Probing Neutrino Magnetic Moments at Underground Detectors with Artificial Neutrino Sources

Neutrino-electron scattering can be used to probe neutrino electromagnetic properties at low-threshold underground detectors with good angular and recoil electron energy resolution. We propose to do this using a number of artificial neutrino and anti-neutrino sources such as $^{51}Cr_{24}$ and $^{90}Sr-Y$. The neutrino flux is known to within one percent, in contrast to the reactor case and one can reach lower neutrino energies. For the $^{90}Sr-Y$ source we estimate that the signal expected for a neutrino magnetic moment of $\mu_{\nu}=6 \times 10^{-11}\mu_{B}$ will be comparable to that expected in the SM and corresponds to a 30% enhancement in the total number of expected events.