skip to main content

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

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.
Authors:
; ; ; ; ; ; ;  [1] ; ; ;  [2] ; ;  [3]
  1. J-PARC Center, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195 (Japan)
  2. Keio University, Hiyoshi, Kohoku-ku, Yokohama-shi, Kanagawa-ken 223-8522 (Japan)
  3. European Organization for Nuclear Research (CERN), 1211 Geneva 23 (Switzerland)
Publication Date:
OSTI Identifier:
22482948
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 87; Journal Issue: 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ANIONS; ANTENNAS; ELECTROMAGNETIC FIELDS; FLUX DENSITY; HEAT FLUX; HEATING LOAD; ION SOURCES; IONIZATION; J-PARC; MAGNETIC FIELDS; MAGNETIC FLUX; NUMERICAL ANALYSIS; PLASMA DENSITY; PLASMA PRODUCTION; RADIOWAVE RADIATION