CMB-S4—the next-generation ground-based cosmic microwave background (CMB) experiment—is set to si... more CMB-S4—the next-generation ground-based cosmic microwave background (CMB) experiment—is set to significantly advance the sensitivity of CMB measurements and enhance our understanding of the origin and evolution of the universe. Among the science cases pursued with CMB-S4, the quest for detecting primordial gravitational waves is a central driver of the experimental design. This work details the development of a forecasting framework that includes a power-spectrum-based semianalytic projection tool, targeted explicitly toward optimizing constraints on the tensor-to-scalar ratio, r, in the presence of Galactic foregrounds and gravitational lensing of the CMB. This framework is unique in its direct use of information from the achieved performance of current Stage 2–3 CMB experiments to robustly forecast the science reach of upcoming CMB-polarization endeavors. The methodology allows for rapid iteration over experimental configurations and offers a flexible way to optimize the design of...
Submitted for the MAR16 Meeting of The American Physical Society Microfabrication of Arrays of Su... more Submitted for the MAR16 Meeting of The American Physical Society Microfabrication of Arrays of Superconducting Transition Edge Sensors for CMB Measurements CHRYSTIAN POSADA, JUNJIA DING, AMY BENDER, TRUPTI KHAIRE, Argonne National Laboratory, SERGI LENDINEZ, Universitat de Barcelona, SAMUEL CIOCYS, University of California, Berkeley, GENSHENG WANG, VOLODYMYR YEFREMENKO, Argonne National Laboratory, STEVE PADIN, JOHN CARLSTROM, University of Chicago, CLARENCE CHANG, VALENTINE NOVOSAD, Argonne National Laboratory, SPT3G COLLABORATION1 — The cosmic microwave background (CMB) provides a unique window for exploring fundamental physics. Increasing the sensitivity of CMB experiments requires fabricating focal planes with orders of magnitude more detectors than current instruments. This work presents the procedures used at Argonne National Laboratory for the fabrication of large arrays of dual-polarized multichroic detectors for CMB measurements. The detectors are composed of a broad-band s...
CMB-S4—the next-generation ground-based cosmic microwave background (CMB) experiment—is set to si... more CMB-S4—the next-generation ground-based cosmic microwave background (CMB) experiment—is set to significantly advance the sensitivity of CMB measurements and enhance our understanding of the origin and evolution of the universe. Among the science cases pursued with CMB-S4, the quest for detecting primordial gravitational waves is a central driver of the experimental design. This work details the development of a forecasting framework that includes a power-spectrum-based semianalytic projection tool, targeted explicitly toward optimizing constraints on the tensor-to-scalar ratio, r, in the presence of Galactic foregrounds and gravitational lensing of the CMB. This framework is unique in its direct use of information from the achieved performance of current Stage 2–3 CMB experiments to robustly forecast the science reach of upcoming CMB-polarization endeavors. The methodology allows for rapid iteration over experimental configurations and offers a flexible way to optimize the design of...
Submitted for the MAR16 Meeting of The American Physical Society Microfabrication of Arrays of Su... more Submitted for the MAR16 Meeting of The American Physical Society Microfabrication of Arrays of Superconducting Transition Edge Sensors for CMB Measurements CHRYSTIAN POSADA, JUNJIA DING, AMY BENDER, TRUPTI KHAIRE, Argonne National Laboratory, SERGI LENDINEZ, Universitat de Barcelona, SAMUEL CIOCYS, University of California, Berkeley, GENSHENG WANG, VOLODYMYR YEFREMENKO, Argonne National Laboratory, STEVE PADIN, JOHN CARLSTROM, University of Chicago, CLARENCE CHANG, VALENTINE NOVOSAD, Argonne National Laboratory, SPT3G COLLABORATION1 — The cosmic microwave background (CMB) provides a unique window for exploring fundamental physics. Increasing the sensitivity of CMB experiments requires fabricating focal planes with orders of magnitude more detectors than current instruments. This work presents the procedures used at Argonne National Laboratory for the fabrication of large arrays of dual-polarized multichroic detectors for CMB measurements. The detectors are composed of a broad-band s...
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Papers by Gensheng Wang