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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Control of electromagnetic properties during prototyping, fabrication and operation of low-beta 325 MHz half-wave resonators
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Control of electromagnetic properties during prototyping, fabrication and operation of low-beta 325 MHz half-wave resonators

机译:低β325MHz半波谐振器的原型化,制造和操作期间的电磁特性控制

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摘要

The general steps for the fabrication of a copper prototype of 325 MHz coaxial half-wave resonator (HWR) with beta = 0.21 are presented and discussed in this work. The main features for the control of the electromagnetic properties during the manufacturing process of HWR are described in detail. The resonant frequency sensitivity to the accelerating gap and to the cavity height were experimentally estimated. Bead-pull measurements were performed and the electric field distribution along the beam axis of the manufactured cavity was estimated. The features of the cavity's response in the critical coupling regime are analyzed. The experimental concept of a slow frequency tuning system (FTS) based on the moving plungers is proposed and tested. The tuning sensibility is experimentally estimated. The measured results agree with the simulations quite well, and the sensitivity for a single plunger configuration Delta f/Delta L = +13 kHz mm(-1) is achieved. The dynamic properties and operation algorithm of the FTS are studied and experimentally investigated.
机译:本文介绍并讨论了制作β=0.21的325 MHz同轴半波谐振器(HWR)铜原型的一般步骤。文中详细介绍了HWR制造过程中电磁特性控制的主要特点。实验估算了谐振频率对加速间隙和腔高的灵敏度。进行了胎圈拉力测量,并估计了沿制造腔体束轴的电场分布。分析了谐振腔在临界耦合区的响应特征。提出并测试了一种基于动柱塞的低频调谐系统(FTS)的实验概念。对调谐灵敏度进行了实验估算。测量结果与模拟结果吻合得很好,单柱塞配置的灵敏度δf/δL=+13 kHz mm(-1)。对FTS的动态特性和运行算法进行了研究和实验研究。

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