A Medium Fast Time-of-Flight Front End

A medium fast time-of-flight front end for use with an on-line computer is described. Principal features of this unit are: (1) 31.25 nsec minimum channel width. (2) 1 μsec minimum deadtime. (3) Controllable deadtime (for synchronization purposes). (4) 3 stage output derandomization buffer. (5) Simple low cost construction almost entirely of commercially available computer logic. (6) Crystal clock for stability. (7) Output pulse for clock synchronized accelerator triggering. (8) 220 channels available (1,048,576). (9) 3 tag bits for data identification. (10) Deadtime, clock livetime and lost data outputs.