Geithner, R.; Neubert, R.; Vodel, W.; Seidel, P.; Knaack, K.; Vilcins, S.; Wittenburg, K.; Kugeler, O.; Knobloch, J. : Dark current measurements on a superconducting cavity using a cryogenic current comparator. Review of Scientific Instruments 82 (2011), p. 013302/1-5
10.1063/1.3527063
Abstract:
This paper presents nondestructive dark current measurements of tera electron volt energy superconducting linear accelerator cavities. The measurements were carried out in an extremely noisy accelerator environment using a low temperature dc superconducting quantum interference device based cryogenic current comparator. The overall current sensitivity under these rough conditions was measured to be 0.2 nA/Hz1/2, which enables the detection of dark currents of 5 nA. © 2011 American Institute of Physics. [doi:10.1063/1.3527063]