Community Research and Development Information Service - CORDIS


A telescope was developed and tested at the 7 MeV-300ps burst-width Van de Graaff accelerator. It is specific and redundant in its particle identification. The telescope is made of two multiwire parallel-plate avalanche counters, providing energy-loss and time, and a hexagonal pilot-U scintillator, viewed by two photomultipliers, providing time and energy. By measuring the ratio of amplitudes on opposite sides of the scintillator, and by applying an on-line time and pulse-height correction procedure, the time-resolution of the pilot-U scintillator reduces to 300 ps and the pulse-height resolution is reduced from 35% to 28%. Two-dimensional spectra of dE versus E, and E versus time-of-flight are shown for 241Am and for samples of Ni and Ta, irradiated by 8.0 MeV neutrons. By selecting areas in these two-dimensional spectra, particle energy spectra with outstanding foreground to background ratio and reasonable statistical accuracy in short acquisition times are deduced.

Additional information

Authors: WATTECAMPS E, JRC Geel (BE);ROLLIN G, JRC Geel (BE);KETERS M, Industriele Hogeschool van het Rijk, Hasselt (BE)
Bibliographic Reference: Paper presented: International Conference on Nuclear Data for Science and Technology, Jülich (DE), May 13-17, 1991
Availability: Available from (1) as Paper EN 36149 ORA
Record Number: 199110846 / Last updated on: 1994-12-02
Original language: en
Available languages: en