TUNING AND STABILIZATION OF RFQ'S'
TUNING AND STABILIZATION OF RFQ'S'
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发表时间：
1990
期刊：
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通讯作者：
L. Young
中科院分区：
文献类型：
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作者：
L. Young
介绍了射频四极天线调谐和稳定的最新进展。现在可以建立和调谐四倍于自由空间波长、要求场平坦度为百分之几和偶极分量小于百分之几的新设计的RFQ。通过在每个象限中测量具有微珠拉力的微扰场并使用计算机程序（RFQPERT）分析微珠拉力数据来执行调谐。该程序计算一组扰动到一个理想的模式，将混合在附近的模式，以给出测量的领域。然后使用段塞调谐器来消除真实的振荡器中的计算出的扰动，以获得期望的纯振荡器模式。还将讨论用于稳定RFQ中的场的几种方法的优缺点。
Recent advances in tuning and stabilization of Radio Frequency Quadrupoles (RFQ) will be presented. New designs of RFQs as long as four times the free-space wavelength and requiring field flatness of a few percent and less than a few percent dipole component can now be built and tuned. The tuning is performed by measuring the RFQ fields with a beadpull in each quadrant and using a computer program, (RFQPERT) to analyze the beadpull data. The program calculates a set of perturbations to an ideal RFQ that would mix in nearby modes to give the measured fields. Slug tuners are then used to cancel the calculated perturbation in the real RFQ to get the desired pure RFQ mode. The pros and cons of several methods that have been used to stabilize the field in RFQs will also be discussed.