Generation of coherent undulator radiation using extremely short electron bunch at t-ACTS, Tohoku University

S. Kashiwagi, T. Abe, F. Hinode, T. Muto, K. Nanbu, K. Takahashi, I. Nagasawa, H. Saito, Y. Shibasaki, C. Tokoku, H. Hama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An accelerator test facility, t-ACTS, was established at Research Center for Electron Photon Science, Tohoku University, in which an intense coherent terahertz (THz) radiation is generated from an extremely short electron bunch. Velocity bunching scheme in a traveling-wave accelerating structure is employed to produce the short electron bunch. A long-period undulator, which has 25 periods with a period length of 10 cm and a peak magnetic field of 0.41 T, has been developed to produce intense coherent THz radiation. Properties of the radiation from the THz undulator such as an electric field of the radiation, the spectrum and, angular distribution were numerically investigated based on the parameters of short electron bunch and the THz undulator. By optimization of bunch compression, it is possible to extract a coherent radiation of fundamental mode excluding higher-order modes. The detail of the numerical studies for the coherent undulator radiation and a preparation of beam experiment are reported.

Original languageEnglish
Title of host publicationIPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference
PublisherJoint Accelerator Conferences Website (JACoW)
Pages1760-1762
Number of pages3
ISBN (Electronic)9783954501472
Publication statusPublished - 2016
Event7th International Particle Accelerator Conference, IPAC 2016 - Busan, Korea, Republic of
Duration: 2016 May 82016 May 13

Publication series

NameIPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference

Other

Other7th International Particle Accelerator Conference, IPAC 2016
CountryKorea, Republic of
CityBusan
Period16/5/816/5/13

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Atomic and Molecular Physics, and Optics

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