Dark matter search with the Cosmic Axion Spin Precession Experiment (CASPEr)

The nature of dark matter is an open question in fundamental physics. The Cosmic Axion Spin Precession Experiment (CASPEr) is a laboratory scale search for the axion as a dark matter candidate [D. Budker, et al., Phys. Rev. X 4, 021030]. The range of axion-like dark matter masses to which CASPEr is sensitive extends from feV to μeV with sensitivity beyond current astrophysical limits. CASPEr uses Nuclear Magnetic Resonance (NMR) techniques and precision magnetic sensors, such as Superconducting Quantum Interference Devices (SQUIDs). The current status and preliminary results of CASPEr will be presented.