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Beam dynamics simulations of sub-ps electron bunch produced in a photo-injector

Abstract : A growing number of experiments require low emittance ultra-short electron bunches in the 100 fs range (rms value) for the production of coherent light or the injection into a plasma for laser-plasma acceleration. Especially in the last case it is highly desirable to have a compact accelerator; hence a strong experimental activity is carried out to get such a beam directly from a photo- injector. We have performed beam dynamic simulations using the PARMELA code to study the performances of the alphaX photo-injector installed in the University of Strathclyde in UK*. This RF gun is aimed to produce electron bunches which have 100 pC of bunch charge, 100 fs bunch length and 1 pi mmmrad transverse emittance. We will show the results of systematic parametric studies as a function of charge and laser pulse duration as well as the natural evolution of the beam phase space as a function of the distance from the photo- cathode.
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Submitted on : Wednesday, January 28, 2009 - 10:24:50 AM
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R. Roux. Beam dynamics simulations of sub-ps electron bunch produced in a photo-injector. XXIV Linear Accelerator Conference "LINAC'08", Sep 2008, Victoria, Canada. pp.248-250. ⟨in2p3-00356643⟩



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