The Data Acquisition System for Phase-III of the BeEST Experiment
Abstract
The BeEST experiment is a precision laboratory search for physics beyond the standard model that measures the electron capture decay of 7Be implanted into superconducting tunnel junction (STJ) detectors. For Phase-III of the experiment, we constructed a continuously sampling data acquisition system to extract pulse shape and timing information from 16 STJ pixels offline. Four additional pixels are read out with a fast list-mode digitizer, and one with a nuclear MCA already used in the earlier limit-setting phases of the experiment. We present the performance of the data acquisition system and discuss the relative advantages of the different digitizers.
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