Chinese Physics C > 1996, Vol. 20 > Issue(7): 663-672

The Measurement Principle of RF Superconducting Nb Cavity

Zu Donglin^,,
Chen Jiaer

Institute of Heavy Ion Physics, Peking Unviversity, Beijing 100871

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Abstract：
This paper describes the measurement principle and methods of RF superconducting Nb cavity according to the energy conservation. It suggests that there are differences in measuring methods between high power and low power cavities due to electron field emission(FE) existing in superconducting Nb cavities. A set of exact formulae and equations on physics parameters of superconducting Nb cavities has been systematically derived, such as quality factor Q ₀without loads, the maximum of the surface electrical field intensity Esp, the maximum of the accelerating gradient Eacc, etc.

References

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Zu Donglin and Chen Jiaer. The Measurement Principle of RF Superconducting Nb Cavity[J]. Chinese Physics C, 1996, 20(7): 663-672.

Zu Donglin and Chen Jiaer. The Measurement Principle of RF Superconducting Nb Cavity[J]. Chinese Physics C, 1996, 20(7): 663-672. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

The Measurement Principle of RF Superconducting Nb Cavity

Zu Donglin^,
Chen Jiaer

Corresponding author:Zu Donglin,

Institute of Heavy Ion Physics, Peking Unviversity, Beijing 100871

Received Date:1900-01-01
Accepted Date:1900-01-01
Available Online:1996-07-05

Abstract:This paper describes the measurement principle and methods of RF superconducting Nb cavity according to the energy conservation. It suggests that there are differences in measuring methods between high power and low power cavities due to electron field emission(FE) existing in superconducting Nb cavities. A set of exact formulae and equations on physics parameters of superconducting Nb cavities has been systematically derived, such as quality factorQ₀without loads, the maximum of the surface electrical field intensity Esp, the maximum of the accelerating gradient Eacc, etc.