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.

冷分子核时间反转实验 (CeNTREX) 是一项新的努力，旨在显着提高灵敏度，超过目前强子时间反转 ( T ) 违反基本相互作用的强度的最佳上限。实验特征将是极化氟化铊 (TlF) 分子中²⁰⁵ Tl 的核磁共振频率的变化。在这里，我们描述了研究这些违反T 的交互以及使用 TlF 这样做的动机。为了获得比先前搜索T更高的灵敏度-违反 TlF，CeNTREX 使用低温分子束源、光学状态制备和检测以及相干量子状态操作的现代方法。介绍了测量方案的详细信息和设备的当前状态，以及对 TlF 光束的定量测量。最后，讨论了估计的灵敏度和控制系统误差的方法。