Partial Focusing of Coherent Optical Transition Radiation and Measurement of Transverse Size of Femtosecond Electron Bunches

T. M. Gusvitskii, A. P. Potylitsyn

Research output: Contribution to journalArticlepeer-review

Abstract

Coherent optical transition radiation (COTR) from femtosecond electron bunches is simulated using an earlier proposed model. It is shown that partial screening of the COTR field followed by focusing with a lens allows increasing the spatial resolution and makes it possible to measure transverse bunch sizes accurate within a few microns. It is demonstrated that the most reasonable lens screening ratio equals to 50%. Given this, it is possible to eliminate the ring-like structure typically observed on bunch images as a result of coherence.

Original languageEnglish
Pages (from-to)2076-2084
Number of pages9
JournalRussian Physics Journal
Volume63
Issue number12
DOIs
Publication statusPublished - Apr 2021

Keywords

  • beam image
  • coherent optical transition radiation
  • electron beam
  • electron bunch
  • linear accelerators
  • optical system

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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