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10-12 April 2017
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Contribution List

Displaying 39 contributions out of 39
Past and current pair gamma-ray space telescopes use tungsten converters interleaved with tracker layers, for which the contribution of multiple scattering of the pair electrons in the tungsten dominates the single-photon angular resolution (example the Fermi LAT) and polarimetry with pairs has never been performed by a space polarimeter. All-silicon telescopes could provide an angular resolut ... More
Presented by Dr. Denis BERNARD on 11 Apr 2017 at 14:05
AREMBES (ATHENA Radiation Environment Models and X-Ray Background Effects Simulators) is the new ESA software simulator designed for the ATHENA mission. It is created within the CIRSOS simulation framework to fully address the radiation background issues encountered by Athena and to be adaptable to other future X-ray missions. Within this framework the correct and precise simulation of all relev ... More
Presented by Dr. Paolo DONDERO on 12 Apr 2017 at 09:30
AREMBES (Athena Radiation Environment Models and x-ray Background Effects Simulator) is an ESA contract that foresees the development of a software simulator based on Geant4, capable of addressing all the background issues that the ATHENA mission will experience during its lifetime, together with the development of improved environment models for the L2 halo orbit radiation. The project, that has ... More
Presented by Dr. Simone LOTTI on 10 Apr 2017 at 15:40
The increasing complexity of future commercial missions and space environments of new scientific missions impact more aggressively and deeply the design of next generation space systems, payloads as well as the platforms. The use of COTS components and the mass optimization require a finer modeling of the impact of space environment on spacecraft, especially regarding radiation and internal chargi ... More
Presented by Mr. Benjamin RUARD on 12 Apr 2017 at 09:55
MRED (Monte Carlo Radiative Energy Deposition) is Vanderbilt University’s Geant4 application for simulating radiation events in semiconductors. Geant4 is comprised of the best available computational physics models for the transport of radiation through matter. Geant4 is a library of c++ routines for describing radiation interaction with matter assembled by a large and diverse international coll ... More
Presented by Dr. Robert REED on 10 Apr 2017 at 14:05
Device reliability is critical to the integrity of electronics systems used in the aerospace industry (e.g. satellites, cubesats, spacecrafts, etc.). In particular, R&D in device reliability is indispensable for electronics operating in harsh environments, such as in Low Earth Orbit (LEO), where particle radiation is prevalent. In particular, radiation-induced degradation at metal-semiconductor (M ... More
Presented by Ricardo PETERSON on 10 Apr 2017 at 14:30
Session: Software tools
CIRSOS is an integrated modelling environment (IME) for radiation effects analysis in space mission developments. It provides a complete set of models and tools required for a mission radiation effects analysis at different phases of its developments from conception to operation. It was initially developed in support of the ESA Cosmic Version programme, the JUICE mission in particular. It will als ... More
Presented by Dr. Fan LEI on 11 Apr 2017 at 16:05
Presented by Dr. Giovanni SANTIN on 10 Apr 2017 at 10:00
Session: Software tools
Space radiation detectors could be rather complex, due to their specific geometries and materials. In addition, the need of trustful physics analysis and/or accurate detector response simulation taking into account all sources of secondary particles resulting from the interaction of primary particles with the detector materials, drives the need of a detailed detector geometry implementation. The ... More
Presented by Mr. Marco PINTO on 11 Apr 2017 at 16:30
The modelling of X-ray micropore optics have raised a considerable interest, in the framework of some recent and future missions like BepiColombo or the next X-ray observatory ATHENA, in order to not only help during design phases but also provide a precise knowledge of the low-energy particle focusing on the focal plane detectors. As a first step, we have fully simulated the BepiColombo MIXS ... More
Presented by Mr. Pablo PORTILLO on 10 Apr 2017 at 17:20
The special degraders are used to achieve required heavy ion’s characteristics at the only in Russia SEE test facilities based on high-energy ion sources. Heavy ion’s characteristics (an energy, a linear energy transfer, a range) at electronic components’ sensitive volume are calculated using different software, including GEANT4. Examples of GEANT4 and analogue software calculations results ... More
Presented by Dr. Grigory PROTOPOPOV on 10 Apr 2017 at 13:40
Presented by Prof. Vladimir IVANTCHENKO on 11 Apr 2017 at 11:00
Presented by Dr. John ALLISON on 11 Apr 2017 at 11:50
Geant4 is a vital tool for understanding and calibrating the response of space-borne radiation sensors at The Aerospace Corporation, and for understanding the space radiation environment that they measure. In the year and a half since the last Geant4 Space Users’ Workshop, we have used the code to continue to refine our understanding of the response, both foreground and background, of sensors a ... More
Presented by Dr. Mark LOOPER on 12 Apr 2017 at 11:55
Presented by Dr. Dennis WRIGHT on 11 Apr 2017 at 11:25
Presented by Prof. Zhenlong ZHANG on 10 Apr 2017 at 11:50
Session: Software tools
For some time now, various Geant4 applications have been employed for the planning of space and planetary exploration missions and the significance of such tools has been also reflected in the evolution of the web-based ESA Space Environment Information System (SPENVIS, www.spenvis.oma.be). SPENVIS has been providing interfaces to various Geant4-based tools that can be used for a number of applica ... More
Presented by Dr. Neophytos MESSIOS on 11 Apr 2017 at 15:40
Orbital soft protons with energies from tens of keV to a few MeV can seriously degrade solid-state detectors in X-ray observatories. In order to improve and validate Geant4 simulations of soft proton grazing angle scattering in Wolter-type optics and to get a handle on the physical processes at work, measurements with eROSITA gold coated mirror samples have been performed at the accelerator facili ... More
Presented by Ms. Sarah HANSCHKE on 11 Apr 2017 at 14:30
Despite the shielding of the spacecraft payloads, the internal charging events are resulting from the high energy electrons accumulation inside thick dielectrics. On long time scales, this can create IESD (internal electrostatic discharges). This internal charging phenomenon, potentially leading to part or system failure, is well known to spacecraft designers and requires efficient shielding to pr ... More
Presented by Mr. Pierre SARRAILH on 12 Apr 2017 at 11:05
Presented by Mr. keith RYDEN on 10 Apr 2017 at 09:40
Presented by Dr. Masanobu OZAKI on 10 Apr 2017 at 11:20
Low energy protons (< 300 keV) can enter the field of view of X-ray space telescopes, scatter at small incident angles, and deposit energy on the detector. This phenomenon can cause intense background flares at the focal plane decreasing the mission observing time (e.g. the XMM-Newton mission) or in the most extreme cases, damaging the X-ray detector. Among the many physical processes that have be ... More
Presented by Dr. Valentina FIORETTI on 11 Apr 2017 at 14:55
Session: Software tools
Modern electronic systems can be disrupted or damaged by high energy particles. Radiation effects have become a critical reliability issue in nanometer-scaled logic devices, particularly for aviation applications or space environments, and now increasingly for safety critical ground-level applications such as transportation and medicine. In the industrial development process of such devices the ra ... More
Presented by Mr. Oskar BAUMGARTNER on 11 Apr 2017 at 16:55
Presented by Dr. Insoo JUN on 10 Apr 2017 at 10:50
The space elevator is a means for moving large amounts of mass into space at relatively low cost. Modern concepts of this structure involve a gravitationally stabilized thin tether made of strong materials such as carbon nanotubes, extending to an altitude of 100,000 km. Along the full length of the tether many hazards, such as space debris, solar storms, radiation damage on tether materials and ... More
Presented by Dr. Dennis WRIGHT on 12 Apr 2017 at 12:20
on 11 Apr 2017 at 12:10
During the passed year a detailed Geant4 physics validation review and new verification studies were performed within the ESA AREMBES project. Several electromagnetic and hadronic models were addressed, focusing in particular on the space related physics. The low energy proton and electron scattering was considered, comparing the condensed history algorithms with respect to the single scattering a ... More
Presented by Dr. Paolo DONDERO on 11 Apr 2017 at 13:40
Einstein Probe (EP) is a proposed small scientific satellite dedicated to time-domain astrophysics working in the soft X-ray band. It will discover transients and monitor variable objects in 0.5-4 keV, for which it will employ a very large instantaneous field-of-view (60o × 60o). Gravitational Waves will be its one of the important objectives. EP has two kinds of payloads including a Wide-field X ... More
Presented by Dr. DONGHUA ZHAO on 10 Apr 2017 at 16:55
Single scattering classes G4eSingleCoulombScatteringModel and G4IonCoulombScatteringModel, included in Geant4, implement the screened-relativistic treatment for protons, ions and electrons incident on nuclei. This treatment accounts for effects due to the screened Coulomb fields, finite sizes and rest masses of nuclei. For electrons scattering on nuclei a complete treatment of Mott differential c ... More
Presented by Dr. Mauro TACCONI on 10 Apr 2017 at 14:55
To estimate the influence of radiation environment, performance of critical detectors and radiation damage, event by event simulation methods are necessary for space-based telescope development. In this presentation an outline of space-based mission in IHEP is given, which emphasize on the Geant4 analysis performed in support of the performance estimate, detector responses, shielding optimize etc. ... More
Presented by Dr. Juan ZHANG, Dr. Gang LI on 10 Apr 2017 at 16:05
Proton beam irradiation on a cryostat can induce device activation that causes radio protection issues and cryostat transportation delay. The aim of this study, funded by CNES, was to predict the behaviour of a cryostat during and after irradiation using a chain of software tools: - FASTRAD for cryostat modelling and import to GEANT4, - GEANT4 for dose and transmitted spectra calculation in di ... More
Presented by Mr. Pierre POURROUQUET on 12 Apr 2017 at 11:30
The accuracy of Monte Carlo simulations in reproducing the scientific performance of space telescopes (e.g. angular resolution) is mandatory for a correct design of the mission. This is particularly the case of gamma-ray Compton and pair production trackers, where the reconstruction of the primary photon energy and direction requires the full physical understanding of the particle tracks. A br ... More
Presented by Dr. Valentina FIORETTI on 10 Apr 2017 at 16:30
ATHENA (Advanced Telescope for High Energy Astrophysics) is the second large mission in ESA Cosmic Vision 2015-2025, with a launch foreseen in 2028 towards the L2 orbit. The mission addresses the science theme “The Hot and Energetic Universe”, by coupling a high-performance X-ray Telescope with two complementary focal-plane instruments. One of these, the X-ray Integral Field Unit (X-IFU) is a ... More
Presented by Dr. Simone LOTTI on 12 Apr 2017 at 10:20
Presented by Dr. Pete TRUSCOTT on 10 Apr 2017 at 09:30