The new beampipe for the Belle experiment

R. Abe, T. Abe, H. Aihara, Y. Asano, T. Aso, A. Bakich, T. Browder, M. C. Chang, Y. Chao, K. F. Chen, S. Chidzik, J. Dalseno, R. Dowd, J. Dragic, C. W. Everton, R. Fernholz, M. Friedl, H. Fujii, Z. W. Gao, A. GordonY. N. Guo, J. Haba, K. Hara, T. Hara, Y. Harada, T. Haruyama, K. Hasuko, K. Hayashi, M. Hazumi, E. M. Heenan, T. Higuchi, H. Hirai, N. Hitomi, A. Igarashi, Y. Igarashi, H. Ikeda, H. Ishino, K. Itoh, S. Iwaida, J. Kaneko, P. Kapusta, R. Karawatzki, K. Kasami, H. Kawai, T. Kawasaki, A. Kibayashi, S. Koike, S. Korpar, P. Krizan, H. Kurashiro, A. Kusaka, T. Lesiak, A. Limosani, W. C. Lin, D. Marlow, H. Matsumoto, Y. Mikami, H. Miyake, G. R. Moloney, T. Mori, T. Nakadaira, Y. Nakano, Z. Natkaniec, S. Nozaki, R. Ohkubo, F. Ohno, S. Okuno, Y. Onuki, W. Ostrowicz, H. Ozaki, L. Peak, M. Pernicka, M. Rosen, M. Rozanska, N. Sato, S. Schmid, T. Shibata, R. Stamen, S. Stanic, H. Steininger, K. Sumisawa, J. Suzuki, H. Tajima, O. Tajima, K. Takahashi, F. Takasaki, N. Tamura, M. Tanaka, G. N. Taylor, H. Terazaki, T. Tomura, K. Trabelsi, W. Trischuk, T. Tsuboyama, K. Uchida, K. Ueno, K. Ueno, N. Uozaki, Y. Ushiroda, S. Vahsen, G. Varner, K. Varvell, Y. S. Velikzhanin, C. C. Wang, M. Z. Wang, M. Watanabe, Y. Watanabe, Y. Yamada, H. Yamamoto, Y. Yamashita, Y. Yamashita, M. Yamauchi, H. Yanai, R. Yang, Y. Yasu, M. Yokoyama, T. Ziegler, D. Zontar

Research output: Contribution to journalConference article

4 Citations (Scopus)

Abstract

We have upgraded the beampipe and the silicon vertex tracker of the Belle detector for increased luminosity and to achieve better vertex resolution. The radius of the beampipe was reduced from 2 to 1.5cm to achieve better vertex resolution. In order to reduce the beam background that could accompany the reduction of the beampipe radius, a massive mask made of tantalum and tungsten was placed on each side of the central section. The total weight of them is 40 kg. The maximum radiation dose of the silicon tracker is measured about 80 krad/yr. This is lower than the dose of 100krad per year with the previous beampipe even though the beampipe radius is smaller. The beampipe is designed to minimize heating, and enough cooling power is provided by the liquid cooling.

Original languageEnglish
Pages (from-to)558-561
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume535
Issue number1-2
DOIs
Publication statusPublished - Dec 11 2004
Externally publishedYes
EventProceedings of the 10th International Viennna Conference - Vienna, Austria
Duration: Feb 16 2004Feb 21 2004

Keywords

  • Beampipe
  • Belle

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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