The GAmmas from Nuclear Decays Hiding from Investigators (GANDHI) Experiment

Understand

We propose a high statistics experiment to search for invisible decay modes in nuclear gamma cascades.

• A radioactive source (such as $^{60}$Co or $^{24}$Na) that triggers gamma cascades is placed in the middle of a large, hermetically sealed scintillation detector, enabling photon identification with high accuracy.
• Invisible modes are identified by establishing the absence of a photon in a well-identified gamma cascade.
• We propose the use of fast scintillators with nanosecond timing resolution, permitting event rates as high as $10^{7}$ Hz.