The beam temperature and energy broadening of a charged-particle beam in an axially symmetric magnetic field

1992 ◽  
Vol 1 (2) ◽  
pp. 86-93
Author(s):  
Tian Ren-he ◽  
Manfred Fink
Keyword(s):  
Magnetic Field ◽  
Charged Particle ◽  
Particle Beam ◽  
Axially Symmetric ◽  
Charged Particle Beam

Excitation of surface-type X modes by charged-particle beams

1998 ◽  
Vol 60 (2) ◽  
pp. 413-420 ◽  
Author(s):  
V. O. GIRKA
Keyword(s):  
Magnetic Field ◽  
Charged Particle ◽  
Structural Parameters ◽  
Particle Beam ◽  
Charged Particle Beam ◽  
Surface Type ◽  
Charged Particle Beams ◽  
Steady Magnetic Field ◽  
Polarized Surface ◽  
Oriented Parallel

A theoretical investigation of extraordinary polarized surface waves at the second harmonics of ion and electron cyclotron frequencies propagating across an external steady magnetic field is carried out in the case of weak plasma spatial dispersion when the thermal velocities of plasma particles are much less than the phase velocities of the considered waves. These waves are eigenmodes of a planar plasma–vacuum waveguide structure that is situated in a steady magnetic field oriented parallel to the plasma surface. A cold charged-particle beam is assumed to propagate over the plasma interface. Excitation of surface X modes at the second harmonics of electron and ion cyclotron frequencies due to the beam–plasma interaction is studied analytically. The dependence of surface-type X-mode (STXM) growth rates on the considered waveguide structural parameters is also studied.

Fokker–Planck model of charged-particle beam behavior in a strong toroidal magnetic field

2005 ◽  
Vol 6 (3) ◽  
pp. 417-428
Author(s):  
Z. Parsa ◽  
A. Chikrii ◽  
S. Eidelman ◽  
V. Yavorskij ◽  
V. Zadorozhny
Keyword(s):  
Magnetic Field ◽  
Charged Particle ◽  
Particle Beam ◽  
Toroidal Magnetic Field ◽  
Charged Particle Beam ◽  
Fokker Planck

Excitation of surface cyclotron O modes by charged-particle beams

2002 ◽  
Vol 68 (2) ◽  
pp. 129-136 ◽  
Author(s):  
V. O. GIRKA
Keyword(s):  
Magnetic Field ◽  
Charged Particle ◽  
Particle Beam ◽  
Charged Particle Beam ◽  
Plasma Surface ◽  
Charged Particle Beams ◽  
Planar Plasma ◽  
Steady Magnetic Field ◽  
Polarized Surface ◽  
Oriented Parallel

A theoretical investigation of the interaction between a charged-particle beam and ordinarily polarized surface waves at the first two harmonics of ion and electron cyclotron frequencies propagating across an external steady magnetic field is carried out. The case of weak plasma spatial dispersion when the Larmor radii of plasma particles are much less than the penetration depth of these waves into the plasma is considered. The indicated waves are eigenmodes of the planar plasma–vacuum–metal waveguide structure, which is exposed to a steady magnetic field oriented parallel to the plasma surface. It is supposed that a cold charged- particle beam propagates over the plasma surface in the vacuum region. The beam density is less than the plasma density. Excitation of these O modes at the first and second harmonics of electron and ion cyclotron frequencies caused by the both resonant beam and dissipative instabilities is studied analytically. The dependence of their growth rates on parameters of the considered waveguide structures is also examined.

scholarly journals Accelerator Engineering and Technology: Accelerator Technology

2020 ◽  
pp. 337-517
Author(s):  
F. Bordry ◽  
L. Bottura ◽  
A. Milanese ◽  
D. Tommasini ◽  
E. Jensen ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Charged Particle ◽  
Particle Beam ◽  
Space Distribution ◽  
Main Function ◽  
Uniform Field ◽  
Charged Particle Beam ◽  
Linear Accelerators ◽  
Engineering And Technology ◽  
Accelerator Technology

AbstractMagnets are at the core of both circular and linear accelerators. The main function of a magnet is to guide the charged particle beam by virtue of the Lorentz force, given by the following expression:where q is the electrical charge of the particle, v its velocity, and B the magnetic field induction. The trajectory of a particle in the field depends hence on the particle velocity and on the space distribution of the field. The simplest case is that of a uniform magnetic field with a single component and velocity v normal to it, in which case the particle trajectory is a circle. A uniform field has thus a pure bending effect on a charged particle, and the magnet that generates it is generally referred to as a dipole.

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