Experiment of positron generation using a crystal target at the KEK electron/positron linac; Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms; Vol. 173, iss. 1-2 : Radiation from Relativistic Electrons in Periodic Structures
| Parent link: | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms: Scientific Journal.— , 1984- Vol. 173, iss. 1-2 : Radiation from Relativistic Electrons in Periodic Structures.— 2001.— [P. 104-111] |
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| Další autoři: | , , , , , , , , , , , , , , , , |
| Shrnutí: | Title screen We have performed an experiment of positron generation using a crystal target at an electron/positron linac at KEK. The target consists of a tungsten crystal to emit photons and an amorphous tungsten for pair creation, whose thicknesses are 0.5 and 2.0 radiation length, respectively. When the ?1 1 1? crystal axis is oriented parallel to the 3 GeV incident electron beam, the positron yield is enhanced by 40% compared to values for the disoriented crystal. No effect of injecting intense ultra-short electron bunches on the crystalline structure is observed. The crystal orientation dependence of the positron yield as well as the enhancement factor can be explained by a simulation assuming a coherent bremsstrahlung process of the electron in the crystal. Режим доступа: по договору с организацией-держателем ресурса |
| Jazyk: | angličtina |
| Vydáno: |
2001
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| Témata: | |
| On-line přístup: | http://dx.doi.org/10.1016/S0168-583X(00)00195-6 |
| Médium: | Elektronický zdroj Kapitola |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=643847 |