arXiv subjects
Publications and source records attributed to T. V. Malykhina.
The electromagnetic sampling calorimeters of the SPD experiment (NICA collider) are being investigated by Monte Carlo method. The simulation is used to study in detail the influence of energy leakages from the module on its energy resolution. The values of the stochastic and constant terms are obtained for the SPD calorimeter prototypes.
The processes of interaction of an aqueous solution of methylene blue (MB) organic dye ($C_{16}H_{18}N_{3}SCl$ ) with gamma quanta and electrons have been investigated. A model has been developed, and the passage of electrons with an energy of 15 MeV through tungsten layers with a thickness of 1...8 mm has been simulated. A number of experiments were carried out on the basis of the simulation results. Analysis of the calculated and experimental data showed that one incident electron destroys 4 times more dye molecules than one incident gamma-quantum.
The Monte Carlo calculations of the Moliere radius (RM) for some homogeneous and heterogeneous media used in electromagnetic calorimetry in the energy range from 50 MeV to 10 GeV are presented in detail. The obtained results, the uncertainties in determining RM, estimations of the absorbed energy, methods for approximating the absorbed energy, and the accuracy of the results are discussed as well. Some RM are shown for calorimeter prototypes of the Spin Physics Detector experiment (SPD). A one-parameter function of the Moliere radius dependence on the absorber-scintillator thickness ratio is obtained.