Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8040561 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2015 | 4 Pages |
Abstract
The hybrid scheme of the positron source for SPARC_LAB LNF facility (Frascati, Italy) is proposed. The comparison of the positron yield in a thin amorphous W converter of 0.1 mm thickness produced by bremsstrahlung, by axial ã1 0 0ã and planar (1 1 0) channeling radiations in a W crystal is performed for the positron energy range of 1 ÷ 3 MeV. It is shown that the radiation from 200 MeV electrons (parameters of SPARC_LAB LNF Frascati) in a 10 μm W crystal can produce positrons in the radiator of 0.1 mm thickness with the rate of 10-102 sâ1 at planar channeling, of 102-103 sâ1 at bremsstrahlung and of 103-104 sâ1 at axial channeling.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
S.V. Abdrashitov, O.V. Bogdanov, S.B. Dabagov, Yu.L. Pivovarov, T.A. Tukhfatullin,