HR001125S0004_QuSeN_Amendment_3_Summary_of_Changes.docx

This is Amendment 3 to the Quantum Sensing of Neutrinos (QuSeN) Broad Agency Announcement (BAA) HR001125S0004, which extends two key deadlines: the question submittal deadline to January 22, 2025, and the proposal due date to February 3, 2025.

The underlying opportunity, managed by the Defense Advanced Research Projects Agency (DARPA), seeks proposals for innovative high-sensitivity neutrino detectors. The program aims to develop detectors that can identify neutrinos from nuclear reactors and materials, utilizing neutrino-matter interactions that produce low-energy nuclear recoils and athermal phonons in absorber materials at the multi-kilogram scale. The opportunity falls under the Research and Technology Development program (CFDA 12.910) and will be awarded through cooperative agreements or procurement contracts. Evolutionary improvements to existing technology are specifically excluded from consideration.