Year: 2017
Type: conference-paper
Abstract: The Belle II experiment at the SuperKEKB flavour factory will operate at an unprecedented lu- minosity of 8×10^35cm−2s−1, which is about 40 times larger than its predecessor KEKB. The VerteX Detector is composed of a two-layer DEPFET PiXel Detector (PXD) and a four-layer double sided silicon strip detector (SVD). To achieve a precise vertex position determination and an excellent low-momentum tracking, even under the high background and high trigger rate of 10kHz, the SVD employs several innovative techniques. In order to reduce the occupancy and to minimise the parasitic capacitance in the signal path, 1748 APV25 ASIC chips, which read-out signals from 224k strip channels, are directly mounted on the ladders with the novel Origami concept. The analog signals from APV25 are digitised by an FADC system and sent to the central DAQ. An online tracking system based on SVD hits provides the Regions Of Interests to PXD in order to reduce the data size to achieve the required bandwidth and data storage space. In this talk, we present the design principles and construction status of the Belle II SVD, together with preliminary results on sensors performances.
DOI: 10.22323/1.282.0248
Authors: Antonio Paladino, K. Adamczyk, H. Aihara, C. Angelini, T. Aziz, V. Babu, S. Bacher, S. Bahinipati, E. Barberio, Ti. Baroncelli, To. Baroncelli, A. K. Basith, Giovanni Batignani, A. Bauer, Prafulla Kumar Behera, T. Bergauer, S. Bettarini, B. Bhuyan, T. Bilka, F. Bosi, L. Bosisio, A. Bozek, F. Buchsteiner, L. Bulla, Giulia Casarosa, M. Ceccanti, D. Cervenkov, S. R. Chendvankar, N. Dash, G. De Pietro, S. T. Divekar, Z. Doležal, D. Dutta, F. Forti, M. Friedl, K. Hara, T. Higuchi, T. Horiguchi, C. Irmler, Akimasa Ishikawa, H. B. Jeon, C. Joo, Jakub Kandra, K. H. Kang, E. Kato, T. Kawasaki, P. Kodyš, T. Kohriki, S. Koike, M. M. Kolwalkar, P. Kvasnicka, L. Lanceri, J. Lettenbicher, T. Lueck, M. Maki, P. Mammini, S. N. Mayekar, G. B. Mohanty, S. Mohanty, T. Morii, K. R. Nakamura, Z. Natkaniec, K. Negishi, N. K. Nisar, Y. Onuki, W. Ostrowicz, E. Paoloni, H. Park, F. Pilo, A. Profeti, K. K. Rao, I. Rashevskaia, G. Rizzo, M. Rozanska, J. Sasaki, N. Sato, S. Schultschik, C. Schwanda, Y. Seino, N. Shimizu, J. Stypula, J. Suzuki, Shuji Tanaka, Kiyoshi Tanida, G. N. Taylor, R. Thalmeier, R. Thomas, T. Tsuboyama, S. Uozumi, P. Urquijo, L. Vitale, S. Watanuki, I. J. Watson, J. Webb, J. Wiechczynski, S. Williams, B. Würkner, H. Yamamoto, H. Yin, T. Yoshinobu, Laura Zani
Institutions: Institute of Nuclear Physics, Polish Academy of Sciences, The University of Tokyo, University of Pisa, Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, Tata Institute of Fundamental Research, Istituto Nazionale di Fisica Nucleare, Istituto Nazionale di Fisica Nucleare, Trento Institute for Fundamental Physics And Applications, Indian Institute of Technology Bhubaneswar, The University of Melbourne, Indian Institute of Technology Madras, Austrian Academy of Sciences, Institute of High Energy Physics, Indian Institute of Technology Guwahati, Charles University, University of Trieste, Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, High Energy Accelerator Research Organization, Kavli Institute for the Physics and Mathematics of the Universe, Tohoku University, Kyungpook National University, Kitasato University, Niigata University, Seoul National University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W3019586272