FASTRAD 3.2: Radiation Shielding Tool with a New Monte Carlo Module

Pourrouquet, Pierre; Thomas, Jean‐Charles; Peyrard, P. F.; Ecoffet, R.; Rolland, G.

doi:10.1109/redw.2010.6062530

Cited by 18 publications

(11 citation statements)

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“…[52] The FASTRAD toolkit [e.g., Pourrouquet et al, 2011] was used to import the CAD geometries of the spacecraft components and instruments surrounding the GRS ( Figure A3) into the Geant4 application to reproduce the upper third of the spacecraft. With this model, the efficiency of the GRS was characterized for incident angles ranging over 0 < q D < 130 in a 2 Â 2 grid in q D and 8 D space.…”

Section: A3 Modeled Responsementioning

confidence: 99%

Variations in the abundances of potassium and thorium on the surface of Mercury: Results from the MESSENGER Gamma‐Ray Spectrometer

et al. 2012

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A technique for converting gamma‐ray count rates measured by the Gamma‐Ray Spectrometer on the MESSENGER spacecraft to spatially resolved maps of the gamma‐ray emission from the surface of Mercury is utilized to map the surface distributions of the elements Si, O, and K over the planet's northern hemisphere. Conversion of the K gamma‐ray count rates to elemental abundances on the surface reveals variations from 300 to 2400 ppm. A comparison of these abundances with models for the maximum surface temperature suggests the possibility that a temperature‐related process is controlling the K abundances on the surface as well as providing K to the exosphere. The abundances of K and Th have been determined for several geologically distinct regions, including Mercury's northern smooth plains and the plains interior to the Caloris basin. The lack of a significant variation in the measured Th abundances suggests that there may be considerable variability in the K/Th abundance ratio over the mapped regions.

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Section: A3 Modeled Responsementioning

confidence: 99%

Variations in the abundances of potassium and thorium on the surface of Mercury: Results from the MESSENGER Gamma‐Ray Spectrometer

et al. 2012

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“…As part of the radiation engineering activities of OPTOS mission, a full radiation tolerance analysis was carried out. This analysis included the characterization of the expected high-energy particle fluxes during the mission and a detailed simulation study on the propagation of such fluxes through a full 3D model of the platform (with the FASTRAD [15] tool), which considered the main shielding structures and subsystems. The final aim was to provide a realistic estimation of the radiation levels intraspacecraft in the form of particle spectral fluxes and cumulated ionizing and nonionizing doses at selected locations and components.…”

Section: Computer Radiation Assurancementioning

confidence: 99%

Data Analysis and Results of the Radiation-Tolerant Collaborative Computer On-Board OPTOS CubeSat

Martín-Ortega

Rodríguez

Mingo

et al. 2019

International Journal of Aerospace Engineering

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The current evolution of the space missions demands to increase the computing capacities of the on-board computer while reducing its power consumption. This requirement evolves faster than the ability of the manufacturers to develop better space-qualified processors. To meet the strong requirements, the National Institute of Aerospace Technology has developed a distributed on-board computer based on commercial off-the-shelf (COTS). This computer, named OPTOS, provides enhanced computational capacities with respect to what computers of other small satellites typically provide. To maintain the reliability needed to perform typical critical activities such as real-time maintenance or current surveillance, authors have conceived a set of collaborative hardening techniques, taking advantage of the distributed architecture of the OPTOS On-Board Computer. The 3-year mission data analysis shows the feasibility of the collaborative hardening techniques implemented, despite using SEU sensitive devices. The authors describe the processes and tools used to analyse the data and clearly expose the functional errors found at unit level, while the system remains unfaulty and reliable thanks to the collaborative techniques.

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“…Those surveyed considered the effects of TID/DDD on the system by using an environmental flux model such as AP9/AE9 or AP8/AE8 along with transport models such as NOVICE [ Jordan , ] or FASTRAD [ Pourrouquet et al ., ] to predict mission TID/DDD. Most will also use tools such as CREME [ Tylka et al ., ] or CREME‐MC [ Weller et al ., ; Mendenhall and Weller , ] to ensure that SEU rates due to GCR and trapped protons as well as peak solar proton event fluxes are within the expected and accepted limits.…”

Section: Main Findingsmentioning

confidence: 99%

Impact of space weather on the satellite industry

Green¹,

Likar²,

Shprits

2017

Space Weather

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This paper describes space weather impacts to the satellite infrastructure as perceived by satellite industry stakeholders. The information was gathered through in‐person and remote meetings with both satellite operators and manufacturers. The paper describes current impacts, industry processes for managing and mitigating impacts, costs, and industry needs and requirements. Lastly, we suggest potential improvements and solutions to problem areas based on our observation of the industry processes including (1) improved tools for quick anomaly attribution, (2) training, and (3) coordinated information sharing.

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FASTRAD 3.2: Radiation Shielding Tool with a New Monte Carlo Module

Cited by 18 publications

References 1 publication

Variations in the abundances of potassium and thorium on the surface of Mercury: Results from the MESSENGER Gamma‐Ray Spectrometer

Variations in the abundances of potassium and thorium on the surface of Mercury: Results from the MESSENGER Gamma‐Ray Spectrometer

Data Analysis and Results of the Radiation-Tolerant Collaborative Computer On-Board OPTOS CubeSat

Impact of space weather on the satellite industry

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