Describes an automatic Q measurement system (Q=f/sub betatron//f/sub revolution/) which was developed and installed at the 28 GeV Proton Synchrotron of CERN. At the desired moment the beam is excited to 1 mm betatron oscillations by means of a programmed full aperture air kicker. The frequency spectrum which appears at a beam position pick- up station contains the non integer part of the Q value as the lowest frequency. A voltage controlled RC filter scans the pick-up signal spectrum. When the lowest frequency of the spectrum is attained, a feedback loop switches the filter to a constant frequency. The ratio measurement (normalization to the revolution frequency) is performed by counting the doubled acceleration frequency during 10 periods of the filter output frequency. The counter output is fed to a computer which displays after data handling the Q value on an alphanumeric cathode ray tube. (6 refs).
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机译：描述了一个自动Q测量系统（Q = f / sub betatron // f / sub Revolution /），该系统已开发并安装在CERN的28 GeV质子同步加速器上。在所需的时刻，通过编程的全孔径空气喷射器将光束激发到1 mm的电子加速器振荡。出现在波束位置拾取站的频谱包含Q值的非整数部分，作为最低频率。压控RC滤波器扫描拾取信号频谱。当达到频谱的最低频率时，反馈环路将滤波器切换到恒定频率。通过对滤波器输出频率的10个周期内加倍的加速频率进行计数来执行比率测量（对转速进行归一化）。计数器的输出被馈送到计算机，在对数据进行处理之后，该计算机在字母数字阴极射线管上显示Q值。 （6个参考）。
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