Title :
PIC simulations of beam dynamics experiments planned for the high current experiment
Author :
Celata, C.M. ; Haber, I. ; Grote, D.P.
Author_Institution :
Lawrence Berkeley Lab., Berkeley, CA, USA
Abstract :
This paper reports progress on simulation of the High Current Experiment (HCX), a heavy ion accelerator at LBNL built to explore transport of intense beams at the scale of a heavy ion fusion power plant driver. The 2D particle-in-cell (PIC) code WARPxy was used to the explore the effect of image forces, distribution function, and focusing nonlinearities on the dynamic aperture of the electrostatic focusing system for the HCX, as well as the effect on dynamics of misalignments and quadrupole rotations. Simulations using a semiGaussian initial distribution are compared to results for a more realistic distribution function obtained by initializing a space-charge-dominated beam at the emitter and propagating it through the aberrations of the injector and matching section
Keywords :
accelerator magnets; collective accelerators; electromagnets; electrostatic accelerators; high energy physics instrumentation computing; ion accelerators; ion beams; ion optics; particle beam dynamics; particle beam focusing; particle beam fusion accelerators; plasma inertial confinement; positive ions; potassium; 2D particle-in-cell code; K+; K+ beams; LBNL; PIC simulations; WARPxy code; beam dynamics experiments; beam matching section; distribution function; dynamic aperture; electrostatic focusing system; focusing nonlinearities; heavy ion accelerator; heavy ion fusion power plant driver; high current experiment; image force effect; injector aberrations; intense beam transport; magnetic quadrupoles; misalignment dynamics; particle-in-cell simulation; quadrupole rotations; semiGaussian initial distribution; space-charge-dominated beam; Apertures; Costs; Diodes; Distribution functions; Electrodes; Electrostatics; Focusing; Laboratories; Nonlinear dynamical systems; Particle beams;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.987957
