Results from Aerogel Cerenkov Counters

  • Guenter Poelz
Part of the Ettore Majorana International Science Series book series (EMISS, volume 14)


To fix the design parameters for the Aerogel Cerenkov counters for the TASSO detector several test modules were investigated. They all were equipped with aerogel with a refractive index around 1.025. Direct unscattered light contributes with about 7 photoelectrons when collected by a mirror. In detectors with diffuse reflecting walls 3–18 photoelectrons were measured depending on the size of the system. With the 32 cells of the TASSO Cerenkov detector an efficiency of 4.1 ± 0.3 photoelectrons for relativistic cosmic particles were found.


Silica Aerogel Threshold Curve Light Collection Cerenkov Radiator Cosmic Muon 
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  1. 1.
    M. Cantin, M. Casse, L. Koch, R. Jouan, P. Mestreau, D. Roussel, F. Bonnin, J. Moutel, and S.J. Teichner, Silica aerogel used as Cerenkov radiators, Nucl.Instr.Meth., 118:177 (1974).CrossRefGoogle Scholar
  2. 2.
    A detailed description of these counters may be found in a separate paper: H. Burkhardt, P. Koehler, R. Riethmüller, B.H. Wiik, R. Fohrmann, J. Franzke, H. Krasemann, R. Maschuw, G. Poelz, J. Reichardt, J. Ringel, O. Römer, R. Rüsch, P. Schmüser, R. van Staa, J. Freeman, P. Lecomte, T. Meyer, Sau Lan Wu and G. Zobernig, The TASSO Gas and Aerogel Cerenkov Counters, submitted to Nucl.Instr.Meth.(1980).Google Scholar
  3. 3.
    E.Lorenz, A measurement of the quantum efficiency of some 5″ photomultipliers with bialkali photocathode, Max-Planck-Institut, München, Report MPI-PAE/Exp.EL.: 57 (1976) P.J. Carlson, K.E. Johansson, J. Kasteman, J. Norrby, P. Pingot, S. Tavernier, F. Van den Bogaert, and L.van Lancker, Increased photoelectron collection efficiency of a photomultiplier in an aerogel Cerenkov counter, Nucl.Instr.Meth., 160:407 (1979).CrossRefGoogle Scholar
  4. 4.
    S.P. Ahlen, B.G. Cartwright, and G. Tarlé, Technique for painting light integration boxes, Nuc1.Instr.Meth. 143:513 (1977).CrossRefGoogle Scholar
  5. 5.
    Millipore GS from Millipore Corp. Bedford, Mass. USA.Google Scholar

Copyright information

© Plenum Press, New York 1983

Authors and Affiliations

  • Guenter Poelz
    • 1
  1. 1.II. Institut für ExperimentalphysikUniversität HamburgHamburgGermany

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