Development of an FPGA-based realtime DAQ system for axion haloscope experiments
| Autor: | M. J. Lee, B. R. Ko, Saebyeok Ahn |
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| Rok vydání: | 2021 |
| Předmět: |
Physics
Spectrum analyzer Physics - Instrumentation and Detectors business.industry Fast Fourier transform FOS: Physical sciences Instrumentation and Detectors (physics.ins-det) 500 kHz High Energy Physics - Experiment High Energy Physics - Experiment (hep-ex) Data acquisition Radio frequency business Field-programmable gate array Instrumentation Mathematical Physics Primakoff effect Computer hardware Data transmission |
| DOI: | 10.48550/arxiv.2111.03902 |
| Popis: | A real-time Data Acquisition (DAQ) system for the CULTASK axion haloscope experiment was constructed and tested. The CULTASK is an experiment to search for cosmic axions using resonant cavities, to detect photons from axion conversion through the inverse Primakoff effect in a few GHz frequency range in a very high magnetic field and at an ultra low temperature. The constructed DAQ system utilizes a Field Programmable Gate Array (FPGA) for data processing and Fast Fourier Transformation. This design along with a custom Ethernet packet designed for real-time data transfer enables 100% DAQ efficiency, which is the key feature compared with a commercial spectrum analyzer. This DAQ system is optimally designed for RF signal detection in the axion experiment, with 100 Hz frequency resolution and 500 kHz analysis window. The noise level of the DAQ system averaged over 100,000 measurements is around -111.7 dBm. From a pseudo-data analysis, an improvement of the signal-to-noise ratio due to repeating and averaging the measurements using this real-time DAQ system was confirmed. |
| Databáze: | OpenAIRE |
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