Low Temperature Property Study of MMCs Used for Neutrinoless Double Beta Decay

Kim, Sang Goon; Jeon, Jin-A; Kim, H. B.; Kim, H. L.; Kim, So Ra; Kim, Y. H.; Kwon, Do Hoon; Lee, Jun Young; Lee, Y. C.; Woo, K. R.

doi:10.1109/tasc.2021.3066179

Cited by 13 publications

(6 citation statements)

References 29 publications

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“…As all the physical parameters can be computed from the COMSOL simulation, we attempted to reproduce the temperature dependence of Ag:Er magnetization and compared the results with the measured values [12]. The calculation shows a reasonably good match to the measured magnetization values under all conditions as shown in Fig.…”

Section: Resultsmentioning

confidence: 88%

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Simulation Study of Magnetic Microcalorimeters for Rare Event Search Experiments

Lee,

Chung,

Jeon

et al. 2024

J Low Temp Phys

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We present advancements in a finite element method for computing the physical properties of magnetic microcalorimeters (MMCs). Utilizing the COMSOL package, we conducted 3D simulations of a meander-shaped Nb coil with a realistic geometry. The resulting magnetic field distribution showed good agreement with a previous 2D simulation and revealed non-negligible differences at the side edge of the sensor material. Employing the simulation results, we calculated the MMC properties and compared them with previous measurements. Our calculated values closely align with the measured values for the sensor magnetization, the pulse heights from alpha detection, and the coil inductance.

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Section: Resultsmentioning

confidence: 88%

“…In previous studies, we developed a genetic MMC design for the phonon detection channels of the AMoRE detector modules [12]. A Nb meander-shaped coil, 5 µm in width and with a pitch of 10 µm, was fabricated with a size of 1×1 mm 2 to serve as both the field-generating and signal-sensing coil.…”

Section: Introductionmentioning

confidence: 99%

Simulation Study of Magnetic Microcalorimeters for Rare Event Search Experiments

Lee,

Chung,

Jeon

et al. 2024

J Low Temp Phys

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“…As a promising alternative, Ag:Er, Erdoped silver [145,158], has been quickly taking over the popularity of Au:Er. A recent study where low temperature properties of MMCs based on two types of sensor materials of Au:Er(1000 ppm) and Ag:Er(414 ppm) were measured [159] demonstrated the Ag:Er MMC showed no noticeable excess heat capacity and larger signal sizes than those from the Au:Er MMC.…”

Section: Magnetic Microcalorimetersmentioning

confidence: 99%

Superconducting detectors for rare event searches in experimental astroparticle physics

Kim

Lee

Yang

2022

Supercond. Sci. Technol.

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Superconducting detectors have become an important tool in experimental astroparticle physics, which seeks to provide a fundamental understanding of the Universe. In particular, such detectors have demonstrated excellent potential in two challenging research areas involving rare event search experiments, namely, the direct detection of dark matter and the search for neutrinoless double beta decay. Here, we review the superconducting detectors that have been and are planned to be used in these two categories of experiments. We first provide brief histories of the two research areas and outline their significance and challenges in astroparticle physics. Then, we present an extensive overview of various types of superconducting detectors with a focus on sensor technologies and detector physics, which are based on calorimetric measurements and heat flow in the detector components. Finally, we introduce leading experiments and discuss their future prospects for the detection of dark matter and the search for neutrinoless double beta decay employing superconducting detectors.

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“…For both heat and light channels, we used Au:Er MMC sensors [19]. Full details of the detector setup can be found in other literature [20].…”

Section: Detector Modulementioning

confidence: 99%

An MMC-based cryogenic calorimeter with a massive sodium molybdate crystal absorber for neutrinoless double beta decay searches

Kim

Sharma

et al. 2022

J. Inst.

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Sodium molybdate crystals are excellent scintillating target material that can be used to investigate the neutrinoless double beta decay of 100Mo. Because this material contains Na nuclei, it could also be used to clarify the contribution of Na in the controversial claim of dark matter observation by the DAMA/LIBRA experiment. Recent developments have allowed the growth of sodium molybdate crystals of several hundred grams, which makes it possible to build large scale experiments. Therefore, a cryogenic calorimeter with a crystal of significant mass, which can exploit the excellent energy resolution from thermal signals and particle identification using the scintillation signals, is highly desired. We have developed a cryogenic calorimeter with a cylindrical sodium molybdate crystal of 178 g with dimensions of 4 cm (height) × 4 cm (diameter) coupled to a metallic magnetic calorimeter (MMC). The detector was also equipped with a light detector with a thin Ge absorber to detect scintillation signals. The detector test measurements showed excellent energy resolution and particle discrimination using dual detection of heat and light signals, and thus demonstrate that the crystal is a promising tool for searching for rare phenomena events. Details of the detector development with the massive sodium molybdate crystal are discussed in this paper along with the performance results from test measurements.

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Low Temperature Property Study of MMCs Used for Neutrinoless Double Beta Decay

Cited by 13 publications

References 29 publications

Simulation Study of Magnetic Microcalorimeters for Rare Event Search Experiments

Simulation Study of Magnetic Microcalorimeters for Rare Event Search Experiments

Superconducting detectors for rare event searches in experimental astroparticle physics

An MMC-based cryogenic calorimeter with a massive sodium molybdate crystal absorber for neutrinoless double beta decay searches

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