Lingxi Ye, Peng Sha, Zhenghui Mi, Feisi He, Jiyuan Zhai
{"title":"Error Analysis of Vertical Test for CEPC 650 MHz Superconducting Radio-frequency Cavity","authors":"Lingxi Ye, Peng Sha, Zhenghui Mi, Feisi He, Jiyuan Zhai","doi":"10.1134/S002044122470088X","DOIUrl":null,"url":null,"abstract":"<p>Hundreds of 650 MHz superconducting radio-frequency (SRF) cavities with high intrinsic quality factor (<i>Q</i><sub>0</sub>) and accelerating gradient (<i>E</i><sub>acc</sub>) will be adopted for Circular Electron Positron Collider (CEPC). The values of <i>Q</i><sub>0</sub> and <i>E</i><sub>acc</sub> 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 <i>Q</i><sub>0</sub> (6 <i>×</i> 10<sup>10</sup>) and <i>E</i><sub>acc</sub> (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 <i>E</i><sub>acc</sub> and less than 5% for <i>Q</i><sub>0</sub>. This result was reasonable and acceptable.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"67 4","pages":"735 - 741"},"PeriodicalIF":0.4000,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Instruments and Experimental Techniques","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1134/S002044122470088X","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, MULTIDISCIPLINARY","Score":null,"Total":0}
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 (6 × 1010) 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.
期刊介绍：
Instruments and Experimental Techniques is an international peer reviewed journal that publishes reviews describing advanced methods for physical measurements and techniques and original articles that present techniques for physical measurements, principles of operation, design, methods of application, and analysis of the operation of physical instruments used in all fields of experimental physics and when conducting measurements using physical methods and instruments in astronomy, natural sciences, chemistry, biology, medicine, and ecology.
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