Numerical study of plasma generation process and internal antenna heat loadings in J-PARC RF negative ion source

T. Shibata, K. Nishida, S. Mochizuki, S. Mattei, J. Lettry, A. Hatayama, A. Ueno, H. Oguri, K. Ohkoshi, K. Ikegami, A. Takagi, H. Asano, F. Naito

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Abstract

A numerical model of plasma transport and electromagnetic field in the J-PARC (Japan Proton Accelerator Research Complex) radio frequency ion source has been developed to understand the relation between antenna coil heat loadings and plasma production/transport processes. From the calculation, the local plasma density increase is observed in the region close to the antenna coil. Electrons are magnetized by the magnetic field line with absolute magnetic flux density 30-120 Gauss which leads to high local ionization rate. The results suggest that modification of magnetic configuration can be made to reduce plasma heat flux onto the antenna.

Original languageEnglish
Article number02B128
JournalReview of Scientific Instruments
Volume87
Issue number2
DOIs
Publication statusPublished - 2016 Feb 1

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ASJC Scopus subject areas

  • Instrumentation

Cite this

Shibata, T., Nishida, K., Mochizuki, S., Mattei, S., Lettry, J., Hatayama, A., Ueno, A., Oguri, H., Ohkoshi, K., Ikegami, K., Takagi, A., Asano, H., & Naito, F. (2016). Numerical study of plasma generation process and internal antenna heat loadings in J-PARC RF negative ion source. Review of Scientific Instruments, 87(2), [02B128]. https://doi.org/10.1063/1.4931787