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

doi:10.1063/1.4931787

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

Department of Applied Physics and Physico-Informatics

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

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 language	English
Article number	02B128
Journal	Review of Scientific Instruments
Volume	87
Issue number	2
DOIs	https://doi.org/10.1063/1.4931787
Publication status	Published - 2016 Feb 1

ASJC Scopus subject areas

Instrumentation

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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), Article 02B128. https://doi.org/10.1063/1.4931787

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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.",

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

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doi = "10.1063/1.4931787",

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AU - Shibata, T.

AU - Nishida, K.

AU - Mochizuki, S.

AU - Mattei, S.

AU - Lettry, J.

AU - Hatayama, A.

AU - Ueno, A.

AU - Oguri, H.

AU - Ohkoshi, K.

AU - Ikegami, K.

AU - Takagi, A.

AU - Asano, H.

AU - Naito, F.

PY - 2016/2/1

Y1 - 2016/2/1

N2 - 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.

AB - 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.

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

Abstract

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