Design of the OBELIX monolithic CMOS pixel sensor for the Belle II vertex detector upgrade
Abstract Targeting a peak luminosity of 6 × 10 35 cm -2 s -1 , the Belle II experiment at the SuperKEKB in Japan is considering an upgrade of its interaction region. This upgrade involves the vertex detector, which will be replaced by a new fully pixelated vertex detector (VTX). A monolithic CMOS pixel sensor named OBELIX (Optimized BELle II pIXel) is proposed to be used in the VTX. Based on the existing TJ-Monopix2 chip initially developed for the ATLAS Inner Tracker (ITk) upgrade, OBELIX is designed in a 180 nm CMOS process with an improved pixel matrix and additional functionalities such as new on-chip voltage regulators and digital periphery. This paper will review the overall design of the VTX and the OBELIX sensor.
Authors
- D Xu (ORCID: https://orcid.org/0000-0002-1614-9606)
- S. Giroletti (ORCID: https://orcid.org/0009-0003-8954-7773)
- Y. Onuki (ORCID: https://orcid.org/0000-0002-1646-6847)
- G. Dujany (ORCID: https://orcid.org/0000-0002-1345-8163)
- L. Federici (ORCID: https://orcid.org/0000-0002-3401-9522)
- C. Schwanda (ORCID: https://orcid.org/0000-0003-4844-5028)
- Meike Vogt (ORCID: https://orcid.org/0000-0002-0608-1935)
- H. Krüger (ORCID: https://orcid.org/0000-0001-8287-3961)
- T. Higuchi (ORCID: https://orcid.org/0000-0002-7761-3505)
- W. M. Song (ORCID: https://orcid.org/0000-0003-1376-2293)
- C. Lacasta (ORCID: https://orcid.org/0000-0002-2623-6252)
- P. Pangaud (ORCID: https://orcid.org/0000-0003-1148-9182)
- M. Schwickardi (ORCID: https://orcid.org/0000-0003-2033-6700)
- Y. Buch
- S. Mondal (ORCID: https://orcid.org/0000-0002-3054-8400)
- C. Bespin (ORCID: https://orcid.org/0000-0002-5413-1730)
- J. Gong
- A. Frey (ORCID: https://orcid.org/0000-0001-7470-3874)
- J. Baudot (ORCID: https://orcid.org/0000-0001-5585-0991)
- Y. Peinaud
- D. Fougeron
- L. Schall (ORCID: https://orcid.org/0000-0003-0002-3790)
- C. Finck (ORCID: https://orcid.org/0000-0002-5068-5453)
- M. Barbero (ORCID: https://orcid.org/0000-0002-7824-3358)
- Franck Morel (ORCID: https://orcid.org/0000-0003-3812-9304)
- M. Bóna (ORCID: https://orcid.org/0000-0002-9660-580X)
- A. B. Kaliyar (ORCID: https://orcid.org/0000-0002-2211-619X)
- B. Pilsl
- S. Bettarini (ORCID: https://orcid.org/0000-0001-7742-2998)
- G. Rizzo (ORCID: https://orcid.org/0000-0003-1788-2866)
- J. Mazorra de Cos (ORCID: https://orcid.org/0000-0003-0525-2736)
- G. Bertolone (ORCID: https://orcid.org/0000-0001-9544-7486)
- A. Gallas Torreira (ORCID: https://orcid.org/0000-0002-2745-7954)
- T. Kishishita (ORCID: https://orcid.org/0000-0001-9694-6121)
- I. Ripp-Baudot (ORCID: https://orcid.org/0000-0002-1897-8272)
- J. Dingfelder (ORCID: https://orcid.org/0000-0001-5767-2121)
- P. Stavroulakis (ORCID: https://orcid.org/0000-0001-9914-7261)
- R. Sefri
- C. Hu-Guo
- V. Vobbilisetti (ORCID: https://orcid.org/0000-0002-4399-5082)
- B. Schwenker (ORCID: https://orcid.org/0000-0002-7120-3732)
- J. Serrano (ORCID: https://orcid.org/0000-0003-2489-7812)
- P. Breugnon
- Antonio Fernández Prieto (ORCID: https://orcid.org/0000-0003-1984-6367)
- M. Babeluk (ORCID: https://orcid.org/0000-0001-7951-452X)
- C. Mariñas (ORCID: https://orcid.org/0000-0003-1903-3251)
- T. Hara (ORCID: https://orcid.org/0000-0002-4321-0417)
- M. Minuti (ORCID: https://orcid.org/0000-0001-9577-2588)
- L. Corona (ORCID: https://orcid.org/0000-0002-2577-9909)
- K. R. Nakamura (ORCID: https://orcid.org/0000-0001-7012-7355)
- E. Riceputi (ORCID: https://orcid.org/0000-0002-0542-553X)
- A. Gabrielli (ORCID: https://orcid.org/0000-0001-7695-0537)
- Arvind Kumar (ORCID: https://orcid.org/0000-0001-6626-9799)
- C. Irmler
- F. U. Bernlochner (ORCID: https://orcid.org/0000-0001-8153-2719)
- F. Forti (ORCID: https://orcid.org/0000-0001-6535-7965)
- M. Massa (ORCID: https://orcid.org/0000-0001-6207-7511)
- R. Boudagga
- D. Howgill
- L. Massaccesi (ORCID: https://orcid.org/0000-0003-1762-4699)
- A. J. Bevan (ORCID: https://orcid.org/0000-0002-4105-9629)
- X. Y. Gao
- L. Molina Bueno (ORCID: https://orcid.org/0000-0001-9720-9764)
- D. Jeans (ORCID: https://orcid.org/0000-0002-5208-7617)
- H. Pham (ORCID: https://orcid.org/0000-0002-6133-3648)
- L. Gaioni
- V. Re (ORCID: https://orcid.org/0000-0003-0697-3420)
- G. Casarosa (ORCID: https://orcid.org/0000-0003-4137-938X)
- Y. Okazaki (ORCID: https://orcid.org/0000-0003-2677-5827)
- G. Traversi
- D. Auguste
- F. Bosi
- A. Himmi
- M. Karagounis
- A. Moggi
- J. Bonis
- A. Dorokhov (ORCID: https://orcid.org/0000-0001-5809-524X)
- Marcus Winter
- L. Ratti
- I. Valin
- T. Bergauer (ORCID: https://orcid.org/0000-0002-5786-0293)
- P. Barrillon
- S. Wang (ORCID: https://orcid.org/0000-0003-4671-9072)
Institutions
- University of Pisa (IT)
- University of Bergamo (IT)
- Centre National de la Recherche Scientifique (FR)
- University of Bonn (DE)
- Austrian Academy of Sciences (AT)
- High Energy Accelerator Research Organization (JP)
- Dortmund University of Applied Sciences and Arts (DE)
- Queen Mary University of London (GB)
- Jilin University (CN)
- Universidade de Santiago de Compostela (ES)
- The Graduate University for Advanced Studies, SOKENDAI (JP)
- Aix-Marseille Université (FR)
- University of Pavia (IT)
- Université Paris-Saclay (FR)
- Institut Pluridisciplinaire Hubert Curien (FR)
- Instituto de Física Corpuscular (ES)
- Kavli Institute for the Physics and Mathematics of the Universe (JP)
- Institute of High Energy Physics (AT)
- Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (FR)
- Istituto Nazionale di Fisica Nucleare, Sezione di Pisa (IT)
- Université de Strasbourg (FR)
- University of Göttingen (DE)
- The University of Tokyo (JP)
Publication Details
- Journal
- Journal of Instrumentation
- Published
- 2025-02-01
- DOI
- https://doi.org/10.1088/1748-0221/20/02/c02046
- Citations
- 1
- Primary Topic
- CCD and CMOS Imaging Sensors
- Type
- article
- Field-Weighted Citation Impact
- 0.73
Funders
- Ministerio de Ciencia, Innovación y Universidades
- European Commission
- Generalitat Valenciana