Speaker
Jochen Kaminski
(Universitaet Bonn (DE))
Description
The GridPix detectors are an interesting new technology which combine a highly
granular readout structure implemented by the pixelized Timepix ASIC with a
Micromegas mesh. The mesh is produced by photolithographic processing
techniques and each mesh hole is aligned with one readout pixel. This allows for
detecting single primary electrons with high detection efficiency. Both energy
and spatial resolution profit from resolving the structure of tracks or X-ray
conversions.
We have developed a wafer-based production of GridPix detectors and a
scalable readout system allowing the construction and simultaneous operation
of a large number of GridPixes in a complete experimental setup. Several
application will be presented: A test beam
with a large volume TPC at DESY has demonstrated the smooth operation of 160
GridPix detectors recording tracks of up to 50 cm length. Another application
which will be covered in this presentation is the good X-ray energy
resolution of about 3.85 %, which is important for low-rate experiments such
as solar axion searches. Finally also tests of a GridPix based transition
radiation detector in a magnetic field will be presented.
Primary author
Jochen Kaminski
(Universitaet Bonn (DE))
Co-authors
Christoph Krieger
(Universitaet Bonn (DE))
Klaus Desch
(Universitaet Bonn (DE))
Michael Lupberger
(University of Bonn)
Yevgen Bilevych
(University of Bonn)
