High brightness potassium ion gun for the HIF Neutralized Transport Experiment (NTX)

Author

Eylon, S. ; Henestroza, E. ; Roy, P.K. ; Yu, S.S.

Author_Institution

Lawrence Berkeley Nat. Lab., CA, USA

Volume

4

fYear

2003

fDate

12-16 May 2003

Firstpage

2616

Abstract

The NTX experiment at the Heavy Ion Fusion Virtual National Laboratory is exploring the performance of neutralized final focus systems for high perveance heavy ion beams. To focus a high intensity beam to a small spot requires a high brightness beam. In the NTX experiment, a potassium ion beam of up to 400 keV and 80 mA is generated in a Pierce type diode. At the diode exit, an aperture with variable size provides the capability to vary the beam perveance and to significantly reduce the beam emittance. We shall report on the gun characterization including current density profile, phase space distributions and the control of electrons generated by the beam scraping at the aperture. Comparison with particle simulations using the EGUN code will be presented.

Keywords

diodes; fusion reactor ignition; ion beams; ion sources; nuclear electronics; particle beam diagnostics; particle beam focusing; physics computing; plasma inertial confinement; potassium; EGUN code; HIF Neutralized Transport Experiment; Heavy Ion Fusion Virtual National Laboratory; NTX; Pierce type diode; aperture; beam scraping; current density profile; high brightness potassium ion gun; high intensity beam; high perveance heavy ion beams; neutralized final focus systems; particle simulations; phase space distributions; small spot; Apertures; Brightness; Current density; Current measurement; Diodes; Electron beams; Electron emission; Electron traps; Ion beams; Laboratories;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the

ISSN

1063-3928

Print_ISBN

0-7803-7738-9

Type

conf

DOI

10.1109/PAC.2003.1289207

Filename

1289207