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@ARTICLE{Gruber:614121,
author = {Gruber, Markus and Desch, Klaus and Kaminski, Jochen and
Richarz, Leonie},
title = {{D}evelopment of a {G}rid{P}ix {X}-ray polarimeter},
journal = {Journal of physics / Conference Series},
volume = {2374},
number = {1},
issn = {1742-6588},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {PUBDB-2024-05755},
pages = {012148},
year = {2022},
abstract = {In gaseous detectors it is possible to determine the
polarization of an X-ray beam by tracking photoelectrons
which are created in photoelectric interactions of the
photons with the gas molecules. Based on the differential
cross section of this interaction the emission angle of the
photoelectrons is correlated with the polarization plane of
the beam.Depending on the photon energy and on scattering of
the photoelectrons on gas molecules the length of the
relevant part of the track is only in the order of a few
hundred microns. Thus, a high tracking resolution is needed.
This is achieved with the GridPix [1] - a combination of the
highly granular Timepix pixel ASIC [2] and a
photolithographically postprocessed MicroMegas called InGrid
which holes are aligned with the pixels of the ASIC.Such a
detector was operated in a testbeam at the P09 beamline [3]
of PETRA III with a $99\%$ linear polarized beam and a
modulation factor of $77\%$ was measured. Furthermore, tests
of different gas pressures and different beam energies were
performed.},
cin = {DOOR ; HAS-User},
ddc = {530},
cid = {I:(DE-H253)HAS-User-20120731},
pnm = {6G3 - PETRA III (DESY) (POF4-6G3) / FS-Proposal: I-20200649
(I-20200649)},
pid = {G:(DE-HGF)POF4-6G3 / G:(DE-H253)I-20200649},
experiment = {EXP:(DE-H253)P-P09-20150101},
typ = {PUB:(DE-HGF)16},
doi = {10.1088/1742-6596/2374/1/012148},
url = {https://bib-pubdb1.desy.de/record/614121},
}