A study of mechanical and magnetic issues for a prototype positron source target.

Bailey, I. R. and Clarke, D. G. and Clarke, J. A. and Davies, K. P. and Gallagher, A. J. and Gronberg, J. and Hagler, L. and Hesselbach, S. and Jenner, L. J. and Nelson, C. J. and Piggott, T. and Rochford, J. H. (2008) A study of mechanical and magnetic issues for a prototype positron source target. In: 11th European Particle Accelerator Conference, 2008-06-232008-06-27, Magazzini del Cotone.

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In order to construct a high yield, positron source that can meet the intensity requirements of future facilities, a robust conversion target is needed. One solution is to use a rotating titanium alloy wheel upon which a beam of photons is incident. The efficiency of capturing the resulting positrons can be optimised by immersing this system in a magnetic field. As described elsewhere, a prototype of such a target has been built at Daresbury Laboratory, to investigate the mechanical challenges associated with its construction and to study the magnetic effects that the wheel will experience. In this paper, predictions of the eddy current power losses in the target prototype obtained from magnetic modelling simulations are presented, and an initial analysis of the thermal shocks that the ILC target wheel is expected to experience due to beam loading during operation is described.

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Contribution to Conference (Paper)
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11th European Particle Accelerator Conference
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14 Dec 2010 16:33
Last Modified:
21 Sep 2023 04:13