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SPEAKER: John Groh (NIST)- TITLE: Pointing Superconductors at the Sky: Towards new fundamental physics through precision cosmic microwave background measurements
March 2, 2023 @ 4:00 pm - 5:00 pm
This is an In-Person Event
Location: Sessler Conference Room – 50A-5-5132
Title: Pointing Superconductors at the Sky: Towards new fundamental physics through precision cosmic microwave background measurements
Abstract: The cosmic microwave background is an incredible tool for probing fundamental physics, both as a snapshot of the early universe and as a backlight to subsequent cosmic evolution. The next generation of observatories will cross several important qualitative thresholds for characterizing possible cosmic inflation mechanisms and neutrino masses while also constraining dark energy, light relic particles, and modified gravity. To make these measurements, these observatories will require at least an order of magnitude improvement in both sensitivity and size, presenting significant instrumentation challenges. In this talk, I will discuss key technology advances leading to more capable instruments, focusing on highly multiplexed readout of the increasingly large cryogenic sensor arrays. I will also describe work incorporating novel instrumentation technologies into a new microwave observatory – the Simons Array – and commissioning it at its observing site in the Chilean Atacama. Not only are these developments enabling new physics and cosmology measurements through the Simons Array, SPT-3G, the Simons Observatory, and AliCPT experiments, but they are also building technological readiness as the field prepares for CMB-S4.
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https://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09
Meeting ID: 988 5432 2464
Passcode: 142239