CCAT-prime: Designs and Status of the First Light 280 GHz MKID Array and Mod-Cam Receiver

A summary of C. J. Duell, E. M. Vavagiakis et al., "CCAT-prime: Designs and Status of the First Light 280 GHz MKID Array and Mod-Cam Receiver," Proc. SPIE 2020 (in submission), https://arxiv.org/abs/2012.10411 The CCAT-prime project's first light array will be deployed in Mod-Cam, a single-module testbed and first light cryostat, on the Fred Young Submillimeter … Continue reading CCAT-prime: Designs and Status of the First Light 280 GHz MKID Array and Mod-Cam Receiver

The Simons Observatory: Magnetic Sensitivity Measurements of Microwave SQUID Multiplexers

A summary of E. M. Vavagiakis et al., "The Simons Observatory: Magnetic Sensitivity Measurements of Microwave SQUID Multiplexers," IEEE Trans. Appl. Supercond. 2020 (in review) https://arxiv.org/abs/2012.04532 Cosmic microwave background (CMB) experiment cameras rely on superconducting detectors and readout systems which are sensitive to magnetic fields. Experiments like the Simons Observatory (SO) use these devices for … Continue reading The Simons Observatory: Magnetic Sensitivity Measurements of Microwave SQUID Multiplexers

Developing AlMn films for Argonne TES fabrication

Paper summary: E. M. Vavagiakis, N. F. Cothard, J. R. Stevens, C.L. Chang, M.D. Niemack, G. Wang, V.G. Yefremenko, J. Zhang 2019. “Developing AlMn Films for Argonne TES fabrication,” Journal of Low Temperature Physics, arXiv:1910.10199. The reference design for the next-generation cosmic microwave background (CMB) experiment, CMB-S4, relies on large arrays of transition edge sensor (TES) … Continue reading Developing AlMn films for Argonne TES fabrication

The Largest Liquid Argon Neutrino Detector in the World: ProtoDUNE

ProtoDUNE is helping lead the way for the next generation of long-baseline neutrino experiments, and is exceeding expectations. DUNE, the Deep Underground Neutrino Experiment, will deploy four massive Liquid Argon Time Projection Chambers (LArTPCs) totaling 40 kilotons of liquid argon to study neutrinos, one of the universe’s most elusive particles. Time Projection Chambers use sensitive … Continue reading The Largest Liquid Argon Neutrino Detector in the World: ProtoDUNE

Designing a cryostat for Simons Observatory

A small number of us from the Simons Observatory (SO) cryogenics working group met at the University of Pennsylvania this week to dig into the beginnings of design requirements for the large-aperture telescope's cryogenic receiver. The sheer size of this cryostat (~2.5 meters in diameter) makes it an exciting design challenge. It will house the optics … Continue reading Designing a cryostat for Simons Observatory