Detection efficiency and spatial resolution of Monolithic Active Pixel Sensors bent to different radii

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Bibliographic Details
Main Authors:	Andronic, Anton, Becht, Pascal, Blidaru, Mihail Bogdan, Bruno, Giuseppe Eugenio, Carnesecchi, Francesca, Chizzali, Emma, Colella, Domenico, Colocci, Manuel, Contin, Giacomo, Fabbietti, Laura, Gernhäuser, Roman, Hillemanns, Hartmut, Jacazio, Nicolo, Kalweit, Alexander Philipp, Kluge, Alex, Kotliarov, Artem, Křížek, Filip, Lautner, Lukas, Mager, Magnus, Martinengo, Paolo, Masciocchi, Silvia, Menzel, Marius Wilm, Mulliri, Alice, Reidt, Felix, Ricci, Riccardo, Russo, Roberto, Schledewitz, David, Scioli, Gilda, Senyukov, Serhiy, Siddhanta, Sabyasachi, Sonneveld, Jory, Stachel, Johanna, Šuljić, Miljenko, Tiltmann, Nicolas, Ramos, Arianna Grisel Torres, Ulukutlu, Berkin, Usai, Gianluca, Van Beelen, Jacob Bastiaan, Wu, Yitao, Yüncü, Alperen
Format:	Preprint
Published:	2025
Subjects:	Instrumentation and Detectors
Online Access:	Acceder al recurso
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_version_	1866910818672574464
author	Andronic, Anton Becht, Pascal Blidaru, Mihail Bogdan Bruno, Giuseppe Eugenio Carnesecchi, Francesca Chizzali, Emma Colella, Domenico Colocci, Manuel Contin, Giacomo Fabbietti, Laura Gernhäuser, Roman Hillemanns, Hartmut Jacazio, Nicolo Kalweit, Alexander Philipp Kluge, Alex Kotliarov, Artem Křížek, Filip Lautner, Lukas Mager, Magnus Martinengo, Paolo Masciocchi, Silvia Menzel, Marius Wilm Mulliri, Alice Reidt, Felix Ricci, Riccardo Russo, Roberto Schledewitz, David Scioli, Gilda Senyukov, Serhiy Siddhanta, Sabyasachi Sonneveld, Jory Stachel, Johanna Šuljić, Miljenko Tiltmann, Nicolas Ramos, Arianna Grisel Torres Ulukutlu, Berkin Usai, Gianluca Van Beelen, Jacob Bastiaan Wu, Yitao Yüncü, Alperen
author_facet	Andronic, Anton Becht, Pascal Blidaru, Mihail Bogdan Bruno, Giuseppe Eugenio Carnesecchi, Francesca Chizzali, Emma Colella, Domenico Colocci, Manuel Contin, Giacomo Fabbietti, Laura Gernhäuser, Roman Hillemanns, Hartmut Jacazio, Nicolo Kalweit, Alexander Philipp Kluge, Alex Kotliarov, Artem Křížek, Filip Lautner, Lukas Mager, Magnus Martinengo, Paolo Masciocchi, Silvia Menzel, Marius Wilm Mulliri, Alice Reidt, Felix Ricci, Riccardo Russo, Roberto Schledewitz, David Scioli, Gilda Senyukov, Serhiy Siddhanta, Sabyasachi Sonneveld, Jory Stachel, Johanna Šuljić, Miljenko Tiltmann, Nicolas Ramos, Arianna Grisel Torres Ulukutlu, Berkin Usai, Gianluca Van Beelen, Jacob Bastiaan Wu, Yitao Yüncü, Alperen
contents	Bent monolithic active pixel sensors are the basis for the planned fully cylindrical ultra low material budget tracking detector ITS3 of the ALICE experiment. This paper presents results from testbeam campaigns using high-energy particles to verify the performance of 50 um thick bent ALPIDE chips in terms of efficiency and spatial resolution. The sensors were bent to radii of 18, 24 and 30 mm, slightly smaller than the foreseen bending radii of the future ALICE ITS3 layers. An efficiency larger than $99.9\%$ and a spatial resolution of approximately 5 um, in line with the nominal operation of flat ALPIDE sensors, is obtained at nominal operating conditions. These values are found to be independent of the bending radius and thus constitute an additional milestone in the demonstration of the feasibility of the planned ITS3 detector. In addition, a special geometry in which the beam particles graze the chip and traverse it laterally over distances of up to 3 mm is investigated.
format	Preprint
id	arxiv_https___arxiv_org_abs_2502_04941
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Detection efficiency and spatial resolution of Monolithic Active Pixel Sensors bent to different radii Andronic, Anton Becht, Pascal Blidaru, Mihail Bogdan Bruno, Giuseppe Eugenio Carnesecchi, Francesca Chizzali, Emma Colella, Domenico Colocci, Manuel Contin, Giacomo Fabbietti, Laura Gernhäuser, Roman Hillemanns, Hartmut Jacazio, Nicolo Kalweit, Alexander Philipp Kluge, Alex Kotliarov, Artem Křížek, Filip Lautner, Lukas Mager, Magnus Martinengo, Paolo Masciocchi, Silvia Menzel, Marius Wilm Mulliri, Alice Reidt, Felix Ricci, Riccardo Russo, Roberto Schledewitz, David Scioli, Gilda Senyukov, Serhiy Siddhanta, Sabyasachi Sonneveld, Jory Stachel, Johanna Šuljić, Miljenko Tiltmann, Nicolas Ramos, Arianna Grisel Torres Ulukutlu, Berkin Usai, Gianluca Van Beelen, Jacob Bastiaan Wu, Yitao Yüncü, Alperen Instrumentation and Detectors Bent monolithic active pixel sensors are the basis for the planned fully cylindrical ultra low material budget tracking detector ITS3 of the ALICE experiment. This paper presents results from testbeam campaigns using high-energy particles to verify the performance of 50 um thick bent ALPIDE chips in terms of efficiency and spatial resolution. The sensors were bent to radii of 18, 24 and 30 mm, slightly smaller than the foreseen bending radii of the future ALICE ITS3 layers. An efficiency larger than $99.9\%$ and a spatial resolution of approximately 5 um, in line with the nominal operation of flat ALPIDE sensors, is obtained at nominal operating conditions. These values are found to be independent of the bending radius and thus constitute an additional milestone in the demonstration of the feasibility of the planned ITS3 detector. In addition, a special geometry in which the beam particles graze the chip and traverse it laterally over distances of up to 3 mm is investigated.
title	Detection efficiency and spatial resolution of Monolithic Active Pixel Sensors bent to different radii
topic	Instrumentation and Detectors
url	https://arxiv.org/abs/2502.04941