The Silicon Vertex Detector of the Belle II experiment

被引：4

作者：

Zani, L. ^{[4
]}

Adamczyk, K.

Aggarwal, L. ^{[10
]}

Aihara, H. ^{[18
]}

Aziz, T. ^{[11
]}

Bacher, S.

Bahinipati, S. ^{[6
]}

Batignani, G. ^{[12
,13
]}

Baudot, J. ^{[5
]}

Behera, P. K. ^{[7
]}

Bettarini, S. ^{[12
,13
]}

Bilka, T. ^{[3
]}

Bozek, A. ^{[21
]}

Buchsteiner, F. ^{[2
]}

Casarosa, G. ^{[12
,13
]}

Corona, L. ^{[12
,13
]}

Czank, T.

Das, S. B. ^{[8
]}

Dujany, G. ^{[5
]}

Finck, C. ^{[5
]}

Forti, F. ^{[12
,13
]}

Friedl, M. ^{[2
]}

Gabrielli, A. ^{[14
,15
]}

Ganiev, E. ^{[14
,15
,22
]}

Gobbo, B. ^{[15
]}

Halder, S. ^{[11
]}

Hara, K. ^{[16
,19
]}

Hazra, S. ^{[11
]}

Higuchi, T. ^{[17
]}

Irmler, C. ^{[2
]}

Ishikawa, A. ^{[16
,19
]}

Jeon, H. B.

Jin, Y. ^{[14
]}

Kaleta, M.

Kaliyar, A. B. ^{[11
]}

Kandra, J. ^{[3
]}

Kang, K. H. ^{[17
]}

Kapusta, P.

Kodys, P. ^{[3
]}

Kohriki, T.

Kumar, M. ^{[8
]}

Kumar, R. ^{[9
]}

La Licata, C. ^{[17
]}

Lalwani, K. ^{[8
]}

Leboucher, R. ^{[4
]}

Lee, S. C.

Libby, J. ^{[7
]}

Martel, L. ^{[5
]}

Massaccesi, L. ^{[12
,13
]}

Mayekar, S. N. ^{[11
]}

机构：

[1] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia

[2] Austrian Acad Sci, Inst High Energy Phys, A-1050 Vienna, Austria

[3] Charles Univ Prague, Fac Math & Phys, Prague 12116, Czech Republic

[4] Aix Marseille Univ, CNRS IN2P3, CPPM, F-13288 Marseille, France

[5] Univ Strasbourg, IPHC, UMR 7178, CNRS, F-67037 Strasbourg, France

[6] Indian Inst Technol Bhubaneswar, Bhubaneswar, India

[7] Indian Inst Technol Madras, Chennai 600036, India

[8] Malaviya Natl Inst Technol Jaipur, Jaipur 302017, India

[9] Punjab Agr Univ, Ludhiana 141004, India

[10] Panjab Univ, Chandigarh 160014, India

[11] Tata Inst Fundamental Res, Mumbai 400005, India

[12] Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy

[13] INFN, Sez Pisa, I-56127 Pisa, Italy

[14] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy

[15] INFN, Sez Trieste, I-34127 Trieste, Italy

[16] Grad Univ Adv Studies SOKENDAI, Hayama 2400193, Japan

[17] Univ Tokyo, Kavli Inst Phys & Math Universe WPI, Kashiwa 2778583, Japan

[18] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[19] High Energy Accelerator Res Org KEK, Tsukuba 3050801, Japan

[20] Kyungpook Natl Univ, Dept Phys, Daegu 41566, South Korea

[21] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

[22] DESY, D-22761 Hamburg, Germany

[23] INFN, Sez Bologna, I-40127 Bologna, Italy

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2022年 / 1038卷

基金：

欧洲研究理事会;

关键词：

Belle II; Silicon strip sensor; Vertex detector; Tracking; Radiation damage;

D O I：

10.1016/j.nima.2022.166952

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Since the start of data taking in spring 2019 at the SuperKEKB collider (KEK, Japan) the Belle II Silicon Vertex Detector (SVD) has been operating reliably and with high efficiency, while providing high quality data: high signal-to-noise ratio, greater than 99% hit efficiency, and precise spatial resolution. These attributes, combined with stability over time, result in good tracking efficiency. Currently the occupancy, dominated by beam-background hits, is quite low (about 0.5 % in the innermost layer), causing no problems to the SVD data reconstruction. In view of the operation at higher luminosity foreseen in the next years, specific strategies aiming to preserve the tracking performance have been developed and tested on data. The time stability of the trigger allows reducing sampling of the strip-amplifier waveform. The good hit-time resolution can be exploited to further improve the robustness against the higher level of beam background. First effects of radiation damage on strip noise, sensor currents and depletion voltage have been measured: they do not have any detrimental effect on the performance of the detector. Furthermore, no damage to the SVD is observed after sudden and intense bursts of radiation due to beam losses.

引用

页数：4

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