A new frequency-multiplied interferometer system in the GAMMA 10 tandem mirror

J. Kohagura, M. Yoshikawa, Y. Shima, Y. Morikawa, T. Yamada, D. Akita, K. Tatebe, M. Ichimura, M. Hirata, R. Ikezoe, T. Yokoyama, T. Imai

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A new interferometer is installed on the west anchor cell of the GAMMA 10 tandem mirror. In GAMMA 10, we have used a heterodyne-type interferometer with a 70-GHz IMPATT oscillator and a 150-MHz oscillator for frequency modulation. The new interferometer consists of a 17.5-GHz phase locked dielectric resonator oscillator and a 37.5-MHz temperature-compensated crystal oscillator, as well as frequency multipliers. The main motivation for the new interferometer using frequency multipliers is to achieve a stable and cost effective interferometer. Direct anchor heating experiments with new anchor ion cyclotron range of frequency antennas in both the west and the east anchor cells are carried out. Density increases in both anchor cells are clearly observed using the new interferometer.

Original languageEnglish
Article number10E310
JournalReview of Scientific Instruments
Issue number10
Publication statusPublished - Oct 1 2012
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Instrumentation

Cite this

Kohagura, J., Yoshikawa, M., Shima, Y., Morikawa, Y., Yamada, T., Akita, D., ... Imai, T. (2012). A new frequency-multiplied interferometer system in the GAMMA 10 tandem mirror. Review of Scientific Instruments, 83(10), [10E310]. https://doi.org/10.1063/1.4731006