The DESI collaboration is now in the process of forming. The project has received an LOI from Argonne detailing possible roles and capabilities. The primary Argonne role in the DESI project is expected to be responsibility for large-scale simulations and generating synthetic catalogs to support survey strategy, optimization, and error analysis studies. This work will be carried out in collaboration with the UC Berkeley, LBNL, and Yale groups, and led by Salman Habib and KatrinHeitmann. Additionally, project-specific simulations, simulation products, and simulation-based predictors and statistical tools (emulators, covariance matrices) will be made available for use by the project and the DESI science working groups (in which Argonne will also participate).
Argonne is an institutional member of the LSST project (Salman Habib is the institutional representative and a member of the LSSTC Enabling Science task force) and participates in a number of LSST-DESC activities, including simulation, supernovae, large-scale structure, and weak lensing. KatrinHeitmann is the convener of the cosmological simulation working group in the LSST-DESC. Steve Kuhlmann leads the Argonne supernova effort within LSST-DESC. The primary simulation activity currently is in the generation of synthetic catalogs in collaboration with UC Berkeley. The catalogs are matched to LSST requirements provided by the image simulation team at the University of Washington. Work is also ongoing in development of scalable analysis algorithms and various simulation-based tools and science products targeted to LSST dataflows and science analyses.