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

arXiv · physics/0008036

Experimental Determination of the Characteristics of a Positron Source Using Channeling

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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.

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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. 2000-08-11. Experimental Determination of the Characteristics of a Positron Source Using Channeling. https://arxiv.org/abs/physics/0008036

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