Time-sorter for use in the nanosecond range

Abstract

The paper presents the design of a time-to-amplitude conversion circuit employing delayed fast coincidence techniques for use in the nanosecond region. This circuit has a linear time calibration over the range 1 to 10 ns, a resolution time of less than 0.05 ns and a variation of time calibration less than 0.03 ns per day is achieved. A resolution time of 0.8 ns was found when detecting coincidence between γ-rays from a ⁶⁰Co source.