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

Otani, F.
•
Adamczyk, K.
•
Aihara, H.
altro
Zeng, F.
2024
  • conference object

Periodico
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT
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.
DOI
10.1016/j.nima.2024.169652
WOS
WOS:001295909900001
Archivio
https://hdl.handle.net/11368/3097859
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85200706478
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by-nc-nd/4.0/
Soggetti
  • Belle II

  • Radiation damage

  • Silicon strip detecto...

  • Vertex detector

  • Signal to noise ratio...

  • Silicon

  • Silicon detector

  • Belle II

  • Model physic

  • Operational experienc...

  • Operational performan...

  • Particle tracking

  • Silicon Strip Detecto...

  • Silicon Vertex Detect...

  • SuperKEKB

  • The standard model

  • Vertex detector

  • Radiation damage

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