Author:
Hwang Ji-Gwang,Miyajima Tsukasa,Honda Yosuke,Kim Eun-San
Abstract
Abstract
We demonstrate an experimental methodology for measuring the temporal distribution of pico-second level electron bunch with low energy using radial electric and azimuthal magnetic fields of an accelerating ($$\hbox {TM}_{01}$$
TM
01
mode) radio frequency (RF) cavity that is used for accelerating electron beams in a linear accelerator. In this new technique, an accelerating RF cavity provides a phase-dependent transverse kick to the electrons, resulting in the linear coupling of the trajectory angle with the longitudinal position inside the bunch. This method does not require additional devices on the beamline since it uses an existing accelerating cavity for the projection of the temporal distribution to the transverse direction. We present the theoretical basis of the proposed method and validate it experimentally in the compact-energy recovery linac accelerator at KEK. Measurements were demonstrated using a 2-cell superconducting booster cavity with a peak on-axis accelerating field ($$E_0$$
E
0
) of 7.21 MV/m.
Funder
the German Bundesministerium für Bildung und Forschung
Land Berlin
grants of Helmholtz Association
the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology
Publisher
Springer Science and Business Media LLC
Cited by
1 articles.
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