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arXiv · 1007.5184

Dark Current Measurements on a Superconducting Cavity using a Cryogenic Current Comparator

R. Geithner·R. Neubert·W. Vodel·P. Seidel·K. Knaack·S. Vilcins·K. Wittenburg·O. Kugeler·J. Knobloch
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Abstract

This paper presents non-destructive dark current measurements of superconducting TESLA cavities for superconducting LINACs. The measurements were carried out in a highly disturbed accelerator environment using a low temperature superconducting d.c. SQUID based Cryogenic Current Comparator (CCC). The overall current sensitivity under these rough conditions was measured to be 0.2 nA/sqrt(Hz) which enables the detection of dark currents of 5 nA.

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R. Geithner, R. Neubert, W. Vodel, P. Seidel, K. Knaack, S. Vilcins, K. Wittenburg, O. Kugeler, J. Knobloch. 2010-07-29. Dark Current Measurements on a Superconducting Cavity using a Cryogenic Current Comparator. https://doi.org/10.1063/1.3527063

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