The computer simulation of deposited energies and stopping ranges of particles in the STEP spectrometer of the "Warning" space project

1Dudnik, OV, 2Malykhina, TV
1Institute of Radio Astronomy of National Academy of Sciences of Ukraine, Kharkiv, V.N. Karazin National University of Kharkiv, Kharkiv, Ukraine
2V.N. Karazin National University of Kharkiv, Kharkiv, Ukraine
Kosm. nauka tehnol. 2003, 9 ;(1):015-021
Publication Language: Russian
The software for simulating the processes of energetic particle passage through various materials is developed. We present the results of the Monte Carlo simulation of the processes of electron, proton, and α -particle passage through the detectors of the STEP satellite spectrometer of the Warning space mission with the use of the GEANT4.2 code. For each of the detectors, deposited energies, stopping ranges, as well as number of optical photons of charge particles and γ -quanta were calculated. The simulation shows that the device will allow one to detect fluxes and energy spectra of electrons in the range of 0.2–23 MeV, protons in the range of 3.5–76 MeV, and α -particles in the energy range of 13.7–307 MeV. We compared simulated results with the measurements of spectra of low energy electron and γ -quanta from radioactive sources using the laboratory setup and STEP device detectors. The laboratory measurements and of computer simulation results are found to be in rather good agreement.
Keywords: GEANT4.2, Monte Carlo simulation, STEP satellite
1. Aleshina M. E., Voronov S. A., Galper A. M., et al. Precipitation of the high energy particles from the Earth's radiation belt and seismic activity. Izvestija RAN. Ser. fizicheskaja, 57 (7), 97—99 (1993) [in Russian].
2. Gorn L. S., Khazanov B. I. Spectrometry of Ionizing Radiation on Board Space Vehicles, 245 p. (Atomizdat, Moscow, 1979) [in Russian].
3. Stopping powers of electrons and positrons: ICRU Report No. 37, 327 p. (Energoatomizdat, Moscow, 1987) [in Russian].
4. Dorman L. I. Experimental and theoretical foundations of cosmic ray astrophysics, 464 p. (Nauka, Moscow, 1975) [in Russian].
5. Sources and Effects of Ionizing Radiation: United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) 1977 Report to the General Assembly, with Scientific Annexes, Vol. 1 (New York, 1978) (Vols. 1-3; Vol. 1) [in Russian].
6. Kalashnikova V. I., Kozodaev M. S. Detectors of elementary particles, 408 p. (Nauka, Moscow, 1966) [in Russian].
7. Nemets O. F., Gofman Yu. V. Handbook in Nuclear Physics, 416 p. (Nauk. Dumka, Kiev, 1975) [in Russian].
8. Pustovetov V. P., Malyshev A. B. Space-time correlation of earthquakes and variation of high energy particle flux in the inner radiation belt. Kosmicheskie Issledovaniia, 31 (5), 84 —89 (1993) [in Russian].
9. Starodubtsev S. V. Complete Collection of Scientific Works: in 6 vols., Ed. by A. M. Romanov, Vol. 2: Nuclear Physics. Pt. 2. Interaction of Radiations with Matter, 379 p. (Fan, Tashkent, 1970) [in Russian].
10. Tsirlin Yu. A., Globus M. E., Sysoeva E. P. Optimization of Gamma Radiation Detection by Scintillator Crystals, 152 p. (Energoatomizdat, Moscow, 1991) [in Russian].
11. Daly E., Evans H., Lei F., et al. Space Applications of the GEANT4 Simulation Toolkit. In: Proc. of Monte Carlo 2000, Intern. Conf. on Advanced Monte Carlo for Radiation Physics, Particle Transport Simulation and Applications, 9 (Lisbon, Portugal, 2000).
12. GEANT4 Collaboration. GEANT4 User's Guide For Application Developers. Application Software Group, 294 p. (CERN, Geneva, 2001).
13. GEANT4 Collaboration. GEANT4 Physics Reference Manual. Application Software Group, 316 p. (CERN, Geneva, Switzerland, 2002).
14. Halbleib I. A., Melhorn T. A. In: ITS: The Integrated TIGER Series of Coupled Electron/Photon Monte-Carlo Transport Codes. Sandia Rep. SAND84-0073. Sandia National Laboratories, Albuquerque. (New Mexico, 1984).

15. Salvat F., Fernandez-Varea J. M., Acosta E., Sempau J. PENELOPE — A code system for Monte Carlo simulation of electron and photon transport. In: Workshop Proc. Issyles-Moulineaux, France, 5—7 November 2001. OECD/NEA Data Bank (2001).