The Texas A&M University Penning Trap (TAMUTRAP) facility aims to test the standard model of the electroweak interaction by measuring the β-ν correlation parameter, a_βν, for β-delayed proton emitters in the atomic mass range 20 < A < 40. Precision measurements of this correlation parameter and, inextricably, the Fierz interference parameter, are a sensitive probe of physics beyond the standard model. Using off-line ion sources, the TAMUTRAP facility has been commissioned by demonstrating the ability to manipulate the trapped-ion motions as well as to perform precision mass measurements. Our novel cylindrical Penning trap – the world's largest – differs from typical designs in two key aspects: the electrode structure has an 180-mm inner diameter and an overall length of 334.89 mm leading to a uniquely small length/radius ratio l/r = 3.72; and we do not use the long end cap approximation, instead our short endcap electrodes are closed and capable of being placed at an arbitrary potential. This geometry is optimized for observing β-delayed proton decays, but is also well suited for other in-trap and post-trap precision decay experiments. In addition to presenting an overview of the TAMUTRAP facility, we demonstrate that our unique Penning trap is able to measure masses with a precision similar to typical trap designs.

所述得克萨斯州A与M大学潘宁陷阱（TAMUTRAP）设施旨在通过测量测试弱电相互作用的标准模型βν相关性参数，一个_βν，对于β的原子质量范围20 <-delayed质子发射器 甲 < 40. 该相关参数的精确测量以及不可分割的 Fierz 干涉参数是超出标准模型的物理敏感探针。使用离线离子源，TAMUTRAP 设施已通过展示操纵俘获离子运动以及执行精确质量测量的能力而投入使用。我们的新型圆柱形 Penning 阱 - 世界上最大的 - 在两个关键方面与典型设计不同：电极结构的内径为 180 毫米，总长度为 334.89 毫米，因此具有独特的小长度/半径比l / r = 3.72; 并且我们不使用长端帽近似，相反，我们的短端帽电极是封闭的并且能够放置在任意电位。这种几何结构针对观察β延迟质子衰变进行了优化，但也非常适合其他陷阱内和陷阱后精密衰减实验。除了概述 TAMUTRAP 设施外，我们还展示了我们独特的 Penning 阱能够以类似于典型阱设计的精度测量质量。