The new double sided silicon microvertex detector for the L3 experiment

O. Adriani, J. Alcaraz, S. Ahlen, G. Ambrosi, A. Basçhirotto, R. Battiston, A. Bay, G. Bencze, B. Bertucci, M. Biasini, G. M. Bilei, G. J. Bobbink, M. Bosetti, M. L. Brooks, J. Busenitz, W. J. Burger, C. Camps, M. Caria, G. Castellini, A. ChenT. E. Coan, V. Commichau, D. DiBitonto, P. Duinker, S. Easo, P. Extermann, E. Fiandrini, A. Gougas, K. Hangarter, C. Hauviller, A. Herve, S. Hou, I. Josa, J. S. Kapustinski, D. Kim, W. W. Kinnison, J. Kornis, V. R. Krastev, G. Landi, M. Lebeau, P. Lecomte, D. M. Lee, R. Leiste, W. T. Lin, W. Lohmann, R. Massetti, G. B. Mills, H. Nowak, G. Passaleva, T. Paul, M. Pauluzzi, S. Pensotti, P. G. Rancoita, M. Rattaggi, A. Rosch, A. Santocchia, M. Sachwitz, P. Schmitz, B. Schöneich, L. Servoli, G. Susinno, G. Terzi, J. Toth, G. M. Viertel, H. Vogt, S. Waldmeier, J. Wegmann, R. Weill, J. Xu, S. C. Yeh, B. Zhou

Research output: Contribution to journalArticle

4 Citations (Scopus)


The new technologies used in the construction of the L3 Silicon Microvertex Detector (SMD) at LEP are presented. The SMD consists of two cylindrical layers of double sided silicon sensors to provide very precise measurements of both rφ and z coordinates. In order to minimize the amount of material in the central region, a Kapton fanout has been developed to bring the signals of the z strips (transverse coordinate) to the end of the mechanical structure. To get rid of the leakage currents a new capacitor chip, with diode protection against overvoltages, has been designed and used. In addition, a solution based on optodecoupling has been adopted to read the silicon n-side strips operating at the bias voltage.

Original languageEnglish
Pages (from-to)431-435
Number of pages5
JournalNuclear Inst. and Methods in Physics Research, A
Issue number2-3
Publication statusPublished - Sep 1 1994

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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    Adriani, O., Alcaraz, J., Ahlen, S., Ambrosi, G., Basçhirotto, A., Battiston, R., Bay, A., Bencze, G., Bertucci, B., Biasini, M., Bilei, G. M., Bobbink, G. J., Bosetti, M., Brooks, M. L., Busenitz, J., Burger, W. J., Camps, C., Caria, M., Castellini, G., ... Zhou, B. (1994). The new double sided silicon microvertex detector for the L3 experiment. Nuclear Inst. and Methods in Physics Research, A, 348(2-3), 431-435.