[en] The 14th Meeting on the charged particle accelerators took place on October 25-27, at the IHEP. A wide range of problems related to the theory and experimental investigations of accelerators as well as questions referring to technology of developing new equipment and to a possibility of using the accelerators for applied purposes was discussed

[en] The first experiments on applying HTSC films to the working surface of galvanic copper using a buffer layer (Ag, Ni, Al, AL-Cu) are described. The copper shell of the superconducting complex TESLA-shape type geometry resonator is produced by galvanoplastic shaping method. Superconducting Y-Ba-Cu-O base coating is applied using planar or axial magnetron sputtering method. The first results of measuring the parameters of HTSC/copper base samples and resonators are presented. 28 refs.; 3 figs

[en] Results of investigations related to the development of a new analytical model for studying the connection of electrodynamic systems through minor openings are presented. A model of a homogeneous diaphragmed waveguide allowing one to take a sequential account of interaction between an arbitrary diaphragm number is constructed on the base of the earlier presented model of two linked resonators. It is underlined that the approach described allows one to calculate a series of SHF-system characteristics important for studying the dynamics of charged particle interaction with electrodynamic structures. 10 refs.; 2 figs.; 1 tab

[en] The problem of optimizing the dynamics of a charged particle beam with high volumetric charge density in an accelerating structure with space-homogeneous quadrupole focusing (SHQF) is considered. The mathematical model of interacting particle dynamics is based on equations for beam envelopes. The optimization criterion (functional) is selected from the terms of obtaining a structure with an assigned length, beam energy at the accelerator outlet and the maximum particle capture for acceleration mode. A method for determining tolerance for the structure parameters based on optimization algorithm is proposed for the structure with SHQF. 4 refs.; 2 figs

[en] External laser injector of multicharged ions (MCI) is developed in which wide-aperture aberration-free wire gauze spherical shape electrodes are applied for effective MCI extraction from laser plasma and beam focusing. Axial plasma compression by solenoid magnetic field is used to reduce ion losses due to transverse movement of the scattering laser plasma. Transverse magnetic field created by another solenoid facilitates the effective laser plasma braking and consequently, leads to the narrowing of energy spectrum of plasma ions and its shift towards lower energies. 2 refs.; 3 figs

[en] A complex of experimental and process equipment allowing one to conduct investigations into emission phenomena including autoelectron emission, different types of secondary emission (electron, ion, proton), as well as investigations using HPMS and Auger-electron spectroscopy methods is described. Methods of acoustic and exoelectron emission have been recently applied in superconducting resonator technology, basic principles of acoustic and exoelectron emission, requirements to equipment and the methods applied are presented. 6 refs.; 4 figs

[en] The first results of studying the autoemission, physico-chemical and electro-physical properties of N₂V alloy are presented. The work is aimed at determining the possibilities of using this alloy in superconducting resonator technology. 9 refs.; 4 figs.; 2 tabs

[en] Problems are solved for finding the optimal structure of the spiral rod-type RFQ for the TRIUMF cyclotron. The structure should provide the minimum RF losses and minimum excitations of parasitic modes. The investigation is carried out by means of the MAFIA code. 3 refs.; 11 figs.; 5 tabs

[en] Results of measuring the energy spread and long-term stability of the tandem accelerator proton beam average energy using the resonance nuclear reaction method after the installation of a generator for supply of pulse cascade generator converter and stabilization system electron units, are presented. 5 refs.; 5 figs

[en] The following scheme of ion beam cooling is considered. In a straight section of a storage ring, a photon beam is directed towards the ion beam and is scattered by the ions. In the relative case, the energy of scattered protons will be much more than the energy of the initial photons. Since the scattered radiation is directed mainly along the direction of ion velocity, it will lead to a dissipative force and damping of both transverse and longitudinal oscillations of ions in the storage ring. 27 refs.; 3 tabs