Importance

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Abstract

An embodiment of the present invention includes the use of a single connection to measure the resonance frequency of main cells or side cells of a resonant structure, such as a linear accelerator cavity structure. Only one antenna is require to perform both the tasks of exciting a cavity structure and picking up the resonant frequency signal. According to an embodiment of the present invention, a first antenna probe is inserted into the main cells of a linear accelerator cavity structure. The first antenna probe includes an antenna window which may be positioned approximately in the center of a main cell adjacent to a target side cell in order to measure the resonance frequency of a target side cell. All non-target side cells adjacent to the main cell aligned with the window antenna are then shorted. For example, the non-target cells may be shorted by metal surrounding the first antenna probe at locations other than the antenna window. A signal is sent and a resonance frequency is noted. In order to measure the resonance frequency of a target main cell according to an embodiment of the present invention, a second antenna probe is inserted into a side cell adjacent to the target main cell. The main cells adjacent to the target main cell are then shorted and side cells adjacent to the target main cell are also shorted. A signal is sent and the resonance frequency of the target main cell is then measured.

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First Claim