplitude. In contrast, in the region far from the peak, phony signals due to path integral effects are observed. Finally, the resolution of magnetic field fluctuation measurements with our HIBP system is estimated. Estimated results show that the magnitude of 4.1× 10-5 T can be measured with our system.

Original languageEnglish
Article number10F317
JournalReview of Scientific Instruments
Volume79
Issue number10
DOIs
Publication statusPublished - Nov 10 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Instrumentation

Fingerprint Dive into the research topics of 'Magnetic field fluctuation measurement with a heavy ion beam probe in the Large Helical Device'. Together they form a unique fingerprint.

Cite this