Snowmass Process
The Snowmass Process is a particle physics community planning exercise sponsored by the Division of Particles and Fields of the American Physical Society. During this process, scientists develop a collective vision for the next seven to 10 years for particle physics research in the US. Original planning meetings were held beginning in 1982 in Snowmass, Colorado, but that has not been the location since 2005. More recent locations of the Snowmass Process include the University of Minnesota (2013) and the University of Washington (2021), which was delayed until July 2022, due to COVID. The modern Snowmass Process consists  of a series of small meetings, which culminate in a community-wide meeting. The Snowmass Process solicits reports on progress and plans within "frontiers." Snowmass 2021 identified ten frontiers: "energy; neutrino physics; rare processes and precision measurements; cosmic; theory; accelerator; instrumentation; computation; underground facilities; and community engagement". Members of the particle physics community submit Letters of interest and provide input to contributed whitepapers. The frontiers use these whitepapers to provide web-based reports based on the material that they receive. The final output of the Snowmass Process is a Snowmass Summary for the Public, a Snowmass Summary Report, and the  Snowmass Book. The Snowmass Process outcomes of 2013 were used to inform the decisions of the 2014 Particle Physics Project Prioritization Panel. A newsworthy outcome of the 2021 Snowmass Process was the announcement that the Deep Underground Neutrino Experiment would be pursued in two distinct phases.