Helium liquefier for human brain magnetometry

蒙特利尔大学（UoM）脑磁图（MEG）实验室能够对人类大脑进行尖端的非侵入性功能成像。UoM最先进的MEG系统能够测量大脑活动，与其他基于血流动力学反应的非侵入性成像技术相比，它提供了精致的时间分辨率，比脑电图具有更高的空间分辨率。UoM MEG实验室提供一系列基础研究，包括在正常和异常发育和衰老的各个阶段，睡眠，感知，认知，记忆，注意力，决策的基本大脑机制。应用包括理解感觉剥夺、损伤（如脑震荡）或各种神经系统疾病后大脑可塑性的机制。MEG实验室迫切需要氦气（He）回收和液化系统，以优化资助资金的使用，以支持学生，科学人员，而不是He。MEG实验室被许多高效的认知神经科学研究人员和他们的学员使用，目前每周需要120升He液，费用相当高。通过购买液化设备，这些成本可以减少80%以上，这将节省大量运营成本，减少不可再生He资源的使用，并更好地利用资金，特别是用于HQP的培训。

The University of Montreal (UoM) Magnetoencephalography (MEG) Laboratory enables cutting-edge non-invasive functional imaging of the human brain. The state-of-the-art MEG system at UoM enables measurements of brain activity that offers exquisite temporal resolution in comparison with other non-invasive imaging techniques based on the hemodynamic response, with superior spatial resolution than EEG. The UoM MEG lab enables a range of basic research including fundamental brain mechanisms of sleep, perception, cognition, memory, attention, decision making, at various stages of normal and abnormal development and aging. Applications include understanding mechanisms of brain plasticity in sensory deprivation, following injury (e.g., concussion), or various neurological disorders. The MEG Lab has an urgent need for a helium (He) recuperation and liquefaction system to optimize use of grant funds for student support, scientific staff, rather than He. The MEG Lab, which is used by numerous highly-productive cognitive neuroscience researchers and their trainees, presently requires 120L of liquid He per week, at considerable expense. These costs could be reduced by more than 80% with the purchase of liquefaction equipment, which would enable major operating cost savings and a reduction in the use of non-renewable He resources, and a better use of funds, in particular for the training of HQP.