TOSCA - A WORLD-CLASS INELASTIC NEUTRON SPECTROMETER

Present applications are reaching the limitations of the inelastic neu tron scattering spectrometer, TFXA at ISIS. The new instrument TOSCA, currently under construction, builds on the strengths of TFXA (a wide energy range, good resolution and ease of operation!, but will have de tector banks in forward and backward directions to give a much larger detector area. A longer primary flight path of 17 m will result in a s ignificant improvement in resolution. The open geometry in forward sca ttering allows a larger range of momentum transfers to be accessed. TO SCA will have a diffraction capability with detectors at a range of an gles to provide a good coverage of Q-space and d-plane spacing. (C) 19 98 Elsevier Science B.V. All rights reserved.