Cold Electronics Develpment for the Next Generation Axion Dark Matter eXperiment
ORAL
Abstract
The Axion Dark Matter eXperiment - Extended Frequency Range (ADMX-EFR) is a next generation microwave cavity haloscope experiment, which will search for axionic dark matter at DFSZ sensitivities in the 2 - 4 GHz frequency range. Optimizing noise performance in the first stage cold electronics is critical for achieving high scan speeds at our target sensitivities. At Washington University, we are developing this first stage cold amplifier system needed to amplify an axion signal above the background electrical noise. We will discuss our efforts in designing a system that can improve scan speeds through vacuum squeezing and the flux pumped Josephson parametric amplifiers (JPAs) capable of achieving this.
*This work was supported by the U.S. Department of Energy through Grants No DE-SC0009800, No. DE-SC0009723, No. DE-SC0010296, No. DE-SC0010280, No. DE-SC0011665, No. DEFG02-97ER41029, No. DE-FG02-96ER40956, No. DEAC52-07NA27344, No. DE-C03-76SF00098 and No. DE-SC0017987. Fermilab is a U.S. Department of Energy, Office of Science, HEP User Facility. Fermilab is managed by Fermi Research Alliance, LLC (FRA), acting under Contract No. DE-AC02-07CH11359. Additional support was provided by the Heising-Simons Foundation and by the Lawrence Livermore National Laboratory and Pacific Northwest National Laboratory LDRD office
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Presenters
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Jonah Hoffman
- Washington University in St Louis