Framework for a Geant4-based simulator of the radiation background and detector responses of the space X-ray observatory Suzaku (Astro-E2)

Abstract

We have constructed a Monte Carlo simulation base for the radiation environment of the Suzaku X-ray observatory satellite. The system consists of an object-oriented analysis framework used for real-data analysis, the Geant4 toolkit, an interface that allows the users a transparent usage of Geant4 components through the framework and classes that are used to build the simulation by a collaboration among different geometry maintainer and detector developer groups. As a demonstration, the geometry of the Hard X-ray Detector, which is one of the Suzaku detectors, is constructed using the framework and a comparison between the simulation output with the actual data is shown.

Monte Carlo Simulator and Ancillary Response Generator of Suzaku XRT/XIS System for Spatially Extended Source Analysis

“…a generalized version of the ASCA ANL, as the software development platform for ASTRO-E and Suzaku. A brief history and concept of the ANL are described in Ozaki et al (2006). At the same time, we developed a mechanism to convert ANL software directly to Ftools, to ensure that the ANL tools used for calibration by instrument teams are equivalent to Ftools used for pipeline processing and scientific data analysis.…”

“…We also note that there is another Monte Carlo simulator for Suzaku, based on the Geant4 toolkit (Geant4 Collaboration et al 2003) with ANL++ (Ozaki et al 2006). This can simulate interactions of cosmic rays (both X/γ-rays and particles) with the satellite materials, such as satellite structures, shielding around detectors, and the detectors themselves.…”

Estimation of energy range measurements with newly developed Si/CdTe Compton camera for nuclear medicine imaging

“…The Compton camera simulation code developed in JAXA was used. The simulation was based on an ANL PLUS simulation base [14] and the Geant4 toolkit [15]. In the simulation, the detector size was set to be identical to that of the newly developed Compton camera, and the distance between the gamma-ray source and Si-DSD was set to 100 mm.…”

Geant4 Applications in Space

“…Geant4 [1,2] is widely and commonly used for various current and future science missions including XMM-Newton [3], GLAST [4], LISA and LISA Pathfinder [5], RHESSI [6], ACE [7], JWST [8], INTEGRAL [9], Bepi Colombo [10], Messenger [11], Herschel [12], Cassini and Huygens [13], Astro-E2 [14], ConeXpress [15], SELENE [16], SWIFT [17] and modules of ISS (International Space Station) including Columbus [18], AMS [19] and MAXI [20]. In the following sections, I will overview how Geant4 is used for some of these missions.…”

“…LEMMS has 11 different detectors. These detectors and collimators are modeled in Geant4 and studied as shown in Fig.2 [14]. …”