Performance test of half-wave resonator (HWR) superconducting cavities

IF 0.8 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

Journal of the Korean Physical Society Pub Date : 2024-05-15 DOI:10.1007/s40042-024-01084-w

Heetae Kim, Sungmin Jeon, Juwan Kim, Yoochul Jung

引用次数: 0

Abstract

The evaluation of half-wave resonator (HWR) cavity performance is presented in this study. We demonstrate the time-dependent characteristics of the fast cool-down process, as well as the RF conditioning and measurement procedures, including input power, reflected power, and transmitted power. Measurements encompass quality factor, resonance frequency, Lorentz force detuning (LFD), pressure sensitivity, and surface resistance for the HWR cavities. Furthermore, we determine Q slopes at temperatures of 4.2 K and 2 K for these cavities. Utilizing the Q slope data, we calculate the BCS resistance and estimate the bandgap for the Nb HWR cavity.

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半波谐振器（HWR）超导腔性能测试

本研究介绍了对半波谐振器（HWR）腔体性能的评估。我们展示了快速冷却过程随时间变化的特性，以及射频调节和测量程序，包括输入功率、反射功率和传输功率。测量包括 HWR 腔体的品质因数、共振频率、洛伦兹力失谐 (LFD)、压力灵敏度和表面电阻。此外，我们还确定了这些空腔在 4.2 K 和 2 K 温度下的 Q 值斜率。利用 Q 斜率数据，我们计算了铌 HWR 腔的 BCS 电阻并估算了带隙。

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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来源期刊

Journal of the Korean Physical Society PHYSICS, MULTIDISCIPLINARY-

CiteScore

1.20

自引率

16.70%

发文量

276

审稿时长

5.5 months

期刊介绍： The Journal of the Korean Physical Society (JKPS) covers all fields of physics spanning from statistical physics and condensed matter physics to particle physics. The manuscript to be published in JKPS is required to hold the originality, significance, and recent completeness. The journal is composed of Full paper, Letters, and Brief sections. In addition, featured articles with outstanding results are selected by the Editorial board and introduced in the online version. For emphasis on aspect of international journal, several world-distinguished researchers join the Editorial board. High quality of papers may be express-published when it is recommended or requested.