On space charge dominated beam transport without emittance growth

1996 ◽  
Author(s):  
Yuri K. Batygin
Keyword(s):  
Space Charge ◽  
Beam Transport ◽  
Emittance Growth

scholarly journals Skew Quadrupole Effect of Laser Plasma Electron Beam Transport

2019 ◽  
Vol 9 (12) ◽  
pp. 2447 ◽  
Author(s):  
Driss Oumbarek Espinos ◽  
Amin Ghaith ◽  
Thomas André ◽  
Charles Kitégi ◽  
Mourad Sebdaoui ◽  
...  
Keyword(s):  
Electron Beam ◽  
Laser Plasma ◽  
Free Electron ◽  
Free Electron Laser ◽  
Plasma Electron ◽  
Beam Transport ◽  
Emittance Growth ◽  
Quadrupole Effect ◽  
Beam Parameters ◽  
Electron Beam Transport

Laser plasma acceleration (LPA) capable of providing femtosecond and GeV electron beams in cm scale distances brings a high interest for different applications, such as free electron laser and future colliders. Nevertheless, LPA high divergence and energy spread require an initial strong focus to mitigate the chromatic effects. The reliability, in particular with the pointing fluctuations, sets a real challenge for the control of the dispersion along the electron beam transport. We examine here how the magnetic defects of the first strong quadrupoles, in particular, the skew terms, can affect the brightness of the transported electron beam, in the case of the COXINEL transport line, designed for manipulating the electron beam properties for a free electron laser application. We also show that the higher the initial beam divergence, the larger the degradation. Experimentally, after having implemented a beam pointing alignment compensation method enabling us to adjust the position and dispersion independently, we demonstrate that the presence of non-negligible skew quadrupolar components induces a transversal spread and tilt of the beam, leading to an emittance growth and brightness reduction. We are able to reproduce the measurements with beam transport simulations using the measured electron beam parameters.

Space‐charge‐neutralized proton beam transport in an axial magnetic field

1990 ◽  
Vol 67 (2) ◽  
pp. 611-616 ◽  
Author(s):  
G. S. Kerslick ◽  
Cz. Golkowski ◽  
J. A. Nation ◽  
I. S. Roth ◽  
J. D. Ivers
Keyword(s):  
Magnetic Field ◽  
Space Charge ◽  
Proton Beam ◽  
Axial Magnetic Field ◽  
Beam Transport

scholarly journals Simulation studies of space-charge-dominated beam transport in large-aperture ratio quadrupoles

1993 ◽  
Vol 106 (11) ◽  
pp. 1637-1642
Author(s):  
W. M. Fawley ◽  
L. J. Laslett ◽  
C. M. Celata ◽  
A. Faltens ◽  
I. Haber
Keyword(s):  
Space Charge ◽  
Simulation Studies ◽  
Beam Transport ◽  
Large Aperture ◽  
Aperture Ratio
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