The Braunschweig accelerator facility for fast neutron research: 1: Building design and accelerators

Abstract

A 3.75 MeV Van de Graaff generator and an energy variable isochronous cyclotron are used to produce “monoenergetic” neutrons with continuously variable energy between about 10 keV and 31.5 MeV. Both accelerators can be operated in a nanosecond pulsed beam mode, as needed for time-of-flight spectroscopy. Experiments can be performed in a low backscatter experimental hall. A heavy collimator system with five flight paths is mounted in a fixed position on the ground floor. The compact cyclotron is positioned on a swivel arm and can be moved for angular distribution measurements.