A double arm time-of-flight spectrometer based on position-sensitive parallel-grid avalanche counters

A double arm time-of-flight spectrometer, built-up at the Laboratory of Nuclear Reactions JINR, intended to register and study the characteristics of fission-like products produced in heavy-ion reactions with complex nuclei are presented. The basis part of spectrometer are two identical mobile position-sensitive time-of-flight arms. Each arm consists of a parallel-plate avalanche 'start' counter and of position-sensitive, large area parallel-grid avalanche 'stop' counters. The spectrometer is mounted on a beam-line of the U-400 heavy-ion accelerator.