David Zegeye^1,2,*, Federico Bianchini³, J. Richard Bond⁴, Jens Chluba⁵, Thomas Crawford^1,2, Giulio Fabbian^6,7, Vera Gluscevic⁸, Daniel Grin⁹, J. Colin Hill¹⁰, P. Daniel Meerburg¹¹, Giorgio Orlando¹¹, Bruce Partridge⁹, Christian L. Reichardt¹², Mathieu Remazeilles¹³, Douglas Scott¹⁴, and Edward J. Wollack¹⁵ (The CMB-S4 Collaboration)

• ¹Department of Astronomy and Astrophysics, The University of Chicago, Chicago, Illinois 60637, USA
• ²Kavli Institute for Cosmological Physics, The University of Chicago, Chicago, Illinois 60637, USA
• ³Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, 452 Lomita Mall, Stanford, California 94305, USA
• ⁴Canadian Institute for Theoretical Astrophysics, 60 St. George Street, University of Toronto, Toronto, Ontario M5S 3H8, Canada
• ⁵Jodrell Bank Centre for Astrophysics, Alan Turing Building, University of Manchester, Manchester M13 9PL
• ⁶Center for Computational Astrophysics, Flatiron Institute, 162 5th Avenue, New York, New York 10010, USA
• ⁷School of Physics and Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA, United Kingdom
• ⁸Department of Physics and Astronomy, University of Southern California, Los Angeles, California 90089, USA
• ⁹Department of Physics and Astronomy, Haverford College, 370 Lancaster Avenue, Haverford, Pennsylvania 19041, USA
• ¹⁰Department of Physics, Columbia University, New York, New York 10027, USA
• ¹¹Van Swinderen Institute for Particle Physics and Gravity, University of Groningen, Nijenborgh 4, 9747 AG Groningen, Netherlands
• ¹²School of Physics, University of Melbourne, Parkville, Victoria 3010, Australia
• ¹³Instituto de Fisica de Cantabria (CSIC-UC), Avenida los Castros s/n, 39005 Santander, Spain
• ¹⁴Department of Physics and Astronomy, University of British Columbia, 6225 Agricultural Road, Vancouver, British Columbia V6T 1Z1, Canada
• ¹⁵NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771, USA

• ^*dzegeye@uchicago.edu