Abstract
We describe a proposed upgrade to the indirect-geometry broad-band chemical spectrometer TOSCA at the ISIS Neutron and Muon Source, UK. By replacing the secondary spectrometer of the instrument, we expect a gain in detected intensity of an order of magnitude, improved spectral resolution over the entire energy range of the instrument and an improved signal-to-noise ratio. The new secondary spectrometer consists of 14 analyser modules, each constituted of a large, curved pyrolytic graphite analyser, a beryllium filter and a position-sensitive detector system. We present the prospective design and expected performance of the new analyser module as calculated from ray-tracing simulations. The improved performance will develop the instrument capabilities to tackle new and challenging experiments and ensure that TOSCA remains highly competitive in the years to come.
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Schedule a callMore From: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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