Klystron instability of a relativistic electron beam in a bunch compressor

In this paper, we consider a klystron-like mechanism of amplification of parasitic density modulations in an electron bunch passing a magnetic bunch compressor. Analytical expressions are derived for the small-signal gain. The effect of wakefields in front of the bunch compressor is analyzed by usin...

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Bibliographic Details
Published inNuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 490; no. 1; pp. 1 - 8
Main Authors Saldin, E.L., Schneidmiller, E.A., Yurkov, M.V.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.09.2002
Subjects
Amplification
Beam dynamics
Bunch compressor
Coherent synchrotron radiation
Wakefields
Amplification
Wakefields
Bunch compressor
29.27.Bd
41.75.Ht
Coherent synchrotron radiation
Beam dynamics
41.60.Ap
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Summary:In this paper, we consider a klystron-like mechanism of amplification of parasitic density modulations in an electron bunch passing a magnetic bunch compressor. Analytical expressions are derived for the small-signal gain. The effect of wakefields in front of the bunch compressor is analyzed by using a model of linear compression which assumes linear correlated energy chirp and linear dependence of a path length on energy deviation. Analysis of the density modulation growth due to coherent synchrotron radiation inside bends of the magnetic bunch compressor is done for the simplified case of no correlated energy chirp (no compression). Analytical results of this paper can be used for benchmarking numerical simulation codes.
ISSN:0168-9002
1872-9576
DOI:10.1016/S0168-9002(02)00905-1