Equipment: Helium Recovery Equipment for a Regional NMR and EPR Laboratory at Wayne State University

在化学系的支持下，韦恩州立大学（WSU）的Chekmenev教授正在实施一个封闭的氦回收系统，以维持三个共享的研究核磁共振（NMR）仪器，一个教学NMR仪器和一个7特斯拉傅里叶变换离子回旋共振质谱仪（FT-ICR MS）。这些仪器用于识别和表征分子，是必不可少的研究工具。这些仪器利用高场超导磁体，需要液氦来维持其磁场。氦是一种不可再生的自然资源，全球性的氦短缺对我们维护这些磁铁的能力产生了负面影响。氦回收系统将减轻由此产生的不确定性，使WSU在合成化学、生物化学、催化、食品科学、生物医学科学和技术、微电子/传感和生物材料等领域的前沿科学研究得以继续。一个闭环系统将从WSU化学系设施中与NMR和质谱仪相关的超导磁体中捕获氦。收集的气体将暂时储存在中压罐中，然后在集中站液化，然后转移到单独的移动的杜瓦瓶容器中，用于磁体填充。将监测回收率并向NSF报告。 预计会有很高的恢复率。 回收宝贵的He来维持WSU化学的NMR和MS仪器的能力将有助于推动招聘和培训多样化的学生群体，作为该部门研究和教学任务的一个组成部分。该奖项反映了NSF的法定使命，并被认为值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估来支持。

With support from the Division of Chemistry, Professor Chekmenev at Wayne State University (WSU) is implementing a closed helium recovery system to sustain three shared research Nuclear Magnetic Resonance (NMR) instruments, one teaching NMR instrument, and a 7-Tesla Fourier Transform Ion Cyclotron Resonance Mass Spectrometer (FT-ICR MS). The instruments are used to identify and characterize molecules and are essential research tools. These instruments utilize high-field superconducting magnets that require liquid helium to maintain their fields. There is a global shortage of helium – a non-renewable natural resource – which has negatively impacted our ability to maintain these magnets. The helium recovery system will mitigate resulting uncertainty, enabling continuation of WSU research at the forefront of science in the fields of synthetic chemistry, biological chemistry, catalysis, food science, biomedical sciences and technology, microelectronics/sensing, and biomaterials.A closed-loop system will capture helium from the superconducting magnets associated with the NMR and mass spectrometry instruments in the WSU chemistry department facility. The collected gas will be temporarily stored in medium-pressure tanks before being liquified at a centralized station and then transferred to a separate mobile Dewar receptacle to be used for magnet fills. the recovery rate will be monitored and reported to NSF. A high rate of recovery is expected. The ability to recycle precious He to sustain the NMR and MS instruments at WSU Chemistry will help drive the recruitment and training of a diverse group of students as an integral part of the research and teaching missions of the department .This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.