Using Core Collapse Supernova "Fire Drills" to Test IceCube and SNEWS 2.0, the SuperNova Early Warning System

The next core-collapse supernova (CCSN) in the Milky Way presents a once-in-a-lifetime opportunity to obtain detailed measurements on the explosion of a star and the extreme conditions found within its core. Local CCSNe are exceedingly rare, so it is critical that as much information is captured from the event as is possible. The high-intensity neutrino burst from a CCSN, which may arrive at earth up to one day before the corresponding electromagnetic radiation, may be used as a trigger for optical and gravitational wave follow-up.The IceCube Neutrino Observatory is sensitive to this burst of CCSN neutrinos at levels >10σ within the Milky Way, operates with >99% uptime, and is capable of issuing supernova alerts in real time. IceCube's detection capabilities make it a crucial component of the worldwide network of detectors known as the SuperNova Early Warning System (SNEWS 2.0). A "Fire Drill" system was designed perform software-based signal injections of simulated CCSN signals into the IceCube online systems, enabling data challenges to test the operational readiness of IceCube. We will report IceCube's sensitivity to Galactic CCSN, present the results of a series of fire drill data challenges, and discuss coordination of future fire drills with SNEWS 2.0.