Physical Review Special Topics. Accelerators and Beams (Mar 2012)

Observation of coherent transition radiation in the prewave zone

  • Changmook Yim (임창묵),
  • Junho Ko (고준호),
  • Seonghoon Jung (정성훈),
  • Daehoon Han (한대훈),
  • Changbum Kim (김창범),
  • Jaehun Park (박재헌),
  • Heung-Sik Kang (강흥식),
  • In Soo Ko (고인수)

DOI
https://doi.org/10.1103/PhysRevSTAB.15.030706
Journal volume & issue
Vol. 15, no. 3
p. 030706

Abstract

Read online Read online

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 3 μJ 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.