Dr
Thierry Paulmier
(ONERA)
06/12/2013, 09:30
Charging effects are usually dominated by two main parameters: electron emission [yield and spectrum] (under electron or photon irradiation) and bulk conductivity (intrinsic and radiation induced [instantaneous or delayed]). These data are needed by the community to perform charging predictions for assigned missions. This study was divided into two overall main tasks: the first task was...
Dr
Benoit Thiebault
(Artenum), Dr
Jean-Charles Mateo-Velez
(ONERA)
06/12/2013, 10:50
The Spacecraft Plasma Inteaction Software (SPIS) has recently undergone a major update. Through two ESA contracts, the ability of users to model hazardous charging levels in a geostationary orbit and the ability to simulate the detailed interactions of plasma with scientific satellites was developed. This produced new and improved capabilities and a completely new user interface.
Dr
Daniel Heynderickx
(DH Consultancy BVBA)
06/12/2013, 13:40
Gaps in existing radiation environment and effects standards adversely affect human spaceflight developments. In the framework of the ESA project IPRAM (Interplanetary and Planetary RadiationModel for Human Spaceflight, ESA Contract No 4000106133/12/NL/AF), we investigated the most important drivers in the domain of interplanetary and planetary radiation environments, identifying appropriate...
Dr
Pete Truscott
(Kallisto Consultancy Ltd)
06/12/2013, 14:25
The Jovian radiation environment presents a severe threat to spacecraft operation due to the large magnetic field of Jupiter allowing it to stably trap charged particles, especially electrons, at higher energies and over greater distances than found in Earth’s Van Allen belts. As part of the ESA Laplace mission, an assessment is ongoing into the different hardening and alternative radiation...
Dr
Daniel Heynderickx
(DH Consultancy BVBA)
06/12/2013, 14:50
Dr
Fan Lei
(RadMod Research)
06/12/2013, 15:50
Dictat has become a commonly used tool for internal charging assessment. To support JUICE analysis, an updated version was released which could be applied over a wider energy range and included high-Z materials. Because this involved a significant evolution from the earlier versions of the code a validation excercise was carried out.
Dictatv4 was compared to experimental data and to other...
Dr
Daniel Heynderickx
(DH Consultancy BVBA)
06/12/2013, 16:50
Since the beginning of the space age, considerable effort was invested in building models of the trapped proton and electron populations, culminating in the NASA AP-8 and AE-8 models which have been the de facto standards since the seventies. In the intervening years, there have been several new models created, but none with the coverage in energy or space provided by these original models....
