The Princeton Axion Search: Cryogenic Comissioning and Design of the Data Acquisition System
ORAL
Abstract
The Princeton aXion Search (PXS) is a new experiment to search for QCD axion dark matter in the 0.8-2.1 ueV mass range. In this talk, I will present an overview of the experiment, as well as updates to the cryostat commissioning. The PXS resonating cavity will be immersed in a 5T, 800mm bore NbTi magnet, which is currently under construction and expected to be completed in the fall of 2026. I will outline the magnet design, and present results from in-lab testing of a smaller Nb3Sn test coil. Finally, I will present preliminary results on the PXS data acquisition and analysis suite, which is based on a radio-frequency system on chip (RFSoC) board. The RFSoC's 5 GSPS ADC enables direct digitization in the PXS frequency band, and the on-board FPGA allows for fast parallel processing of the large data rates resulting from the sampling frequency.
*PXS is supported by the ``Table-top experiments for fundamental physics'' program, sponsored by the Gordon and Betty Moore Foundation, Simons Foundation, Alfred P. Sloan Foundation, and John Templeton Foundation. The project is supported by Simons Foundation under grant MP-TMPS-00002996. PXS acknowledge support from Princeton Innovation Fund for New Ideas in the Natural Sciences.
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Presenters
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Joelle-Marie Begin
- Princeton University