The Silicon Vertex Detector of the Belle II Experiment
| Autor: | Irmler, C., Adamczyk, K., Aggarwal, L., Aihara, H., Aziz, T., Bacher, S., Bahinipati, S., Batignani, G., Baudot, J., Behera, P.K., Bettarini, S., Bilka, T., Bozek, A., Buchsteiner, F., Casarosa, G., Corona, L., Czank, T., Das, S.B., Dujany, G., Finck, C., Forti, F., Friedl, M., Gabrielli, A., Ganiev, E., Gobbo, B., Halder, S., Hara, K., Hazra, S., Higuchi, T., Ishikawa, A., Jeon, H.B., Jin, Y., Kaleta, M., Kaliyar, A.B., Kandra, J., Kang, K.H., Kapusta, P., Kodyš, P., Kohriki, T., Kumar, M., Kumar, R., La Licata, C., Lalwani, K., Lautenbach, K., Leboucher, R., Lee, S.C., Libby, J., Martel, L., Massaccesi, L., Mohanty, G.B., Nakamura, K.R., Natkaniec, Z., Onuki, Y., Ostrowicz, W., Otani, F., Paladino, A., Paoloni, E., Park, H., Polat, L., Rao, K.K., Ripp-Baudot, I., Rizzo, G., Sato, Y., Schwanda, C., Serrano, J., Shimasaki, T., Suzuki, J., Tanaka, S., Tanigawa, H., Tenchini, F., Thalmeier, R., Tiwary, R., Tsuboyama, T., Uematsu, Y., Vitale, L., Wan, K., Wang, Z., Webb, J., Werbycka, O., Wiechczynski, J., Yin, H., Zani, L. |
|---|---|
| Přispěvatelé: | Institut Pluridisciplinaire Hubert Curien (IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Belle II SVD, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Belle-II SVD |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Event T0 estimation
Tracking detector Physics - Instrumentation and Detectors Physics::Instrumentation and Detectors Radiation damage pixel Instrumentation Mathematical Physics radiation: damage effect beam loss high Instrumentation and Detectors (physics.ins-det) Particle tracking detectors (Solid-state detectors) quality semiconductor detector: microstrip SVD burst damage asymmetry on-line Silicon strip detector performance Nuclear and High Energy Physics noise track data analysis: efficiency vertex detector FOS: Physical sciences BELLE KEK-B diamond Belle II luminosity [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] Solid state detectors numerical calculations spatial resolution activity report detector background resolution silicon stability tracks radiation efficiency correlation electronics: readout semiconductor detector microstrip |
| Zdroj: | 12th International Position Sensitive Detector Conference 12th International Position Sensitive Detector Conference, Sep 2021, Birmingham, United Kingdom Nucl.Instrum.Meth.A 15th Pisa Meeting on Advanced Detectors 15th Pisa Meeting on Advanced Detectors, May 2022, La Biodola, Italy. pp.167578 30th International Workshop on Vertex Detectors 30th International Workshop on Vertex Detectors, Sep 2021, Online, United Kingdom. pp.166688, ⟨10.1016/j.nima.2022.166688⟩ 15th Pisa Meeting on Advanced Detectors, May 2022, La Biodola, Italy. pp.167578, ⟨10.1016/j.nima.2022.167578⟩ PoS 41st International Conference on High Energy Physics 41st International Conference on High Energy Physics, Jul 2022, Bologna, Italy. pp.328, ⟨10.22323/1.414.0328⟩ JINST 12th International Conference on Position Sensitive Detectors 12th International Conference on Position Sensitive Detectors, Sep 2021, Birmingham, United Kingdom. pp.C08014, ⟨10.1088/1748-0221/17/08/C08014⟩ |
| Popis: | In 2019 the Belle II experiment started data taking at the asymmetric SuperKEKB collider (KEK, Japan) operating at the Y(4S) resonance. Belle II will search for new physics beyond the Standard Model by collecting an integrated luminosity of 50~ab$^{-1}$. The silicon vertex detector (SVD), consisting of four layers of double-sided silicon strip sensors, is one of the two vertex sub-detectors. The SVD extrapolates the tracks to the inner pixel detector (PXD) with enough precision to correctly identify hits in the PXD belonging to the track. In addition the SVD has standalone tracking capability and utilizes ionization to enhance particle identification in the low momentum region. The SVD is operating reliably and with high efficiency, despite exposure to the harsh beam background of the highest peak-luminosity collider ever built. High signal-to-noise ratio and hit efficiency have been measured, as well as the spatial resolution; all these quantities show excellent stability over time. Data-simulation agreement on cluster properties has recently been improved through a careful tuning of the simulation. The precise hit-time resolution can be exploited to reject out-of-time hits induced by beam background, which will make the SVD more robust against higher levels of background. During the first three years of running, radiation damage effects on strip noise, sensor currents and depletion voltage have been observed, as well as some coupling capacitor failure due to intense radiation bursts. None of these effects cause significant degradation in the detector performance. 7 pages, 5 figures, proceedings contribution at the 12th International Conference on Position Sensitive Detectors |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|