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| Format: | Preprint |
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2025
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| Online Access: | https://arxiv.org/abs/2504.19090 |
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| _version_ | 1866918149432016896 |
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| author | Atmacan, Hulya Belhorn, Matt Guan, Yinghui Li, Longke Pal, Bilas Sandilya, Saurabh Schwartz, Alan Wang, Boqun Watanuki, Shun Andrew, Matthew Barrett, Matthew Bessner, Martin Browder, Thomas Bynes, J. Cercillieux, J. Dubey, Shawn Hartbrich, Oskar Ketter, Chris Kirby, Brian Kohani, Shahab Kotchetkov, D. Macchiarulo, Luca Macek, B. Nishimura, Kurtis Purwar, H. Sang, Z. Shebalin, V. Tripathy, S. Varner, Gary Yoshihara, K. Kohriki, T. Wang, X. Maharana, S. P. Vismaya, V. S. Visser, Gerard Gaz, Alessandro Lacaprara, Stefano Stroili, R. Torassa, Ezio Mussa, Roberto Tamponi, Umberto Krizan, Peter Korpar, Samo Nanut, Tara Novosel, A. Petric, Marko Rizzuto, L. Staric, Marko Cremaldi, Lucien Sanders, David Adachi, Y. Arita, Y. Furumura, D. Hara, S. Hayakawa, T. Hirose, S. Horii, Y. Iijima, Toru Inami, Kenji Ito, Y. Kato, Y. Kiribe, N. Koga, R. Kojima, K. Maeda, A. Maeda, Y. Maehara, K. Maeshima, R. Matsuoka, Kodai Muroyama, G. Nakano, T. Okubo, R. Okuto, R. Omori, R. Senga, S. Suzuki, K. Takeichi, H. Tsuzuki, N. Yonekura, T. Conrad, R. Fast, James Fulsom, Brian Strube, Jan Wood, Lynn Danko, I. Gu, T. Herring, N. Nisar, N. K. Roffe, S. Savinov, Vladimir Wang, E. Bhardwaj, Vishal Loos, Alyssa Purohit, Milind Rosenfeld, Carl |
| author_facet | Atmacan, Hulya Belhorn, Matt Guan, Yinghui Li, Longke Pal, Bilas Sandilya, Saurabh Schwartz, Alan Wang, Boqun Watanuki, Shun Andrew, Matthew Barrett, Matthew Bessner, Martin Browder, Thomas Bynes, J. Cercillieux, J. Dubey, Shawn Hartbrich, Oskar Ketter, Chris Kirby, Brian Kohani, Shahab Kotchetkov, D. Macchiarulo, Luca Macek, B. Nishimura, Kurtis Purwar, H. Sang, Z. Shebalin, V. Tripathy, S. Varner, Gary Yoshihara, K. Kohriki, T. Wang, X. Maharana, S. P. Vismaya, V. S. Visser, Gerard Gaz, Alessandro Lacaprara, Stefano Stroili, R. Torassa, Ezio Mussa, Roberto Tamponi, Umberto Krizan, Peter Korpar, Samo Nanut, Tara Novosel, A. Petric, Marko Rizzuto, L. Staric, Marko Cremaldi, Lucien Sanders, David Adachi, Y. Arita, Y. Furumura, D. Hara, S. Hayakawa, T. Hirose, S. Horii, Y. Iijima, Toru Inami, Kenji Ito, Y. Kato, Y. Kiribe, N. Koga, R. Kojima, K. Maeda, A. Maeda, Y. Maehara, K. Maeshima, R. Matsuoka, Kodai Muroyama, G. Nakano, T. Okubo, R. Okuto, R. Omori, R. Senga, S. Suzuki, K. Takeichi, H. Tsuzuki, N. Yonekura, T. Conrad, R. Fast, James Fulsom, Brian Strube, Jan Wood, Lynn Danko, I. Gu, T. Herring, N. Nisar, N. K. Roffe, S. Savinov, Vladimir Wang, E. Bhardwaj, Vishal Loos, Alyssa Purohit, Milind Rosenfeld, Carl |
| contents | We report on the construction, operation, and performance of the Time-of-Propagation detector with imaging used for the Belle II experiment running at the Super-KEKB $e^+e^-$ collider. This detector is located in the central barrel region and uses Cherenkov light to provide particle identification among hadrons. The Cherenkov light is radiated in highly polished bars of synthetic fused silica (quartz) and transported to the ends of the bars via total internal reflection. One bar end is instrumented with finely segmented micro-channel-plate photomultiplier tubes to record the light, while the other end has a mirror attached to reflect the photons back to the instrumented end. Both the propagation times and hit positions of the Cherenkov photons are measured; these depend on the Cherenkov angle and together provide good discrimination among charged pions, kaons, and protons with momenta up to around 4 GeV/$c$. To date, the detector has been used to record and analyze almost 600 fb$^{-1}$ of Belle II data. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_19090 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The Imaging Time-of-Propagation Detector at Belle II Atmacan, Hulya Belhorn, Matt Guan, Yinghui Li, Longke Pal, Bilas Sandilya, Saurabh Schwartz, Alan Wang, Boqun Watanuki, Shun Andrew, Matthew Barrett, Matthew Bessner, Martin Browder, Thomas Bynes, J. Cercillieux, J. Dubey, Shawn Hartbrich, Oskar Ketter, Chris Kirby, Brian Kohani, Shahab Kotchetkov, D. Macchiarulo, Luca Macek, B. Nishimura, Kurtis Purwar, H. Sang, Z. Shebalin, V. Tripathy, S. Varner, Gary Yoshihara, K. Kohriki, T. Wang, X. Maharana, S. P. Vismaya, V. S. Visser, Gerard Gaz, Alessandro Lacaprara, Stefano Stroili, R. Torassa, Ezio Mussa, Roberto Tamponi, Umberto Krizan, Peter Korpar, Samo Nanut, Tara Novosel, A. Petric, Marko Rizzuto, L. Staric, Marko Cremaldi, Lucien Sanders, David Adachi, Y. Arita, Y. Furumura, D. Hara, S. Hayakawa, T. Hirose, S. Horii, Y. Iijima, Toru Inami, Kenji Ito, Y. Kato, Y. Kiribe, N. Koga, R. Kojima, K. Maeda, A. Maeda, Y. Maehara, K. Maeshima, R. Matsuoka, Kodai Muroyama, G. Nakano, T. Okubo, R. Okuto, R. Omori, R. Senga, S. Suzuki, K. Takeichi, H. Tsuzuki, N. Yonekura, T. Conrad, R. Fast, James Fulsom, Brian Strube, Jan Wood, Lynn Danko, I. Gu, T. Herring, N. Nisar, N. K. Roffe, S. Savinov, Vladimir Wang, E. Bhardwaj, Vishal Loos, Alyssa Purohit, Milind Rosenfeld, Carl High Energy Physics - Experiment Instrumentation and Detectors We report on the construction, operation, and performance of the Time-of-Propagation detector with imaging used for the Belle II experiment running at the Super-KEKB $e^+e^-$ collider. This detector is located in the central barrel region and uses Cherenkov light to provide particle identification among hadrons. The Cherenkov light is radiated in highly polished bars of synthetic fused silica (quartz) and transported to the ends of the bars via total internal reflection. One bar end is instrumented with finely segmented micro-channel-plate photomultiplier tubes to record the light, while the other end has a mirror attached to reflect the photons back to the instrumented end. Both the propagation times and hit positions of the Cherenkov photons are measured; these depend on the Cherenkov angle and together provide good discrimination among charged pions, kaons, and protons with momenta up to around 4 GeV/$c$. To date, the detector has been used to record and analyze almost 600 fb$^{-1}$ of Belle II data. |
| title | The Imaging Time-of-Propagation Detector at Belle II |
| topic | High Energy Physics - Experiment Instrumentation and Detectors |
| url | https://arxiv.org/abs/2504.19090 |