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      Multi-component measurements of the Jefferson Lab energy recovery linac electron beam using optical transition and diffraction radiation

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          Abstract

          High brightness electron accelerators, such as energy recovery linacs (ERL), often have complex particle distributions that can create difficulties in beam transport as well as matching to devices such as wigglers used to generate radiation from the beam. Optical transition radiation (OTR), OTR interferometry (OTRI) and optical diffraction-transition radiation interferometry (ODTRI) have proven to be effective tools for diagnosing both the spatial and angular distributions of charged particle beams. OTRI and ODTRI have been used to measure rms divergences and optical transverse phase space mapping has been demonstrated using OTRI. In this work we present the results of diagnostic experiments using OTR and ODR conducted at the Jefferson Laboratory 115 MeV ERL which show the presence of two separate components within the spatial and angular distributions of the beam. By assuming a correlation between the spatial and angular features we estimate an rms emittance value for each of the two components.

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          Author and article information

          Journal
          27 June 2008
          Article
          10.1103/PhysRevSTAB.11.082801
          0806.4406

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

          Custom metadata
          Phys.Rev.ST Accel.Beams 11:082801,2008
          25 pages, 10 figures; accepted for publication in PRSTAB; minor formatting errors corrected
          physics.acc-ph

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