# SERESSA International School 12-16 Nov. 2018

12-16 November 2018
ESA/ESTEC
Europe/Amsterdam timezone

## The SpacePix radiation monitor (SXRM)

Not scheduled
1h
Newton 1-2 (ESA/ESTEC)

### Newton 1-2

#### ESA/ESTEC

Keplerlaan 1, 2200 AG Noordwijk The Netherlands
Poster Tests and simulations

### Speaker

Matěj Vaculčiak (Czech Technical University)

### Description

The SXRM is a concept of a multilayer cosmic radiation detector currently being developed at the FNSPE, CTU in Prague.
Its main objective is a determination of the incoming particles species, estimation of their energy using pattern recognition techniques and trajectories reconstruction.
The geometric layout is designed to be compact with dimensions of \mbox{$5 \times 5 \times 4.2$ cm$^3$} and mass less than 50 g. The setup power consumption is estimated to be less than 1.2 W.

The SpacePix ASIC, a radiation tolerant monolithic pixel detector, is used as an active element. It is designed in a 180 nm SoI technology with a 60 $\mu$m pixel pitch.

The pixels contain a logarithmic amplifier, which provides a wide dynamic range of deposited charge from 2 ke$^-$ up to 10 Me$^-$.
In order to sample the energy deposition curve, several layers of the SpacePix ASIC are used in a telescope configuration, interleaved with absorber layers.

The presented work primarily concerns the simulations performed during the research and development phase. For these purposes, models of both SpacePix ASIC and SXRM were created in Geant4 and AllpixSquared packages, focusing on simulation of radiation-through-matter passage. Obtained results are being used for further development of the detection system.

The primary deployment area of the SXRM is intended to be the low Earth orbit. After successful testing and design improvements, it could be used beyond the aforementioned orbit in the Solar System.

### Primary author

Matěj Vaculčiak (Czech Technical University)

### Co-authors

Dr Michal Marčišovský (Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague) Dr Miroslav Havránek (Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague) Mária Marčišovská (Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague) Peter Švihra (Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague) Petr Suchanek (esc Aerospace) TOMAS BENKA (FNSPE CTU in Prague) Dr Václav Vrba (Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague)