This is a collection of important lecture and original articles and commentaries by Martin Perl, discoverer of the tau lepton and the third generation of elementary particles, and this year''s Nobel Prize winner. This book contains a fascinating and realistic picture of experimental science based on the high energy physics research work carried out by him. Using reprints of his articles with his commentaries, the author presents the various aspects of experimental research in science: the pleasures and risks of experimental work; the pain and frustration with experiments that are useless or fail; the dreaming about experiments that were not carried out; the constant search for innovation and creativity in the work; and the special joy of discovery. The articles and commentaries range from the early days of bubble chambers and spark chambers in the 1950''s to the author''s present research, experiments at an electron-positron collider and a search for free quarks. The book is for the general reader as well as the scientist.

At high luminosity, bottom, charm and ? factories, synchrotron radiation and lost particles due to beam-gas interaction cause huge backgrounds to detectors, posing problems in trigger rates, radiation damage and efficiency. Studies of such effects have been made and are reported in this book.

These proceedings aim to provide a comprehensive overview of research, technology and applications in the field of accelerators. Contributions from the entire field of accelerators are presented, including low and high energy machines, and medical and industrial accelerators.

This is presently the best available source on design and optimization of particle factories using e e - circular accelerators at the same time givingthe physical background for their construction. It addresses scientists and graduate students which is clearly reflected in its pedagogical style. The book aims at summarizing all the currently available knowledge on the motivation to construct particle factories, the design considerations of each of the different machine options including their lattices and interaction regions, practical details of the major systems constituting the machines, as well as a wide view of possible factories worldwide. It is the most up-to-date and unique collection of information of particle factories presently available.

During the past decade considerable literature has appeared on the topic of exclusive reactions at high momentum transfer. Two important recent developments offer the possiblity of experimentally testing the theoretical ideas in a systematic way. These are the potential CEBAF energy upgrades and the proposed 15 - 30 GeV European Electron Accelerator, ELFE.This volume records the state-of-the-art in studying exclusive reactions at high momentum transfers and establishes a common body of knowledge to be shared by all. There is some emphasis on the use of perturbative calculations to connect hadron structure to experimental measureables and other topics, including color transparency, the use of QCD sum rules and experiemental data.

WEIN '98 focussed on searches for physics beyond the Standard Model of elementary particles at low and medium energies, including theoretical studies in these areas. In addition, selected topics in the physics of the Standard Model, searches for new physics at high energy facilities, and topics in nuclear and particle astrophysics were discussed. The conference was mainly composed of plenary talks reviewing the present status of the field. The proceedings include written versions of these plenary talks plus several invited talks given at the parallel sessions covering specific topics that could not be included in the plenary sessions.