摘要
The RF performance of a 1.3 GHz 9-cell superconducting niobium cavity was evaluated at cryogenic temperatures following surface processing by using the standard ILC-style recipe. The cavity is a TESLA-style 9-cell superconducting niobium cavity, with complete end group components including a higher order mode coupler, built in China for practical applications. An accelerating gradient of 28.6 MV/m was achieved at an unloaded quality factor of 4× 109. The morphological property of mechanical features on the RF surface of this cavity was characterized through optical inspection the RF performance of the cavity is attempted. Correlation between the observed mechanical features and
The RF performance of a 1.3 GHz 9-cell superconducting niobium cavity was evaluated at cryogenic temperatures following surface processing by using the standard ILC-style recipe. The cavity is a TESLA-style 9-cell superconducting niobium cavity, with complete end group components including a higher order mode coupler, built in China for practical applications. An accelerating gradient of 28.6 MV/m was achieved at an unloaded quality factor of 4× 109. The morphological property of mechanical features on the RF surface of this cavity was characterized through optical inspection the RF performance of the cavity is attempted. Correlation between the observed mechanical features and
基金
Supported by Major State Basic Research Development Program of China (973 Program)
