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  Izaola, Z.; Russina, M.: Virtual design of the neutron guide for the TOF spectrometer NEAT. Journal of Physics: Conference Series 251 (2010), p. 012064/1-4

10.1088/1742-6596/251/1/012064

Abstract:
We present the results of a virtual design study based on Monte-Carlo neutron ray tracing techniques for the neutron guide of the time of ight (TOF) spectrometer NEAT. We studied several congurations with linearly or elliptically tapered compressors with dierent degrees of focusing and dierent guide coatings. The calculations were performed and cross- checked using two software packages which produced similar results. The geometrical arrangement of selected guide components was optimised with the Particle Swarm Optimisation algorithm. The results of the Monte Carlo simulations conrm an expected intensity gain factor of approximately 5, that can be achieved by the optimal conguration