Operational experience and performance of the Belle II silicon vertex detector after the first SuperKEKB long shutdown

(Belle-II SVD Collaboration)

doi:10.1016/j.nima.2024.169652

Operational experience and performance of the Belle II silicon vertex detector after the first SuperKEKB long shutdown

(Belle-II SVD Collaboration)

Department of Physics

The University of Tokyo
H. Niewodniczanski Institute of Nuclear Physics
Indian Institute of Technology Bhubaneswar
Institut Pluridisciplinaire Hubert Curien
Indian Institute of Technology Madras
University of Pisa
National Institute for Nuclear Physics
German Electron Synchrotron
Austrian Academy of Sciences
Malaviya National Institute of Technology
Tata Institute of Fundamental Research
The Graduate University for Advanced Studies
High Energy Accelerator Research Organization, Tsukuba
Punjab Agricultural University
Aix-Marseille Université

Research output: Contribution to journal › Article › peer-review

Abstract

The Belle II experiment searches for beyond-the-standard-model physics using the Belle II detector and SuperKEKB collider. The silicon vertex detector (SVD) is crucial for particle tracking. After the 1.5-year shutdown from June 2022, Run 2 began in January 2024; Run 2 operation shows stable noise levels, high signal-to-noise ratios, and hit efficiency over 99%. To manage higher beam background from increased luminosity, new techniques such as hit-time selection and cluster grouping are being developed. These methods increase the acceptable level of occupancy by distinguishing hits from triggered collisions and other sources.

Original language	English
Article number	169652
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	1067
DOIs	https://doi.org/10.1016/j.nima.2024.169652
State	Published - Oct 2024

Keywords

Belle II
Radiation damage
Silicon strip detector
Vertex detector

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10.1016/j.nima.2024.169652

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@article{09d92629c8304d68938fa795ef848740,

title = "Operational experience and performance of the Belle II silicon vertex detector after the first SuperKEKB long shutdown",

abstract = "The Belle II experiment searches for beyond-the-standard-model physics using the Belle II detector and SuperKEKB collider. The silicon vertex detector (SVD) is crucial for particle tracking. After the 1.5-year shutdown from June 2022, Run 2 began in January 2024; Run 2 operation shows stable noise levels, high signal-to-noise ratios, and hit efficiency over 99\%. To manage higher beam background from increased luminosity, new techniques such as hit-time selection and cluster grouping are being developed. These methods increase the acceptable level of occupancy by distinguishing hits from triggered collisions and other sources.",

keywords = "Belle II, Radiation damage, Silicon strip detector, Vertex detector",

author = "\{(Belle-II SVD Collaboration)\} and F. Otani and K. Adamczyk and H. Aihara and S. Bacher and S. Bahinipati and J. Baudot and Behera, \{P. K.\} and S. Bettarini and T. Bilka and A. Bozek and F. Buchsteiner and G. Casarosa and L. Corona and Das, \{S. B.\} and G. Dujany and C. Finck and F. Forti and M. Friedl and A. Gabrielli and B. Gobbo and S. Halder and K. Hara and S. Hazra and T. Higuchi and C. Irmler and A. Ishikawa and M. Kaleta and Kaliyar, \{A. B.\} and Kang, \{K. H.\} and T. Kohriki and R. Kumar and K. Lalwani and K. Lautenbach and R. Leboucher and J. Libby and L. Martel and L. Massaccesi and Mohanty, \{G. B.\} and S. Mondal and Nakamura, \{K. R.\} and Z. Natkaniec and Y. Onuki and A. Paladino and E. Paoloni and Rao, \{K. K.\} and K. Ravindran and I. Ripp-Baudot and G. Rizzo and Y. Sato and C. Schwanda",

note = "Publisher Copyright: {\textcopyright} 2024 The Authors",

year = "2024",

month = oct,

doi = "10.1016/j.nima.2024.169652",

language = "English",

volume = "1067",

journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",

issn = "0168-9002",

publisher = "Elsevier B.V.",

}

Operational experience and performance of the Belle II silicon vertex detector after the first SuperKEKB long shutdown. / (Belle-II SVD Collaboration).
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 1067, 169652, 10.2024.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Operational experience and performance of the Belle II silicon vertex detector after the first SuperKEKB long shutdown

AU - (Belle-II SVD Collaboration)

AU - Otani, F.

AU - Adamczyk, K.

AU - Aihara, H.

AU - Bacher, S.

AU - Bahinipati, S.

AU - Baudot, J.

AU - Behera, P. K.

AU - Bettarini, S.

AU - Bilka, T.

AU - Bozek, A.

AU - Buchsteiner, F.

AU - Casarosa, G.

AU - Corona, L.

AU - Das, S. B.

AU - Dujany, G.

AU - Finck, C.

AU - Forti, F.

AU - Friedl, M.

AU - Gabrielli, A.

AU - Gobbo, B.

AU - Halder, S.

AU - Hara, K.

AU - Hazra, S.

AU - Higuchi, T.

AU - Irmler, C.

AU - Ishikawa, A.

AU - Kaleta, M.

AU - Kaliyar, A. B.

AU - Kang, K. H.

AU - Kohriki, T.

AU - Kumar, R.

AU - Lalwani, K.

AU - Lautenbach, K.

AU - Leboucher, R.

AU - Libby, J.

AU - Martel, L.

AU - Massaccesi, L.

AU - Mohanty, G. B.

AU - Mondal, S.

AU - Nakamura, K. R.

AU - Natkaniec, Z.

AU - Onuki, Y.

AU - Paladino, A.

AU - Paoloni, E.

AU - Rao, K. K.

AU - Ravindran, K.

AU - Ripp-Baudot, I.

AU - Rizzo, G.

AU - Sato, Y.

AU - Schwanda, C.

PY - 2024/10

Y1 - 2024/10

N2 - The Belle II experiment searches for beyond-the-standard-model physics using the Belle II detector and SuperKEKB collider. The silicon vertex detector (SVD) is crucial for particle tracking. After the 1.5-year shutdown from June 2022, Run 2 began in January 2024; Run 2 operation shows stable noise levels, high signal-to-noise ratios, and hit efficiency over 99%. To manage higher beam background from increased luminosity, new techniques such as hit-time selection and cluster grouping are being developed. These methods increase the acceptable level of occupancy by distinguishing hits from triggered collisions and other sources.

AB - The Belle II experiment searches for beyond-the-standard-model physics using the Belle II detector and SuperKEKB collider. The silicon vertex detector (SVD) is crucial for particle tracking. After the 1.5-year shutdown from June 2022, Run 2 began in January 2024; Run 2 operation shows stable noise levels, high signal-to-noise ratios, and hit efficiency over 99%. To manage higher beam background from increased luminosity, new techniques such as hit-time selection and cluster grouping are being developed. These methods increase the acceptable level of occupancy by distinguishing hits from triggered collisions and other sources.

KW - Belle II

KW - Radiation damage

KW - Silicon strip detector

KW - Vertex detector

UR - https://www.scopus.com/pages/publications/85200706478

U2 - 10.1016/j.nima.2024.169652

DO - 10.1016/j.nima.2024.169652

M3 - Article

AN - SCOPUS:85200706478

SN - 0168-9002

VL - 1067

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

M1 - 169652

ER -

Operational experience and performance of the Belle II silicon vertex detector after the first SuperKEKB long shutdown

Abstract

Keywords

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