TY  - CONF
AU  - Magalhaes Suarez, Debora
AU  - Hirsemann, Helmut
AU  - Klujev, Alexander
AU  - Konopkova, Zuzana
AU  - Lange, Sabine
AU  - Laurus, Torsten
AU  - Niemann, Magdalena
AU  - Palutke, Steffen
AU  - Pennicard, David
AU  - Ramilli, Marco
AU  - Rovensky, Vratko
AU  - Strohm, Cornelius
AU  - Sztuk-Dambietz, Jolanta
AU  - Trunk, Ulrich
AU  - Veale, Matthew
AU  - Wilson, Matthew
AU  - Graafsma, Heinz
TI  - High-Z sensors at MHz repetition rate FELs: first AGIPD results
JO  - Journal of Instrumentation
VL  - 21
IS  - 01
SN  - 1748-0221
CY  - London
PB  - Inst. of Physics
M1  - PUBDB-2025-04152
SP  - C01019
PY  - 2025
AB  - To address new applications in the 20–30 keV photon energy range at the European XFEL, where silicon sensors lose quantum efficiency, the AGIPD consortia has developed anAGIPD detector prototype with high-Z sensor materials. An electron-collecting version of the chip (ecAGIPD) was designed to leverage from the higher mobility and longer lifetime of electrons with respect to holes in the candidate materials: chromium-doped gallium arsenide (GaAs:Cr) and high-flux cadmium zinc telluride (CdZnTe). This work reports on the characterization of GaAs and high-flux CdZnTe ecAGIPD prototypes at the HED instrument at the European XFEL. Their time response, linearity and performance at 2.2 and 4.5 MHz frame rates were evaluated. Preliminary results demonstrate good linearity of both materials up to 1.6e+03 15 keV photons/mm2/pulse, and a residual after-pulse signal corresponding to less than one photon on CdZnTe, up to an estimated flux of 1.2e+05 24 keV photons/mm2/pulse.
T2  - International Workshop on Radiation Imaging Detectors
CY  - 6 Jul 2025 - 10 Jul 2025, Bratislava (Slovakia)
Y2  - 6 Jul 2025 - 10 Jul 2025
M2  - Bratislava, Slovakia
LB  - PUB:(DE-HGF)16 ; PUB:(DE-HGF)8
DO  - DOI:10.1088/1748-0221/21/01/C01019
UR  - https://bib-pubdb1.desy.de/record/638687
ER  -