Characterisation of the first wafer-scale prototype for the ALICE ITS3 upgrade: the monolithic stitched sensor (MOSS)
Abstract
This paper presents the characterisation and testing of the first wafer-scale monolithic stitched sensor (MOSS) prototype developed for the ALICE ITS3 upgrade that is to be installed during the LHC Long Shutdown 3 (2026-2030). The MOSS chip design is driven by the truly cylindrical detector geometry that imposes that each layer is built out of two wafer-sized, bent silicon chips. The stitching technique is employed to fabricate sensors with dimensions of 1.4 25.9 cm, thinned to 50 m. The chip architecture, in-pixel front-end, laboratory and in-beam characterisation, susceptibility to single-event effects, and series testing are discussed. The testing campaign validates the design of a wafer-scale stitched sensor and the performance of the pixel matrix to be within the ITS3 requirements. The MOSS chip demonstrates the feasibility of the ITS3 detector concept and provides insights for further optimisation and development.
Cite
@article{arxiv.2510.11463,
title = {Characterisation of the first wafer-scale prototype for the ALICE ITS3 upgrade: the monolithic stitched sensor (MOSS)},
author = {Omar Abdelrahman and Gianluca Aglieri Rinella and Luca Aglietta and Giacomo Alocco and Matias Antonelli and Roberto Baccomi and Francesco Barile and Pascal Becht and Franco Benotto and Stefania Maria Beolè and Marcello Borri and Daniela Bortoletto and Naseem Bouchhar and Giuseppe Eugenio Bruno and Matthew Daniel Buckland and Szymon Bugiel and Paolo Camerini and Francesca Carnesecchi and Marielle Chartier and Domenico Colella and Angelo Colelli and Giacomo Contin and Giuseppe De Robertis and Wenjing Deng and Antonello Di Mauro and Vittorio Di Trapani and Maurice Donner and Ana Dorda Martin and Piotr Dorosz and Floarea Dumitrache and Lars Döpper and Gregor Hieronymus Eberwein and Domenico Elia and Simone Emiliani and Laura Fabbietti and Tommaso Fagotto and Xiaochao Fang and Henrik Fribert and Roman Gernhäuser and Piero Giubilato and Laura Gonella and Karl Gran Grodaas and Ola Slettevoll Groettvik and Vladimir Gromov and Malte Grönbeck and Philip Hauer and Hartmut Hillemanns and Guen Hee Hong and Yu Hu and Minyoung Chris Hwang and Marc Alain Imhoff and Barbara Jacak and Daniel Matthew Jones and Antoine Junique and Filip Křížek and Jetnipit Kaewjai and Anouk Kaiser and Jesper Karlsson Gumprecht and Markus Keil and Bernhard Ketzer and Jiyoung Kim and Lena Kirchner and Kritsada Kittimanapun and Alex Kluge and Chinorat Kobdaj and Artem Kotliarov and Thanushan Kugathasan and Marc König and Paola La Rocca and Natthawut Laojamnongwong and Lukas Lautner and Corentin Lemoine and Long Li and Beatrice Eva Liang-Gilman and Francesco Licciulli and Sanghoon Lim and Bong-Hwi Lim and Jian Liu and Flavio Loddo and Matteo Lupi and Magnus Mager and Philipp Mann and Georgios Mantzaridis and Davide Marras and Paolo Martinengo and Silvia Masciocchi and Annalisa Mastroserio and Soniya Mathew and Serena Mattiazzo and Marius Wilm Menzel and Nicola Minafra and Frederic Morel and Alice Mulliri and Anjali Ila Nambrath and Rajendra Nath Patra and Iaroslav Panasenko and Styliani Paniskaki and Caterina Pantouvakis and Cosimo Pastore and Stefania Perciballi and Francesco Piro and Adithya Pulli and Alexander Rachev and Alexander Rachevski and Ivan Ravasenga and Felix Reidt and Michele Rignanese and Giacomo Ripamonti and Isabella Sanna and Valerio Sarritzu and Umberto Savino and Iain Sedgwick and Serhiy Senyukov and Danush Shekar and Sabyasachi Siddhanta and David Silvermyr and Walter Snoeys and Joey Staa and Alessandro Sturniolo and Miljenko Šuljić and Timea Szollosova and Daniel Tapia Takaki and Livia Terlizzi and Nicolas Tiltmann and Antonio Trifirò and Christina Tsolanta and Rosario Turrisi and Berkin Ulukutlu and Gianluca Usai and Isabelle Valin and Giovanni Vecil and Pedro Vicente Leitao and Anna Villani and Chunzheng Wang and Zhenyu Ye and Emma Rose Yeats and Asli Yelkenci and Zijun Zhao and Alessandra Zingaretti},
journal= {arXiv preprint arXiv:2510.11463},
year = {2025}
}
Comments
Updated authors list. Improved wording