Hybrid positron-source scheme intended for the SPARC accelerator facility at the LNF
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- 作者：S. B. Dabagov ; S. V. Abdrashitov…
- 关键词：channeling radiation ; positron source
- 刊名：Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques
- 出版年：2016
- 出版时间：January 2016
- 年：2016
- 卷：10
- 期：1
- 页码：254-260
- 全文大小：768 KB
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S. V. Abdrashitov (4) (5)
O. V. Bogdanov (4)
Yu. L. Pivovarov (4) (6)
T. A. Tukhfatullin (4)
1. Instituto Nazionale di Fisica Nucleare Laboratori Nazionali di Frascati, Frascati, Rome, 1-00044, Italy
2. Lebedev Physics Institute, Russian Academy of Sciences, Moscow, 119991, Russia
3. National Research Nuclear University “MEPhI” (Moscow Engineering Physics Institute), Moscow, 115409, Russia
4. National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
5. National Research Tomsk State University, Tomsk, 634050, Russia
6. V.E. Zuev Institute of Atmospheric Optics, Tomsk, 634021, Russia
Surfaces and Interfaces and Thin Films
Russian Library of Science
文摘
A hybrid positron-source scheme based on an electron beam of the Sorgente Pulsata e Amplificata di Radiazione Coerente test facility installed at the Laboratori Nazionali di Frascati (Frascati, Italy) is proposed. In the case of a thin (0.1-mm-thick) amorphous converter, the positron yields per primary electron are compared at positron energies of 1–3 MeV under bremsstrahlung generation and (110)-plane channeling conditions. The radiation of 200-MeV electrons (200 MeV is the parameter of the SPARC accelerator at the LNF) channeled in a 10-µm-thick tungsten radiator is demonstrated to create positron yields of 104–105 s–1 in a 0.1-mm-thick W converter.