High resolution beam monitoring with optical transition radiation at 3MeV electron energy

  • A. Specka
  • , D. Bernard
  • , R. Guirlet
  • , F. Jacquet
  • , P. Mine
  • , B. Montes
  • , R. Morano
  • , P. Poilleux
  • , F. Amiranoff
  • , J. Morillo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In the framework of the plasma beat wave accelerator experiment at Ecole Polytechnique, high precision position and focussing monitoring of a 3 MeV electron beam is needed. A device is proposed that uses backward optical transition radiation (OTR) from a tilted metal foil held into the beam. For an electron energy of 3 MeV, OTR is emitted within a large solid angle (typical apex angle about 40°) around the direction of specular reflection. The design requirements are a high resolution of the imaging optics (≈ 10 μm), a high sensitivity (≈ 10μA beam current, not focussed), robustness, and low cost. A prototype has been constructed and successfully tested. A similar device will be used for adjusting a laser focal spot on an electron focal spot, and for monitoring the beam on entry and exit of a gas vessel.

Original languageEnglish
Title of host publicationProceedings of the IEEE Particle Accelerator Conference
PublisherPubl by IEEE
Pages2450-2452
Number of pages3
ISBN (Print)0780312031
Publication statusPublished - 1 Dec 1993
EventProceedings of the 15th Biennial Particle Accelerator Conference - Washington, DC, USA
Duration: 17 May 199320 May 1993

Publication series

NameProceedings of the IEEE Particle Accelerator Conference
Volume3

Conference

ConferenceProceedings of the 15th Biennial Particle Accelerator Conference
CityWashington, DC, USA
Period17/05/9320/05/93

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