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September 1, 2017
As agreed upon at the Aug 2017 Workshop, the Interim Collaboration Coordination Committee (ICCC) for the S4 will coordinate the activities of the Working Groups formed to work on collaboration bylaws and technical and science efforts. The ICCC will have 15 members. S4 registered voters will choose 7 members, and the remaining members will be appointed by the S4 Workshops Science Organizing Committee to ensure diversity on the ICCC, including career experience, institutional sizes, projects, locations of institutions, etc. The ICCC will elect its own chair, and other positions as needed (like deputy chair and secretary). The ICCC will disband once the governance bylaws are ratified.Learn more >>
Harvard-2017: Collaboration Workshop
August 28, 2017
The CMB-S4 Collaboration Workshop at Harvard (August 2017) will continue the series of open workshops for the CMB observational and theoretical community to define the 'Stage-4' ground-based cosmic microwave background (CMB) experiment.
From the CMB-S4 homepage: ''[this experiment], consisting of dedicated telescopes equipped with highly sensitive superconducting cameras operating at the South Pole, the high Chilean Atacama plateau, and possibly northern hemisphere sites, will provide a dramatic leap forward in our understanding of the fundamental nature of space and time and the evolution of the Universe. CMB-S4 will be designed to cross critical thresholds in testing inflation, determining the number and masses of the neutrinos, constraining possible new light relic particles, providing precise constraints on the nature of dark energy, and testing general relativity on large scales.''
Topics of the workshop
CMB-S4 Technology Book, First Edition (arXiv:1706.02464)
June 19, 2017
CMB-S4 is a proposed experiment to map the polarization of the Cosmic Microwave Background (CMB) to nearly the cosmic variance limit for the angular scales that are accessible from the ground. The science goals and capabilities of CMB-S4 in illuminating cosmic inflation, measuring the sum of neutrino masses, searching for relativistic relics in the early universe, characterizing dark energy and dark matter, and mapping the matter distribution in the universe have been described in the CMB-S4 Science Book. This Technology Book is a companion volume to the Science Book. The ambitious science goals of the proposed ''Stage-IV'' CMB-S4 will require a step forward in experimental capability from the current Stage-III experiments. To guide this process, the community summarized the current state of the technology and identify R&D efforts necessary to advance it for possible use in CMB-S4. The book focused on the technical challenges in four broad areas: Telescope Design; Receiver Optics; Focal-Plane Optical Coupling; and Focal-Plane Sensor and Readout.Learn more >>
SLAC-2017 Collaboration Workshop.
March 1, 2017
Themes of this workshop include a particular focus on
Joint DOE and NSF Concept Definition Task Force has been formed
January 6, 2017
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CMB-S4 Science Book, First Edition (arXiv:1610.02743)
October 10, 2016
This book lays out the scientific goals to be addressed by the next-generation ground-based cosmic microwave background experiment, CMB-S4, envisioned to consist of dedicated telescopes at the South Pole, the high Chilean Atacama plateau and possibly a northern hemisphere site, all equipped with new superconducting cameras. CMB-S4 will dramatically advance cosmological studies by crossing critical thresholds in the search for the B-mode polarization signature of primordial gravitational waves, in the determination of the number and masses of the neutrinos, in the search for evidence of new light relics, in constraining the nature of dark energy, and in testing general relativity on large scales.Learn more >>
UChicago 2016 Collaboration Workshop
September 21, 2016
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LBNL-2016 Collaboration Workshop
March 7, 2016
This collaboration workshop will be hosted by Lawrence Berkeley National Laboratory.Learn more >>
UMICH-2015 Collaboration Workshop
September 21, 2015
This workshop aims to further develop the science goals, including the requisite measurements to achieve them, for the next generation ground-based Cosmic Microwave Background program, CMB-S4. The output of the workshop will be a working draft of the CMB-S4 "Science Book." This is the first in a series of potentially biannual workshops focused on developing the CMB-S4 project.
Opening sessions will begin with invited plenary talks. These will be followed by a series of parallel breakout sessions, followed by plenary reports and discussion.Learn more >>