Title :
Three-Dimensional Design of a Non-Axisymmetric Periodic Permanent Magnet Focusing System
Author :
Chen, Chiping ; Bhatt, Ronak ; Radovinsky, Alexey ; Zhou, Jing
Author_Institution :
Plasma Science and Fusion Center, MIT, Cambridge, MA 02139, chenc@psfc.mit.edu
Abstract :
A three-dimensional (3D) design is presented of a non-axisymmetric periodic permanent magnet (PPM) focusing system which will be used to focus a large-aspect-ratio, ellipse-shaped, space-charge-dominated electron beam. In this design, an analytic theory is used to specify the magnetic profile for beam transport. The OPERA3D code is used to compute and optimize a realizable magnet system. Good beam transport is simulated with the designed magnetic fields, using both 2D particle-in-cell (PIC) and 3D ray trajectory codes.
Keywords :
Electron beams; Equations; Linear particle accelerator; Magnetic analysis; Magnetic fields; Magnetic materials; Nuclear and plasma sciences; Particle beams; Permanent magnets; Voltage;
Conference_Titel :
Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the
Print_ISBN :
0-7803-8859-3
DOI :
10.1109/PAC.2005.1590974
