[en] The economic method for definition of unbiased estimates of drift chamber parameters (drift velocity, start signal) is presented. The method has been successfully tested by Monte Carlo and experimental data analysis. 7 refs.; 1 fig

[en] The economic method for definition of unbiased estimates of parameters of discrete detetor local coordinate systems is described. The method has been tested by Monte-Carlo. 6 refs

[en] On the basis of analysis of the present state of some problems of computer graphics and on-line experiments a software system is created. It is intended for generating and graphical representation and for operative interaction with these associated processes. The system of graphical representation is used in JINR experiments on the ES computer to output data on displays with storage tubes and TEKRONI 4051 graphical computer system. This software has wide possibilities for solving problems of modern experiment control and data processing, is very simple in utilization, application and adaptation

[en] Solution of main data analysis tasks for the cathode strip chamber is proposed. Methods provide reconstruction of the transmission function (for transformation results of measurements to coordinated of a particle), track finding and optimal track parameter estimation. Factors which define spatial resolution were found. Results are useful both for data analysis and optimal detector structure searching. (author)

[en] Comparative analysis of the rates of statistical distribution collection by means of the HFILL and HFF1 programs being a part of the HBOOK package of service programs is made. The computer-independent and ES-oriented versions of the HFF1 program having faster one-dimensional distribution collection are described. The rates of data collection when using these versions are increased by 6 and 10 times correspondingly as compared with the HFILL program. The rate increase is achieved by intermodule realizing the functions of resulting array compression, decreasing the volume of quasidynamic characteristics calculation, taking into account the computer byte structure and optimizing the algorithms of dynamic structure element search. The results obtained give an opportunity to optimize the process of experimental data statistical processing selecting the proper programs and the mode of their operation

[en] New methods for calculation of a mass of J/Ψ and K_S⁰ necessery for determination of B_d⁰ mass in a new approach to the measurement of CP-violation in B decays are presented. These methods have high speed of calculation and can be adapted simply for a new condition of experiment and can be applied for a set-up with complicated magnetic fields. A new method for analysis of K_S⁰ events (noncomplete topology case) is presented, this method reconstructs vertex coordinates and kinematic parameters of pions in K_S⁰ decays concurently. The precision of calculation of a mass of B_d⁰ - 117 MeV, J/Ψ -286 MeV, K_s⁰ (complete topology) - 9 MeV, K_S⁰ (noncomplete topology) - 14 MeV. 16 refs.; 8 figs

[en] Simulating by means of computer of the process of passage of the monoenergetic alpha-particle beam through a nonhomogeneous matter consisting of homogeneous media is described. This process is decisive at the performance of experimental investigations in the field of ion radiography. Algorithms and simulation results for some configurations of experimental setup are given. The results obtained at simulating of the existing setup agree well with those obtained when working with a reference phantom

[en] The ME1/1 cathode strip chambers are the part of the CMS endcap muon system. They were designed and produced in Dubna. The chambers have been installed in the detector and commissioning has been completed. This paper describes chamber readout electronics and presents the results of the tests with cosmic-ray muons

[en] The aim of this work is to increase the efficiency of muon track reconstruction and estimate a number of electromagnetic secondaries in the muon detector on experimental data of the Integrated Test set-up, the prototype of CMS end cap segment. The experimental data have shown that the high energy beam of muons (100-300 GeV) produces 20-25% of events with electromagnetic secondaries. Though the muon coordinate measurements were distorted by secondaries, we have managed to obtain a high efficiency (≥ 92%) of the muon track reconstruction

[en] Methods for determining parameters of the transfer function at the transition from time values stored by the detecting apparatus to co-ordinates of particle trajectory points are presented. Methods for determination of drift chamber efficiency and accuracy taking into account the contribution of the multiple Coulomb scattering are also described. Methods for determining parameters of the transfer function are based on the discrimination of its linear parts and their parameter determination using information from proportional chambers