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Phys. Rev. ST Accel. Beams 12, 020101 (2009) [9 pages]

Time-dependent phase-space characterization of intense charged particle beams

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D. Stratakis*, R. A. Kishek, R. B. Fiorito, K. Tian, I. Haber, P. G. O’Shea, M. Reiser, and J. C. T. Thangaraj
Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA

Received 3 October 2008; published 18 February 2009

Knowledge of the three-dimensional structure of a charged particle beam bunch is essential for understanding its evolution and for initializing computer simulations, especially when space charge is involved. This paper presents a novel experimental method for time-sliced mapping of the transverse phase space of a space-charge dominated beam based on tomographic principles. The combination of a high precision tomographic diagnostic with fast imaging screens and a gated camera are used to produce phase-space maps of two beams: one with a parabolic current profile and another with a short perturbation atop a rectangular pulse. The correlations between longitudinal and transverse phase spaces are apparent and their impact on the dynamics is discussed.

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© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevSTAB.12.020101
DOI:
10.1103/PhysRevSTAB.12.020101
PACS:
29.27.−a, 52.59.Sa, 42.30.Wb

*Present address: Brookhaven National Laboratory, Upton, NY 11973.

Present address: Thomas Jefferson National Accelerator Facility, Newport News, VA 23606.