Nonlinear pile-up separation with LSTM neural networks for cryogenic particle detectors

12/13/2021

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by   Felix Wagner, et al.

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In high-background or calibration measurements with cryogenic particle detectors, a significant share of the exposure is lost due to pile-up of recoil events. We propose a method for the separation of pile-up events with an LSTM neural network and evaluate its performance on an exemplary data set. Despite a non-linear detector response function, we can reconstruct the ground truth of a severely distorted energy spectrum reasonably well.