Dr
Mark Anderson
(Executive Chief Engineer, Boeing Research and Technology)
18/08/2010, 09:00
Prof.
Reed Robert
(Vanderbilt University)
18/08/2010, 09:30
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...
Dr
Masanobu Ozaki
(JAXA)
18/08/2010, 10:00
Dr
Giovanni Santin
(ESA/ESTEC)
18/08/2010, 11:00
The European Space Agency (ESA) is currently supporting a number of R&D projects where the Geant4 software is either used or further developed. These include activities for radiobiology in the human spaceflight and exploration context; electron radiation effects and analysis software for Navigation constellation orbits; radiation effects analysis framework development for ESA Cosmic Vision...
Mr
Sergio Ibarmia Huete
(INTA)
18/08/2010, 11:30
Ms
Valentina Fioretti
(INAF/IASF - Bologna)
18/08/2010, 12:00
The X-ray background minimization is a science-driven necessity in order to reach deep sensitivity levels, which is one of the key scientific requirements for the New Hard X-ray Mission. As a first, fundamental step in the background evaluation, we developed a Geant4-based simulator that allows to evaluate the impact of the Low Earth Orbit radiation environment on the prompt background count...
18/08/2010, 12:20
Dr
Mark Looper
(The Aerospace Corporation)
18/08/2010, 14:00
The Cosmic Ray Telescope for the Effects of Radiation (CRaTER) has been in orbit around the moon aboard NASA's Lunar Reconnaissance Orbiter (LRO) for over a year. The purpose of CRaTER is to measure the radiation environment that will be experienced, in particular, by astronauts on and near the lunar surface; to that end, CRaTER consists of a stack of six silicon solid state detectors...
Dr
Francisco Garcia
(Helsinki Institute of Physics)
18/08/2010, 14:20
BepiColombo is European Space Agency’s (ESA) mission to Mercury. It has been named after the Italian mathematician and engineer Giuseppe (Bepi) Colombo, known especially for his works on Mercury. The spacecraft will set off in 2013 on a journey lasting about six years.
One of the scientific instruments onboard the mission will be SIXS, Solar Intensity X-ray and particle Spectrometer. It is...
Mr
Edward Mitchell
(Imperial College)
18/08/2010, 14:40
The highly miniaturised radiation monitor (HMRM) is a simple particle detector being developed for wide application on satellites in a broad range of orbits. The HMRM is a collaborative effort between the STFC Rutherford Appleton Laboratory and Imperial College London, aimed at addressing ESA’s radiation monitoring strategy in the category of small, versatile, devices intended for alert and...
Dr
SEBASTIEN INCERTI
(CNRS/IN2P3)
18/08/2010, 15:00
The European Space Agency is supporting the extension of the Geant4 general purpose Monte Carlo simulation toolkit for the modeling of biological effects of radiation at the DNA and cellular scales for space applications, in the framework of the ESA AO6041 project. In this talk, we will describe the context of this research project and overview on-going developments. These developments include...
Mr
Sergio Ibarmia Huete
(INTA)
18/08/2010, 16:00
G4MRES (Geant4 for Mission Radiation Effects Simulation), developed under the framework of SEISOP (Space Environment Information System for Operations) project, is designed, as an advanced tool, to cover the lack of data linking the Space Weather conditions and the direct effects on S/C sensitive components.
The final objective of G4MRES is the design of an operational tool capable to...
Prof.
Zi-Wei Lin
(East Carolina University)
18/08/2010, 16:20
We have calculated how the radiation environment in a habitat on the surface of the Moon depends on the thickness of a habitat in the 1977 galactic cosmic-ray environment. Geant4.9.1 was used, and a hemispherical dome made of lunar regolith was used to simulate the lunar habitat. We have investigated the effective dose from both primary and secondary particles. The total effective dose showed...
Dr
Philip von Doetinchem
(UC Berkeley, Space Sciences Laboratory)
18/08/2010, 16:40
The GAPS experiment is foreseen to carry out a dark matter search using low energy cosmic ray antideuterons (< 0.3GeV/n) at stratospheric altitudes using a novel detection approach. The theoretically predicted antideuteron flux resulting from secondary interactions of primary cosmic rays, e.g. protons, with the interstellar medium is very low. So far not a single cosmic antideuteron has been...
Dr
SEBASTIEN INCERTI
(CNRS/IN2P3)
18/08/2010, 17:00
A few commercial airlines now operate ultra-long-haul flights from Asia to America. Recent concerns have been raised related to the dose exposure of crews on these high latitude routes which fly close to the North Pole. We present in this talk a proposal to model with Geant4 the radiation environment encountered in such ultra-long-haul flights. This includes the modeling of the interaction of...
Hauf Steffen
(TU Darmstadt, Darmstadt)
18/08/2010, 17:20
The International X-ray Observatory (IXO) is a planned high sensity
next-generation X-ray telescope, jointly built by ESA, NASA and JAXA,
which is projected to be launched in the 2020 timeframe. The main
scientific goals of IXO include the study of AGN, the
diffuse x-ray background as well as accretion discs around black holes and
neutron stars which will aid the understanding of cosmic...
Makoto ASAI
(SLAC)
19/08/2010, 09:00
We introduce new features offered in Geant4 version 9.3 and also foreseen new features in version 9.4. This is a general overview which mainly covers functionality which won't be detailed in the following Geant4 developer talks. Also, perspective view of future Geant4 will be discussed.
Norman Graf
(SLAC)
19/08/2010, 09:30
We present an update on the status of the Geant4 Geometry system as currently implemented in version 9.3 and current plans for features to become available in the next release.
Dr
SEBASTIEN INCERTI
(CNRS/IN2P3)
19/08/2010, 10:00
In this talk, the "standard" and the "low energy" electromagnetic Physics working groups of the Geant4 collaboration will present an overview of recent electromagnetic Physics developments.
Dr
Michael Kelsey
(SLAC National Accelerator Laboratory)
19/08/2010, 11:30
Starting in January 2010, substantial modifications have been made to the Bertini Cascade code. Primarily internal software updates and class refactoring, the changes include improvements to the internal physics processes (cross sections, final states, and angular distributions, respect for conservation laws, and a dramatic reduction in the memory "churn" attributed to the Bertini cascade. ...
Dr
Tatsumi Koi
(SLAC National Accelerator Laboratory)
19/08/2010, 11:50
Radiation environment in a spacecraft is very complicated. A variety of high energy nucleus exists in cosmic rays. Some of them interacts with nucleus in the spacecraft and produces many secondary particles including neutrons. Therefore both nucleus-nucleus and neutron-nucleus interactions are important for the assessment of radiational damage of the devices flown on a spacecraft. Recent...
Dr
Giovanni Santin
(ESTEC), Dr
Makoto Asai
(SLAC), Dr
Petteri Nieminen
(ESTEC)
19/08/2010, 12:10
The Monte Carlo (MC) method is very accurate for simulating the
interaction of radiations with complex
geometries. However MC simulations need most of the time a lot of
computing power
before reaching the expected precision of the simulation results.
This represents an important drawbacks of the RMC method when it is
used in engineering tool, as for example Spenvis,
where the...
Dr
Insoo Jun
(JPL)
19/08/2010, 14:00
Mr
Shawn Kang
(Jet Propulsion Laboratory)
19/08/2010, 14:20
The Europa Jupiter System Mission (EJSM) would consist of two primary flight elements operating in the Jovian system: the NASA-led Jupiter Europa Orbiter (JEO) and the ESA-led Jupiter Ganymede Orbiter (JGO). JEO and JGO would execute a choreographed exploration of the Jupiter System before settling into orbit around Europa and Ganymede, respectively. The JEO concept is designed to follow-up...
Danielle Hohreiter
(Jet Propulsion Lab - California Institute of Technology)
19/08/2010, 14:40
The Dynamitron is a ~MeV electron beam accelerator at the Jet Propulsion Laboratory. A calibration of the machine was required after a retrofitting. Simulations using Geant4, detailing the electron particle accelerator, have been performed. Geant4 was used to determine beam uniformity and energy distribution at the target plate after passing through various scattering foils made of...
Mr
Ercan Pilicer
(INFN Perugia)
19/08/2010, 15:00
The aim of this work is to qualify and characterize beam of an electron LINAC of St. Maria Hospital which is located in Terni, Italy. The facility, of which its primary use is radiotherapy, will be used to test the performance of detector systems in particular those designed to operate in space (i.e. for European Space Agency based projects). The critical beam parameters are electron energy,...
Dr
Daniel Brandt
(SLAC National Accelerator Laboratory)
19/08/2010, 16:00
We present preliminary results of a research and development effort to implement low temperature, quasidiffusive phonon transport in Geant4. In its current implementation the phonon transport code presented is capable of propagating ballistic phonons of Longitudinal (L), Slow Transverse(ST) and Fast Transverse (FT) polarization states. We present an overview of the physics processes under...
Brian Sierawski
(Vanderbilt University ISDE)
19/08/2010, 16:20
Vanderbilt University is rolling out a new website, http://creme.isde.vanderbilt.edu, which provides access to an array of tools for modeling radiation-induced energy deposition in semiconductors. The site provides access to the creme86 and creme96 models, having taken over creme96 from the NRL website, which has been retired. The site so provides access to a new tool, creme-mc, which is a...
Dr
Marcus Mendenhall
(Vanderbilt University EECS/ISDE)
19/08/2010, 16:40
Demonstrated CREME-MC Web page is here.
B. Charles Rasco
(Smarter Than You Software, JIHIR, ORNL)
20/08/2010, 09:00
Various approaches to organizing different geometries for efficient calculations will be discussed. Implementation details include ways to organize a large hierarchy of voxels in a binary tree like organization and simple placement rules of various logical volumes inside a mother logical volume. Specific results emphasize optical photon tracking, but the results are applicable to other...
Mr
Ashok Raman
(CFD Research Corporation (CFDRC))
20/08/2010, 09:40
Scientific evidence increasingly indicates that using an average approach (e.g. Linear Energy Transfer or LET) to approximate the energy deposition process due to a radiation event such as a heavy ion strike, is inadequate and/or erroneous. It is important to capture the complex microstructure of the energy deposition, and consequent charged species generation profile, to accurately model the...