scholarly journals Electron beam instabilities in gyrotron beam tunnels

1998 ◽  
Vol 5 (6) ◽  
pp. 2421-2430 ◽  
Author(s):  
M. Pedrozzi ◽  
S. Alberti ◽  
J. P. Hogge ◽  
M. Q. Tran ◽  
T. M. Tran
Keyword(s):  
Electron Beam ◽  
Beam Instabilities

X-Rays at the SIAM Photon Source

2005 ◽  
Vol 107 ◽  
pp. 1-6 ◽  
Author(s):  
R. Apiwatwaja ◽  
S. Chunjarean ◽  
K. Hass ◽  
G. Hoyes ◽  
C. Kaewprasert ◽  
...  
Keyword(s):  
Electron Beam ◽  
Beam Energy ◽  
Photon Beam ◽  
Electron Beam Energy ◽  
X Rays ◽  
Vacuum Chambers ◽  
Wavelength Shifter ◽  
Insertion Device ◽  
Beam Instabilities ◽  
Photon Source

In this note, we describe the upgrade effort to convert the SIAM Photon source into an Xray synchrotron radiation facility with photon energies up to some 15 keV. This conversion of SIAM Photon into a third generation light source can be achieved through an increase of the electron beam energy and the addition of recently available superconducting wavelength shifter and multipole wiggler magnets. A gradual retrofit of vacuum chambers aiming at a reduction of electron beam instabilities as well as a modification of the focusing structure are expected to greatly increase the brightness of the photon beam. These upgrades will be implemented gradually over a few years to minimize the interruption of ongoing experimental activities. As an ultimate upgrade, a study has been started which shows the feasibility to implement a 2 GeV storage ring replacing the present ring in the same foot print. This new ring is configured to provide double the number of insertion device photon beam lines.

Dynamical evolution of three-dimensional kinetic electron-beam instabilities

1989 ◽  
Vol 41 (1) ◽  
pp. 1-11 ◽  
Author(s):  
H. I. Abdel-Gawad
Keyword(s):  
Distribution Function ◽  
Electron Beam ◽  
Three Dimensional ◽  
Dynamical Evolution ◽  
Zero Energy ◽  
Linear Diffusion ◽  
Flat Shape ◽  
Method Of Solution ◽  
Consistent Manner ◽  
Beam Instabilities

We present a method of solution of the quasi-linear diffusion equation for the averaged distribution function. The criterion for its validity is discussed. Using the solution obtained, we study the dynamics of the relaxation of a weak kinetic electron-beam instability and show that it saturates asymptotically at zero energy level. In a self-consistent manner, the distribution function for the beam particles will be shown to deform to a flat shape.

scholarly journals Electron-beam instabilities in the foreshock of high Mach number oblique shocks

2021 ◽  
Author(s):  
Martin Weidl ◽  
Artem Bohdan ◽  
Paul Morris ◽  
Martin Pohl
Keyword(s):  
Electron Beam ◽  
Mach Number ◽  
High Mach Number ◽  
High Mach ◽  
Beam Instabilities ◽  
Oblique Shocks
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