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Phys. Rev. ST Accel. Beams 9, 042801 (2006) [9 pages]

Bunch-by-bunch linac beam energy profile diagnostics using storage ring phase rotation and synchrotron radiation

Abstract
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Takahiro Matsubara, Shintarou Hisao, and Yoshihiko Shoji
Laboratory of Advanced Science and Technology for Industry (LASTI), University of Hyogo, 1-1-2 Kouto, Kamigori-cho, Ako-gun, Hyogo 678-1205, Japan

Takao Asaka and Shinsuke Suzuki
Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan

Received 19 May 2005; published 4 April 2006

This paper reports a new method of measuring the bunch-by-bunch energy profile of a linear accelerator (linac) electron beam, using a dual-sweep streak camera in the storage ring. This method records the evolution of the time profile in the storage ring following injection. A high-resolution linac beam energy profile is reconstructed from the time profile measured at one-quarter of a synchrotron oscillation period following injection. Conversion between the time profile and energy profile is based on results from a longitudinal phase space tracking simulation. By separating the streak camera images of the different bunches, a bunch-by-bunch energy profile can also be measured.

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© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevSTAB.9.042801
DOI:
10.1103/PhysRevSTAB.9.042801
PACS:
41.85.Ew, 29.17.+w, 29.30.Aj, 41.85.Qg