Visn. Nac. Akad. Nauk Ukr. 2017. (11): 53-65
https://doi.org/10.15407/visn2017.11.053

O.V. Dudnik
Institute of Radio Astronomy of the National Academy of Sciences of Ukraine, Kharkiv
http://orcid.org/0000-0002-5127-5843

SATELLITE TELESCOPE OF ELECTRONS AND PROTONS STEP-F OF THE SPACE SCIENTIFIC PROJECT CORONAS-PHOTON

The Ukrainian satellite telescope of electrons and protons STEP-F performed a scientific experiment in space on board of low Earth orbit spacecraft CORONAS-Photon in 2009. The article describes the background, stages of development, manufacturing and tests of weight-dimensional, breadboard, technological, flight and auxiliary models of the instrument, and of the control and test suites for the STEP-F. Principles of operation, design, technical and scientific characteristics of the instrument are described. Stages of adjustment, graduating and autonomous, docking, complex, ground pre-flight and flight tests are given. Scientific results obtained by the STEP-F instrument during deep minimum solar activity detected new features in high energy charge particle distributions inside radiation belts of the Earth, in the region of Brazil magnetic anomaly, and outside of referred volumes.
Keywords: Earth’s magnetosphere, satellite instrument, scintillation detector, silicon matrix, charge particles, radiation belt, solar activity, Brazil magnetic anomaly

 Language of article: ukrainian

 

REFERENCES

1.     Zalyubovsky I.I., Dudnik A.V., Kotov Yu.D., Yurov V.N. The International project PHOTON for the complex study of solar activity and Sun-Earth connections. Bulletin of the Russian Academy of Sciences: Physics. 1997. 61(6): 1173.

2.     Dudnik O.V., Zalyubovsky I.I. Scientific tasks of international space experiment “CORONAS-PHOTON”. Kosm. Nauka Tehnol. 2000. 6(2): 3.

3.     Dudnik O.V., Malykhina T.V. The computer simulation of deposited energies and stopping ranges of particles in the STEP spectrometer of the Warning space project. Kosm. Nauka Tehnol. 2003. 9(1): 15.

4.     Dudnik O.V., Goka T., Matsumoto H., Fujii M., Persikov V.K., Malykhina T.V. Computer simulation and calibration of the charge particle spectrometer–telescope STEP-F. Adv. Space Res. 2003. 32(11): 2367.

5.     Dudnik O., Goka T., Matsumoto H., Fujii M., Persikov V., Malykhina T., Kato H. Accelerator test of charge particle detectors for a satellite instrument STEP-F. RIKEN Accelerator Progress Report (Japan). 2003. 37: 168.

6.     Dudnik O.V., Persikov V.K., Zalyubovskiy I.I., Timakova T.G., Kurbatov E.V., Kotov Yu.D., Yurov V.N. High-sensitivity STEP-F spectrometer–telescope for high-energy particles of the CORONAS-PHOTON satellite experiment. Solar System Research. 2011. 45(3): 212.

7.     Dudnik O.V. Investigation of the Earth’s radiation belts in May, 2009, at the low orbit satellite with the STEP-F instrument. Kosm. Nauka Tehnol. 2010. 16(5): 12.

8.     Dudnik O.V. Variations of electron fluxes in the Earth radiation belts in May, 2009 due to “STEP-F” device observations. Journal of Kharkov National University. Physical series. 2010. 916(3): 56.

9.     Dudnik O.V., Podgorski P., Sylwester J., Gburek S., Kowalinski M., Siarkowski M., Plocieniak S., Bakala J. Investigation of electron belts in the Earth’s magnetosphere with the help of X-ray spectrophotometer SphinX and satellite telescope of electrons and protons STEP-F: preliminary results. Kosm. Nauka Tehnol. 2011. 17(4): 14.

10. Dudnik O.V., Podgorski P., Sylwester J., Gburek S., Kowalinski M., Siarkowski M., Plocieniak S., Bakala J. X-Ray spectrophotometer SphinX and particle spectrometer STEP-F of the satellite experiment CORONAS-PHOTON. preliminary results of the joint data analysis. Solar System Research. 2012. 46(2): 160.

11. Dudnik O.V. Dynamics of the Earth’s radiation belt electrons in May, 2009, on the base of the STEP-F instrument observations. In: Results of space experiment “CORONAS-PHOTON”: Proc. Workshop (May 19–21, 2010, Tarusa, Russia). (Moscow. IKI RAN, 2012). P. 103‑125.

12. Podgorski P., Dudnik O.V., Sylwester J., Gburek S., Kowalinski M., Siarkowski M., Plocieniak S., Bakala J. Joint analysis of SphinX and STEP-F instruments data on magnetospheric electron flux dynamics at low Earth orbit. Proc. 39th COSPAR Scientific Assembly (July 14–22, 2012, Mysore, India). P. 112.

13. Dudnik O. Unexpected behavior of subrelativistic electron fluxes under Earth radiation belts. In: HEPPA/SOLARIS-2012: 4th Int. workshop (October 9–12, 2012, Boulder, Colorado, USA). P. 15.

14. Dudnik O., Sylwester J., Podgorsi P., Gburek S. Radiation belts of the Earth: overview, methods of investigations, recent observations on the CORONAS-Photon spacecraft. In: Progress on EUV&X-ray spectroscopy and imaging: Proc. Int. Conf. (November 20–22, 2012, Wroclaw, Poland).

15. Dudnik O.V., Sylwester J., Podgorski P. Properties of magnetospheric high energy particles based on analysis of data from STEP-F and SphinX instruments aboard the “CORONAS−PHOTON” satellite. In: Space Research in Ukraine, 2012−2014. The Report to the COSPAR. Fedorov O.P. (ed.). (Kyiv: Akademperiodyka, 2014). P. 53‑61.

16. Dudnik O.V., Podgorski P., Sylwester J. New perspectives to study the splitting of drift shells at the outer magnetosphere by using STEP-F and SphinX instruments on board the CORONAS-Photon satellite. In: Progress on EUV&X-ray spectroscopy and imaging II: Proc. Int. Conf. (November 17–19, 2015, Wroclaw, Poland). P. 8.

17. Dudnik O.V., Podgorski P., Sylwester J.Combined study of radiation belts by the satellite particle telescope STEP-F and solar soft X-ray photometer SphinX during recent deep minimum of solar activity. In: Proc. 23 National Solar Physics Meeting (May 30 — June 3, 2016, Liptovský Mikuláš, Slovakia). P. 1–6.