Effect of the long solenoid tunnel on the growth of emittance in the PNC high power electron linac

Author

Nomura, Masahiro ; Takahashi, Hiroshi

Author_Institution

Power Reactor, Nucl. Fuel Dev. Corp., Japan

Volume

3

fYear

1997

fDate

12-16 May 1997

Firstpage

2787

Abstract

We developed a new, three-dimensional simulation code ETRA3D to calculate beam dynamics in the injector of PNC, high-power, high-duty electron linac. In ETRA3D, beam dynamics are calculated by Hamiltonian equations and the space-charge force is calculated by the potentials produced by other electrons. The Hamiltonian is calculated at each time step and the length of the time step is varied by a change in the Hamiltonian to reduce the error of transition and the calculation time. The precision of ETRA3D was checked by comparing it with the envelope equation. The agreement between them was good. We demonstrated the capabilities of ETRA3D by an example in which the electron beam is not launched along the axis of the series of the solenoid coils. Under this condition, two-dimensional codes can not calculate the beam dynamics

Keywords

electron accelerators; electron beams; high energy physics instrumentation computing; linear accelerators; particle beam dynamics; particle beam injection; space charge; 3D simulation code; ETRA3D code; Hamiltonian equations; PNC high power electron linac; beam dynamics; electron beam; emittance growth; envelope equation; injector; long solenoid tunnel; space-charge force; Choppers; Coils; Electron beams; Electron emission; Equations; Inductors; Linear particle accelerator; Nuclear fuels; Radio frequency; Solenoids;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1997. Proceedings of the 1997

Conference_Location

Vancouver, BC

Print_ISBN

0-7803-4376-X

Type

conf

DOI

10.1109/PAC.1997.752766

Filename

752766