Electron-beam diagnostic for space-charge measurement of an ion beam

Journal Article · Tue Feb 01 00:00:00 EST 2005 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1847392· OSTI ID:20644083

Roy, Prabir K; Yu, Simon S; Henestroza, Enrique; Eylon, Shmuel; Shuman, Derek B; Ludvig, Jozsef; Bieniosek, Frank M; Waldron, William L; Greenway, Wayne G; Vanecek, David L; Hannink, Ryan; Amezcua, Monserrat ^[1]

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1. Lawrence Berkeley National Laboratory, University of California, 1 Cyclotron Road, Berkeley, California 94720 (United States)

A nonperturbing electron-beam diagnostic system for measuring the charge distribution of an ion beam is developed for heavy ion fusion beam physics studies. Conventional diagnostics require temporary insertion of sensors into the beam, but such diagnostics stop the beam, or significantly alter its properties. In this diagnostic a low energy, low current electron beam is swept transversely across the ion beam; the measured electron-beam deflection is used to infer the charge density profile of the ion beam. The initial application of this diagnostic is to the neutralized transport experiment (NTX), which is exploring the physics of space-charge-dominated beam focusing onto a small spot using a neutralizing plasma. Design and development of this diagnostic and performance with the NTX ion beamline is presented.

• OSTI ID: 20644083
• Journal Information: Review of Scientific Instruments, Vol. 76, Issue 2; Other Information: DOI: 10.1063/1.1847392; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CHARGE DENSITY
CHARGE DISTRIBUTION
DESIGN
ELECTRON BEAMS
ELECTRON GUNS
HEAVY IONS
ION BEAMS
PERFORMANCE
SPACE CHARGE