Abstract

By shortening the distance between the photocathode and the first dynode to 1 mm and using a finer mesh size of 2500 lines/in. with 4 μm φ , a 24 anode linear-array of fine-mesh photomultiplier tube has produced a clear single-photon peak in its pulse-height distribution under a strong magnetic field of B≤1 T , and provided σ TTS =100 ps of transit time spread (TTS) and 85% of photoelectron detection efficiency.

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