Target Insert Design for Dynamic Nuclear Polarization

The UNH Nuclear Physics Group (NPG) operates a dynamic nuclear polarization (DNP) lab in order to prepare samples with a high degree of nuclear spin orientation to be used in electron scattering experiments at Jefferson Lab. The current insert is optimized for spin-1 nuclei and allows for monitoring of material polarization via NMR techniques, and enhancement of tensor polarization via RF techniques. However, it has been difficult achieving vacuum among other issues, so we are designing a new target insert with improved vacuum seals, more uniform RF coils and with EPR capabilities to monitor dopant characteristics. When this insert has been constructed, I plan to create further designs for spin-1/2 materials and with further specialization in EPR and RF circuits, respectively.