Abstract
Full-length SSC R&D dipole magnets instrumented with four voltage taps on each turn of the inner quarter coils have been tested. These voltage taps enable (1) accurate location of the point at which the quenches start and (2) detailed studies of quench development in the coil. Attention here is focused on localizing the quench source. After recalling the basic mechanism of a quench (why it occurs and how it propagates), the method of quench origin analysis is described: the quench propagation velocity on the turn where the quench occurs is calculated, and the quench location is then verified by reiterating the analysis on the adjacent turns. Last, the velocity value, which appears to be higher than previously measured, is discussed.
Operated by the Universities Research Association, Inc., for the United States Department of Energy.
Work supported by the Office of Energy Research, Office of High-Energy Physics, High-Energy Physics Division, Department of Energy under Contract No. DE-AC03-76SF00098.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
W. R. Cherry and J. R. Gittleman, “Thermal and electrodynamic aspects of the superconductive transition process,” Solid State Electron, 1,p.287,1960.
R. F. Broom and E. H. Rhoderick, “Thermal propagation of a normal region in a thin superconducting film and its application to a new type of bistable element” Br. J. Appl. Phys., 11, p. 292,1960.
A. Devred, “General formulas for the adiabatic propagation velocity of the normal zone”, IEEE Trans. Magn., MAG-25 No. 2, p. 1698,1989.
N. K. Wilson, Superconducting Magnets,Oxford, Clarendon Press, p. 204,1983.
J. Peoples, et al., “Status of the SSC superconducting magnet program”, IEEE Trans. Magn., MAG-25 No. 2, p. 1444,1989.
J. Strait, et al., “Test of full scale SSC R&D dipole magnets”, IEEE Trans. Magn., MAG-25 No. 2, p. 1455,1989.
J. Tompkins, et al., “Performance of full length SSC model dipoles: results from 1988 tests”, presented at the First International Industrialization of the SSC Conference, New Orleans, Louisiana, February 8–10, 1989, in these Proceedings.
J. Strait , et al., “Fermilab R&D test facility for SSC magnets”, presented at the First International Industrialization of the SSC Conference, New Orleans, Louisiana, February 8–10, 1989, in these Proceedings.
P. Mazur and T. Paterson, “A cryogenic test stand for full length SSC magnets with superfluid capability”, presented at the First International Industrialization of the SSC Conference, New Orleans, Louisiana, February 8–10, 1989, in these Proceedings.
G. Ganetis and A. Prodell, “Results from heater-induced quenches of a 4.5 m reference design D dipole for the SSC”, IEEE Trans. Magn., MAG-23 No. 2, p. 495, 1987.
W. Hassenzahl, “Heater-induced quenches in SSC model dipoles”, IEEE Trans. Magn., “MAG-23 No. 2”, p. 934,1987.
C. Luongo, et al., “Thermal-hydraulic simulation of helium expulsion from a cable- in-conduit conductor”, IEEE Trans. Magn., MAG-25 No. 2, p. 1589,1989.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1989 Plenum Press, New York
About this chapter
Cite this chapter
Devred, A. et al. (1989). Quench Start Localization in Full-Length SSC R&D Dipoles. In: McAshan, M. (eds) Supercollider 1. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-0841-6_8
Download citation
DOI: https://doi.org/10.1007/978-1-4613-0841-6_8
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4612-8109-2
Online ISBN: 978-1-4613-0841-6
eBook Packages: Springer Book Archive