CeNTREX: a new search for time-reversal symmetry violation in the 205Tl nucleus
CeNTREX: a new search for time-reversal symmetry violation in the 205Tl nucleus
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DOI：
10.1088/2058-9565/abdca3
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发表时间：
2020-10
影响因子：
6.7
通讯作者：
Olivier Grasdijk;Oskari Timgren;Jakob Kastelic;Trevor Wright;S. Lamoreaux;D. DeMille;Konrad Wenz;M. Aitken;T. Zelevinsky;T. Winick;D. Kawall
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文献类型：
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作者：
Olivier Grasdijk;Oskari Timgren;Jakob Kastelic;Trevor Wright;S. Lamoreaux;D. DeMille;Konrad Wenz;M. Aitken;T. Zelevinsky;T. Winick;D. Kawall
冷分子核时间反转实验(CENTREX)是一项新的努力，旨在显著提高灵敏度，使其超过目前违反基本相互作用的强子时间反转(T)强度的最佳上限。实验的特征将是205Tl在电极化的TLF分子中的核磁共振频率的移动。在这里，我们描述了研究这些违反T的相互作用的动机和使用TLF来这样做的动机。为了获得比以前对TLF中T破坏的搜索更高的灵敏度，Centrex使用了低温分子束源、光学状态准备和检测以及现代相干量子态操作方法。详细介绍了该装置的测量方案和现状，并对TLF束流进行了定量测量。最后讨论了估计灵敏度和控制系统误差的方法。
The Cold molecule Nuclear Time-Reversal EXperiment (CeNTREX) is a new effort aiming for a significant increase in sensitivity over the best present upper bounds on the strength of hadronic time reversal (T) violating fundamental interactions. The experimental signature will be shifts in nuclear magnetic resonance frequencies of 205Tl in electrically-polarized thallium fluoride (TlF) molecules. Here we describe the motivation for studying these T-violating interactions and for using TlF to do so. To achieve higher sensitivity than earlier searches for T-violation in TlF, CeNTREX uses a cryogenic molecular beam source, optical state preparation and detection, and modern methods of coherent quantum state manipulation. Details of the measurement scheme and the current state of the apparatus are presented, with quantitative measurements of the TlF beam. Finally, the estimated sensitivity and methods to control systematic errors are discussed.