Search

Your search keyword '"Jeskovsky M."' showing total 40 results
Start Over Author "Jeskovsky M."
40 results on '"Jeskovsky M."'

1. First observation of single photons in a CRESST detector and new dark matter exclusion limits

Author

CRESST Collaboration, Angloher, G., Banik, S., Benato, G., Bento, A., Bertolini, A., Breier, R., Bucci, C., Burkhart, J., Canonica, L., D'Addabbo, A., Di Lorenzo, S., Einfalt, L., Erb, A., Feilitzsch, F. v., Fichtinger, S., Fuchs, D., Garai, A., Ghete, V. M., Gorla, P., Guillaumon, P. V., Gupta, S., Hauff, D., Ješkovský, M., Jochum, J., Kaznacheeva, M., Kinast, A., Kluck, H., Kraus, H., Kuckuk, S., Langenkämper, A., Mancuso, M., Marini, L., Mauri, B., Meyer, L., Mokina, V., Olmi, M., Ortmann, T., Pagliarone, C., Pattavina, L., Petricca, F., Potzel, W., Povinec, P., Pröbst, F., Pucci, F., Reindl, F., Rothe, J., Schäffner, K., Schieck, J., Schönert, S., Schwertner, C., Stahlberg, M., Stodolsky, L., Strandhagen, C., Strauss, R., Usherov, I., Wagner, F., Wagner, V., and Zema, V.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The main goal of the CRESST-III experiment is the direct detection of dark matter particles via their scattering off target nuclei in cryogenic detectors. In this work we present the results of a Silicon-On-Sapphire (SOS) detector with a mass of 0.6$\,$g and an energy threshold of (6.7$\, \pm \,$0.2)$\,$eV with a baseline energy resolution of (1.0$\, \pm \,$0.2)$\,$eV. This allowed for a calibration via the detection of single luminescence photons in the eV-range, which could be observed in CRESST for the first time. We present new exclusion limits on the spin-independent and spin-dependent dark matter-nucleon cross section that extend to dark matter particle masses of less than 100$\,$MeV/c$^{2}$., Comment: 10 pages, 8 figures

Published
2024

2. DoubleTES detectors to investigate the CRESST low energy background: results from above-ground prototypes

Author

Angloher, G., Banik, S., Benato, G., Bento, A., Bertolini, A., Breier, R., Bucci, C., Burkhart, J., Canonica, L., D'Addabbo, A., Di Lorenzo, S., Einfalt, L., Erb, A., Feilitzsch, F. v., Fichtinger, S., Fuchs, D., Garai, A., Ghete, V. M., Gorla, P., Guillaumon, P. V., Gupta, S., Hauff, D., Ješkovský, M., Jochum, J., Kaznacheeva, M., Kinast, A., Kluck, H., Kraus, H., Kuckuk, S., Langenkämper, A., Mancuso, M., Marini, L., Mauri, B., Meyer, L., Mokina, V., Olmi, M., Ortmann, T., Pagliarone, C., Pattavina, L., Petricca, F., Potzel, W., Povinec, P., Pröbst, F., Pucci, F., Reindl, F., Rothe, J., Schäffner, K., Schieck, J., Schönert, S., Schwertner, C., Stahlberg, M., Stodolsky, L., Strandhagen, C., Strauss, R., Usherov, I., Wagner, F., Wagner, V., and Zema, V.

Subjects
Physics - Instrumentation and Detectors
Abstract

In recent times, the sensitivity of low-mass direct dark matter searches has been limited by unknown low energy backgrounds close to the energy threshold of the experiments known as the low energy excess (LEE). The CRESST experiment utilises advanced cryogenic detectors constructed with different types of crystals equipped with Transition Edge Sensors (TESs) to measure signals of nuclear recoils induced by the scattering of dark matter particles in the detector. In CRESST, this low energy background manifests itself as a steeply rising population of events below 200 eV. A novel detector design named doubleTES using two identical TESs on the target crystal was studied to investigate the hypothesis that the events are sensor-related. We present the first results from two such modules, demonstrating their ability to differentiate between events originating from the crystal's bulk and those occurring in the sensor or in its close proximity., Comment: 10 pages, 13 figures

Published
2024

3. A likelihood framework for cryogenic scintillating calorimeters used in the CRESST dark matter search

Author

CRESST Collaboration, Angloher, G., Banik, S., Benato, G., Bento, A., Bertolini, A., Breier, R., Bucci, C., Burkhart, J., Canonica, L., D'Addabbo, A., Di Lorenzo, S., Einfalt, L., Erb, A., Feilitzsch, F. v., Fichtinger, S., Fuchs, D., Garai, A., Ghete, V. M., Gorla, P., Guillaumon, P. V., Gupta, S., Hauff, D., Ješkovský, M., Jochum, J., Kaznacheeva, M., Kinast, A., Kluck, H., Kraus, H., Kuckuk, S., Langenkämper, A., Mancuso, M., Marini, L., Mauri, B., Meyer, L., Mokina, V., Olmi, M., Ortmann, T., Pagliarone, C., Pattavina, L., Petricca, F., Potzel, W., Povinec, P., Pröbst, F., Pucci, F., Reindl, F., Rothe, J., Schäffner, K., Schieck, J., Schmiedmayer, D., Schönert, S., Schwertner, C., Stahlberg, M., Stodolsky, L., Strandhagen, C., Strauss, R., Usherov, I., Wagner, F., Wagner, V., and Zema, V.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

Cryogenic scintillating calorimeters are ultrasensitive particle detectors for rare event searches, particularly for the search for dark matter and the measurement of neutrino properties. These detectors are made from scintillating target crystals generating two signals for each particle interaction. The phonon (heat) signal precisely measures the deposited energy independent of the type of interacting particle. The scintillation light signal yields particle discrimination on an event-by-event basis. This paper presents a likelihood framework modeling backgrounds and a potential dark matter signal in the two-dimensional plane spanned by phonon and scintillation light energies. We apply the framework to data from CaWO$_4$-based detectors operated in the CRESST dark matter search. For the first time, a single likelihood framework is used in CRESST to model the data and extract results on dark matter in one step by using a profile likelihood ratio test. Our framework simultaneously fits (neutron) calibration data and physics (background) data and allows combining data from multiple detectors. Although tailored to CaWO$_4$-targets and the CRESST experiment, the framework can easily be expanded to other materials and experiments using scintillating cryogenic calorimeters for dark matter search and neutrino physics., Comment: 18 pages, 11 figures, additional figures and data in ancillary files (on arXiv or at journal reference)

Published
2024
Full Text
View/download PDF

4. Detector development for the CRESST experiment

Author

Angloher, G., Banik, S., Benato, G., Bento, A., Bertolini, A., Breier, R., Bucci, C., Burkhart, J., Canonica, L., D'Addabbo, A., Di Lorenzo, S., Einfalt, L., Erb, A., Feilitzsch, F. v., Fichtinger, S., Fuchs, D., Garai, A., Ghete, V. M., Gorla, P., Guillaumon, P. V., Gupta, S., Hauff, D., Ješkovský, M., Jochum, J., Kaznacheeva, M., Kinast, A., Kluck, H., Kraus, H., Kuckuk, S., Langenkaemper, A., Mancuso, M., Marini, L., Mauri, B., Meyer, L., Mokina, V., Olmi, M., Ortmann, T., Pagliarone, C., Pattavina, L., Petricca, F., Potzel, W., Povinec, P., Proebst, F., Pucci, F., Reindl, F., Rothe, J., Schaeffner, K., Schieck, J., Schoenert, S., Schwertner, C., Stahlberg, M., Stodolsky, L., Strandhagen, C., Strauss, R., Usherov, I., Wagner, F., Willers, M., and Zema, V.

Subjects
Physics - Instrumentation and Detectors, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

Recently low-mass dark matter direct searches have been hindered by a low energy background, drastically reducing the physics reach of the experiments. In the CRESST-III experiment, this signal is characterised by a significant increase of events below 200 eV. As the origin of this background is still unknown, it became necessary to develop new detector designs to reach a better understanding of the observations. Within the CRESST collaboration, three new different detector layouts have been developed and they are presented in this contribution., Comment: 8 pages, 4 figures

Published
2023

5. Light Dark Matter Search Using a Diamond Cryogenic Detector

Author

CRESST Collaboration, Angloher, G., Banik, S., Benato, G., Bento, A., Bertolini, A., Breier, R., Bucci, C., Burkhart, J., Canonica, L., D'Addabbo, A., Di Lorenzo, S., Einfalt, L., Erb, A., Feilitzsch, F. v., Fichtinger, S., Fuchs, D., Garai, A., Ghete, V. M., Gorla, P., Guillaumon, P. V., Gupta, S., Hauff, D., Ješkovský, M., Jochum, J., Kaznacheeva, M., Kinast, A., Kluck, H., Kraus, H., Kuckuk, S., Langenkämper, A., Mancuso, M., Marini, L., Mauri, B., Meyer, L., Mokina, V., Olmi, M., Ortmann, T., Pagliarone, C., Pattavina, L., Petricca, F., Potzel, W., Povinec, P., Pröbst, F., Pucci, F., Reindl, F., Rothe, J., Schäffner, K., Schieck, J., Schönert, S., Schwertner, C., Stahlberg, M., Stodolsky, L., Strandhagen, C., Strauss, R., Usherov, I., Wagner, F., Willers, M., and Zema, V.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics, Physics - Instrumentation and Detectors
Abstract

Diamond operated as a cryogenic calorimeter is an excellent target for direct detection of low-mass dark matter candidates. Following the realization of the first low-threshold cryogenic detector that uses diamond as absorber for astroparticle physics applications, we now present the resulting exclusion limits on the elastic spin-independent interaction cross-section of dark matter with diamond. We measured two 0.175 g CVD (Chemical Vapor Deposition) diamond samples, each instrumented with a W-TES. Thanks to the energy threshold of just 16.8 eV of one of the two detectors, we set exclusion limits on the elastic spin-independent interaction of dark matter particles with carbon nuclei down to dark matter masses as low as 0.122 GeV/c2. This work shows the scientific potential of cryogenic detectors made from diamond and lays the foundation for the use of this material as target for direct detection dark matter experiments., Comment: 6 pages, 6 figures

Published
2023

6. High-Dimensional Bayesian Likelihood Normalisation for CRESST's Background Model

Author

Angloher, G., Banik, S., Benato, G., Bento, A., Bertolini, A., Breier, R., Bucci, C., Burkhart, J., Canonica, L., D'Addabbo, A., Di Lorenzo, S., Einfalt, L., Erb, A., Feilitzsch, F. v., Fichtinger, S., Fuchs, D., Garai, A., Ghete, V. M., Gorla, P., Guillaumon, P. V., Gupta, S., Hauff, D., Jeskovsky, M., Jochum, J., Kaznacheeva, M., Kinast, A., Kluck, H., Kraus, H., Kuckuk, S., Langenkaemper, A., Mancuso, M., Marini, L., Meyer, L., Mokina, V., Nilima, A., Olmi, M., Ortmann, T., Pagliarone, C., Pattavina, L., Petricca, F., Potzel, W., Povinec, P., Proebst, F., Pucci, F., Reindl, F., Rothe, J., Schaeffner, K., Schieck, J., Schmiedmayer, D., Schoenert, S., Schwertner, C., Stahlberg, M., Stodolsky, L., Strandhagen, C., Strauss, R., Usherov, I., Wagner, F., Willers, M., Zema, V., Ferella, F., Laubenstein, M., and Nisi, S.

Subjects
Physics - Instrumentation and Detectors, Astrophysics - Instrumentation and Methods for Astrophysics, High Energy Physics - Experiment
Abstract

Using CaWO$_4$ crystals as cryogenic calorimeters, the CRESST experiment searches for nuclear recoils caused by the scattering of potential Dark Matter particles. A reliable identification of a potential signal crucially depends on an accurate background model. In this work we introduce an improved normalisation method for CRESST's model of the electromagnetic backgrounds. Spectral templates, based on Geant4 simulations, are normalised via a Bayesian likelihood fit to experimental background data. Contrary to our previous work, no assumption of partial secular equilibrium is required, which results in a more robust and versatile applicability. Furthermore, considering the correlation between all background components allows us to explain 82.7% of the experimental background within [1 keV, 40 keV], an improvement of 18.6% compared to our previous method., Comment: 24 pages, 14 figures, submitted to EPJC

Published
2023

7. Observation of a low energy nuclear recoil peak in the neutron calibration data of the CRESST-III Experiment

Author

CRESST Collaboration, Angloher, G., Banik, S., Benato, G., Bento, A., Bertolini, A., Breier, R., Bucci, C., Burkhart, J., Canonica, L., D'Addabbo, A., Di Lorenzo, S., Einfalt, L., Erb, A., Feilitzsch, F. v., Fichtinger, S., Fuchs, D., Fuss, A., Garai, A., Ghete, V. M., Gerster, S., Gorla, P., Guillaumon, P. V., Gupta, S., Hauff, D., Ješkovský, M., Jochum, J., Kaznacheeva, M., Kinast, A., Kluck, H., Kraus, H., Langenkämper, A., Mancuso, M., Marini, L., Meyer, L., Mokina, V., Nilima, A., Olmi, M., Ortmann, T., Pagliarone, C., Pattavina, L., Petricca, F., Potzel, W., Povinec, P., Pröbst, F., Pucci, F., Reindl, F., Rothe, J., Schäffner, K., Schieck, J., Schmiedmayer, D., Schönert, S., Schwertner, C., Stahlberg, M., Stodolsky, L., Strandhagen, C., Strauss, R., Usherov, I., Wagner, F., Willers, M., and Zema, V.

Subjects
Physics - Instrumentation and Detectors
Abstract

New-generation direct searches for low mass dark matter feature detection thresholds at energies well below 100 eV, much lower than the energies of commonly used X-ray calibration sources. This requires new calibration sources with sub-keV energies. When searching for nuclear recoil signals, the calibration source should ideally cause mono-energetic nuclear recoils in the relevant energy range. Recently, a new calibration method based on the radiative neutron capture on $^{182}$W with subsequent de-excitation via single $\gamma$-emission leading to a nuclear recoil peak at 112 eV was proposed. The CRESST-III dark matter search operated several CaWO$_{4}$-based detector modules with detection thresholds below 100 eV in the past years. We report the observation of a peak around the expected energy of 112 eV in the data of three different detector modules recorded while irradiated with neutrons from different AmBe calibration sources. We compare the properties of the observed peaks with Geant-4 simulations and assess the prospects of using this for the energy calibration of CRESST-III detectors., Comment: 8 pages, 4 figures; submitted to Phys. Rev. D

Published
2023
Full Text
View/download PDF

8. Results on sub-GeV Dark Matter from a 10 eV Threshold CRESST-III Silicon Detector

Author

CRESST Collaboration, Angloher, G., Banik, S., Benato, G., Bento, A., Bertolini, A., Breier, R., Bucci, C., Burkhart, J., Canonica, L., D'Addabbo, A., Di Lorenzo, S., Einfalt, L., Erb, A., Feilitzsch, F. v., Iachellini, N. Ferreiro, Fichtinger, S., Fuchs, D., Fuss, A., Garai, A., Ghete, V. M., Gerster, S., Gorla, P., Guillaumon, P. V., Gupta, S., Hauff, D., Ješkovský, M., Jochum, J., Kaznacheeva, M., Kinast, A., Kluck, H., Kraus, H., Langenkämper, A., Mancuso, M., Marini, L., Meyer, L., Mokina, V., Nilima, A., Olmi, M., Ortmann, T., Pagliarone, C., Pattavina, L., Petricca, F., Potzel, W., Povinec, P., Pröbst, F., Pucci, F., Reindl, F., Rothe, J., Schäffner, K., Schieck, J., Schmiedmayer, D., Schönert, S., Schwertner, C., Stahlberg, M., Stodolsky, L., Strandhagen, C., Strauss, R., Usherov, I., Wagner, F., Willers, M., and Zema, V.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present limits on the spin-independent interaction cross section of dark matter particles with silicon nuclei, derived from data taken with a cryogenic calorimeter with 0.35 g target mass operated in the CRESST-III experiment. A baseline nuclear recoil energy resolution of $(1.36\pm 0.05)$ eV$_{\text{nr}}$, currently the lowest reported for macroscopic particle detectors, and a corresponding energy threshold of $(10.0\pm 0.2)$ eV$_{\text{nr}}$ have been achieved, improving the sensitivity to light dark matter particles with masses below 160 MeV/c$^2$ by a factor of up to 20 compared to previous results. We characterize the observed low energy excess, and we exclude noise triggers and radioactive contaminations on the crystal surfaces as dominant contributions., Comment: 8 pages, 5 figures; precised the position of the calibration source in Fig. 1; extended the discussion about the observed energy spectrum; added the DM limit curve to ancillary files. Published in Phys. Rev. D

Published
2022
Full Text
View/download PDF

9. Towards an automated data cleaning with deep learning in CRESST

Author

Angloher, G., Banik, S., Bartolot, D., Benato, G., Bento, A., Bertolini, A., Breier, R., Bucci, C., Burkhart, J., Canonica, L., D'Addabbo, A., Di Lorenzo, S., Einfalt, L., Erb, A., Feilitzsch, F. v., Iachellini, N. Ferreiro, Fichtinger, S., Fuchs, D., Fuss, A., Garai, A., Ghete, V. M., Gerster, S., Gorla, P., Guillaumon, P. V., Gupta, S., Hauff, D., Ješkovský, M., Jochum, J., Kaznacheeva, M., Kinast, A., Kluck, H., Kraus, H., Lackner, M., Langenkämper, A., Mancuso, M., Marini, L., Meyer, L., Mokina, V., Nilima, A., Olmi, M., Ortmann, T., Pagliarone, C., Pattavina, L., Petricca, F., Potzel, W., Povinec, P., Pröbst, F., Pucci, F., Reindl, F., Rizvanovic, D., Rothe, J., Schäffner, K., Schieck, J., Schmiedmayer, D., Schönert, S., Schwertner, C., Stahlberg, M., Stodolsky, L., Strandhagen, C., Strauss, R., Usherov, I., Wagner, F., Willers, M., Zema, V., and Waltenberger, W.

Subjects
Physics - Instrumentation and Detectors, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The CRESST experiment employs cryogenic calorimeters for the sensitive measurement of nuclear recoils induced by dark matter particles. The recorded signals need to undergo a careful cleaning process to avoid wrongly reconstructed recoil energies caused by pile-up and read-out artefacts. We frame this process as a time series classification task and propose to automate it with neural networks. With a data set of over one million labeled records from 68 detectors, recorded between 2013 and 2019 by CRESST, we test the capability of four commonly used neural network architectures to learn the data cleaning task. Our best performing model achieves a balanced accuracy of 0.932 on our test set. We show on an exemplary detector that about half of the wrongly predicted events are in fact wrongly labeled events, and a large share of the remaining ones have a context-dependent ground truth. We furthermore evaluate the recall and selectivity of our classifiers with simulated data. The results confirm that the trained classifiers are well suited for the data cleaning task., Comment: 12 pages, 8 figures, 6 tables

Published
2022
Full Text
View/download PDF

10. Secular Equilibrium Assessment in a $\mathrm{CaWO}_4$ Target Crystal from the Dark Matter Experiment CRESST using Bayesian Likelihood Normalisation

Author

Angloher, G., Banik, S., Benato, G., Bento, A., Bertolini, A., Breier, R., Bucci, C., Burkhart, J., Canonica, L., D'Addabbo, A., Di Lorenzo, S., Einfalt, L., Erb, A., Feilitzsch, F. v., Iachellini, N. Ferreiro, Fichtinger, S., Fuchs, D., Fuss, A., Garai, A., Ghete, V. M., Gorla, P., Gupta, S., Hauff, D., Ješkovský, M., Jochum, J., Kaznacheeva, M., Kinast, A., Kluck, H., Kraus, H., Langenkämper, A., Mancuso, M., Marini, L., Mokina, V., Nilima, A., Olmi, M., Ortmann, T., Pagliarone, C., Pattavina, L., Petricca, F., Potzel, W., Povinec, P., Pröbst, F., Pucci, F., Reindl, F., Rothe, J., Schäffner, K., Schieck, J., Schmiedmayer, D., Schönert, S., Schwertner, C., Stahlberg, M., Stodolsky, L., Strandhagen, C., Strauss, R., Usherov, I., Wagner, F., Willers, M., Zema, V., Ferella, F., Laubenstein, M., and Nisi, S.

Subjects
Physics - Instrumentation and Detectors, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

CRESST is a leading direct detection sub-$\mathrm{GeVc}^{-2}$ dark matter experiment. During its second phase, cryogenic bolometers were used to detect nuclear recoils off the $\mathrm{CaWO}_4$ target crystal nuclei. The previously established electromagnetic background model relies on secular equilibrium (SE) assumptions. In this work, a validation of SE is attempted by comparing two likelihood-based normalisation results using a recently developed spectral template normalisation method based on Bayesian likelihood. We find deviations from SE; further investigations are necessary to determine their origin., Comment: Part of special issue: ICRM-LLRMT22 8th International Conference on Radionuclide Metrology - Low Level Radioactivity Measurement and Techniques, 6 pages, 3 figures

Published
2022
Full Text
View/download PDF

11. Latest observations on the low energy excess in CRESST-III

Author

Angloher, G., Banik, S., Benato, G., Bento, A., Bertolini, A., Breier, R., Bucci, C., Canonica, L., D'Addabbo, A., Di Lorenzo, S., Einfalt, L., Erb, A., Feilitzsch, F. v., Iachellini, N. Ferreiro, Fichtinger, S., Fuchs, D., Fuss, A., Garai, A., Ghete, V. M., Gerster, S., Gorla, P., Guillaumon, P. V., Gupta, S., Hauff, D., Ješkovský, M., Jochum, J., Kaznacheeva, M., Kinast, A., Kluck, H., Kraus, H., Langenkämper, A., Mancuso, M., Marini, L., Meyer, L., Mokina, V., Nilima, A., Olmi, M., Ortmann, T., Pagliarone, C., Pattavina, L., Petricca, F., Potzel, W., Povinec, P., Pröbst, F., Pucci, F., Reindl, F., Rothe, J., Schäffner, K., Schieck, J., Schmiedmayer, D., Schönert, S., Schwertner, C., Stahlberg, M., Stodolsky, L., Strandhagen, C., Strauss, R., Usherov, I., Wagner, F., Willers, M., and Zema, V.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The CRESST experiment observes an unexplained excess of events at low energies. In the current CRESST-III data-taking campaign we are operating detector modules with different designs to narrow down the possible explanations. In this work, we show first observations of the ongoing measurement, focusing on the comparison of time, energy and temperature dependence of the excess in several detectors. These exclude dark matter, radioactive backgrounds and intrinsic sources related to the crystal bulk as a major contribution., Comment: 10 pages, 5 figures; to be published in IDM2022 proceedings; corrected several minor typos

Published
2022
Full Text
View/download PDF

12. Testing spin-dependent dark matter interactions with lithium aluminate targets in CRESST-III

Author

Angloher, G., Banik, S., Benato, G., Bento, A., Bertolini, A., Breier, R., Bucci, C., Burkhart, J., Canonica, L., D'Addabbo, A., Di Lorenzo, S., Einfalt, L., Erb, A., Feilitzsch, F. v., Iachellini, N. Ferreiro, Fichtinger, S., Fuchs, D., Fuss, A., Garai, A., Ghete, V. M., Gerster, S., Gorla, P., Guillaumon, P. V., Gupta, S., Hauff, D., Ješkovský, M., Jochum, J., Kaznacheeva, M., Kinast, A., Kluck, H., Kraus, H., Langenkämper, A., Mancuso, M., Marini, L., Meyer, L., Mokina, V., Nilima, A., Olmi, M., Ortmann, T., Pagliarone, C., Pattavina, L., Petricca, F., Potzel, W., Povinec, P., Pröbst, F., Pucci, F., Reindl, F., Rothe, J., Schäffner, K., Schieck, J., Schmiedmayer, D., Schönert, S., Schwertner, C., Stahlberg, M., Stodolsky, L., Strandhagen, C., Strauss, R., Usherov, I., Wagner, F., Willers, M., and Zema, V.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

In the past decades, numerous experiments have emerged to unveil the nature of dark matter, one of the most discussed open questions in modern particle physics. Among them, the CRESST experiment, located at the Laboratori Nazionali del Gran Sasso, operates scintillating crystals as cryogenic phonon detectors. In this work, we present first results from the operation of two detector modules which both have 10.46 g LiAlO$_2$ targets in CRESST-III. The lithium contents in the crystal are $^6$Li, with an odd number of protons and neutrons, and $^7$Li, with an odd number of protons. By considering both isotopes of lithium and $^{27}$Al, we set the currently strongest cross section upper limits on spin-dependent interaction of dark matter with protons and neutrons for the mass region between 0.25 and 1.5 GeV/c$^2$., Comment: 9 pages, 8 figures

Published
2022
Full Text
View/download PDF

13. EXCESS workshop: Descriptions of rising low-energy spectra

Author

Adari, P., Aguilar-Arevalo, A., Amidei, D., Angloher, G., Armengaud, E., Augier, C., Balogh, L., Banik, S., Baxter, D., Beaufort, C., Beaulieu, G., Belov, V., Gal, Y. Ben, Benato, G., Benoît, A., Bento, A., Bergé, L., Bertolini, A., Bhattacharyya, R., Billard, J., Bloch, I. M., Botti, A., Breier, R., Bres, G., Bret, J-. L., Broniatowski, A., Brossard, A., Bucci, C., Bunker, R., Cababie, M., Calvo, M., Camus, P., Cancelo, G., Canonica, L., Cappella, F., Cardani, L., Caron, J. -F., Casali, N., del Castello, G., Cazes, A., Cerulli, R., Vergara, B. A. Cervantes, Chaize, D., Chapellier, M., Chaplinsky, L., Charlieux, F., Chaudhuri, M., Chavarria, A. E., Chemin, G., Chen, R., Chen, H., Chierchie, F., Colantoni, I., Colas, J., Cooley, J., Coquillat, J. -M., Corcoran, E. C., Crawford, S., Crisler, M., Cruciani, A., Cushman, P., D'Addabbo, A., D'Olivo, J. C., Dastgheibi-Fard, A., De Jésus, M., Deng, Y., Dent, J. B., Depaoli, E. L., Dering, K., Dharani, S., Di Lorenzo, S., Drlica-Wagner, A., Dumoulin, L., Durnford, D., Dutta, B., Einfalt, L., Erb, A., Erhart, A., Essig, R., Estrada, J., Etzion, E., Exshaw, O., Favela-Perez, F., Feilitzsch, F. v., Moroni, G. Fernandez, Iachellini, N. Ferreiro, Ferriol, S., Fichtinger, S., Figueroa-Feliciano, E., Filippini, J. -B., Filosofov, D., Formaggio, J. A., Friedl, M., Fuard, S., Fuchs, D., Fuss, A., Gaïor, R., Garai, A., Garrah, C., Gascon, J., Gerbier, G., Ghaith, M., Ghete, V. M., Gift, D., Giomataris, I., Giroux, G., Giuliani, A., Gorel, P., Gorla, P., Goupy, C., Goupy, J., Goy, C., Gros, M., Gros, P., Guardincerri, Y., Guerin, C., Guidi, V., Guillaudin, O., Gupta, S., Guy, E., Harrington, P., Hauff, D., Heine, S. T., Hertel, S. A., Holland, S. E., Hong, Z., Hoppe, E. W., Hossbach, T. W., Ianigro, J. -C., Iyer, V., Jastram, A., Ješkovský, M., Jin, Y., Jochum, J., Johnston, J. P., Juillard, A., Karaivanov, D., Kashyap, V., Katsioulas, I., Kazarcev, S., Kaznacheeva, M., Kelly, F., Kilminster, B., Kinast, A., Klinkenberg, L., Kluck, H., Knights, P., Korn, Y., Kraus, H., von Krosigk, B., Kubik, A., Kurinsky, N. A., Lamblin, J., Langenkämper, A., Langrock, S., Lasserre, T., Lattaud, H., Lautridou, P., Lawson, I., Lee, S. J., Lee, M., Letessier-Selvon, A., Lhuillier, D., Li, M., Lin, Y. -T., Lubashevskiy, A., Mahapatra, R., Maludze, S., Mancuso, M., Manthos, I., Marini, L., Marnieros, S., Martin, R. D., Matalon, A., Matthews, J., Mauri, B., Mayer, D. W., Mazzolari, A., Mazzucato, E., Theenhausen, H. Meyer zu, Michielin, E., Minet, J., Mirabolfathi, N., Mirbach, K. v., Misiak, D., Mitra, P., Mocellin, J-. L., Mohanty, B., Mokina, V., Mols, J. -P., Monfardini, A., Mounier, F., Munagavalasa, S., Muraz, J. -F., Navick, X. -F., Neep, T., Neog, H., Neyrial, H., Nikolopoulos, K., Nilima, A., Nones, C., Novati, V., O'Brien, P., Oberauer, L., Olivieri, E., Olmi, M., Onillon, A., Oriol, C., Orly, A., Orrell, J. L., Ortmann, T., Overman, C. T., Pagliarone, C., Palušová, V., Pari, P., Patel, P. K., Pattavina, L., Petricca, F., Piers, A., Pinckney, H. D., Piro, M. -C., Platt, M., Poda, D., Ponomarev, D., Potzel, W., Povinec, P., Pröbst, F., Privitera, P., Pucci, F., Ramanathan, K., Real, J. -S., Redon, T., Reindl, F., Ren, R., Robert, A., Da Rocha, J., Rodrigues, D., Rogly, R., Rothe, J., Rowe, N., Rozov, S., Rozova, I., Saab, T., Saffold, N., Salagnac, T., Sander, J., Sanglard, V., Santos, D., Sarkis, Y., Savu, V., Savvidis, G., Savvidis, I., Schönert, S., Schäffner, K., Schermer, N., Schieck, J., Schmidt, B., Schmiedmayer, D., Schwertner, C., Scola, L., Settimo, M., Shevchik, Ye., Sibille, V., Sidelnik, I., Singal, A., Smida, R., Haro, M. Sofo, Soldner, T., Stachurska, J., Stahlberg, M., Stefanazzi, L., Stodolsky, L., Strandhagen, C., Strauss, R., Stutz, A., Thomas, R., Thompson, A., Tiffenberg, J., Tomei, C., Traina, M., Uemura, S., Usherov, I., Vagneron, L., Van De Pontseele, W., Fernandez, F. A. Vazquez de Sola, Vidal, M., Vignati, M., Virto, A. L., Vivier, M., Volansky, T., Wagner, V., Wagner, F., Walker, J., Ward, R., Watkins, S. L., Wex, A., Willers, M., Wilson, M. J., Winslow, L., Yakushev, E., Yu, T. -T., Zampaolo, M., Zaytsev, A., Zema, V., Zinatulina, D., and Zolotarova, A.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Physics - Instrumentation and Detectors
Abstract

Many low-threshold experiments observe sharply rising event rates of yet unknown origins below a few hundred eV, and larger than expected from known backgrounds. Due to the significant impact of this excess on the dark matter or neutrino sensitivity of these experiments, a collective effort has been started to share the knowledge about the individual observations. For this, the EXCESS Workshop was initiated. In its first iteration in June 2021, ten rare event search collaborations contributed to this initiative via talks and discussions. The contributing collaborations were CONNIE, CRESST, DAMIC, EDELWEISS, MINER, NEWS-G, NUCLEUS, RICOCHET, SENSEI and SuperCDMS. They presented data about their observed energy spectra and known backgrounds together with details about the respective measurements. In this paper, we summarize the presented information and give a comprehensive overview of the similarities and differences between the distinct measurements. The provided data is furthermore publicly available on the workshop's data repository together with a plotting tool for visualization., Comment: 44 pages, 20 figures; Editors: A. Fuss, M. Kaznacheeva, F. Reindl, F. Wagner; updated copyright statements and funding information

Published
2022
Full Text
View/download PDF

14. Probing spin-dependent dark matter interactions with $^6$Li

Author

Angloher, G., Benato, G., Bento, A., Bertoldo, E., Bertolini, A., Breier, R., Bucci, C., Canonica, L., D'Addabbo, A., Di Lorenzo, S., Einfalt, L., Erb, A., Feilitzsch, F. v., Iachellini, N. Ferreiro, Fichtinger, S., Fuchs, D., Fuss, A., Garai, A., Ghete, V. M., Gorla, P., Gupta, S., Hauff, D., Ješkovský, M., Jochum, J., Kaznacheeva, M., Kinast, A., Kluck, H., Kraus, H., Langenkämper, A., Mancuso, M., Marini, L., Mokina, V., Nilima, A., Olmi, M., Ortmann, T., Pagliarone, C., Palušová, V., Pattavina, L., Petricca, F., Potzel, W., Povinec, P., Pröbst, F., Pucci, F., Reindl, F., Rothe, J., Schäffner, K., Schieck, J., Schmiedmayer, D., Schönert, S., Schwertner, C., Stahlberg, M., Stodolsky, L., Strandhagen, C., Strauss, R., Usherov, I., Wagner, F., Willers, M., and Zema, V.

Subjects
Physics - Instrumentation and Detectors, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

CRESST is one of the most prominent direct detection experiments for dark matter particles with sub-GeV/c$^2$ mass. One of the advantages of the CRESST experiment is the possibility to include a large variety of nuclides in the target material used to probe dark matter interactions. In this work, we discuss in particular the interactions of dark matter particles with protons and neutrons of $^{6}$Li. This is now possible thanks to new calculations on nuclear matrix elements of this specific isotope of Li. To show the potential of using this particular nuclide for probing dark matter interactions, we used the data collected previously by a CRESST prototype based on LiAlO$_2$ and operated in an above ground test-facility at Max-Planck-Institut f\"ur Physik in Munich, Germany. In particular, the inclusion of $^{6}$Li in the limit calculation drastically improves the result obtained for spin-dependent interactions with neutrons in the whole mass range. The improvement is significant, greater than two order of magnitude for dark matter masses below 1 GeV/c$^2$, compared to the limit previously published with the same data.

Published
2022
Full Text
View/download PDF

16. Cryogenic characterization of a LiAlO$_{2}$ crystal and new results on spin-dependent dark matter interactions with ordinary matter

Author

Abdelhameed, A. H., Angloher, G., Bauer, P., Bento, A., Bertoldo, E., Breier, R., Bucci, C., Canonica, L., D'Addabbo, A., Di Lorenzo, S., Erb, A., Feilitzsch, F. v., Iachellini, N. Ferreiro, Fichtinger, S., Fuchs, D., Fuss, A., Ghete, V. M., Garai, A., Gorla, P., Hauff, D., Ješkovský, M., Jochum, J., Kaizer, J., Kaznacheeva, M., Kinast, A., Kluck, H., Kraus, H., Langenkämper, A., Mancuso, M., Mokina, V., Mondragon, E., Olmi, M., Ortmann, T., Pagliarone, C., Palušová, V., Pattavina, L., Petricca, F., Potzel, W., Povinec, P., Pröbst, F., Reindl, F., Rothe, J., Schäffner, K., Schieck, J., Schipperges, V., Schmiedmayer, D., Schönert, S., Schwertner, C., Stahlberg, M., Stodolsky, L., Strandhagen, C., Strauss, R., Usherov, I., Wagner, F., Willers, M., Zema, V., Zeman, J., Brützam, M., and Ganschow, S.

Subjects
Physics - Instrumentation and Detectors, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

In this work, a first cryogenic characterization of a scintillating LiAlO$_{2}$ single crystal is presented. The results achieved show that this material holds great potential as a target for direct dark matter search experiments. Three different detector modules obtained from one crystal grown at the Leibniz-Institut f\"ur Kristallz\"uchtung (IKZ) have been tested to study different properties at cryogenic temperatures. Firstly, two 2.8 g twin crystals were used to build different detector modules which were operated in an above-ground laboratory at the Max Planck Institute for Physics (MPP) in Munich, Germany. The first detector module was used to study the scintillation properties of LiAlO$_{2}$ at cryogenic temperatures. The second achieved an energy threshold of (213.02$\pm$1.48) eV which allows setting a competitive limit on the spin-dependent dark matter particle-proton scattering cross section for dark matter particle masses between 350 MeV/c$^{2}$ and 1.50 GeV/c$^{2}$. Secondly, a detector module with a 373 g LiAlO$_{2}$ crystal as the main absorber was tested in an underground facility at the Laboratori Nazionali del Gran Sasso (LNGS): from this measurement it was possible to determine the radiopurity of the crystal and study the feasibility of using this material as a neutron flux monitor for low-background experiments.

Published
2020
Full Text
View/download PDF

17. Geant4-based electromagnetic background model for the CRESST dark matter experiment

Author

CRESST Collaboration, Abdelhameed, A. H., Angloher, G., Bauer, P., Bento, A., Bertoldo, E., Breier, R., Bucci, C., Canonica, L., D'Addabbo, A., Di Lorenzo, S., Erb, A., Feilitzsch, F. v., Iachellini, N. Ferreiro, Fichtinger, S., Fuss, A., Gorla, P., Hauff, D., Ješkovský, M., Jochum, J., Kaizer, J., Kinast, A., Kluck, H., Kraus, H., Langenkämper, A., Mancuso, M., Mokina, V., Mondragón, E., Olmi, M., Ortmann, T., Pagliarone, C., Palušová, V., Pattavina, L., Petricca, F., Potzel, W., Povinec, P., Pröbst, F., Reindl, F., Rothe, J., Schäffner, K., Schieck, J., Schipperges, V., Schmiedmayer, D., Schönert, S., Schwertner, C., Stahlberg, M., Stodolsky, L., Strandhagen, C., Strauss, R., Türkoğlu, C., Usherov, I., Willers, M., Zema, V., and Zeman, J.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The CRESST (Cryogenic Rare Event Search with Superconducting Thermometers) dark matter search experiment aims for the detection of dark matter particles via elastic scattering off nuclei in $\mathrm{CaWO_4}$ crystals. To understand the CRESST electromagnetic background due to the bulk contamination in the employed materials, a model based on Monte Carlo simulations was developed using the Geant4 simulation toolkit. The results of the simulation are applied to the TUM40 detector module of CRESST-II phase 2. We are able to explain up to $(68 \pm 16)\,\mathrm{\%}$ of the electromagnetic background in the energy range between $1\,\mathrm{keV}$ and $40\,\mathrm{keV}$., Comment: 19 pages, 12 figures

Published
2019
Full Text
View/download PDF

18. Secular equilibrium assessment in a CaWO4 target crystal from the dark matter experiment CRESST using Bayesian likelihood normalisation

Author

Angloher, G., Banik, S., Benato, G., Bento, A., Bertolini, A., Breier, R., Bucci, C., Burkhart, J., Canonica, L., D’Addabbo, A., Di Lorenzo, S., Einfalt, L., Erb, A., Feilitzsch, F.v., Ferreiro Iachellini, N., Fichtinger, S., Fuchs, D., Fuss, A., Garai, A., Ghete, V.M., Gorla, P., Gupta, S., Hauff, D., Ješkovský, M., Jochum, J., Kaznacheeva, M., Kinast, A., Kluck, H., Kraus, H., Langenkämper, A., Mancuso, M., Marini, L., Mokina, V., Nilima, A., Olmi, M., Ortmann, T., Pagliarone, C., Pattavina, L., Petricca, F., Potzel, W., Povinec, P., Pröbst, F., Pucci, F., Reindl, F., Rothe, J., Schäffner, K., Schieck, J., Schmiedmayer, D., Schönert, S., Schwertner, C., Stahlberg, M., Stodolsky, L., Strandhagen, C., Strauss, R., Usherov, I., Wagner, F., Willers, M., Zema, V., Ferella, F., Laubenstein, M., and Nisi, S.

Published
2023
Full Text
View/download PDF

19. The Large Enriched Germanium Experiment for Neutrinoless Double Beta Decay (LEGEND)

Author

LEGEND Collaboration, Abgrall, N., Abramov, A., Abrosimov, N., Abt, I., Agostini, M., Agartioglu, M., Ajjaq, A., Alvis, S. I., Avignone III, F. T., Bai, X., Balata, M., Barabanov, I., Barabash, A. S., Barton, P. J., Baudis, L., Bezrukov, L., Bode, T., Bolozdynya, A., Borowicz, D., Boston, A., Boston, H., Boyd, S. T. P., Breier, R., Brudanin, V., Brugnera, R., Busch, M., Buuck, M., Caldwell, A., Caldwell, T. S., Camellato, T., Carpenter, M., Cattadori, C., Cederkäll, J., Chan, Y. -D., Chen, S., Chernogorov, A., Christofferson, C. D., Chu, P. -H., Cooper, R. J., Cuesta, C., Demidova, E. V., Deng, Z., Deniz, M., Detwiler, J. A., Di Marco, N., Domula, A., Du, Q., Efremenko, Yu., Egorov, V., Elliott, S. R., Fields, D., Fischer, F., Galindo-Uribarri, A., Gangapshev, A., Garfagnini, A., Gilliss, T., Giordano, M., Giovanetti, G. K., Gold, M., Golubev, P., Gooch, C., Grabmayr, P., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Gurentsov, V., Gurov, Y., Gusev, K., Hakenmüeller, J., Harkness-Brennan, L., Harvey, Z. R., Haufe, C. R., Hauertmann, L., Heglund, D., Hehn, L., Heinz, A., Hiller, R., Hinton, J., Hodak, R., Hofmann, W., Howard, S., Howe, M. A., Hult, M., Inzhechik, L. V., Csáthy, J. Janicskó, Janssens, R., Ješkovský, M., Jochum, J., Johansson, H. T., Judson, D., Junker, M., Kaizer, J., Kang, K., Kazalov, V., Kermaïdic, Y., Kiessling, F., Kirsch, A., Kish, A., Klimenko, A., Knöpfle, K. T. K. T., Kochetov, O., Konovalov, S. I., Kontul, I., Kornoukhov, V. N., Kraetzschmar, T., Kröninger, K., Kumar, A., Kuzminov, V. V., Lang, K., Laubenstein, M., Lazzaro, A., Li, Y. L., Li, Y. -Y., Li, H. B., Lin, S. T., Lindner, M., Lippi, I., Liu, S. K., Liu, X., Liu, J., Loomba, D., Lubashevskiy, A., Lubsandorzhiev, B., Lutter, G., Ma, H., Majorovits, B., Mamedov, F., Martin, R. D., Massarczyk, R., Matthews, J. A. J., McFadden, N., Mei, D. -M., Mei, H., Meijer, S. J., Mengoni, D., Mertens, S., Miller, W., Miloradovic, M., Mingazheva, R., Misiaszek, M., Moseev, P., Myslik, J., Nemchenok, I., Nilsson, T., Nolan, P., O'Shaughnessy, C., Othman, G., Panas, K., Pandola, L., Papp, L., Pelczar, K., Peterson, D., Pettus, W., Poon, A. W. P., Povinec, P. P., Pullia, A., Quintana, X. C., Radford, D. C., Rager, J., Ransom, C., Recchia, F., Reine, A. L., Riboldi, S., Rielage, K., Rozov, S., Rouf, N. W., Rukhadze, E., Rumyantseva, N., Saakyan, R., Sala, E., Salamida, F., Sandukovsky, V., Savard, G., Schönert, S., Schütz, A. -K., Schulz, O., Schuster, M., Schwingenheuer, B., Selivanenko, O., Sevda, B., Shanks, B., Shevchik, E., Shirchenko, M., Simkovic, F., Singh, L., Singh, V., Skorokhvatov, M., Smolek, K., Smolnikov, A., Sonay, A., Spavorova, M., Stekl, I., Stukov, D., Tedeschi, D., Thompson, J., Van Wechel, T., Varner, R. L., Vasenko, A. A., Vasilyev, S., Veresnikova, A., Vetter, K., von Sturm, K., Vorren, K., Wagner, M., Wang, G. -J., Waters, D., Wei, W. -Z., Wester, T., White, B. R., Wiesinger, C., Wilkerson, J. F., Willers, M., Wiseman, C., Wojcik, M., Wong, H. T., Wyenberg, J., Xu, W., Yakushev, E., Yang, G., Yu, C. -H., Yue, Q., Yumatov, V., Zeman, J., Zeng, Z., Zhitnikov, I., Zhu, B., Zinatulina, D., Zschocke, A., Zsigmond, A. J., Zuber, K., and Zuzel, G.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment, Nuclear Experiment
Abstract

The observation of neutrinoless double-beta decay (0${\nu}{\beta}{\beta}$) would show that lepton number is violated, reveal that neutrinos are Majorana particles, and provide information on neutrino mass. A discovery-capable experiment covering the inverted ordering region, with effective Majorana neutrino masses of 15 - 50 meV, will require a tonne-scale experiment with excellent energy resolution and extremely low backgrounds, at the level of $\sim$0.1 count /(FWHM$\cdot$t$\cdot$yr) in the region of the signal. The current generation $^{76}$Ge experiments GERDA and the MAJORANA DEMONSTRATOR utilizing high purity Germanium detectors with an intrinsic energy resolution of 0.12%, have achieved the lowest backgrounds by over an order of magnitude in the 0${\nu}{\beta}{\beta}$ signal region of all 0${\nu}{\beta}{\beta}$ experiments. Building on this success, the LEGEND collaboration has been formed to pursue a tonne-scale $^{76}$Ge experiment. The collaboration aims to develop a phased 0${\nu}{\beta}{\beta}$ experimental program with discovery potential at a half-life approaching or at $10^{28}$ years, using existing resources as appropriate to expedite physics results., Comment: Proceedings of the MEDEX'17 meeting (Prague, May 29 - June 2, 2017)

Published
2017
Full Text
View/download PDF

20. Reference material for natural radionuclides in glass designed for underground experiments

Author

Povinec, P. P., Pham, M. K., Busto, J., Cerna, C., Degering, D., Hamajima, Y., Holy, K., Hult, M., Jeskovsky, M., Koehler, M., Kovacik, A., Laubenstein, M., Loaiza, P., Mamedov, F., Marquet, C., Mott, J., Mullerova, M., Perrot, F., Piquemal, F., Reyss, J. -L., Saakyan, R., Simgen, H., Soule, B., Stanicek, J., Sykora, I., and Stekl, I.

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment
Abstract

A reference material designed for the determination of natural radionuclides in solid samples (glass pellets) is described and the results of certification are presented. The material has been certified for 7 natural radionuclides (40K, 226Ra, 228Ra, 228Th, 232Th, 235U and 238U). An information value is given for 210Pb. Radon (222Rn) emanation experiments showed results comparable within participating laboratories, however, the number of data and precision was too low to carry out a certification process. The reference material may be used for quality management of analytical laboratories engaged in the high-sensitive analysis of radionuclides in the construction materials of detectors placed in ultra low background underground laboratories., Comment: 13 pages 6 tables, 3 figures

Published
2015

21. A search for double-electron capture in 74Se using coincidence/anticoincidence gamma-ray spectrometry

Author

Jeskovsky, M., Frekers, D., Kovacik, A., Povinec, P. P., Puppe, P., Stanicek, J., Sykora, I., Simkovic, F., and Thies, J. H.

Subjects
Nuclear Experiment, Physics - Instrumentation and Detectors
Abstract

Evaluation of single, coincidence and anticoincidence gamma-ray spectrometry methods has been carried out with the aim to search for double-electron capture in 74Se. This process is unique, because there is probability for transition to the 2+ excited state in 74Ge (1204 keV), and de-excitation through two gamma-quanta cascade with energies of 595.9 keV and 608.4 keV. Long-term measurements with anticosmic shielded HPGe spectrometer and the coincidence HPGe-NaI(Tl) spectrometer did not show any evidence for the double-electron capture in 74Se. The best limit for the half-life of the double electron capture in 74Se (both for the neutrinoless and two neutrino processes) was estimated to be >1.5x10E19 years., Comment: 11 pages, 3 tables, 5 figures

Published
2015
Full Text
View/download PDF

22. Results on sub-GeV dark matter from a 10 eV threshold CRESST-III silicon detector

Author

Angloher, G, Banik, S, Benato, G, Bento, A, Bertolini, A, Breier, R, Bucci, C, Burkhart, J, Canonica, L, D'Addabbo, A, Di Lorenzo, S, Einfalt, L, Erb, A, Feilitzsch, F, Ferreiro Iachellini, N, Fichtinger, S, Fuchs, D, Fuss, A, Garai, A, Ghete, V, Gerster, S, Gorla, P, Guillaumon, P, Gupta, S, Hauff, D, Jeskovsky, M, Jochum, J, Kaznacheeva, M, Kinast, A, Kluck, H, Kraus, H, Langenkamper, A, Mancuso, M, Marini, L, Meyer, L, Mokina, V, Nilima, A, Olmi, M, Ortmann, T, Pagliarone, C, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Pucci, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Wagner, F, Willers, M, Zema, V, Angloher G., Banik S., Benato G., Bento A., Bertolini A., Breier R., Bucci C., Burkhart J., Canonica L., D'Addabbo A., Di Lorenzo S., Einfalt L., Erb A., Feilitzsch F. V., Ferreiro Iachellini N., Fichtinger S., Fuchs D., Fuss A., Garai A., Ghete V. M., Gerster S., Gorla P., Guillaumon P. V., Gupta S., Hauff D., Jeskovsky M., Jochum J., Kaznacheeva M., Kinast A., Kluck H., Kraus H., Langenkamper A., Mancuso M., Marini L., Meyer L., Mokina V., Nilima A., Olmi M., Ortmann T., Pagliarone C., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Pucci F., Reindl F., Rothe J., Schaffner K., Schieck J., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Usherov I., Wagner F., Willers M., Zema V., Angloher, G, Banik, S, Benato, G, Bento, A, Bertolini, A, Breier, R, Bucci, C, Burkhart, J, Canonica, L, D'Addabbo, A, Di Lorenzo, S, Einfalt, L, Erb, A, Feilitzsch, F, Ferreiro Iachellini, N, Fichtinger, S, Fuchs, D, Fuss, A, Garai, A, Ghete, V, Gerster, S, Gorla, P, Guillaumon, P, Gupta, S, Hauff, D, Jeskovsky, M, Jochum, J, Kaznacheeva, M, Kinast, A, Kluck, H, Kraus, H, Langenkamper, A, Mancuso, M, Marini, L, Meyer, L, Mokina, V, Nilima, A, Olmi, M, Ortmann, T, Pagliarone, C, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Pucci, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Wagner, F, Willers, M, Zema, V, Angloher G., Banik S., Benato G., Bento A., Bertolini A., Breier R., Bucci C., Burkhart J., Canonica L., D'Addabbo A., Di Lorenzo S., Einfalt L., Erb A., Feilitzsch F. V., Ferreiro Iachellini N., Fichtinger S., Fuchs D., Fuss A., Garai A., Ghete V. M., Gerster S., Gorla P., Guillaumon P. V., Gupta S., Hauff D., Jeskovsky M., Jochum J., Kaznacheeva M., Kinast A., Kluck H., Kraus H., Langenkamper A., Mancuso M., Marini L., Meyer L., Mokina V., Nilima A., Olmi M., Ortmann T., Pagliarone C., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Pucci F., Reindl F., Rothe J., Schaffner K., Schieck J., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Usherov I., Wagner F., Willers M., and Zema V.

Abstract

We present limits on the spin-independent interaction cross section of dark matter particles with silicon nuclei, derived from data taken with a cryogenic calorimeter with 0.35 g target mass operated in the CRESST-III experiment. A baseline nuclear recoil energy resolution of (1.36±0.05) eVnr, currently the lowest reported for macroscopic particle detectors, and a corresponding energy threshold of (10.0±0.2) eVnr have been achieved, improving the sensitivity to light dark matter particles with masses below 160 MeV/c2 by a factor of up to 20 compared to previous results. We characterize the observed low energy excess, and we exclude noise triggers and radioactive contaminations on the crystal surfaces as dominant contributions.

Published
2023

23. Towards an automated data cleaning with deep learning in CRESST

Author

Angloher, G, Banik, S, Bartolot, D, Benato, G, Bento, A, Bertolini, A, Breier, R, Bucci, C, Burkhart, J, Canonica, L, D'Addabbo, A, Dilorenzo, S, Einfalt, L, Erb, A, Feilitzsch, F, Iachellini, N, Fichtinger, S, Fuchs, D, Fuss, A, Garai, A, Ghete, V, Gerster, S, Gorla, P, Guillaumon, P, Gupta, S, Hauff, D, Jeskovsky, M, Jochum, J, Kaznacheeva, M, Kinast, A, Kluck, H, Kraus, H, Lackner, M, Langenkamper, A, Mancuso, M, Marini, L, Meyer, L, Mokina, V, Nilima, A, Olmi, M, Ortmann, T, Pagliarone, C, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Pucci, F, Reindl, F, Rizvanovic, D, Rothe, J, Schaffner, K, Schieck, J, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Wagner, F, Willers, M, Zema, V, Waltenberger, W, Angloher G., Banik S., Bartolot D., Benato G., Bento A., Bertolini A., Breier R., Bucci C., Burkhart J., Canonica L., D'Addabbo A., DiLorenzo S., Einfalt L., Erb A., Feilitzsch F., Iachellini N. F., Fichtinger S., Fuchs D., Fuss A., Garai A., Ghete V. M., Gerster S., Gorla P., Guillaumon P. V., Gupta S., Hauff D., Jeskovsky M., Jochum J., Kaznacheeva M., Kinast A., Kluck H., Kraus H., Lackner M., Langenkamper A., Mancuso M., Marini L., Meyer L., Mokina V., Nilima A., Olmi M., Ortmann T., Pagliarone C., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Pucci F., Reindl F., Rizvanovic D., Rothe J., Schaffner K., Schieck J., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Usherov I., Wagner F., Willers M., Zema V., Waltenberger W., Angloher, G, Banik, S, Bartolot, D, Benato, G, Bento, A, Bertolini, A, Breier, R, Bucci, C, Burkhart, J, Canonica, L, D'Addabbo, A, Dilorenzo, S, Einfalt, L, Erb, A, Feilitzsch, F, Iachellini, N, Fichtinger, S, Fuchs, D, Fuss, A, Garai, A, Ghete, V, Gerster, S, Gorla, P, Guillaumon, P, Gupta, S, Hauff, D, Jeskovsky, M, Jochum, J, Kaznacheeva, M, Kinast, A, Kluck, H, Kraus, H, Lackner, M, Langenkamper, A, Mancuso, M, Marini, L, Meyer, L, Mokina, V, Nilima, A, Olmi, M, Ortmann, T, Pagliarone, C, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Pucci, F, Reindl, F, Rizvanovic, D, Rothe, J, Schaffner, K, Schieck, J, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Wagner, F, Willers, M, Zema, V, Waltenberger, W, Angloher G., Banik S., Bartolot D., Benato G., Bento A., Bertolini A., Breier R., Bucci C., Burkhart J., Canonica L., D'Addabbo A., DiLorenzo S., Einfalt L., Erb A., Feilitzsch F., Iachellini N. F., Fichtinger S., Fuchs D., Fuss A., Garai A., Ghete V. M., Gerster S., Gorla P., Guillaumon P. V., Gupta S., Hauff D., Jeskovsky M., Jochum J., Kaznacheeva M., Kinast A., Kluck H., Kraus H., Lackner M., Langenkamper A., Mancuso M., Marini L., Meyer L., Mokina V., Nilima A., Olmi M., Ortmann T., Pagliarone C., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Pucci F., Reindl F., Rizvanovic D., Rothe J., Schaffner K., Schieck J., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Usherov I., Wagner F., Willers M., Zema V., and Waltenberger W.

Abstract

The CRESST experiment employs cryogenic calorimeters for the sensitive measurement of nuclear recoils induced by dark matter particles. The recorded signals need to undergo a careful cleaning process to avoid wrongly reconstructed recoil energies caused by pile-up and read-out artefacts. We frame this process as a time series classification task and propose to automate it with neural networks. With a data set of over one million labeled records from 68 detectors, recorded between 2013 and 2019 by CRESST, we test the capability of four commonly used neural network architectures to learn the data cleaning task. Our best performing model achieves a balanced accuracy of 0.932 on our test set. We show on an exemplary detector that about half of the wrongly predicted events are in fact wrongly labeled events, and a large share of the remaining ones have a context-dependent ground truth. We furthermore evaluate the recall and selectivity of our classifiers with simulated data. The results confirm that the trained classifiers are well suited for the data cleaning task.

Published
2023

26. Improving the Quality of CaWO4 Target Crystals for CRESST

Author

Kinast, A, Angloher, G, Benato, G, Bento, A, Bertolini, A, Breier, R, Bucci, C, Canonica, L, D'Addabbo, A, Lorenzo, S, Einfalt, L, Erb, A, Feilitzsch, F, Iachellini, N, Fichtinger, S, Fuchs, D, Fuss, A, Garai, A, Ghete, V, Gorla, P, Gupta, S, Hamilton, F, Hauff, D, Jeskovsky, M, Jochum, J, Kaznacheeva, M, Kluck, H, Kraus, H, Langenkamper, A, Mancuso, M, Marini, L, Mokina, V, Nilima, A, Olmi, M, Ortmann, T, Pagliarone, C, Palusova, V, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Pucci, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Wagner, F, Willers, M, Zema, V, Kinast A., Angloher G., Benato G., Bento A., Bertolini A., Breier R., Bucci C., Canonica L., D'Addabbo A., Lorenzo S. D., Einfalt L., Erb A., Feilitzsch F. V., Iachellini N. F., Fichtinger S., Fuchs D., Fuss A., Garai A., Ghete V. -M., Gorla P., Gupta S., Hamilton F., Hauff D., Jeskovsky M., Jochum J., Kaznacheeva M., Kluck H., Kraus H., Langenkamper A., Mancuso M., Marini L., Mokina V., Nilima A., Olmi M., Ortmann T., Pagliarone C., Palusova V., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Pucci F., Reindl F., Rothe J., Schaffner K., Schieck J., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Usherov I., Wagner F., Willers M., Zema V., Kinast, A, Angloher, G, Benato, G, Bento, A, Bertolini, A, Breier, R, Bucci, C, Canonica, L, D'Addabbo, A, Lorenzo, S, Einfalt, L, Erb, A, Feilitzsch, F, Iachellini, N, Fichtinger, S, Fuchs, D, Fuss, A, Garai, A, Ghete, V, Gorla, P, Gupta, S, Hamilton, F, Hauff, D, Jeskovsky, M, Jochum, J, Kaznacheeva, M, Kluck, H, Kraus, H, Langenkamper, A, Mancuso, M, Marini, L, Mokina, V, Nilima, A, Olmi, M, Ortmann, T, Pagliarone, C, Palusova, V, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Pucci, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Wagner, F, Willers, M, Zema, V, Kinast A., Angloher G., Benato G., Bento A., Bertolini A., Breier R., Bucci C., Canonica L., D'Addabbo A., Lorenzo S. D., Einfalt L., Erb A., Feilitzsch F. V., Iachellini N. F., Fichtinger S., Fuchs D., Fuss A., Garai A., Ghete V. -M., Gorla P., Gupta S., Hamilton F., Hauff D., Jeskovsky M., Jochum J., Kaznacheeva M., Kluck H., Kraus H., Langenkamper A., Mancuso M., Marini L., Mokina V., Nilima A., Olmi M., Ortmann T., Pagliarone C., Palusova V., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Pucci F., Reindl F., Rothe J., Schaffner K., Schieck J., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Usherov I., Wagner F., Willers M., and Zema V.

Abstract

The Cryogenic Rare Event Search with Superconducting Thermometers (CRESST) experiment aims at the direct detection of dark matter particles via their elastic scattering off nuclei in a scintillating CaWO4 target crystal. The CaWO4 crystal is operated together with a light detector at mK temperature and read out by a Transition Edge Sensor. For many years, CaWO4 crystals have successfully been produced in-house at Technical University of Munich (TUM) with a focus on high radiopurity which is crucial to reduce background originating from radioactive contamination. In order to further improve the CaWO4 crystals, an extensive chemical purification of the raw materials and the synthesised CaWO4 powder has been performed. In addition, a temperature gradient simulation of the growth process and subsequently an optimisation of the growth furnace with the goal to reduce the intrinsic stress was carried out. We present results on the intrinsic stress in the CaWO4 crystals and on the CaWO4 powder radiopurity. A crystal grown from the purified material was installed in the current CRESST set-up. The detector is equipped with an instrumented holder which is used to measure the alpha decay rate of the crystal. We present a preliminary analysis showing a significantly reduced intrinsic background from natural decay chains.

Published
2022

27. Probing spin-dependent dark matter interactions with 6 Li: CRESST Collaboration

Author

Angloher, G, Benato, G, Bento, A, Bertoldo, E, Bertolini, A, Breier, R, Bucci, C, Canonica, L, D'Addabbo, A, Di Lorenzo, S, Einfalt, L, Erb, A, Feilitzsch, F, Ferreiro Iachellini, N, Fichtinger, S, Fuchs, D, Fuss, A, Garai, A, Ghete, V, Gorla, P, Gupta, S, Hauff, D, Jeskovsky, M, Jochum, J, Kaznacheeva, M, Kinast, A, Kluck, H, Kraus, H, Langenkamper, A, Mancuso, M, Marini, L, Mokina, V, Nilima, A, Olmi, M, Ortmann, T, Pagliarone, C, Palusova, V, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Pucci, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Wagner, F, Willers, M, Zema, V, Angloher G., Benato G., Bento A., Bertoldo E., Bertolini A., Breier R., Bucci C., Canonica L., D'Addabbo A., Di Lorenzo S., Einfalt L., Erb A., Feilitzsch F., Ferreiro Iachellini N., Fichtinger S., Fuchs D., Fuss A., Garai A., Ghete V. M., Gorla P., Gupta S., Hauff D., Jeskovsky M., Jochum J., Kaznacheeva M., Kinast A., Kluck H., Kraus H., Langenkamper A., Mancuso M., Marini L., Mokina V., Nilima A., Olmi M., Ortmann T., Pagliarone C., Palusova V., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Pucci F., Reindl F., Rothe J., Schaffner K., Schieck J., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Usherov I., Wagner F., Willers M., Zema V., Angloher, G, Benato, G, Bento, A, Bertoldo, E, Bertolini, A, Breier, R, Bucci, C, Canonica, L, D'Addabbo, A, Di Lorenzo, S, Einfalt, L, Erb, A, Feilitzsch, F, Ferreiro Iachellini, N, Fichtinger, S, Fuchs, D, Fuss, A, Garai, A, Ghete, V, Gorla, P, Gupta, S, Hauff, D, Jeskovsky, M, Jochum, J, Kaznacheeva, M, Kinast, A, Kluck, H, Kraus, H, Langenkamper, A, Mancuso, M, Marini, L, Mokina, V, Nilima, A, Olmi, M, Ortmann, T, Pagliarone, C, Palusova, V, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Pucci, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Wagner, F, Willers, M, Zema, V, Angloher G., Benato G., Bento A., Bertoldo E., Bertolini A., Breier R., Bucci C., Canonica L., D'Addabbo A., Di Lorenzo S., Einfalt L., Erb A., Feilitzsch F., Ferreiro Iachellini N., Fichtinger S., Fuchs D., Fuss A., Garai A., Ghete V. M., Gorla P., Gupta S., Hauff D., Jeskovsky M., Jochum J., Kaznacheeva M., Kinast A., Kluck H., Kraus H., Langenkamper A., Mancuso M., Marini L., Mokina V., Nilima A., Olmi M., Ortmann T., Pagliarone C., Palusova V., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Pucci F., Reindl F., Rothe J., Schaffner K., Schieck J., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Usherov I., Wagner F., Willers M., and Zema V.

Abstract

CRESST is one of the most prominent direct detection experiments for dark matter particles with sub-GeV/c2 mass. One of the advantages of the CRESST experiment is the possibility to include a large variety of nuclides in the target material used to probe dark matter interactions. In this work, we discuss in particular the interactions of dark matter particles with protons and neutrons of 6Li. This is now possible thanks to new calculations on nuclear matrix elements of this specific isotope of Li. To show the potential of using this particular nuclide for probing dark matter interactions, we used the data collected previously by a CRESST prototype based on LiAlO2 and operated in an above ground test-facility at Max-Planck-Institut für Physik in Munich, Germany. In particular, the inclusion of 6Li in the limit calculation drastically improves the result obtained for spin-dependent interactions with neutrons in the whole mass range. The improvement is significant, greater than two order of magnitude for dark matter masses below 1 GeV/c2, compared to the limit previously published with the same data.

Published
2022

28. Testing spin-dependent dark matter interactions with lithium aluminate targets in CRESST-III

Author

Angloher, G, Banik, S, Benato, G, Bento, A, Bertolini, A, Breier, R, Bucci, C, Burkhart, J, Canonica, L, D'Addabbo, A, Di Lorenzo, S, Einfalt, L, Erb, A, Feilitzsch, F, Ferreiro Iachellini, N, Fichtinger, S, Fuchs, D, Fuss, A, Garai, A, Ghete, V, Gerster, S, Gorla, P, Guillaumon, P, Gupta, S, Hauff, D, Jeskovsky, M, Jochum, J, Kaznacheeva, M, Kinast, A, Kluck, H, Kraus, H, Langenkamper, A, Mancuso, M, Marini, L, Meyer, L, Mokina, V, Nilima, A, Olmi, M, Ortmann, T, Pagliarone, C, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Pucci, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Wagner, F, Willers, M, Zema, V, Angloher G., Banik S., Benato G., Bento A., Bertolini A., Breier R., Bucci C., Burkhart J., Canonica L., D'Addabbo A., Di Lorenzo S., Einfalt L., Erb A., Feilitzsch F. V., Ferreiro Iachellini N., Fichtinger S., Fuchs D., Fuss A., Garai A., Ghete V. M., Gerster S., Gorla P., Guillaumon P. V., Gupta S., Hauff D., Jeskovsky M., Jochum J., Kaznacheeva M., Kinast A., Kluck H., Kraus H., Langenkamper A., Mancuso M., Marini L., Meyer L., Mokina V., Nilima A., Olmi M., Ortmann T., Pagliarone C., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Pucci F., Reindl F., Rothe J., Schaffner K., Schieck J., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Usherov I., Wagner F., Willers M., Zema V., Angloher, G, Banik, S, Benato, G, Bento, A, Bertolini, A, Breier, R, Bucci, C, Burkhart, J, Canonica, L, D'Addabbo, A, Di Lorenzo, S, Einfalt, L, Erb, A, Feilitzsch, F, Ferreiro Iachellini, N, Fichtinger, S, Fuchs, D, Fuss, A, Garai, A, Ghete, V, Gerster, S, Gorla, P, Guillaumon, P, Gupta, S, Hauff, D, Jeskovsky, M, Jochum, J, Kaznacheeva, M, Kinast, A, Kluck, H, Kraus, H, Langenkamper, A, Mancuso, M, Marini, L, Meyer, L, Mokina, V, Nilima, A, Olmi, M, Ortmann, T, Pagliarone, C, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Pucci, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Wagner, F, Willers, M, Zema, V, Angloher G., Banik S., Benato G., Bento A., Bertolini A., Breier R., Bucci C., Burkhart J., Canonica L., D'Addabbo A., Di Lorenzo S., Einfalt L., Erb A., Feilitzsch F. V., Ferreiro Iachellini N., Fichtinger S., Fuchs D., Fuss A., Garai A., Ghete V. M., Gerster S., Gorla P., Guillaumon P. V., Gupta S., Hauff D., Jeskovsky M., Jochum J., Kaznacheeva M., Kinast A., Kluck H., Kraus H., Langenkamper A., Mancuso M., Marini L., Meyer L., Mokina V., Nilima A., Olmi M., Ortmann T., Pagliarone C., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Pucci F., Reindl F., Rothe J., Schaffner K., Schieck J., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Usherov I., Wagner F., Willers M., and Zema V.

Abstract

In the past decades, numerous experiments have emerged to unveil the nature of dark matter, one of the most discussed open questions in modern particle physics. Among them, the Cryogenic Rare Event Search with Superconducting Thermometers (CRESST) experiment, located at the Laboratori Nazionali del Gran Sasso, operates scintillating crystals as cryogenic phonon detectors. In this work, we present first results from the operation of two detector modules which both have 10.46 g LiAlO2 targets in CRESST-III. The lithium contents in the crystal are Li6, with an odd number of protons and neutrons, and Li7, with an odd number of protons. By considering both isotopes of lithium and Al27, we set the currently strongest cross section upper limits on spin-dependent interaction of dark matter with protons and neutrons for the mass region between 0.25 and 1.5 GeV/c2.

Published
2022

29. Cosmic activation of Cresst's CaWO4 crystals

Author

Kluck, H, Angloher, G, Benato, G, Bento, A, Bertolini, A, Breier, R, Bucci, C, Canonica, L, D'Addabbo, A, Di Lorenzo, S, Einfalt, L, Erb, A, Feilitzsch, F, Iachellini, N, Fichtinger, S, Fuchs, D, Fuss, A, Garai, A, Ghete, V, Gorla, P, Gupta, S, Hauff, D, Jeskovsky, M, Jochum, J, Kaznacheeva, M, Kinast, A, Kraus, H, Langenkamper, A, Mancuso, M, Marini, L, Mokina, V, Nilima, A, Olmi, M, Ortmann, T, Pagliarone, C, Palusova, V, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Pucci, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Wagner, F, Willers, M, Zema, V, Kluck H., Angloher G., Benato G., Bento A., Bertolini A., Breier R., Bucci C., Canonica L., D'Addabbo A., Di Lorenzo S., Einfalt L., Erb A., Feilitzsch F. V., Iachellini N. F., Fichtinger S., Fuchs D., Fuss A., Garai A., Ghete V. M., Gorla P., Gupta S., Hauff D., Jeskovsky M., Jochum J., Kaznacheeva M., Kinast A., Kraus H., Langenkamper A., Mancuso M., Marini L., Mokina V., Nilima A., Olmi M., Ortmann T., Pagliarone C., Palusova V., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Pucci F., Reindl F., Rothe J., Schaffner K., Schieck J., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Usherov I., Wagner F., Willers M., Zema V., Kluck, H, Angloher, G, Benato, G, Bento, A, Bertolini, A, Breier, R, Bucci, C, Canonica, L, D'Addabbo, A, Di Lorenzo, S, Einfalt, L, Erb, A, Feilitzsch, F, Iachellini, N, Fichtinger, S, Fuchs, D, Fuss, A, Garai, A, Ghete, V, Gorla, P, Gupta, S, Hauff, D, Jeskovsky, M, Jochum, J, Kaznacheeva, M, Kinast, A, Kraus, H, Langenkamper, A, Mancuso, M, Marini, L, Mokina, V, Nilima, A, Olmi, M, Ortmann, T, Pagliarone, C, Palusova, V, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Pucci, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Wagner, F, Willers, M, Zema, V, Kluck H., Angloher G., Benato G., Bento A., Bertolini A., Breier R., Bucci C., Canonica L., D'Addabbo A., Di Lorenzo S., Einfalt L., Erb A., Feilitzsch F. V., Iachellini N. F., Fichtinger S., Fuchs D., Fuss A., Garai A., Ghete V. M., Gorla P., Gupta S., Hauff D., Jeskovsky M., Jochum J., Kaznacheeva M., Kinast A., Kraus H., Langenkamper A., Mancuso M., Marini L., Mokina V., Nilima A., Olmi M., Ortmann T., Pagliarone C., Palusova V., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Pucci F., Reindl F., Rothe J., Schaffner K., Schieck J., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Usherov I., Wagner F., Willers M., and Zema V.

Abstract

The Cresst experiment searches for dark matter induced nuclear recoils inside CaWO4 based cryogenic calorimeters at the Laboratori Nazionali del Gran Sasso (LNGS) in Italy. To identify reliably a potential signal, a precise understanding of its background budget is crucial. An important background category could be “cosmogenics”: radionuclides produced via interactions with cosmic rays, mainly during the crystal production at surface facilities. Albeit CaWO4 is a well-established calorimetric material, no systematic study of its susceptibility for cosmic activation existed so far. In this contribution, we will first report the exposure profile of Cresst's in-house grown TUM93 crystal to cosmic rays. Then we will identify the most prominent cosmogenics via Activia calculations. Afterwards we discuss the expected background spectrum based on Geant4 simulations and compare it to measurements.

Published
2022

30. Secular Equilibrium Assessment in a CaWO4 Target Crystal from the Dark Matter Experiment CRESST using Bayesian Likelihood Normalisation

Author

Angloher, G, Banik, S, Benato, G, Bento, A, Bertolini, A, Breier, R, Bucci, C, Burkhart, J, Canonica, L, D'Addabbo, A, Di Lorenzo, S, Einfalt, L, Erb, A, Feilitzsch, F, Iachellini, N, Fichtinger, S, Fuchs, D, Fuss, A, Garai, A, Ghete, V, Gorla, P, Gupta, S, Hauff, D, Jeskovsky, M, Jochum, J, Kaznacheeva, M, Kinast, A, Kluck, H, Kraus, H, Langenkämper, A, Mancuso, M, Marini, L, Mokina, V, Nilima, A, Olmi, M, Ortmann, T, Pagliarone, C, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Pröbst, F, Pucci, F, Reindl, F, Rothe, J, Schäffner, K, Schieck, J, Schmiedmayer, D, Schönert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Wagner, F, Willers, M, Zema, V, Ferella, F, Laubenstein, M, Nisi, S, Feilitzsch, FV, Iachellini, NF, Ghete, VM, Angloher, G, Banik, S, Benato, G, Bento, A, Bertolini, A, Breier, R, Bucci, C, Burkhart, J, Canonica, L, D'Addabbo, A, Di Lorenzo, S, Einfalt, L, Erb, A, Feilitzsch, F, Iachellini, N, Fichtinger, S, Fuchs, D, Fuss, A, Garai, A, Ghete, V, Gorla, P, Gupta, S, Hauff, D, Jeskovsky, M, Jochum, J, Kaznacheeva, M, Kinast, A, Kluck, H, Kraus, H, Langenkämper, A, Mancuso, M, Marini, L, Mokina, V, Nilima, A, Olmi, M, Ortmann, T, Pagliarone, C, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Pröbst, F, Pucci, F, Reindl, F, Rothe, J, Schäffner, K, Schieck, J, Schmiedmayer, D, Schönert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Wagner, F, Willers, M, Zema, V, Ferella, F, Laubenstein, M, Nisi, S, Feilitzsch, FV, Iachellini, NF, and Ghete, VM

Abstract

CRESST is a leading direct detection sub-GeVc−2 dark matter experiment. During its second phase, cryogenic bolometers were used to detect nuclear recoils off the CaWO4 target crystal nuclei. The previously established electromagnetic background model relies on Secular Equilibrium (SE) assumptions. In this work, a validation of SE is attempted by comparing two likelihood-based normalisation results using a recently developed spectral template normalisation method based on Bayesian likelihood. Albeit we find deviations from SE in some cases we conclude that these deviations are artefacts of the fit and that the assumptions of SE is physically meaningful.

Published
2023

31. Searches for Light Dark Matter with the CRESST-III Experiment

Author

Mancuso, M, Abdelhameed, A, Angloher, G, Breier, R, Bauer, P, Bento, A, Bertoldo, E, Bucci, C, Canonica, L, D'Addabbo, A, Di Lorenzo, S, Erb, A, von Feilitzsch, F, Ferreiro Iachellini, N, Fichtinger, S, Fuss, A, Gorla, P, Hauff, D, Jeskovsky, M, Jochum, J, Kaizer, J, Kinast, A, Kluck, H, Kraus, H, Langenkamper, A, Mokina, V, Mondragon, E, Olmi, M, Ortmann, T, Pagliarone, C, Palusova, V, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schipperges, V, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Turkoglu, C, Usherov, I, Willers, M, Zema, V, Zeman, J, Mancuso M., Abdelhameed A. H., Angloher G., Breier R., Bauer P., Bento A., Bertoldo E., Bucci C., Canonica L., D'Addabbo A., Di Lorenzo S., Erb A., von Feilitzsch F., Ferreiro Iachellini N., Fichtinger S., Fuss A., Gorla P., Hauff D., Jeskovsky M., Jochum J., Kaizer J., Kinast A., Kluck H., Kraus H., Langenkamper A., Mokina V., Mondragon E., Olmi M., Ortmann T., Pagliarone C., Palusova V., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Reindl F., Rothe J., Schaffner K., Schieck J., Schipperges V., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Turkoglu C., Usherov I., Willers M., Zema V., Zeman J., Mancuso, M, Abdelhameed, A, Angloher, G, Breier, R, Bauer, P, Bento, A, Bertoldo, E, Bucci, C, Canonica, L, D'Addabbo, A, Di Lorenzo, S, Erb, A, von Feilitzsch, F, Ferreiro Iachellini, N, Fichtinger, S, Fuss, A, Gorla, P, Hauff, D, Jeskovsky, M, Jochum, J, Kaizer, J, Kinast, A, Kluck, H, Kraus, H, Langenkamper, A, Mokina, V, Mondragon, E, Olmi, M, Ortmann, T, Pagliarone, C, Palusova, V, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schipperges, V, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Turkoglu, C, Usherov, I, Willers, M, Zema, V, Zeman, J, Mancuso M., Abdelhameed A. H., Angloher G., Breier R., Bauer P., Bento A., Bertoldo E., Bucci C., Canonica L., D'Addabbo A., Di Lorenzo S., Erb A., von Feilitzsch F., Ferreiro Iachellini N., Fichtinger S., Fuss A., Gorla P., Hauff D., Jeskovsky M., Jochum J., Kaizer J., Kinast A., Kluck H., Kraus H., Langenkamper A., Mokina V., Mondragon E., Olmi M., Ortmann T., Pagliarone C., Palusova V., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Reindl F., Rothe J., Schaffner K., Schieck J., Schipperges V., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Turkoglu C., Usherov I., Willers M., Zema V., and Zeman J.

Abstract

Cryogenic Rare Event Search with Superconducting Thermometers (CRESST) is a long-standing direct dark matter detection experiment with cryogenic detectors located at the underground facility Laboratori Nazionali del Gran Sasso in Italy. CRESST-III, the third generation of CRESST, was specifically designed to have a world-leading sensitivity for low-mass dark matter (DM) (less than 2 GeV/c 2) to probe the spin-independent DM-nucleus cross section. At present, a large part of the parameter space for spin-independent scattering off nuclei remains untested for dark matter particles with masses below few GeV/c 2 although many motivated theoretical models having been proposed. The CRESST-III experiment employs scintillating CaWO 4 crystals of ∼ 25 g as target material for dark matter interactions operated as cryogenic scintillating calorimeters at ∼ 10 mK. CRESST-III first data taking was successfully completed in 2018, achieving an unprecedented energy threshold for nuclear recoils. This result extended the present sensitivity to DM particles as light as ∼ 160 MeV/c 2. In this paper, an overview of the CRESST-III detectors and results will be presented.

Published
2020

32. Cryogenic characterization of a LiAlO 2 crystal and new results on spin-dependent dark matter interactions with ordinary matter: CRESST Collaboration

Author

Abdelhameed, A, Angloher, G, Bauer, P, Bento, A, Bertoldo, E, Breier, R, Bucci, C, Canonica, L, D'Addabbo, A, Di Lorenzo, S, Erb, A, Feilitzsch, F, Iachellini, N, Fichtinger, S, Fuchs, D, Fuss, A, Ghete, V, Garai, A, Gorla, P, Hauff, D, Jeskovsky, M, Jochum, J, Kaizer, J, Kaznacheeva, M, Kinast, A, Kluck, H, Kraus, H, Langenkamper, A, Mancuso, M, Mokina, V, Mondragon, E, Olmi, M, Ortmann, T, Pagliarone, C, Palusova, V, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schipperges, V, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Wagner, F, Willers, M, Zema, V, Zeman, J, Brutzam, M, Ganschow, S, Abdelhameed A. H., Angloher G., Bauer P., Bento A., Bertoldo E., Breier R., Bucci C., Canonica L., D'Addabbo A., Di Lorenzo S., Erb A., Feilitzsch F. V., Iachellini N. F., Fichtinger S., Fuchs D., Fuss A., Ghete V. M., Garai A., Gorla P., Hauff D., Jeskovsky M., Jochum J., Kaizer J., Kaznacheeva M., Kinast A., Kluck H., Kraus H., Langenkamper A., Mancuso M., Mokina V., Mondragon E., Olmi M., Ortmann T., Pagliarone C., Palusova V., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Reindl F., Rothe J., Schaffner K., Schieck J., Schipperges V., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Usherov I., Wagner F., Willers M., Zema V., Zeman J., Brutzam M., Ganschow S., Abdelhameed, A, Angloher, G, Bauer, P, Bento, A, Bertoldo, E, Breier, R, Bucci, C, Canonica, L, D'Addabbo, A, Di Lorenzo, S, Erb, A, Feilitzsch, F, Iachellini, N, Fichtinger, S, Fuchs, D, Fuss, A, Ghete, V, Garai, A, Gorla, P, Hauff, D, Jeskovsky, M, Jochum, J, Kaizer, J, Kaznacheeva, M, Kinast, A, Kluck, H, Kraus, H, Langenkamper, A, Mancuso, M, Mokina, V, Mondragon, E, Olmi, M, Ortmann, T, Pagliarone, C, Palusova, V, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schipperges, V, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Wagner, F, Willers, M, Zema, V, Zeman, J, Brutzam, M, Ganschow, S, Abdelhameed A. H., Angloher G., Bauer P., Bento A., Bertoldo E., Breier R., Bucci C., Canonica L., D'Addabbo A., Di Lorenzo S., Erb A., Feilitzsch F. V., Iachellini N. F., Fichtinger S., Fuchs D., Fuss A., Ghete V. M., Garai A., Gorla P., Hauff D., Jeskovsky M., Jochum J., Kaizer J., Kaznacheeva M., Kinast A., Kluck H., Kraus H., Langenkamper A., Mancuso M., Mokina V., Mondragon E., Olmi M., Ortmann T., Pagliarone C., Palusova V., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Reindl F., Rothe J., Schaffner K., Schieck J., Schipperges V., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Usherov I., Wagner F., Willers M., Zema V., Zeman J., Brutzam M., and Ganschow S.

Abstract

In this work, a first cryogenic characterization of a scintillating LiAlO 2 single crystal is presented. The results achieved show that this material holds great potential as a target for direct dark matter search experiments. Three different detector modules obtained from one crystal grown at the Leibniz-Institut für Kristallzüchtung (IKZ) have been tested to study different properties at cryogenic temperatures. Firstly, two 2.8 g twin crystals were used to build different detector modules which were operated in an above-ground laboratory at the Max Planck Institute for Physics (MPP) in Munich, Germany. The first detector module was used to study the scintillation properties of LiAlO 2 at cryogenic temperatures. The second achieved an energy threshold of (213.02 ± 1.48) eV which allows setting a competitive limit on the spin-dependent dark matter particle-proton scattering cross section for dark matter particle masses between 350MeV/c2 and 1.50GeV/c2. Secondly, a detector module with a 373 g LiAlO 2 crystal as the main absorber was tested in an underground facility at the Laboratori Nazionali del Gran Sasso (LNGS): from this measurement it was possible to determine the radiopurity of the crystal and study the feasibility of using this material as a neutron flux monitor for low-background experiments.

Published
2020

33. Lithium-Containing Crystals for Light Dark Matter Search Experiments

Author

Bertoldo, E, Abdelhameed, A, Angloher, G, Bauer, P, Bento, A, Breier, R, Bucci, C, Canonica, L, D'Addabbo, A, Di Lorenzo, S, Erb, A, Feilitzsch, F, Ferreiroiachellini, N, Fichtinger, S, Fuchs, D, Fuss, A, Gorla, P, Hauff, D, Jeskovsky, M, Jochum, J, Kaizer, J, Kinast, A, Kluck, H, Kraus, H, Langenkamper, A, Mancuso, M, Mokina, V, Mondragon, E, Olmi, M, Ortmann, T, Pagliarone, C, Palusova, V, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schipperges, V, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Willers, M, Zema, V, Zeman, J, Brutzam, M, Ganschow, S, Bertoldo E., Abdelhameed A. H., Angloher G., Bauer P., Bento A., Breier R., Bucci C., Canonica L., D'Addabbo A., Di Lorenzo S., Erb A., Feilitzsch F. V., FerreiroIachellini N., Fichtinger S., Fuchs D., Fuss A., Gorla P., Hauff D., Jeskovsky M., Jochum J., Kaizer J., Kinast A., Kluck H., Kraus H., Langenkamper A., Mancuso M., Mokina V., Mondragon E., Olmi M., Ortmann T., Pagliarone C., Palusova V., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Reindl F., Rothe J., Schaffner K., Schieck J., Schipperges V., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Usherov I., Willers M., Zema V., Zeman J., Brutzam M., Ganschow S., Bertoldo, E, Abdelhameed, A, Angloher, G, Bauer, P, Bento, A, Breier, R, Bucci, C, Canonica, L, D'Addabbo, A, Di Lorenzo, S, Erb, A, Feilitzsch, F, Ferreiroiachellini, N, Fichtinger, S, Fuchs, D, Fuss, A, Gorla, P, Hauff, D, Jeskovsky, M, Jochum, J, Kaizer, J, Kinast, A, Kluck, H, Kraus, H, Langenkamper, A, Mancuso, M, Mokina, V, Mondragon, E, Olmi, M, Ortmann, T, Pagliarone, C, Palusova, V, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schipperges, V, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Willers, M, Zema, V, Zeman, J, Brutzam, M, Ganschow, S, Bertoldo E., Abdelhameed A. H., Angloher G., Bauer P., Bento A., Breier R., Bucci C., Canonica L., D'Addabbo A., Di Lorenzo S., Erb A., Feilitzsch F. V., FerreiroIachellini N., Fichtinger S., Fuchs D., Fuss A., Gorla P., Hauff D., Jeskovsky M., Jochum J., Kaizer J., Kinast A., Kluck H., Kraus H., Langenkamper A., Mancuso M., Mokina V., Mondragon E., Olmi M., Ortmann T., Pagliarone C., Palusova V., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Reindl F., Rothe J., Schaffner K., Schieck J., Schipperges V., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Usherov I., Willers M., Zema V., Zeman J., Brutzam M., and Ganschow S.

Abstract

In the current direct dark matter search landscape, the leading experiments in the sub-GeV mass region mostly rely on cryogenic techniques which employ crystalline targets. One attractive type of crystals for these experiments is those containing lithium, due to the fact that 7Li is an ideal candidate to study spin-dependent dark matter interactions in the low mass region. Furthermore, 6Li can absorb neutrons, a challenging background for dark matter experiments, through a distinctive signature which allows the monitoring of the neutron flux directly on site. In this work, we show the results obtained with three different detectors based on LiAlO 2, a target crystal never used before in cryogenic experiments.

Published
2020

34. Latest results of CRESST-III's search for sub-GeV/c2 dark matter

Author

Kluck, H, Abdelhameed, A, Angloher, G, Bauer, P, Bento, A, Bertoldo, E, Breier, R, Bucci, C, Canonica, L, D'Addabbo, A, Di Lorenzo, S, Erb, A, Feilitzsch, F, Ferreiro Iachellini, N, Fichtinger, S, Fuss, A, Gorla, P, Hauff, D, Jeskovsky, M, Jochum, J, Kaizer, J, Kinast, A, Kraus, H, Langenkamper, A, Mancuso, M, Mokina, V, Mondragon, E, Olmi, M, Ortmann, T, Pagliarone, C, Palusova, V, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Reindl, F, Rothe, J, Schaner, K, Schieck, J, Schipperges, V, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Willers, M, Zema, V, Zeman, J, Kluck H., Abdelhameed A. H., Angloher G., Bauer P., Bento A., Bertoldo E., Breier R., Bucci C., Canonica L., D'Addabbo A., Di Lorenzo S., Erb A., Feilitzsch F. V., Ferreiro Iachellini N., Fichtinger S., Fuss A., Gorla P., Hauff D., Jeskovsky M., Jochum J., Kaizer J., Kinast A., Kraus H., Langenkamper A., Mancuso M., Mokina V., Mondragon E., Olmi M., Ortmann T., Pagliarone C., Palusova V., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Reindl F., Rothe J., Schaner K., Schieck J., Schipperges V., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Usherov I., Willers M., Zema V., Zeman J., Kluck, H, Abdelhameed, A, Angloher, G, Bauer, P, Bento, A, Bertoldo, E, Breier, R, Bucci, C, Canonica, L, D'Addabbo, A, Di Lorenzo, S, Erb, A, Feilitzsch, F, Ferreiro Iachellini, N, Fichtinger, S, Fuss, A, Gorla, P, Hauff, D, Jeskovsky, M, Jochum, J, Kaizer, J, Kinast, A, Kraus, H, Langenkamper, A, Mancuso, M, Mokina, V, Mondragon, E, Olmi, M, Ortmann, T, Pagliarone, C, Palusova, V, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Reindl, F, Rothe, J, Schaner, K, Schieck, J, Schipperges, V, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Usherov, I, Willers, M, Zema, V, Zeman, J, Kluck H., Abdelhameed A. H., Angloher G., Bauer P., Bento A., Bertoldo E., Breier R., Bucci C., Canonica L., D'Addabbo A., Di Lorenzo S., Erb A., Feilitzsch F. V., Ferreiro Iachellini N., Fichtinger S., Fuss A., Gorla P., Hauff D., Jeskovsky M., Jochum J., Kaizer J., Kinast A., Kraus H., Langenkamper A., Mancuso M., Mokina V., Mondragon E., Olmi M., Ortmann T., Pagliarone C., Palusova V., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Reindl F., Rothe J., Schaner K., Schieck J., Schipperges V., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Usherov I., Willers M., Zema V., and Zeman J.

Abstract

The CRESST-III experiment searches for direct interactions of dark matter with ordinary matter. The main event signature would be a nuclear recoil inside one of the scintillating CaWO4 crystals. Operating the crystals as cryogenic calorimeters provides a phonon signal as measure of the deposited energy. The simultaneous readout of both signals is used to actively discriminate backgrounds. CRESST-III focuses on the sub-GeV/c2 mass region where the sensitivity is driven by the threshold. In the _rst data taking campaign of CRESST-III from 2016-2018 an unprecedented low threshold of 30.1 eV for nuclear recoils was obtained. In this contribution, we will report the status of the experiment and the latest results.

Published
2020

38. Geant4-based electromagnetic background model for the CRESST dark matter experiment

Author

Abdelhameed, A, Angloher, G, Bauer, P, Bento, A, Bertoldo, E, Breier, R, Bucci, C, Canonica, L, D'Addabbo, A, Lorenzo, S, Erb, A, Feilitzsch, F, Iachellini, N, Fichtinger, S, Fuss, A, Gorla, P, Hauff, D, Jeskovsky, M, Jochum, J, Kaizer, J, Kinast, A, Kluck, H, Kraus, H, Langenkamper, A, Mancuso, M, Mokina, V, Mondragon, E, Olmi, M, Ortmann, T, Pagliarone, C, Palusova, V, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schipperges, V, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Turkoglu, C, Usherov, I, Willers, M, Zema, V, Zeman, J, Abdelhameed A. H., Angloher G., Bauer P., Bento A., Bertoldo E., Breier R., Bucci C., Canonica L., D'Addabbo A., Lorenzo S. D., Erb A., Feilitzsch F., Iachellini N. F., Fichtinger S., Fuss A., Gorla P., Hauff D., Jeskovsky M., Jochum J., Kaizer J., Kinast A., Kluck H., Kraus H., Langenkamper A., Mancuso M., Mokina V., Mondragon E., Olmi M., Ortmann T., Pagliarone C., Palusova V., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Reindl F., Rothe J., Schaffner K., Schieck J., Schipperges V., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Turkoglu C., Usherov I., Willers M., Zema V., Zeman J., Abdelhameed, A, Angloher, G, Bauer, P, Bento, A, Bertoldo, E, Breier, R, Bucci, C, Canonica, L, D'Addabbo, A, Lorenzo, S, Erb, A, Feilitzsch, F, Iachellini, N, Fichtinger, S, Fuss, A, Gorla, P, Hauff, D, Jeskovsky, M, Jochum, J, Kaizer, J, Kinast, A, Kluck, H, Kraus, H, Langenkamper, A, Mancuso, M, Mokina, V, Mondragon, E, Olmi, M, Ortmann, T, Pagliarone, C, Palusova, V, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schipperges, V, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Turkoglu, C, Usherov, I, Willers, M, Zema, V, Zeman, J, Abdelhameed A. H., Angloher G., Bauer P., Bento A., Bertoldo E., Breier R., Bucci C., Canonica L., D'Addabbo A., Lorenzo S. D., Erb A., Feilitzsch F., Iachellini N. F., Fichtinger S., Fuss A., Gorla P., Hauff D., Jeskovsky M., Jochum J., Kaizer J., Kinast A., Kluck H., Kraus H., Langenkamper A., Mancuso M., Mokina V., Mondragon E., Olmi M., Ortmann T., Pagliarone C., Palusova V., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Reindl F., Rothe J., Schaffner K., Schieck J., Schipperges V., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Turkoglu C., Usherov I., Willers M., Zema V., and Zeman J.

Abstract

The CRESST (Cryogenic Rare Event Search with Superconducting Thermometers) dark matter search experiment aims for the detection of dark matter particles via elastic scattering off nuclei in CaWO 4 crystals. To understand the CRESST electromagnetic background due to the bulk contamination in the employed materials, a model based on Monte Carlo simulations was developed using the Geant4 simulation toolkit. The results of the simulation are applied to the TUM40 detector module of CRESST-II phase 2. We are able to explain up to (68±16)% of the electromagnetic background in the energy range between 1 and 40keV.

Published
2019

39. Erratum to: Geant4-based electromagnetic background model for the CRESST dark matter experiment (The European Physical Journal C, (2019), 79, 10, (881), 10.1140/epjc/s10052-019-7385-0)

Author

Abdelhameed A. H., Abdelhameed, A, Angloher, G, Bauer, P, Bento, A, Bertoldo, E, Breier, R, Bucci, C, Canonica, L, D'Addabbo, A, Lorenzo, S, Erb, A, Feilitzsch, F, Iachellini, N, Fichtinger, S, Fuss, A, Gorla, P, Hauff, D, Jeskovsky, M, Jochum, J, Kaizer, J, Kinast, A, Kluck, H, Kraus, H, Langenkamper, A, Mancuso, M, Mokina, V, Mondragon, E, Olmi, M, Ortmann, T, Pagliarone, C, Palusova, V, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schipperges, V, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Turkoglu, C, Usherov, I, Willers, M, Zema, V, Zeman, J, Abdelhameed A. H., Angloher G., Bauer P., Bento A., Bertoldo E., Breier R., Bucci C., Canonica L., D'Addabbo A., Lorenzo S. D., Erb A., Feilitzsch F., Iachellini N. F., Fichtinger S., Fuss A., Gorla P., Hauff D., Jeskovsky M., Jochum J., Kaizer J., Kinast A., Kluck H., Kraus H., Langenkamper A., Mancuso M., Mokina V., Mondragon E., Olmi M., Ortmann T., Pagliarone C., Palusova V., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Reindl F., Rothe J., Schaffner K., Schieck J., Schipperges V., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Turkoglu C., Usherov I., Willers M., Zema V., Zeman J., Abdelhameed A. H., Abdelhameed, A, Angloher, G, Bauer, P, Bento, A, Bertoldo, E, Breier, R, Bucci, C, Canonica, L, D'Addabbo, A, Lorenzo, S, Erb, A, Feilitzsch, F, Iachellini, N, Fichtinger, S, Fuss, A, Gorla, P, Hauff, D, Jeskovsky, M, Jochum, J, Kaizer, J, Kinast, A, Kluck, H, Kraus, H, Langenkamper, A, Mancuso, M, Mokina, V, Mondragon, E, Olmi, M, Ortmann, T, Pagliarone, C, Palusova, V, Pattavina, L, Petricca, F, Potzel, W, Povinec, P, Probst, F, Reindl, F, Rothe, J, Schaffner, K, Schieck, J, Schipperges, V, Schmiedmayer, D, Schonert, S, Schwertner, C, Stahlberg, M, Stodolsky, L, Strandhagen, C, Strauss, R, Turkoglu, C, Usherov, I, Willers, M, Zema, V, Zeman, J, Abdelhameed A. H., Angloher G., Bauer P., Bento A., Bertoldo E., Breier R., Bucci C., Canonica L., D'Addabbo A., Lorenzo S. D., Erb A., Feilitzsch F., Iachellini N. F., Fichtinger S., Fuss A., Gorla P., Hauff D., Jeskovsky M., Jochum J., Kaizer J., Kinast A., Kluck H., Kraus H., Langenkamper A., Mancuso M., Mokina V., Mondragon E., Olmi M., Ortmann T., Pagliarone C., Palusova V., Pattavina L., Petricca F., Potzel W., Povinec P., Probst F., Reindl F., Rothe J., Schaffner K., Schieck J., Schipperges V., Schmiedmayer D., Schonert S., Schwertner C., Stahlberg M., Stodolsky L., Strandhagen C., Strauss R., Turkoglu C., Usherov I., Willers M., Zema V., and Zeman J.

Abstract

The original version of this article unfortunately contains mistakes.

Published
2019

40. Distributions of 137Cs and 210Pb in moss collected from Belarus and Slovakia

Author

Aleksiayenak, Yu.V., Frontasyeva, M.V., Florek, M., Sykora, I., Holy, K., Masarik, J., Brestakova, L., Jeskovsky, M., Steinnes, E., Faanhof, A., and Ramatlhape, K.I.

Subjects
*MOSSES, *RADIOISOTOPES, *POLLUTION, *BACKGROUND radiation, *BIOINDICATORS
Abstract

Abstract: In the present work, moss samples collected in Slovakia and Belarus were assayed with respect to gamma-emitting radionuclides. The results for 137Cs and 210Pb are discussed. Moss was used for the first time in Belarus, as a biological indicator of radioactive environmental pollution in consequence of the Chernobyl accident in 1986. In Belarus, the maximum activity of 137Cs was observed in the Gomel region near Mazyr (6830 Bq/kg) and the minimum activity in the Vitebsyevsk Region near Luzhki-Yazno (5 Bq/kg). “Hot spots” were also observed near the towns Borisow and Yuratsishki. The results of measurements of 137Cs in moss samples collected in 2000, 2006 and 2009 in the same localities of Slovakia are presented and compared with the results of air monitoring of 137Cs carried out in Slovakia from 1977 until 2010. Measurements of the 210Pb concentration in moss samples collected over the territory of Slovakia showed, that the median value exceed 2.3 times median value of 210Pb obtained for Belarus moss. For that reason, the inhalation dose for man from 210Pb and 137Cs in Slovakia is more than twice as high as in Belarus, in spite of the initially very high 137Cs exposure in the latter country. [Copyright &y& Elsevier]

Published
2013
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results