射频分离器偏转模腔的设计与测量

PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268) Pub Date : 2001-07-09 DOI:10.1109/PAC.2001.986583

L. Bellantoni, H. Edwards, M. Mcashan, Il Batavia, R. wanzenberg

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引用次数: 12

摘要

费米实验室主注入器可以产生120 GeV/c的强质子束，用于固定目标实验。两个偏转模式射频系统可以利用飞行时间法从由介子、介子和质子组成的动量选择二次光束中分离出带电的介子。我们提出了3.9 GHz偏转(TM110) pi模式下的超导腔的射频设计，并通过有限差分计算确定了射频参数与腔形的依赖关系。端细胞补偿已处理，提供细胞到细胞的场平面。在原型腔体上测量的第一个结果显示。我们证明，这是可能的调整偏转模式的五细胞腔与头拉测量。讨论了与模偏振有关的效应。

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Design and measurements of a deflecting mode cavity for an RF separator

The Fermilab Main Injector can produce intense 120 GeV/c proton beams for fixed target experimentation. Two deflecting mode RF systems can be used to separate charged kaons from a momentum selected secondary beam, consisting of pions, kaons and protons, using a time of flight method. We present the RF design of a 3.9 GHz superconducting cavity which operates in the deflecting (TM110) pi-mode and the dependence of the RF parameters on the cavity shape, as determined with finite difference calculations. End cell compensation has been treated, providing cell-to-cell field flatness. First results from measurements on a prototype cavity are shown. We demonstrated that it is possible to tune the deflecting mode of a five cell cavity with bead pull measurements. Effects relating to the polarization of the modes are discussed.

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PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268)

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