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액시온 및 극한상호작용 연구단
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Fast DAQ system with image rejection for axion dark matter searches

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Title
Fast DAQ system with image rejection for axion dark matter searches
Author(s)
Saebyeok Ahn; Myeongjae Lee; Andrew Kunwoo Lee; Beomki Yeo; Byeongrok Ko; Yannis K. Semertzidis
Publication Date
2022-05
Journal
Journal of Instrumentation, v.17, no.05
Publisher
IOP Publishing
Abstract
Abstract A fast data acquisition (DAQ) system for axion dark matter searches utilizing a microwave resonant cavity, also known as axion haloscope searches, has been developed with a two-channel digitizer that can sample 16-bit amplitudes at rates up to 180 MSamples/s. First, we realized a practical DAQ efficiency of greater than 99% for a single DAQ channel, where the DAQ process includes the online fast Fourier transforms (FFTs). Using an IQ mixer and two parallel DAQ channels, we then also implemented a software-based image rejection without losing the DAQ efficiency. This work extends our continuing effort to improve the figure of merit in axion haloscope searches, the scanning rate.
URI
https://pr.ibs.re.kr/handle/8788114/11946
DOI
10.1088/1748-0221/17/05/p05025
ISSN
1748-0221
Appears in Collections:
Center for Axion and Precision Physics Research(액시온 및 극한상호작용 연구단) > 1. Journal Papers (저널논문)
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