Installation of the high resolution TOF diffractometer at the Budapest Research Reactor

Abstract

The new TOF project started in 2000 in collaboration with the Hahn-Meitner- Institut. The spectrometer - previously tested on a cold beam - has been reinstalled to a radial thermal neutron beam at the Budapest Research Reactor. The TOF monochromator system consist of a double chopper with maximum rotation speed of 12000 rpm and the two single ones with 6000 rpm. The instrument will operate with a 2-dimensional detector of 80x100cm 2 in back scattering geometry, now He 3 tubes are used. The first test measurements we are presenting here show that the expected resolution Δd/d ~ 4x10 -4 can be achieved.