25–30 Sept 2016
Europe/Rome timezone
deadline for abstracts has expired

Textured polycrystal for increasing of positrons production

27 Sept 2016, 17:50
15m

Speaker

Dr Alexander Shchagin (Kharkov Institute of Physics and Tecknology)

Description

Now, positrons are produced in tungsten single-crystalline and amorphous targets, see, e.g., [1]. To regret, application of tungsten single-crystals is restricted because of a short dechanneling length of incident electrons. We propose to apply textured polycrystalline target for increasing of the positron production. The polycrystalline target can be produced as a set rolled tungsten foils and installed behind of a thin tungsten single-crystalline target. Application of textured polycrystalline target can increase the probability of the channeling of incident electrons and, hence, increase production of positrons. Channeling of electrons in textured (molybdenum) polycrystal recently has been observed in [2]. The research was supported by the Ministry of Education and Science of the Russian Federation, project 3.2009.2014/K. References [1]. X. Artru, I. Chaikovska, R. Chehab, M. Chevallier, O. Dadoun, K. Furukawa, H. Guler, T. Kamitani, F. Miyahara, M. Satoh, P. Sievers, T. Suwada, K. Umemori, A. Variola, Investigations on a hybrid positron source with a granular converter, NIM B 355 (2015) 60-64. [2] Y. Takabayashi, K. Ishiji, Observation of channeling effects for relativistic electrons in a polycrystal, NIM B 355 (2015) 53-56.

Primary author

Dr Alexander Shchagin (Kharkov Institute of Physics and Tecknology)

Presentation materials