Reactor Neutrino Calculations with CONFLUX

The antineutrino flux from nuclear reactors is an active area of research. It is important for the scientific measurement of neutrino oscillations, CEvNS flux predictions, etc, as well as for reactor neutrino applications, such as remote reactor surveying and pinpointing nuclear data discrepancies. Over the past decade, there have been significant discrepancies between the predicted and measured flux, motivating the need for new reactor neutrino measurements, as well as a revision of nuclear data and an updating of our predictions. CONFLUX (Calculation Of Neutrino FLUX) is a new software framework that aims to be a flexible and modular flux prediction package for both these communities. CONFLUX is being developed to help standardize the input and output of our flux predictions, to increase the accessibility of reactor neutrino data, and to set a benchmark for reactor and neutrino data. The core of CONFLUX is built around three different prediction modes: a summation of beta spectra and fission products (Summation), a conversion of the beta spectra to neutrino spectra (Beta-Conversion), and a direct measurement and extrapolation from current measurements (direct neutrino measurements). The comprehensive use of updated nuclear databases allows users to perform sensitivity studies, evaluate the impact of new data, assess novel reactor types, conduct BSM studies, etc. In this presentation we will describe the structure of the framework and preliminary beta and fission product calculations