  The US Magnet Development Program brings together teams from the leading US
accelerator magnet research programs to develop the next generation of magnet
technology for future collider applications. Sponsored by the DOE Office of
High Energy Physics, the program strives to maintain and strengthen US
Leadership in the field, while nurturing cross-cutting activities from other
programs to further strengthen the research and its impact to the DOE Office of
Science. The US MDP was initiated in 2016, and there has been significant
progress on the original program roadmaps and major advancements in magnet
science. These advances, together with the addition of Brookhaven National
Laboratory to the MDP in 2019 and the onset of the next Snowmass community
planning effort for High Energy Physics in early 2020, motivate a review and
renewal of the program roadmaps. The updated roadmaps presented here are the
result of significant discussion and planning with the MDP research staff,
along with guidance from our Technical Advisory Committee, outreach to
colleagues from the International Community, and feedback from DOE-OHEP.
