The present volume is based on the proceedings of the 12th Workshop of the INFN ELOISATRON Project, held at the "Ettore Majorana" Centre for Scientific Culture (EMCSC), Erice (frapani), Sicily, Italy, in the period September 15-20, 1990. The proceedings deal with the presentation of "New Technologies for Supercolliders". Three new energy frontiers (16,40 and 200 TeV) are now opened up for the future of Subnuclear Physics. Basic problems above the Fermi-energy are crowding up: but no one knows the energy levels needed for their solution. This is why the technology for experiments with the new generation of Supercolliders needs to be pursued having in mind the problems which are of common interest in the three energy frontiers. The primary purpose of the Workshop was to contribute towards the highest energy limit in the search for new instruments and new technologies. Furthermore, the present status and performances of various detector technologies were reviewed. The possible options for a powerful apparatus whose goal would be the discovery of the top, Higgs and SUSY particles in a very high energy, high rate environment, were finally analysed. The Workshop was sponsored by the Italian National Institute for Nuclear Physics (INFN), the Italian Ministry of Education, the Italian Ministry of Scientific and Technological Research and the Sicilian Regional Government. We are thankful to the staff of EMCSC for their efficient and warm support.

This volume contains topical papers covering the various aspects of instrumentation in high energy physics. The subjects of the contributions, all previously unpublished, have been chosen to provide an overview of the fundamental processes and of the technological problems encountered in detecting, tracking and identifying charged and neutral particles in modern particle physics experiments.Each contribution offers a concise but complete description of the state-of-the-art regarding the subject, and is addressed to post-doctoral and research staff readers; it will also be found useful as a teaching aid for students and participants in specialized schools and workshops on intermediate and high energy experimental physics.

In the year 2000, the city of Bologna was the European Capital for Culture. For this reason, the University of Bologna and its Academy of Sciences, following the Gugliemo Marconi Centenary and the Luigi Galvani Bicentenary Celebrations, decided to call attention to the major achievements of their most distinguished members, in science and technology. This invaluable volume presents a series of inventions and technological developments, some thought of and directly implemented by Professor Antonino Zichichi, others suggested and developed under his leadership, all of them having contributed to the discovery of new particles and new phenomena in the field of subnuclear physics. The book was conceived by an eminent scientist, Professor Dr Björn H. Wiik, Director of Germany's most prestigious physics laboratory, DESY (Hamburg). It would not be published were it not for Professor Dr Albrecht Wagner, Chairman of the DESY Board of Directors, and Dr Horst Wenninger from CERN (Geneva), the greatest European physics laboratory.

The proceedings volume includes about 50 invited talks by experts, covering advances in the following fields of instrumentation for colliding beam physics: 1. Tracking; 2. Vertex detectors; 3. Particle identification; 4. Calorimetry; 5. Electronics and trigger systems; 6. Interactions between detectors and accelerators in addition to reviews about the most advanced ideas in these fields.