The Belle trigger system with the new silicon vertex detector SVD2

Ziegler, Thomas; R, Abe; Abe, T.; Aihara, H.; Asano, Y.; Aso, T.; Bakich, A. M.; Browder, T. E.; Chang, M.-C.; Chào, Y.; Chen, Kai-Feng; Chidzik, S.; Dalseno, J.; Dowd, Richard M.; Dragic, J.; Everton, C.W.; Fernholz, Robert; Friedl, M.; Fujii, Hirofumi; Gao, Z.; Gordon, A.; Guo, Y.N.; Haba, J.; Hara, K.; Hara, T.; Harada, Yasunari; Haruyama, T.; Hasuko, K.; Hayashi, Kohei; Hazumi, M.; Heenan, E. M.; Higuchi, T.; Hirai, H.; Hitomi, Nobuteru; Igarashi, Akinori; Igarashi, Y.; Ikeda, Hirokazu; Ishino, H.; Itoh, K.; Iwaida, S.; Kaneko, J.; Kapusta, P.; Karawatzki, R.; Kasami, K.; Kawai, Hiroyuki; Kawasaki, T.; Kibayashi, A.; Koike, S. T.; Korpar, S.; Križan, P.; Kurashiro, H.; Kusaka, A.; Lesiak, T.; Limosani, A.; Lin, W. C.; Marlow, D.; Matsumoto, Hiroshi; Mikami, Y.; Miyake, H.; Moloney, G. R.; Mori, Takashi; Nakadaira, T.; Nakano, Yu; Natkaniec, Z.; Nozaki, S.; Ohkubo, R.; Ohno, F.; Okuno, S.; Onuki, Y.; Ostrowicz, W.; Ozaki, H.; Peak, L. S.; Pernicka, M.; Rosen, M.; Różańska, M.; Sato, N.; Schmid, S.; Shibata, T. A.; Stamen, R.; Stanič, S.; Steininger, H.; Sumisawa, K.; Suzuki, Jun–ichi; Tajima, H.; Tajima, O.; Takahashi, Keníchi; Takasaki, F.; Tamura, N.; Tanaka, M.; Taylor, G. N.; Terazaki, H.; Tomura, T.; Trabelsi, K.; Trischuk, W.; Tsuboyama, T.; Uchida, K.; Ueno, K.; Uozaki, N.; Ushiroda, Y.; Vahsen, S.; Varner, G.; Varvell, K. E.; Velikzhanin, Y.; Wang, C.C.; Wang, M.Z.; Watanabe, M.; Watanabe, Y.; Yamada, Y.; Yamamoto, H.; Yamashita, Y.; Yamauchi, M.; Yanai, Haruo; Yang, R. X.; Yasu, Y.; Yokoyama, M.; Zontar,

doi:10.1109/tns.2004.832716

Cited by 2 publications

(1 citation statement)

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“…• An increase in the acceptance of the SVD to match that of the Belle detector. • Introduction of trigger capability in the VA1TA front-end readout chip [9]. • Prevention of the break down of ac coupling in the silicon sensors.…”

Section: Introductionmentioning

confidence: 99%

The data acquisition system of the Belle silicon vertex detector (SVD) upgrade

Ishino¹,

R²,

Abe³

et al. 2004

IEEE Trans. Nucl. Sci.

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A newly developed data acquisition system (DAQ) for the upgraded silicon vertex detector (SVD2) in the Belle experiment is described. The system consists of 12 PCs connected through PCI I/O boards to 36 flash analog-to-digital converters (FADCs) to read out a system comprising a total of 110 592 strips. It is designed to cope with the increased number of readout channels and the maximum trigger rate of 1 kHz, foreseen in the future operation with higher beam currents. A measurement of the system performance using sparsification algorithm we have developed yields a 1.3-kHz readout rate for a 5% occupancy with less than 5% dead time, which satisfies the requirements on the maximum trigger rate.Index Terms-Belle, data acquisition, silicon vertex detector.

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