Satellite provider: Roscosmos
Satellite name: “BION-M” №1
Experiment name: RD3-B3
Instrument name: RD3-B3

Cooperation: Bulgaria, Russia, Germany
Begin-end of data: 19/04/2013-13.05.2013
PI/CoPI: V. Shurshakov, IMBP; Ts. Dachev, SRTI
Main description Reference:
Dachev et al., 2014), http://dx.doi.org/10.1016/j.jastp.2014.12.011  
Units: Size [mm]/Mass [kg]: 1 battery operated DU inside the “BION-M” №1 satellite,
110х80х44 mm, 0.3 kg). The RD3-B3 instrument is a battery operated version of the spare model of the R3D-B3 instrument developed and built for the ESA BIOPAN-6 facility on Foton M3 satellite launched on September 2007 (Häder et al., 2009).
Place, Shielding [g cm^-2]: Inside the “BION-M” №1 satellite >2 g cm-²
Resolution [sec]/[min]: 60s

External view of “BION-M” №1 satellite

RD3 B3 instrument inside “BION-M” №1 satellite.

External view of RD3 B3 instrument

Block-diagram of RD3-B3 instrument.

 

Dose measurement algorithms and formulas*

The main measured parameter in the RD3-B3 instrument is the amplitude of the pulse after the CSA, generated by a particle or a photon partially or fully crossing the detector (Dachev et al., 2002). The amplitude of the pulse is proportional by a factor of 240mV/MeV to the energy deposited in the detector and to the dose, respectively. These amplitudes are digitized in an 8-bit ADC and organized in a 256-channel deposited energy spectrum.

By definition the dose in the silicon detector DSi [Gy] is one joule deposited in 1 kg of matter. The MDUs absorbed dose is calculated by dividing the summarized energy deposition in the spectrum in joules by the mass of the detector in kilograms:

 

where K is a coefficient. MD is the mass of the detector, and Eli is the energy loss in Joules in channel i. The energy in MeV is proportional to the amplitude A of the pulse: Eli [MeV] =A [V]/0.24 [V/MeV], where 0.24 [V/MeV] is a coefficient dependent on the preamplifier used and its sensitivity.

All 255 deposited dose values, depending on the deposited energy for one exposure period, form the deposited energy spectrum. Channel 256 accumulates all pulses with amplitudes higher than the upper energy of 20.83MeV measured by the spectrometer. The methods for characterization of the type of incoming space radiation are described in Dachev (2009), http://dx.doi.org/10.1016/j.asr.2009.08.007; and Dachev et al. (2017), https://doi.org/10.1002/2016SW001580.

Additional references, concerning RD3-B3 data:

Dachev, J., B. Tomov, Y. Matviichuk, P. Dimitrov, N. Bankov, V. Petrov, V. Shurshakov, O. Ivanova, D.-P. Häder, M. Lebert, M. Schuster, G. Reitz, G. Horneck, O. Ploc, Preliminary results for the radiation environment observed by RD3-B3 radiometer-dosimeter inside BION-M No1 spacecraft, Aerospace Research in Bulgaria, 25, 109-124 2014. http://www.space.bas.bg/Aerospace%20research/25/6.pdf

Dachev, T.P., B.T. Tomov, Yu.N. Matviichuk, Pl.G. Dimitrov, NG. Bankov, V. V. Shurshakov, O.A. Ivanova, D.-P. Häder, M.T. Schuster, G. Reitz, G. Horneck, “BION-M” №1 spacecraft radiation environment as observed by the RD3-B3 radiometer-dosimeter in April-May 2013, Journal of Atmospheric and Solar-Terrestrial Physics. 123, 82-91, 2015. http://dx.doi.org/10.1016/j.jastp.2014.12.011

Dachev, T.P., J.V. Semkova, B.T. Tomov, Yu.N. Matviichuk, Pl.G. S. Maltchev, R. Koleva, Pl., Dimitrov, N.G. Bankov, V.V., Shurshakov, V.V., Benghin, E.N., Yarmanova, O.A. Ivanova, D.-P. Häder, M.T. Schuster, G. Reitz, G. Horneck, Y. Uchihori, H. Kitamura, O. Ploc,  J. Kubancak, I. Nikolaev, Overview of the Liulin type instruments for space radiation measurement and their scientific results, 92–114, 2015. http://dx.doi.org/10.1016/j.lssr.2015.01.005

“DATA SOURCES” string description

Date/Time (DD/MM/YYYY hh:mm:ss); ascending or descending (A/D); altitude (ALT) (km); longitude (LONG) (deg); latitude (LAT) (deg); L value (L); total magnetic field strength (BMAG) (Gauss);

flux (FLUX) (cm^-2 s^-1); absorbed dose rate (DOSE) (mGy h^-1); dose to flux ratio (D/F) (nGy cm^-2 particle^-1); proton energy (PROENG) (MeV). All files are in csv format.

Link to the full text “DATA SOURCES” files: http://esa-pro.space.bas.bg/datasources/RD3_B3

Please acknowledge data provider:

1. Tsvetan Dachev, SRTI-BAS: tdachev@bas.bg or: tdachev59@gmail.com

URL: http://scholar.google.com/citations?user=uzmW_mwAAAAJ

2. Viacheslav Shurshakov, IBMP-RAS shurshakov@inbox.ru