Snowmass LOI process has provided an opportunity to engage the community and understand needs and opportunities. As a continuation of that process, we will have a one-day virtual workshop on December 15th to discuss the concept of installing a constant field proton accumulator ring in the Booster tunnel and the HEP physics that could benefit. The workshop will be roughly segmented into BAR design consideration and implementation, while the afternoon will be dedicated to HEP use.