Software tool for on-line reconstruction of coincident tracks of secondary electrons

AbstraktAbstract

The "Track analysis" software processes stream of image data captured by Timepix detector inside of the system for particle tracking using secondary electrons. An ionizing particle penetrating a thin metallic foil recoils several secondary electrons. These electrons are accelerated by electric field towards the Timepix detector which records their positions and time of arrival (energy is known) in the image. The image can contain several or many of such events. The software receives these frames and performs their on-line processing. It firstly identifies the electron tracks with proper shapes, then it sorts them to spatially and temporally distinguished groups of coincident tracks. Each group represents single primary particle. Finally it calculates several measures for each group such as size, spread, direction, apart points etc. These measures are used for image reconstruction. For some particles (protons, alphas) the flight direction is determined in such case the full 3D image of radiation field is created. The software tool "Track analysis" is integrated into Pixelman (TM) environment.

The "Track analysis" software processes stream of image data captured by Timepix detector inside of the system for particle tracking using secondary electrons. An ionizing particle penetrating a thin metallic foil recoils several secondary electrons. These electrons are accelerated by electric field towards the Timepix detector which records their positions and time of arrival (energy is known) in the image. The image can contain several or many of such events. The software receives these frames and performs their on-line processing. It firstly identifies the electron tracks with proper shapes, then it sorts them to spatially and temporally distinguished groups of coincident tracks. Each group represents single primary particle. Finally it calculates several measures for each group such as size, spread, direction, apart points etc. These measures are used for image reconstruction. For some particles (protons, alphas) the flight direction is determined in such case the full 3D image of radiation field is created. The software tool "Track analysis" is integrated into Pixelman (TM) environment.