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Low-Latency Neutron-Gamma PSD using Pulse-Coupled and Convolutional Neural Networks

Authors: Fabrizio Chinu, Marcello Di Costanzo, Valerio Pagliarino
All the authors equally contributed to the project.

In this work a deep learning-based technique using Pulse-Coupled Neural Networks (PCNN) and Convolutional Neural Networks (CNN) is applied to a neutron-gamma Pulse Shape Discrimination (PSD) task. The model is provided with a digitized signal from a scintillator coupled with SiPM. After a post-training analysis of the CNN model, the transfer learning approach is used to investigate the applicability to other particle detectors. Finally, the CNN model is compressed, quantized and deployed on Field Programmable Gate Array real-time electronics. The final model, on a balanced dataset of 9324 items, obtained an accuracy of 99.98 $\mathbf{\pm}$ 0.02 % in binary classification with the same detector. An accuracy of 98.28 % and 99.83 % is obtained after the transfer learning, targeting two different particle detector.

Downloading the datasets

DATASET 1:

Paper: https://link.springer.com/article/10.1007/s41365-022-01054-6
Dataset: https://www.scidb.cn/en/detail?dataSetId=327d6ec5119b46cf84b61b2be0300471

wget https://china.scidb.cn/download?fileId=e92e5dcac193d006e9dfd8096fb005ed&traceId=9407e6dc-2e78-4540-b69b-026c8437c143 -O ./dataset1.zip
tar –xvzf ./dataset1.zip

DATASET 2:

Dataset: https://www.scidb.cn/en/detail?dataSetId=8f91b76e2552410da914911b5d889d21

wget https://china.scidb.cn/download?fileId=63e1e798f4ef407916cadc47&traceId=9407e6dc-2e78-4540-b69b-026c8437c143 -O ./dataset2.zip
tar –xvzf ./dataset2.zip

DATASET 3:

Data from: https://github.com/NeutronNeutrinoSensing/PSDwithML
Download the dataset from Dropbox: https://www.dropbox.com/sh/sklqbrd7gvq6azz/AABCExrGTyESctHbs1eQO4m6a?dl=0
put the files inside a folder named ./dataset3

DATASET 4:

Data from: https://github.com/NeutronNeutrinoSensing/PSDwithML

git clone https://github.com/NeutronNeutrinoSensing/PSDwithML
mkdir dataset4
mv ./PSDwithML/data/* ./dataset4
rm -r ./PSDwithML

Configuring the Environment:

Python3 env for Neural Network training

virtualenv                        20.16.4
visualkeras                       0.0.2
tensorboard                       2.11.2
tensorboard-data-server           0.6.1
tensorboard-plugin-wit            1.8.0
tensorflow                        2.11.0
tensorflow-datasets               4.4.0
tensorflow-estimator              2.11.0
tensorflow-gpu                    2.7.0
tensorflow-io-gcs-filesystem      0.31.0
tensorflow-metadata               1.2.0
tensorflow-model-optimization     0.7.3
tensorpac                         0.6.5
sklearn                           0.0
scikit-learn                      1.0.2
scikit-image                      0.18.3
scikit-learn                      0.24.2
scikit-optimize                   0.8.1
scipy                             1.1.0
seaborn                           0.11.2
QKeras                            0.9.0
PyVirtualDisplay                  3.0
pydot                             1.4.2
pip                               23.0.1
notebook                          6.4.0
nteract-on-jupyter                2.1.3
keras                             2.11.0
Keras-Applications                1.0.8
keras-nightly                     2.5.0.dev2021020510
Keras-Preprocessing               1.1.2
keras-rl2                         1.0.5
keras-tuner                       1.3.5
keras-unet                        0.1.2
keras-vis                         0.4.1
MarkupSafe                        2.1.3
matplotlib                        3.5.3
matplotlib-inline                 0.1.6
numpy                             1.21.6
pandas                            1.3.5

Python3 env for HLS4ML flow

Recommended - configuration using Docker: https://github.com/fastmachinelearning/hls4ml/blob/main/test/docker/README.md

MarkupSafe                    2.1.3
matplotlib                    3.5.3
matplotlib-inline             0.1.6
numpy                         1.21.6
h5py                          3.8.0
hls4ml                        0.7.1
keras                         2.11.0
keras-tuner                   1.3.5
onnx                          1.14.0
pandas                        1.3.5
pydot                         1.4.2
scikit-learn                  1.0.2
scipy                         1.1.0
tensorboard                   2.11.2
tensorboard-data-server       0.6.1
tensorboard-plugin-wit        1.8.1
tensorflow                    2.11.0
tensorflow-estimator          2.11.0
tensorflow-io-gcs-filesystem  0.32.0
tensorflow-model-optimization 0.7.3
QKeras                        0.9.0
visualkeras                   0.0.2

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Neutron Gamma Pulse Shape Discrimination using PCNN and CNN

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