Observation of coherent transition radiation in the prewave zone

Transition radiation generated from a relativistic electron beam is used as a tool for diagnostics of the beam. Also, it can be used as a source of femtosecond (fs) THz radiation. We are generating the THz radiation with the pulse energy of 3μJ by means of the coherent transition radiation (CTR) fro...

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Published inPhysical review special topics. PRST-AB. Accelerators and beams Vol. 15; no. 3; p. 030706
Main Authors Yim, Changmook, Ko, Junho, Jung, Seonghoon, Han, Daehoon, Kim, Changbum, Park, Jaehun, Kang, Heung-Sik, Ko, In Soo
Format Journal Article
LanguageEnglish
Published College Park American Physical Society 19.03.2012
Subjects
Electrons
Form factors
Linear accelerators
Radiation
Relativistic electron beams
Spatial distribution
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ISSN1098-4402
1098-4402
2469-9888
DOI10.1103/PhysRevSTAB.15.030706

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Summary:Transition radiation generated from a relativistic electron beam is used as a tool for diagnostics of the beam. Also, it can be used as a source of femtosecond (fs) THz radiation. We are generating the THz radiation with the pulse energy of 3μJ by means of the coherent transition radiation (CTR) from 55-MeV electron beam in the fs-THz linac at the Pohang Accelerator Laboratory. The spatial distribution of CTR could be easily observed by using a pyroelectric camera. In this paper, we report observation of the transversal distribution of CTR in the prewave zone, and compare with calculated results based on the bunch form factor.
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ISSN:1098-4402
1098-4402
2469-9888
DOI:10.1103/PhysRevSTAB.15.030706