Open AccessNSC KIPT POSITRON SOURCE. PRE-PROJECT RESEARCH
Author(s) -
E.V. Bulyak,
А.N. Dovbnya,
В.А. Кушнир,
V.V. Mytrochenko,
S.A. Perezhogin,
A. N. Opanasenko
Publication year - 2020
Publication title -
problems of atomic science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.216
H-Index - 17
eISSN - 1562-6016
pISSN - 1682-9344
DOI - 10.46813/2020-127-011
Subject(s) - positron , physics , adiabatic process , solenoid , electron , beam (structure) , computational physics , cathode ray , atomic physics , nuclear physics , optics , quantum mechanics , thermodynamics
We present the results of theoretical and numerical studies on the source of slow positrons for NSC KIPT. The positrons are intended to generate with the electrons of 9, 40 or 90 MeV available at the KIPT electron linacs. The yield of positrons from the conversion target is estimated as well as their spatial-angular characteristics. Optimal parameters of the conversion target for each energy of electrons are estimated. Preliminary design of the positron beam formation system is also presented. Qualitative analytical dependencies of the positron beam parameters at the system exit upon the amplitude and the decrease factor of the magnetic field in the Adiabatic Matching Device (AMD) solenoid have been established. These dependencies have been used for system optimization. Numerical simulations allow to optimize the parameters of AMD for solenoid available in the laboratory. Possible application of the subharmonic RF cavity for reduction of the energy of positrons has also been estimated and validated by the simulations. As it has been shown, this cavity can substantially decrease the positron energy and thus facilitate operation of the moderator.