Energy non-linearity study of a high-resolution metallic magnetic calorimeter
Abstract
Low temperature detectors (LTDs) are high energy resolution energy dispersive spectrometers. Therefore, they are suitable for accurate measurements of X-ray or gamma-ray transition energies. However, the energy response of LTDs is non-linear. Therefore, it is required to correct the non-linearity to provide precise and accurate measurement. In this work, we present the study of the non-linearity of an LTD based on metallic magnetic sensors having an energy resolution below around 50 eV up to energies of 200 keV. The non-linearity was measured using a mix of radionuclides, 241Am, 152Eu, 210Pb, 129I and 139Ce, emitting X-rays and gamma-rays below 200 keV. The pulse energies and the energy spectra were obtained from different types of signal processing to evaluate their impact on the non-linearity. In addition, pulses were recorded with different preamplifier gains to identify possible non-linearity arising from the electronics and the DAQ. Finally the measured non-linearities were compared with the calculated non-linearity form the thermodynamic quantities of the MMC.
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BibTeX
@article{zahir2026energy,
title = {{Energy non-linearity study of a high-resolution metallic magnetic calorimeter}},
author = {Mostafa Lokman Zahir and Matias Rodrigues and Martin Loidl and Arshjot Kaur},
journal = {Radiation Physics and Chemistry},
year = {2026},
month = sep,
doi = {10.1016/j.radphyschem.2024.111730},
url = {https://cea.hal.science/cea-04797040v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Energy non-linearity study of a high-resolution metallic magnetic calorimeter
AU - Mostafa Lokman Zahir
AU - Matias Rodrigues
AU - Martin Loidl
AU - Arshjot Kaur
PY - 2026
DA - 2026/09/10
JO - Radiation Physics and Chemistry
DO - 10.1016/j.radphyschem.2024.111730
UR - https://cea.hal.science/cea-04797040v1
AB - Low temperature detectors (LTDs) are high energy resolution energy dispersive spectrometers. Therefore, they are suitable for accurate measurements of X-ray or gamma-ray transition energies. However, the energy response of LTDs is non-linear. Therefore, it is required to correct the non-linearity to provide precise and accurate measurement. In this work, we present the study of the non-linearity of an LTD based on metallic magnetic sensors having an energy resolution below around 50 eV up to energies of 200 keV. The non-linearity was measured using a mix of radionuclides, 241Am, 152Eu, 210Pb, 129I and 139Ce, emitting X-rays and gamma-rays below 200 keV. The pulse energies and the energy spectra were obtained from different types of signal processing to evaluate their impact on the non-linearity. In addition, pulses were recorded with different preamplifier gains to identify possible non-linearity arising from the electronics and the DAQ. Finally the measured non-linearities were compared with the calculated non-linearity form the thermodynamic quantities of the MMC.
SN - 0969-806X
SN - 1879-0895
ER -