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Comment: 5 pages, 6 figures, 8 .eps files, RICH2002 conference, Pylos
Comment: 6 pages, 2 figures, to appear in the proceedings of International Conference on B-Physics at Hadron Machines (Beauty 2006), Oxford, England, 25-29 Sep 2006
Comment: 10 pages, 6 figures
Comment: Invited talk at the Workshop on the CKM Unitarity Triangle, IPPP Durham, April 2003, 5 pages, 7 figures
We report on studies of 64-channel Multianode Photo-Multiplier Tubes (MaPMTs) as photo-detectors for Ring Imaging CHerenkov (RICH) counters. The newly available 8-dynode stage MaPMT was tested in particle beams at CERN. The MaPMT signals were read out directly with the Beetle1.2 chip which was designed for the LHCb environment and operates at 40 MHz. The photon yield and signal losses were determined for a cluster of 3×3 close-packed MaPMTs. The performance of the 8-dynode stage MaPMT was compared to that of the 12-dynode stage MaPMT which has a larger intrinsic gain.
A cluster of multi-anode photomultiplier tubes (MaPMTs) equipped with focusing lenses in front of the tubes was tested in a prototype ring imaging Cherenkov (RICH) detector in a charged particle beam. The readout electronics were capable of capturing the data at 40 MHz. The effects due to charged particles and magnetic field on the MaPMT performance were also studied. The results are used to evaluate the MaPMT as a possible photodetector for the LHCb RICH detectors.
[[abstract]]The present report documents the results of Working Group 2: B, D and K decays, of the workshop on Flavor in the Era of the LHC, held at CERN from November 2005 through March 2007.With the advent of the LHC, we will be able to probe New Physics (NP) up to
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