A COMPACT PARALLEL-PLATE DETECTOR FOR HEAVY-ION REACTION STUDIES

A two dimensional position sensitive parallel plate detector, with an active area of 10 X 8 cm(2), was developed for heavy ion reaction stud ies. Position signals are extracted by using a non-standard compact de lay-line, which allows saving dead spaces. The timing (less than or eq ual to 280 ps) and position (1 mm in X, Y) resolutions of the detector make it a useful device for kinematic coincidence studies. Moreover, due to its mechanical construction, it is well suited for the implemen tation of a 4 pi structure to be built e.g. in the inner space of a Ge -array.