Experimental Determination of the Characteristics of a Positron Source Using Channeling

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 axial...

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Bibliographic Details
Published in:arXiv.org 2000-08
Main Authors: Chehab, R, Cizeron, R, Sylvia, C, Baier, V, Beloborodov, K, Bukin, A, Burdin, S, Dimova, T, Drozdetsky, A, Druzhinin, V, Dubrovin, M, Golubev, V, Serednyakov, S, Shary, V, Strakhovenko, V, Artru, X, Chevallier, M, Dauvergne, D, Kirsch, R, Lautesse, Ph, J-C Poizat, Remillieux, J, Jejcic, A, Keppler, P, Major, J, Gatignon, L, Bochek, G, Kulibaba, V, Maslov, N, Bogdanov, A, Potylitsin, A, Vnukov, I
Format: Article
Language:English
Subjects:
Channeling
Computer simulation
Crystal structure
Electron beams
Synchrotrons
Tungsten
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Summary: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.
ISSN:2331-8422