A scaled beam-combining experiment for heavy ion inertial fusion

Author

Seidl, P.A. ; Celata, C.M. ; Chupp, W.W. ; Faltens, A. ; Fawley, W.M. ; Ghiorso, W. ; Hahn, K. ; Henestroza, E. ; MacLaren, S. ; Peters, C.

Author_Institution

Lawrence Berkeley Lab., CA, USA

Volume

2

fYear

1997

fDate

12-16 May 1997

Firstpage

1926

Abstract

Transverse beam combining is a cost-saving option employed in many designs for induction linac heavy ion fusion drivers. The resultant transverse emittance increase, due predominantly to anharmonic space charge forces, must be kept minimal so that the beam remains focusable at the target. A prototype combining experiment has been built and preliminary results are presented. Four sources each produce up to 4.8 mA Cs⁺ beams at 160 keV. Focusing upstream of the merge consists of four quadrupoles and a final combined-function element (quadrupole and dipole). All lattice elements of the prototype are electrostatic. Due to the small distance between beams near the merge (~3-4 mm), the electrodes here are a cage of small rods, each at different voltage

Keywords

beam handling techniques; particle beam focusing; particle beam fusion accelerators; plasma inertial confinement; 160 keV; Cs; Cs⁺ beams; anharmonic space charge forces; beam-combining experiment; dipole; electrodes; heavy ion inertial fusion; quadrupole; quadrupoles; transverse beam combining; transverse emittance; Acceleration; Diodes; Electrostatics; Laboratories; Lattices; Molecular beam epitaxial growth; Particle beams; Prototypes; Space charge; Voltage;

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.1997.751063

Filename

751063