Snowmass 2021 White Paper: The Windchime Project

TitleSnowmass 2021 White Paper: The Windchime Project
Publication TypeJournal Article
Year of Publication2022
AuthorsCollaboration, TWindchime, Attanasio, A, Bhave, SA, Blanco, C, Carney, D, Demarteau, M, Elshimy, B, Febbraro, M, Feldman, MA, Ghosh, S, Hickin, A, Hong, S, Lang, RF, Lawrie, B, Li, S, Liu, Z, Maldonado, JPA, Marvinney, C, Oo, HZay Yar, Pai, Y-Y, Pooser, R, Qin, J, Sparmann, TJ, Taylor, JM, Tian, H, Tunnell, C
Date Published3/14/2022
KeywordsCosmology and Nongalactic Astrophysics (astro-ph.CO), FOS: Physical sciences, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph)

The absence of clear signals from particle dark matter in direct detection experiments motivates new approaches in disparate regions of viable parameter space. In this Snowmass white paper, we outline the Windchime project, a program to build a large array of quantum-enhanced mechanical sensors. The ultimate aim is to build a detector capable of searching for Planck mass-scale dark matter purely through its gravitational coupling to ordinary matter. In the shorter term, we aim to search for a number of other physics targets, especially some ultralight dark matter candidates. Here, we discuss the basic design, open R&D challenges and opportunities, current experimental efforts, and both short- and long-term physics targets of the Windchime project.