Development of 2D potential profile measurements using the heavy ion beam probe on the large helical device

Lhd Experiment Group

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Two-dimensional potential fluctuation profiles were measured with the heavy ion beam probe (HIBP) on the Large Helical Device. For two-dimensional measurements with HIBP, the probe beam energy had to be changed, and subtle adjustment of the beam trajectory along the long beam transport line (~20 m) was required. An automatic beam adjustment system was developed for the beam transport line, and used to easily adjust the probe beam trajectory. Potential fluctuations in the high-frequency range (~200 kHz) were measured, and the probe beam energy was changed shot to shot. Two-dimensional potential phase structures were successfully obtained by analyzing the coherence between potential and magnetic field fluctuation, which is used as a reference signal.

Original languageEnglish
Article number2402123
JournalPlasma and Fusion Research
Volume11
Issue number1
DOIs
Publication statusPublished - Jan 1 2016

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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