Proceedings of the 6Th Topical Seminar on Experimental Apparatus for Particle Physics and Astrophysics, Date: MAY 20-24, 1996, Location: SAN MINIATO TODESCO, ITALY, Patrocinadores: Italian Inst Nucl Phys, Univ Bologna, Univ Florence, Reg Toscana, Cassa Risparmio San Miniato, Electr & Instrumentat Firm, Host: CTR STUDI CAPPUCINI, CASSA RISPARMO SAN MINIATO