Conveners
Physics models and validations
- Robert Reed (Vanderbilt University)
Dr
Paolo Dondero
(SWHARD SRL)
11/04/2017, 13:40
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...
Dr
Denis Bernard
(LLR, CNRS/IN2P3)
11/04/2017, 14:05
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...
Ms
Sarah Hanschke
(IAAT / University of Tuebingen)
11/04/2017, 14:30
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...
Dr
Valentina Fioretti
(INAF/IASF Bologna)
11/04/2017, 14:55
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...
