Hybrid scheme of positron source at SPARC_LAB LNF facility /S. V. Abdrashitov, O. V. Bogdanov, S. B. Dabagov [et.al.]

Электронный ресурс
Другой Автор
Abdrashitov, S. V.
Dabagov, S. B.
Pivovarov, Yu. L.
Tukhfatullin, T. A.
Bogdanov, O. V.
Источник
Nuclear instruments and methods in physics research section B: beam interactions with materials and atoms 2015 Vol. 355. P. 65-68
Аннотация
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 〈1 0 0〉 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 s−1 at planar channeling, of 102–103 s−1 at bremsstrahlung and of 103–104 s−1 at axial channeling.
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статьи в журналах
Резюме
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 〈1 0 0〉 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 s−1 at planar channeling, of 102–103 s−1 at bremsstrahlung and of 103–104 s−1 at axial channeling.