Design activities, conductor R&D and model coil construction are under way for the development of a curved superconducting dipole for the fast cycled SIS300 synchrotron at FAIR at GSI. The main target is the construction within 2009 of a half-length model magnet (cold mass fully integrated in a horizontal cryostat). This magnet is designed for a maximum central field of 4.5 T in a bore of 100 mm, with a ramp rate of 1 T/s. The magnetic length of the model is 3.9 m with a curvature radius of 66.67 m (27 mm of sagitta). This paper describes the thermal analysis of the magnet, based on the estimated values of the losses in the cold mass. The study has been performed with 2-D finite element codes, both in steady state and transient analysis. The study has been completed with measurements of overall thermal exchange coefficient between the kapton-insulated cables and the supercritical helium, in order to validate the adopted assumptions about the material thermal properties.
Thermal analysis of the FAIR SIS300 model dipole / M. Sorbi, F. Alessandria, G. Bellomo, P. Fabbricatore, S. Farinon, U. Gambardella, R. Musenich, G. Volpini - In: Transactions of the cryogenic engineering conference : Tucson, Arizona, 28 June–2 July 2009 / [a cura di] J. G. Weisend. - [s.l] : AIP, 2010. - ISBN 978-0-7354-0761-9. - pp. 981-988 (( convegno Cryogenic engeenering conference tenutosi a Tucson, Arizona, USA nel 2009 [10.1063/1.3422469].
Thermal analysis of the FAIR SIS300 model dipole
M. SorbiPrimo
;G. Bellomo;
2010
Abstract
Design activities, conductor R&D and model coil construction are under way for the development of a curved superconducting dipole for the fast cycled SIS300 synchrotron at FAIR at GSI. The main target is the construction within 2009 of a half-length model magnet (cold mass fully integrated in a horizontal cryostat). This magnet is designed for a maximum central field of 4.5 T in a bore of 100 mm, with a ramp rate of 1 T/s. The magnetic length of the model is 3.9 m with a curvature radius of 66.67 m (27 mm of sagitta). This paper describes the thermal analysis of the magnet, based on the estimated values of the losses in the cold mass. The study has been performed with 2-D finite element codes, both in steady state and transient analysis. The study has been completed with measurements of overall thermal exchange coefficient between the kapton-insulated cables and the supercritical helium, in order to validate the adopted assumptions about the material thermal properties.
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