Three-dimensional analysis of ion beam deflection by the magnetic field at H− ion sources for the negative-ion-based neutral beam injection

1998 ◽  
Vol 69 (2) ◽  
pp. 1144-1146 ◽  
Author(s):  
M. Tanaka ◽  
Y. Ose ◽  
M. Koizumi ◽  
Y. Yamashita ◽  
H. Kawakami ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Dimensional Analysis ◽  
Ion Beam ◽  
Three Dimensional ◽  
Neutral Beam Injection ◽  
Ion Sources ◽  
Negative Ion ◽  
Beam Deflection ◽  
Beam Injection ◽  
The Magnetic Field

Improvements of the magnetic field design for SPIDER and MITICA negative ion beam sources

2015 ◽  
Author(s):  
G. Chitarin ◽  
P. Agostinetti ◽  
D. Aprile ◽  
N. Marconato ◽  
P. Veltri
Keyword(s):  
Magnetic Field ◽  
Ion Beam ◽  
Negative Ion ◽  
The Magnetic Field

scholarly journals Three-dimensional simulation of the electromagnetic ion/ion beam instability: cross field diffusion

2000 ◽  
Vol 7 (3/4) ◽  
pp. 167-172 ◽  
Author(s):  
H. Kucharek ◽  
M. Scholder ◽  
A. P. Matthews
Keyword(s):  
Magnetic Field ◽  
Diffusion Coefficient ◽  
Ion Beam ◽  
Three Dimensional ◽  
Spatial Dimension ◽  
Static Field ◽  
Beam Instability ◽  
Field Diffusion ◽  
The Cross ◽  
The Magnetic Field

Abstract. In a system with at least one ignorable spatial dimension charged particles moving in fluctuating fields are tied to the magnetic field lines. Thus, in one-and two-dimensional simulations cross-field diffusion is inhibited and important physics may be lost. We have investigated cross-field diffusion in self-consistent 3-D magnetic turbulence by fully 3-dimensional hybrid simulation (macro-particle ions, massless electron fluid). The turbulence is generated by the electromagnetic ion/ion beam instability. A cold, low density, ion beam with a high velocity stream relative to the background plasma excites the right-hand resonant instability. Such ion beams may be important in the region of the Earth's foreshock. The field turbulence scatters the beam ions parallel as well as perpendicular to the magnetic field. We have determined the parallel and perpendicular diffusion coefficient for the beam ions in the turbulent wave field. The result compares favourably well (within a factor 2) with hard-sphere scattering theory for the cross-field diffusion coefficient. The cross-field diffusion coefficient is larger than that obtained in a static field with a Kolmogorov type spectrum and similar total fluctuation power. This is attributed to the resonant behaviour of the particles in the fluctuating field.

Beam deflection by plasma grid filter current in the negative-ion source for JT-60U neutral beam injection system

2006 ◽  
Vol 77 (3) ◽  
pp. 03A529 ◽  
Author(s):  
N. Umeda ◽  
Y. Ikeda ◽  
M. Hanada ◽  
T. Inoue ◽  
M. Kawai ◽  
...  
Keyword(s):  
Ion Source ◽  
Neutral Beam Injection ◽  
Negative Ion ◽  
Neutral Beam ◽  
Beam Deflection ◽  
Injection System ◽  
Beam Injection

Negative ion sources for neutral beam injection into fusion machines

1998 ◽  
Vol 69 (2) ◽  
pp. 926-928 ◽  
Author(s):  
R. Trainham ◽  
C. Jacquot ◽  
D. Riz ◽  
A. Simonin ◽  
K. Miyamoto ◽  
...  
Keyword(s):  
Neutral Beam Injection ◽  
Ion Sources ◽  
Negative Ion ◽  
Neutral Beam ◽  
Beam Injection

Direct Energy Recovery from Unneutralized Ion Beams in a Negative-Ion-Beam-Based Neutral Beam Injection System

1990 ◽  
Vol 17 (4) ◽  
pp. 527-539 ◽  
Author(s):  
Kiyoshi Yoshikawa ◽  
Yoshihiko Nimura ◽  
Yasushi Yamamoto ◽  
Hiroshi Watanabe
Keyword(s):  
Energy Recovery ◽  
Ion Beam ◽  
Ion Beams ◽  
Neutral Beam Injection ◽  
Negative Ion ◽  
Neutral Beam ◽  
Injection System ◽  
Beam Injection ◽  
Direct Energy

Development of large RF driven negative ion sources for neutral beam injection

2003 ◽  
Vol 66-68 ◽  
pp. 491-495 ◽  
Author(s):  
W. Kraus ◽  
P. McNeely ◽  
P. Franzen ◽  
A. Entscheva ◽  
M. Bandyopadhyay ◽  
...  
Keyword(s):  
Neutral Beam Injection ◽  
Ion Sources ◽  
Negative Ion ◽  
Neutral Beam ◽  
Beam Injection

scholarly journals A New Method of Measuring the Magnetic Field in Hot Plasmas Using Helium Neutral Beam Injection

2008 ◽  
Vol 3 ◽  
pp. 015-015 ◽  
Author(s):  
Yoichi HIRANO ◽  
Benjamin HUDSON ◽  
Haruhisa KOGUCHI ◽  
Hajime SAKAKITA ◽  
Satoru KIYAMA
Keyword(s):  
Magnetic Field ◽  
Neutral Beam Injection ◽  
New Method ◽  
Neutral Beam ◽  
Beam Injection ◽  
The Magnetic Field
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