Author: Aumeyr, T.
Paper Title Page
WEPF18 Zemax Simulations of Diffraction and Transition Radiation 852
 
  • T. Aumeyr, P. Karataev
    JAI, Egham, Surrey, United Kingdom
  • M.G. Billing
    Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
  • L.M. Bobb, B. Bolzon, T. Lefèvre, S. Mazzoni
    CERN, Geneva, Switzerland
 
  Dif­frac­tion Ra­di­a­tion (DR) and Tran­si­tion Ra­di­a­tion (TR) are pro­duced when a rel­a­tivis­tic charged par­ti­cle moves in the vicin­ity of a medium or through a medium re­spec­tively. The tar­get atoms are po­larised by the elec­tric field of the charged par­ti­cle, which then os­cil­late thus emit­ting ra­di­a­tion with a very broad spec­trum. The spa­tial-spec­tral prop­er­ties of DR/TR are sen­si­tive to var­i­ous elec­tron beam pa­ra­me­ters. Sev­eral pro­jects aim to mea­sure the trans­verse (ver­ti­cal) beam size using DR or TR. This paper re­ports on how nu­mer­i­cal sim­u­la­tions using Zemax can be used to study such a sys­tem.  
poster icon Poster WEPF18 [0.573 MB]  
 
WEAL3 Diffraction Radiation Test at CesrTA for Non-Intercepting Micron-Scale Beam Size Measurement 619
 
  • L.M. Bobb, E. Bravin, T. Lefèvre, S. Mazzoni
    CERN, Geneva, Switzerland
  • T. Aumeyr, P. Karataev
    Royal Holloway, University of London, Surrey, United Kingdom
  • M.G. Billing, J.V. Conway
    Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
  • L.M. Bobb
    JAI, Egham, Surrey, United Kingdom
 
  Dif­frac­tion ra­di­a­tion (DR) is pro­duced when a rel­a­tivis­tic charged par­ti­cle moves in the vicin­ity of a medium. The elec­tric field of the charged par­ti­cle po­lar­izes the tar­get atoms which then os­cil­late, emit­ting ra­di­a­tion with a very broad spec­trum. The spa­tial-spec­tral prop­er­ties of DR are sen­si­tive to a range of elec­tron beam pa­ra­me­ters. Fur­ther­more, the en­ergy loss due to DR is so small that the elec­tron beam pa­ra­me­ters are un­changed. DR can there­fore be used to de­velop non-in­va­sive di­ag­nos­tic tools. To achieve the mi­cron-scale res­o­lu­tion re­quired to mea­sure the trans­verse (ver­ti­cal) beam size using in­co­her­ent DR in CLIC, DR in UV and X-ray spec­tral-range must be in­ves­ti­gated. Ex­per­i­men­tal val­i­da­tion of such a scheme is on­go­ing at Ces­rTA at Cor­nell Uni­ver­sity, USA. Here we re­port on the test using 0.5 mm and 1 mm tar­get aper­tures on a 2.1 GeV elec­tron beam and 400 nm wave­length.  
slides icon Slides WEAL3 [2.893 MB]