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New 2km hall design

This presentation outlines a cost-effective redesign proposal for an experimental hall at a physics meeting. The focus is on reducing costs without compromising detector quality. The new design suggests a smaller vertical tunnel diameter, resulting in potential cost savings. Detailed studies recommend adjusting the detector position for optimal performance. Final cost estimates are provided in Japanese yen.

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New 2km hall design

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  1. Jan.10, 2004. 2km meeting TK New 2km hall design • Introduction • New design • Cost estimate

  2. Introduction • We are requested to think about a cheaper experimental hall. • On the other hand, we do not want to down-grade the detector design without any serious studies. • A smaller diameter vertical tunnel was considered. Original: 17m diameter New: 15m diameter (at the bottom) 13.5m diameter (except for bottom)

  3. Introduction K.Kaneyuki, Aug.20, 2003 OA2.5o • Detailed beam MC study suggested the previous detector position is not the best detector position. • Should be about 2m deeper (and 50cm to the north). SK 2.5o 2.452o F/N SK/2.5o SK/2.452o Neutrino energy (GeV)

  4. New design New Old 13.5m 17m

  5. New design (continued) New 15m Old 17m

  6. New design (continued) New Old =

  7. Cost estimates Unit: 108 yen

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