A Fast Faraday Cup for the Neutralized Drift Compression Experiment

Author

Sefkow, A.B. ; Davidson, R.C. ; Efthimion, P.C. ; Gilson, E.P. ; Yu, S.S. ; Roy, P.K. ; Eylon, S. ; Bieniosek, F.M. ; Henestroza, E. ; Kwan, J.W. ; Coleman, J.E. ; Waldron, W.L. ; Greenway, W.G. ; Vanecek, D.L. ; Welch, D.R.

Author_Institution

Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543-0451, asefkow@pppl.gov

fYear

2005

fDate

16-20 May 2005

Firstpage

3765

Lastpage

3767

Abstract

Heavy ion drivers for high energy density physics applications and inertial fusion energy use space-charge-dominated beams which require longitudinal bunch compression in order to achieve sufficiently high beam intensity at the target. The Neutralized Drift Compression Experiment-1A (NDCX-1A) at Lawrence Berkeley National Laboratory (LBNL) is used to determine the effective limits of neutralized drift compression. NDCX-1A investigates the physics of longitudinal drift compression of an intense ion beam, achieved by imposing an initial velocity tilt on the drifting beam and neutralizing the beam’s space-charge with background plasma. Accurately measuring the longitudinal compression of the beam pulse with high resolution is critical for NDCX-1A, and an understanding of the accessible parameter space is modeled using the LSP particle-in-cell (PIC) code. The design and preliminary experimental results for an ion beam probe which measures the total beam current at the focal plane as a function of time are summarized.

Keywords

Ion beams; Laboratories; Particle beam measurements; Particle beams; Particle measurements; Physics; Plasma measurements; Probes; Pulse compression methods; Pulse measurements;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the

Print_ISBN

0-7803-8859-3

Type

conf

DOI

10.1109/PAC.2005.1591610

Filename

1591610