Title :
A high-order moment simulation model
Author :
Tsang, K.T. ; Kostas, C. ; Mondelli, A.
Author_Institution :
Sci. Applications Int. Corp., McLean, VA, USA
Abstract :
The physical length of accelerator systems presents computational difficulties for three-dimensional discrete-particle simulations of the dynamics and emittance growth in beam transport. An alternative to the discrete-particle approach is a high-order moment equation model, which is an extension of envelope equations formulated first by Kapchinskij and Vladimirskij (1959) and later adapted by Lee, Close and Smith (1987). Chernin (1988) has derived a beam envelope equation from the equations of motion for a mono-energetic particle beam in a magnetic field that is linear in the transverse coordinates. In this work we are interested in beams with a spread in energy, and transport systems with a nonlinear transverse dependence of the magnetic field
Keywords :
beam handling techniques; particle beam diagnostics; 3D discrete-particle simulations; accelerator physical length; beam envelope equation; beam transport dynamics; beam transport emittance growth; envelope equations; equations of motion; high-order moment simulation model; monoenergetic particle beam; nonlinear transverse magnetic field dependence; Computational modeling; Coordinate measuring machines; Differential equations; Extraterrestrial measurements; Magnetic fields; Partial differential equations; Particle accelerators; Particle beams; Physics computing; Tensile stress;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.309622
