Directional Dark Matter Searches with CYGNO

Amaro, F. D.; Baracchini, E.; Benussi, L.; Bianco, S.; Capoccia, C.; Caponero, M.; Cavoto, G.; Cortez, A.F.V.; Costa, I. A.; Dané, E.; Dho, Giorgio; Marco, E. Di; D'imperio, Giulia; Giambattista, Flaminia Di; Gregorio, Robert Renz Marcelo; Iacoangeli, F.; Júnior, Herman Pessoa Lima; Júnior, Amaro da Silva Lopes; Maccarrone, G.; Mano, R.D.P.; Marafini, M.; Mazzitelli, G.; McLean, Alasdair Gregor; Messina, A.; Monteiro, C. M. B.; Nobrega, R. Antunes; Pains, Igor Fonseca; Paoletti, E.; Passamonti, L.; Pelosi, Sandro; Petrucci, F.; Piacentini, Stefano; Piccolo, D.; Pierluigi, D.; Pinci, D.; Prajapati, A. K.; Renga, F.; Roque, Rita Joanna da Cruz; Rosatelli, F.; Russo, A.; Santos, J.M.F. dos; Saviano, G.; Spooner, N. J. C.; Tesauro, Roberto; Tomassini, S.; Torelli, Samuele

doi:10.3390/particles4030029

Cited by 4 publications

(1 citation statement)

References 37 publications

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“…For this reason it is widely used as a clustering algorithm, in addition to having inspired several other implementations. In the CYGNO experiment [2,3], an adaptation of it was implemented using the pixel's intensities in the images as weights in the search for high-density regions [4]. For many experiments based on particle detectors, it is important that the individual tracks produced by different particles are reconstructed exploiting clusters, as is the case of the CYGNO experiment.…”

Section: Introductionmentioning

confidence: 99%

Directional iDBSCAN to detect cosmic-ray tracks for the CYGNO experiment

Amaro,

Antonietti,

Baracchini

et al. 2023

Meas. Sci. Technol.

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The CYGNO experiment aims to study rare events related to the search for low-mass Dark Matter and solar neutrino events. One of the main components of background comes from cosmic rays that generate long tracks in the detector's images. The interaction of such particles with the gas releases a variable energy profile along its trajectory to form tracks with multiple cores that can be easily reconstructed erroneously by being split into more than one cluster. Thus, this work offers a newly adapted version of the well-known DBSCAN algorithm, called iDDBSCAN, which exploits the directional characteristics of the clusters found by the DBSCAN to improve its clustering efficiency when dealing with multi-core tracks. A description of this algorithm is given in this paper, including validation of its parameters and assessment of its impact when included in the event selection routine of the experiment. To generate background events, data acquisition was performed with the detector installed in an overground laboratory, leaving it exposed to natural radiation. As a signal of interest, important to characterize many aspects of the detection system in the low energy region, a 55Fe source was used. The achieved results showed that the iDDBSCAN algorithm is capable of improving the background rejection of the experiment, through a more accurate reconstruction of the tracks produced by natural radiation such as cosmic rays, without deteriorating its signal detection efficiency and energy estimation.

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Section: Introductionmentioning

confidence: 99%

Directional iDBSCAN to detect cosmic-ray tracks for the CYGNO experiment

Amaro,

Antonietti,

Baracchini

et al. 2023

Meas. Sci. Technol.

Self Cite

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Secondary scintillation yield from GEM electron avalanches in - and - -isobutane for CYGNO — Directional Dark Matter search with an optical TPC

Amaro,

Baracchini,

Benussi

et al. 2024

Physics Letters B

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Review on dark matter searches

Cebrián

2023

J. Phys.: Conf. Ser.

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Dark matter particles populating our galactic halo could be directly detected by measuring their scattering off target nuclei or electrons in a suitable detector. As this interaction is expected to occur with very low probability and would generate very small energy deposits, the detection is challenging; the possible identification of distinctive signatures (like an annual modulation in the interaction rates or directionality) to assign a dark matter origin to a possible observation is being considered. Here, the physics case of different dark matter direct detection experiments will be presented and the different and complementary techniques which are being applied or considered will be discussed, summarizing their features and latest results obtained. Special focus will be made on TPC-related projects; experiments using noble liquids have presently a leading role to constrain interaction cross sections of a wide range of dark matter candidates and gaseous detectors are very promising to explore specifically low mass dark matter as well as to measure directionality.

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Directional Dark Matter Searches with CYGNO

Cited by 4 publications

References 37 publications

Directional iDBSCAN to detect cosmic-ray tracks for the CYGNO experiment

Directional iDBSCAN to detect cosmic-ray tracks for the CYGNO experiment

Secondary scintillation yield from GEM electron avalanches in - and - -isobutane for CYGNO — Directional Dark Matter search with an optical TPC

Review on dark matter searches

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