Level-1 silicon vertex detector trigger at Belle

S. Vahsen, M. Barbero, T. Browder, M. Rosen, K. Trabelsi, K. Uchida, G. Varner, S. Okuno, P. Kapusta, T. Lesiak, Z. Natkaniec, W. Ostrowicz, M. Rozanska, S. Fratina, S. Korpar, P. Križan, D. Žontar, J. Dalseno, R. Dowd, G. R. MoloneyG. N. Taylor, Y. Yamashita, T. Kawasaki, H. Matsumoto, Y. Onuki, T. Shibata, N. Tamura, M. Watanabe, T. Hara, D. Heffernan, H. Miyake, K. Sumisawa, S. Chidzik, A. Chouvikov, R. Fernholz, B. Harrop, D. Marlow, R. Yang, T. Ziegler, A. Bakich, L. Peak, K. Varvell, M. C. Chang, Y. Chao, K. F. Chen, J. Schümann, K. Ueno, Y. S. Velikzhanin, C. C. Wang, M. Z. Wang, Y. Mikami, S. Nozaki, H. Yamamoto, Y. Fujiyama, H. Ishino, J. Kaneko, A. Kibayashi, H. Kurashiro, F. Ohno, S. Ono, K. Takahashi, Y. Watanabe, H. Aihara, A. Kusaka, T. Nakadaira, H. Tajima, T. Aso, H. Fujii, J. Haba, K. Hara, T. Haruyama, K. Hayashi, M. Hazumi, T. Higuchi, Y. Igarashi, H. Ikeda, K. Kasami, S. Koike, R. Ohkubo, H. Ozaki, N. Sato, R. Stamen, J. Suzuki, O. Tajima, F. Takasaki, M. Tanaka, T. Tsuboyama, K. Ueno, Y. Ushiroda, M. Yamauchi, Y. Yasu

Research output: Contribution to journalConference article

Abstract

We present a newly developed fast trigger system that uses the silicon vertex detector (SVD) for the Belle experiment at the KEKB energy-asymmetric e+e- collider. It is designed to issue the trigger with a latency of 1.85 μs for the Belle central trigger system (GDL). The primary purpose of the SVD trigger is to reduce beam-induced background events by requiring tracks that come from the interaction point. The system receives trigger signals from VA1TA front-end integrated circuits, which read out signals on the silicon-strips. SVD tracks are constructed with them in combination with the trigger information of the Central Drift Chamber (CDC), which is located outside the SVD. Performance of the SVD trigger is evaluated with collision data.

Original languageEnglish
Article numberN33-116
Pages (from-to)1716-1720
Number of pages5
JournalIEEE Nuclear Science Symposium Conference Record
Volume3
Publication statusPublished - Dec 1 2004
Externally publishedYes
Event2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors - Rome, Italy
Duration: Oct 16 2004Oct 22 2004

Keywords

  • Belle
  • KEKB
  • Silicon vertex detector
  • Trigger
  • VA1TA

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

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    Vahsen, S., Barbero, M., Browder, T., Rosen, M., Trabelsi, K., Uchida, K., Varner, G., Okuno, S., Kapusta, P., Lesiak, T., Natkaniec, Z., Ostrowicz, W., Rozanska, M., Fratina, S., Korpar, S., Križan, P., Žontar, D., Dalseno, J., Dowd, R., ... Yasu, Y. (2004). Level-1 silicon vertex detector trigger at Belle. IEEE Nuclear Science Symposium Conference Record, 3, 1716-1720. [N33-116].