Diagnostics of crystal-radiator of positrons by backward-going X-rays

Shchagin, A. V. (2011) Diagnostics of crystal-radiator of positrons by backward-going X-rays. Il nuovo cimento C, 34 (4). pp. 181-190. ISSN 1826-9885

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In the production of positrons by ultra-relativistic electrons channeling in a crystal-radiator the incident electrons produce X-ray radiation in the Crystal that is not used by now. In present paper we consider the properties of 3 kinds of X-ray radiation as the parametric X-ray radiation, the characteristic X-ray radiation, the diffracted transition radiation emitted in the backward direction from the crystalline radiator of positrons. We found that these kinds of quasi-monochromatic radiations can be registered by an X-ray spectrometer simultaneously with the production of positrons. We propose the observation of backward-going X-rays for the diagnostics of the crystal-radiator and electron beam status during production of positrons. Such on-line diagnostics can contribute to the optimization of the positron production. The same 3 kinds of radiation can be used for the diagnostics of the crystal-radiator during production of a coherent bremsstrahlung by the ultrarelativistic electron beam in a crystal and also for the diagnostics of bent crystals that are used for the steering of the high-energy particle beams trajectory. Besides, the diffracted transition radiation can be considered as a source of intense quasimonochromatic tunable X-rays beam excited by the high-energy particle beam in a crystal.

Item Type: Article
Uncontrolled Keywords: Radiation by moving charges ; Relativistic electron and positron beams
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 07 Apr 2020 16:24
Last Modified: 07 Apr 2020 16:24
URI: http://eprints.bice.rm.cnr.it/id/eprint/17331

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