Expected performance characteristic of accelerator-based THz source at Tohoku University

Hiroyuki Hama, M. Kawai, Shigeru Kashiwagi, Fujio Hinode, K. Nanbu, Toshiya Muto, Y. Tanaka, X. Li, N. Y. Huang

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

Abstract

Sources of coherent synchrotron radiation (CSR) at THz wavelength region have been constructed at Electron Light Science Centre, Tohoku University, Sendai, Japan. Bunch train of extremely shorter electron pulse less than 100 fs will be provided by an injector linac employing thermionic rf gun. Bunch compression will be performed by means of velocity bunching in an accelerator structure. Radiation sources under development are a Halbach type planar undulator and an accumulator isochronous ring. The undulator employs large gap and long period length configuration to secure sufficient free space for propagation of radiation. A resonant frequency around 1 THz is achieved by employing a lower beam energy of ∼ 20 MeV. Since spectrum of CSR is depending on longitudinal bunch form factor, we have calculated CSR spectra for various conditions of the beam to evaluate the performance of the THz sources. Numerical simulation with multi-particle system has been carried out to understand the radiation power and angular distribution as well. The beam transport in the undulator is crucial for quality of the radiation because the beam energy is very much low relative to strong focusing power.

Original languageEnglish
Title of host publicationIPAC 2011 - 2nd International Particle Accelerator Conference
Pages2990-2992
Number of pages3
Publication statusPublished - 2011 Dec 1
Event2nd International Particle Accelerator Conference, IPAC 2011 - Kursaal, San Sebastian, Spain
Duration: 2011 Sep 42011 Sep 9

Publication series

NameIPAC 2011 - 2nd International Particle Accelerator Conference

Other

Other2nd International Particle Accelerator Conference, IPAC 2011
CountrySpain
CityKursaal, San Sebastian
Period11/9/411/9/9

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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