Abstract
The degradation of the surface impedanceZ = R + iX with rf power is a principal limit for measurements and applications. Such nonlinearities occur for normal conducting cavities by heating or electron loading. But superconductors show a much richer spectrum of causes for nonlinearities. The nonlinearities in the surface resistance δR ∞ γ H n and surface reactance δR ∞ α H n can be classified by the ratior = δX/δ R. This ratio differs in value, temperature, or frequency dependence for the different mechanisms, allowing a unique identification of those mechanisms. This identification is a prerequisite for an improved rf cavity design and improvement of superconducting materials.
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References
W. D. Kilpatrick,Rev. Sci. Instrum. 28, 824 (1957); J. P. Budliger and A. Laisne,Nucl. Instrum. Methods 61, 253 (1968).
Chaudra Kudsia and Wai-Cheung Tang,IEEE Trans. Microwave Theory Tech. 40, 1133 (1992).
A. J. Halbritter,J. Appl. Phys. 41, 4581 (1970); b. J. Halbritter,Particle Accelerators 3, 163 (1972); P. Kneiselet al., J. Appl. Phys. 44, 1785 (1972).
M. Tinkham,Introduction to Superconductivity (McGraw-Hill, New York, 1995).
A. J. Halbritter,J. Appl. Phys. 68, 6315 (1990) and71, 339 (1992); b. J. Halbritter.J. Supercond. 8, 691 (1995).
Sh. Noguchi, Y. Kojima, and J. Halbritter.Nucl. Instrum. Methods 179, 205 (1981).
P. P. Nguyen, et al.,Phys. Rev. B 51, 6686 (1995); S. Sridhar,Appl. Phys. Lett. 65, 1054 (1994).
J. Clem, this volume.
A. Gurevitch,Phys. Rev. B 48, 12857 (1993) andB 50, 13563 (1994).
D. Oateset al., Appl. Phys. Lett. 68, 705 (1996); M. Perpeetet al., Int. Phys. Conf. Ser. No. 148 (IOP Publ., 1995), p. 1225.
J. Herd, ASC-IEEE Trans. Appl.Superconductivity 7 (1997).
J. Wosik,et al., ASC-IEEE Trans. Appl.Superconductivity 7 (1997); J. Halbritter, Proc. 1972 Appl. Supercond. Conf. Annapolis, 1972 (IEEE, N.Y. 1972), p.662.
P. Kneisel,J. Vac. Sci. Technol. A 111, 1575 (1993).
J. Halbritter,IEEE Trans. El-18, 253 (1983) and El-20,671 (1985);Appl. Phys. A 39, 49 (1986).
D. Bloess, ASC-IEEE Trans. Appl.Superconductivity 7 (1997).
A. Andreone et al.,J. Appl. Phys. 73, 4500 (1993) and78, 1862 (1995); Proc. 7th Workshop on Rf-Superconductivity; Oct. 1995, Saclay (IN2P3, Saclay, 1996), p.535; ASC (1996).
A. Andreone, et al.,Inst. Phys. Conf. Ser. 148, (IOP Publ. 1995), p. 1115 and private communication.
N. Belk et al.,Phys. Rev. B 53, 3459 (1996), to be published and private communication.
M. Golosovski, et al.,Phys. Rev. B 51, 6462 (1995).
P. P. Nguyen et al.,Phys. Rev. B 48, 6400 (1993).
J. Halbritter, ASC-IEEE Trans. Appl.Superconductivity 1 (1997).
T. Jacobs,et al., ASC-IEEE Trans. Appl.Superconductivity 1 (1997).
J. Halbritter,Phys. Rev. B 46, 13861 (1992) andJ. Appl. Phys. 58, 1329 (1985).
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Halbritter, J. Nonlinear surface impedance in “low” and “high”T c superconductors. J Supercond 10, 91–96 (1997). https://doi.org/10.1007/BF02763178
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DOI: https://doi.org/10.1007/BF02763178