In-Flight Measurements of Radiation Environment on Board the Argentinean Satellite SAC-D

Böscher, D.; Cayton, T. E.; Maget, Vincent; Bourdarie, S.; Lázaro, D.; Baldran, T.; Bourdoux, Pierre; Lorfèvre, E.; Rolland, G.; Ecoffet, R.

doi:10.1109/tns.2014.2365212

Cited by 21 publications

(16 citation statements)

References 5 publications

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“…This paper focuses on the CNES ICARE-NG instrument onboard the low Earth orbiting Argentinian satellite SAC-D which flew between June 10, 2011 and June 8, 2015. The complete description of the satellite and instrument can be found in [11] and in [12]. The satellite was on a sunsynchronous orbit at a mean altitude of 650 km and an orbit inclination of 98.01°.…”

Section: Icare-ng Instrumentmentioning

confidence: 99%

“…Particle fluxes for electrons from 250keV to 3.2MeV and for protons from 12.8MeV to 190MeV are obtained. SAC-D was a spin-stabilized satellite, thus ICARE-NG always pointed to the same direction which was 45° from the zenith and from the satellite velocity vector (see [12] and section IV for more details). When the satellite was flying on descending orbits (decreasing latitudes), the ICARE-NG monitor recorded fluxes higher than the ones for ascending orbits (increasing latitudes).…”

Section: Icare-ng Instrumentmentioning

confidence: 99%

“…The Roederer model consists in calculating unidirectional flux from omnidirectional flux given by the AP8 model. The unidirectional flux expression perpendicular to the magnetic field extracted from [21] is given by (12).…”

Section: Model 4: Roederer Using Ap8 Modelmentioning

confidence: 99%

“…where J is the omnidirectional flux calculated using the AP8min model. The formula given in (12) allows the calculation of the unidirectional flux as a function of the magnetic field. However, in our case we compute the evolution of the unidirectional flux as a function of the equatorial pitch-angle.…”

Section: Model 4: Roederer Using Ap8 Modelmentioning

confidence: 99%

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Proton Radiation Belt Anisotropy as Seen by ICARE-NG Head-A

Ruffenach

Bourdarie

Mekki

et al. 2019

IEEE Trans. Nucl. Sci.

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The ICARE-NG instrument onboard the Argentinian satellite SAC-D detected much more protons during descending orbits (when latitude decreases) than for ascending orbits (increasing latitudes). In this paper we will investigate on the anisotropy seen by the ICARE-NG Head-A for protons in coincidence mode from Monte-Carlo simulations performed with GEANT4. Our simulations show that the difference in the fluxes observed during ascending and descending orbits comes from the fact that the instrument observed trapped protons or not on each point of the orbits as a result of the instrument and satellite orientations. In addition, we show in this paper that the measurements performed by ICARE-NG can be used in conjunction with our GEANT4 simulations to study the anisotropy of trapped protons, i.e. their distribution relative to their equatorial pitch-angle.

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Section: Icare-ng Instrumentmentioning

confidence: 99%

Section: Icare-ng Instrumentmentioning

confidence: 99%

Section: Model 4: Roederer Using Ap8 Modelmentioning

confidence: 99%

Section: Model 4: Roederer Using Ap8 Modelmentioning

confidence: 99%

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Proton Radiation Belt Anisotropy as Seen by ICARE-NG Head-A

Ruffenach

Bourdarie

Mekki

et al. 2019

IEEE Trans. Nucl. Sci.

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“…4) is calculated according to [8] as a function of proton incident energy, E (MeV), ), The ICARE-NG instrument is also composed of a radiation monitor. Two telescopes (A and C) and a single detector (B) allow for measurement of electrons and protons in the energy range 250 keV-3.2 MeV and 12.8-190 MeV, respectively [15]. The time resolution is 16s.…”

Section: Introductionmentioning

confidence: 99%