Error analysis of vertical test for CEPC 650 MHz superconducting radio-frequency cavity

arXiv - PHYS - Accelerator Physics Pub Date : 2024-06-09 DOI:arxiv-2406.05715

Lingxi Ye, Peng Sha, Zhenghui Mi, Feisi He, Jiyuan Zhai

引用次数: 0

Abstract

Hundreds of 650 MHz superconducting radio-frequency (SRF) cavities with high intrinsic quality factor (Q0) and accelerating gradient (Eacc) will be adopted for Circular Electron Positron Collider (CEPC). The values of Q0 and Eacc are obtained during vertical test at 2.0 K. Hence, high accuracy of vertical test is essential for evaluating the performance of SRF cavity. The 650 MHz SRF cavities achieved very high Q0 (6E10) and Eacc (40 MV/m) during the vertical test. In our study, the error analysis of vertical test was conducted in the scalar case, in order to achieve high accuracy. The uncertainties of vertical test were obtained through calculation, which was approximately 3% for Eacc and less than 5% for Q0. This result was reasonable and acceptable.

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CEPC 650 MHz 超导射频腔垂直测试误差分析

数百个具有高内在品质因数（Q0）和加速梯度（Eacc）的 650 MHz 超导射频（SRF）腔将用于环形电子正负电子对撞机（CEPC）。Q0 和 Eacc 的值是在 2.0 K 垂直测试中获得的。因此，高精度的垂直测试对于评估 SRF 腔的性能至关重要。在垂直测试中，650 MHz SRF 腔达到了非常高的 Q0（6E10）和 Eacc（40 MV/m）。在我们的研究中，垂直测试的误差分析是在垂直情况下进行的，以达到较高的精度。通过计算得到了垂直测试的不确定度，Eacc 约为 3%，Q0 小于 5%。这一结果是合理和可以接受的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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arXiv - PHYS - Accelerator Physics

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