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25 April 2024

» arxiv » physics/0008036

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Experimental Determination of the Characteristics of a Positron Source Using Channeling
R. Chehab ; R. Cizeron ; C. Sylvia ; V. Baier ; K. Beloborodov ; A. Bukin ; S. Burdin ; T. Dimova ; A. Drozdetsky ; V. Druzhinin ; M. Dubrovin ; V. Golubev ; S. Serednyakov ; V. Shary ; V. Strakhovenko ; X. Artru ; M. Chevallier ; D. Dauvergne ; R. Kirsch ; Ph. Lautesse ; J-C. Poizat ; J. Remillieux ; A. Jejcic ; P. Keppler ; J. Major ; L. Gatignon ; G. Bochek ; V. Kulibaba ; N. Maslov ; A. Bogdanov ; A. Potylitsin ; I. Vnukov ;
Date:	11 Aug 2000
Journal:	eConf C000821 (2000) MOB21
Subject:	Accelerator Physics \| physics.acc-ph
Abstract:	Numerical simulations and `proof of principle’ experiments showed clearly the interest of using crystals as photon generators dedicated to intense positron sources for linear colliders. An experimental investigation, using a 10 GeV secondary electron beam, of the SPS-CERN, impinging on an axially oriented thick tungsten crystal, has been prepared and operated between May and August 2000. After a short recall on the main features of positron sources using channeling in oriented crystals, the experimental set-up is described. A particular emphasis is put on the positron detector made of a drift chamber, partially immersed in a magnetic field. The enhancement in photon and positron production in the aligned crystal have been observed in the energy range 5 to 40 GeV, for the incident electrons, in crystals of 4 and 8 mm as in an hybrid target. The first results concerning this experiment are presented hereafter.
Source:	arXiv, physics/0008036
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