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

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

arxiv: 1007.5184 · v1 · pith:5EUQWDCRnew · submitted 2010-07-29 · ⚛️ physics.ins-det

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

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J. Knobloch

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keywords currentsuperconductingdarkmeasurementscomparatorcryogenicacceleratorcarried

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

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