Transport tests of the St. Benedict first-stage extraction system
Transport tests of the St. Benedict first-stage extraction system
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DOI：
10.1016/j.nima.2022.166509
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发表时间：
2022-03
期刊：
影响因子：
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通讯作者：
C. Davis;O. Bruce;D. Burdette;T. Florenzo;B. Liu;J. Long;P. O'malley;M. Yeck;M. Brodeur
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文献类型：
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作者：
C. Davis;O. Bruce;D. Burdette;T. Florenzo;B. Liu;J. Long;P. O'malley;M. Yeck;M. Brodeur
超允许跃迁BEta中微子衰变离子符合阱（圣本尼迪克特）的目的是通过确定许多镜像跃迁的费米-伽莫夫-泰勒混合比来进行标准模型的精确测试。圣本尼迪克特将包括一个气室，一个差分泵浦提取系统，一个射频（RF）冷却器和聚束器，以及一个保罗陷阱的测量将发生。提取系统将包括第一部分，其容纳在约3 mbar的压力下的RF毯，随后是第二部分，其容纳在2× 10 − 3 mbar的压力下的射频四极（RF）离子导向器。在优化施加到各种电极的电势之后，使用离子冲浪方法确定在静态气体中使用RF地毯的钾离子的传输效率在90%以上。
Abstract The Superallowed Transition BEta NEutrino Decay Ion Coincidence Trap (St. Benedict) aims to conduct precision tests of the standard model by allowing for a determination of the Fermi to Gamow–Teller mixing ratio for many mirror transitions. St. Benedict will include a gas cell, a differentially-pumped extraction system, a radio-frequency (RF) cooler and buncher, and a Paul trap where the measurement will take place. The extraction system will include a first section housing a RF carpet at a pressure of around 3 mbar, followed by a second section housing a radio-frequency quadrupole (RFQ) ion guide at a pressure of 2× 1 0− 3 mbar. Transport efficiency of potassium ions using the RF carpet in static gas was determined to be above 90% using the ion surfing method after optimizing the potentials applied to various electrodes.