Large detectors and applications of photomultipliers in experiments at CERN

Detectors for high-energy physics make use of photomultipliers in a variety of ways. They include high resolution time-of-flight measurements. Cherenkov light detection, precise pulse-height measurements, etc. In particular, the use of large numbers of photomultipliers in total-energy (or 'calorimetry') detectors requires high stability, reliability and low-cost. This aspect is illustrated by the example of a new large detector built to observe proton- antiproton collisions at very high energies.