Thibaut Louis¹⁴, Mathew S. Madhavacheril¹¹, Toshiya Namikawa^9,15,2, Lyman A. Page¹², Neelima Sehgal¹⁶, Blake Sherwin^10,2, Cristóbal Sifón¹⁷, Suzanne T. Staggs¹², and Edward J. Wollack¹⁸ (ACT Collaboration)

• ¹Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, United Kingdom
• ²Kavli Institute for Cosmology Cambridge, Madingley Road, Cambridge, CB3 0HA, United Kingdom
• ³Berkeley Center for Cosmological Physics, UC Berkeley, California 94720, USA
• ⁴Department of Physics, UC Berkeley, California 94720, USA
• ⁵Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, USA
• ⁶Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, 452 Lomita Mall, Stanford, California 94305, USA
• ⁷Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, California 94305, USA
• ⁸Canadian Institute for Theoretical Astrophysics, University of Toronto, 60 Saint George Street, Toronto, Ontario, M5S 3H8, Canada
• ⁹School of Physics and Astronomy, Cardiff University, The Parade, Cardiff, Wales, CF24 3AA, United Kingdom
• ¹⁰DAMTP, University of Cambridge, Cambridge, CB3 0WA, United Kingdom
• ¹¹Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, Pennsylvania 19104, USA
• ¹²Joseph Henry Laboratories of Physics, Jadwin Hall, Princeton University, Princeton, New Jersey 08544, USA
• ¹³Department of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, New Jersey 08544, USA
• ¹⁴Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
• ¹⁵Center for Data-Driven Discovery, Kavli IPMU (WPI), UTIAS, The University of Tokyo, Kashiwa, 277-8583, Japan
• ¹⁶Physics and Astronomy Department, Stony Brook University, Stony Brook, New York 11794, USA
• ¹⁷Instituto de Física, Pontificia Universidad Católica de Valparaíso, Casilla 4059, Valparaíso, Chile
• ¹⁸NASA Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt, Maryland 20771, USA

• ^*Contact author: emh83@cam.ac.uk