skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Behavior of the plasma in the anchor cell of the GAMMA 10 tandem mirror

Abstract

Anchor cells of the GAMMA 10 tandem mirror are composed of minimum-B magnetic field configuration. Behavior of the plasma in the anchor cell is studied using puffing gas flow rate (PGFR) modulation and by covering some parts of the flux tube of each anchor cell by conducting plates (APs). Ambient neutral pressure is decreased by PGFR modulation during axial/potential confinement in both cases without and with APs and it is found that both line density (nl{sub EA}) and diamagnetism (dm{sub EA}) of the anchor cell plasma increase. Lower neutral pressure in the minimum-B region is investigated during the floated APs and significant improvement of the GAMMA 10 plasma parameters is observed. Possible explanations of the experimental results are given from the viewpoint of ambient neutral pressure oriented anchor plasma behavior. Probable reasons of enhanced ambient neutral pressure in the anchor cell and adverse effects of these neutrals on GAMMA 10 plasma parameters are also pointed out.

Authors:
; ; ;  [1]
  1. Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577 (Japan)
Publication Date:
OSTI Identifier:
20879978
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 100; Journal Issue: 3; Other Information: DOI: 10.1063/1.2218999; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CONFINEMENT; GAMMA 10 DEVICES; GAS FLOW; MAGNETIC FIELD CONFIGURATIONS; PLASMA; PLASMA DENSITY; PLASMA DIAGNOSTICS; PLASMA DIAMAGNETISM; PLASMA PRESSURE

Citation Formats

Islam, Md Khairul, Nakashima, Yousuke, Higashizono, Yuta, and Cho, Teruji. Behavior of the plasma in the anchor cell of the GAMMA 10 tandem mirror. United States: N. p., 2006. Web. doi:10.1063/1.2218999.
Islam, Md Khairul, Nakashima, Yousuke, Higashizono, Yuta, & Cho, Teruji. Behavior of the plasma in the anchor cell of the GAMMA 10 tandem mirror. United States. https://doi.org/10.1063/1.2218999
Islam, Md Khairul, Nakashima, Yousuke, Higashizono, Yuta, and Cho, Teruji. 2006. "Behavior of the plasma in the anchor cell of the GAMMA 10 tandem mirror". United States. https://doi.org/10.1063/1.2218999.
@article{osti_20879978,
title = {Behavior of the plasma in the anchor cell of the GAMMA 10 tandem mirror},
author = {Islam, Md Khairul and Nakashima, Yousuke and Higashizono, Yuta and Cho, Teruji},
abstractNote = {Anchor cells of the GAMMA 10 tandem mirror are composed of minimum-B magnetic field configuration. Behavior of the plasma in the anchor cell is studied using puffing gas flow rate (PGFR) modulation and by covering some parts of the flux tube of each anchor cell by conducting plates (APs). Ambient neutral pressure is decreased by PGFR modulation during axial/potential confinement in both cases without and with APs and it is found that both line density (nl{sub EA}) and diamagnetism (dm{sub EA}) of the anchor cell plasma increase. Lower neutral pressure in the minimum-B region is investigated during the floated APs and significant improvement of the GAMMA 10 plasma parameters is observed. Possible explanations of the experimental results are given from the viewpoint of ambient neutral pressure oriented anchor plasma behavior. Probable reasons of enhanced ambient neutral pressure in the anchor cell and adverse effects of these neutrals on GAMMA 10 plasma parameters are also pointed out.},
doi = {10.1063/1.2218999},
url = {https://www.osti.gov/biblio/20879978}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 3,
volume = 100,
place = {United States},
year = {Tue Aug 01 00:00:00 EDT 2006},
month = {Tue Aug 01 00:00:00 EDT 2006}
}