A New NMR System for Solid Polarized Targets

Solid polarized targets rely on continuous-wave Nuclear Magnetic Resonance techniques to provide measurements of the enhanced polarization from Dynamic Nuclear Polarization. For decades, Jefferson Lab has relied upon Liverpool Q-meters for NMR measurements, but these contain obsolete components and are no longer produced. To address the needs of coming polarized target experiments at JLab, we have developed a new NMR system with Q-meters based on the Liverpool design. In addition to new Q-meter circuits, this system adds electronic resonance tuning and phase shifting capabilities in modular hardware components. A new, FPGA-based data acquisition system allows control and measurement through an ethernet connection, interfaced via new Python software which brings additional data analysis tools to experimental runs. We will discuss the design and operation of this new system and plans for future NMR development at JLab.