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Author  |
Pilsl, B.; Bergauer, T.; Casanova, R.; Handerkas, H.; Irmler, C.; Kraemer, U.; Marco-Hernandez, R.; Mazorra de Cos, J.; Palomo, F.R.; Portschy, S.; Powell, S.; Sieberer, P.; Sonneveld, J.; Steininger, H.; Vilella, E.; Wade, B.; Zhang, C.; Zhang, S. |
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Title |
Enhancing radiation hardness and granularity in HV-CMOS: The RD50-MPW4 sensor |
Type |
Journal Article |
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Year |
2025 |
Publication |
Nuclear Instruments & Methods in Physics Research A |
Abbreviated Journal |
Nucl. Instrum. Methods Phys. Res. A |
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Volume |
1080 |
Issue |
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Pages |
170752 - 5pp |
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Keywords |
RD50-MPW; HV-CMOS; DMAPS; CERN-RD50; Radiation damage |
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Abstract |
The latest HV-CMOS pixel sensor developed by the former CERN-RD50-CMOS group, known as the RD50-MPW4, demonstrates competitive radiation tolerance, spatial granularity, and timing resolution – requirements for future high-energy physics experiments such as the HL-LHC and FCC. Fabricated using 150 nm CMOS process by LFoundry, it introduces several improvements over its predecessor, the RD50-MPW3, including separated power domains for reduced noise, a new backside biasing scheme, and an enhanced guard ring structure, enabling operation at bias voltages up to 800 V. Tests with non-irradiated samples achieved hit detection efficiencies exceeding 99.9 % and a spatial resolution around 16 μm. Neutron-irradiated sensors were characterized using IV measurements and beam campaigns, confirming the sensor's robustness in high-radiation environments. The results highlight ability of HV-CMOS technology to restore hit detection efficiency post-irradiation by increasing the applied bias voltage. Details of these measurements and timing performance are presented in this paper. |
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Address |
[Pilsl, B.; Bergauer, T.; Handerkas, H.; Irmler, C.; Sieberer, P.; Steininger, H.] Austrian Acad Sci, Inst High Energy Phys, Nikolsdorfergasse 18, A-1050 Vienna, Austria, Email: Bernhard.Pilsl@oeaw.ac.at |
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Publisher |
Elsevier |
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Language |
English |
Summary Language |
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Original Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0168-9002 |
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Notes |
WOS:001523757300003 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6739 |
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