A4 Artikkeli konferenssijulkaisussa
High-multiplicity muon events observed with EMMA array (2020)
Trzaska, W. H., Bezrukov, L., Enqvist, T., Inzhechik, L., Joutsenvaara, J., Kuusiniemi, P., Loo, K., Lubsandorzhiev, B., & Słupecki, M. (2020). High-multiplicity muon events observed with EMMA array. In TAUP 2019 : 16th International Conference on Topics in Astroparticle and Underground Physics (Article 012085). IOP Publishing. Journal of Physics: Conference Series, 1468. https://doi.org/10.1088/1742-6596/1468/1/012085
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Trzaska, Wladyslaw Henryk; Bezrukov, Leonid; Enqvist, Timo; Inzhechik, Lev; Joutsenvaara, Jari; Kuusiniemi, Pasi; Loo, Kai; Lubsandorzhiev, Bayarto; Słupecki, Maciej
Emojulkaisu: TAUP 2019 : 16th International Conference on Topics in Astroparticle and Underground Physics
Konferenssin paikka ja aika: Toyama, Japan, 9.-13.9.2019
Lehti tai sarja: Journal of Physics: Conference Series
ISSN: 1742-6588
eISSN: 1742-6596
Julkaisuvuosi: 2020
Sarjan numero: 1468
Artikkelinumero: 012085
Kustantaja: IOP Publishing
Julkaisumaa: Britannia
Julkaisun kieli: englanti
DOI: https://doi.org/10.1088/1742-6596/1468/1/012085
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/68376
Tiivistelmä
High-multiplicity data, collected with a segmented scintillator array of the cosmic-ray experiment EMMA (Experiment with Multi-Muon Array), is presented for the first time. The measurements were done at the depth of 75 meters (210 m.w.e.) in the Pyhäsalmi mine in Finland. EMMA uses two types of detectors: drift chambers and plastic scintillation detectors. The presented data were acquired over the period between December, 2015 and April, 2018 using 128-800 plastic scintillator pixels probing the fiducial area of ˜100 m2. The results are being interpreted in terms of CORSIKA simulations. Several events with densities in excess of 10 muons per m2 were observed. At the next stage of the analysis, the high-multiplicity events will be matched with precision tracking data extracted from the multi-layer drift chambers of EMMA. Observation of high-density muon bundles was first reported by the LEP experiments: DELPHI, L3+C, and ALEPH. More recently, the ALICE experiment at CERN has provided new cosmic-ray results together with improved interpretation benefiting from the updated cross section values extracted from LHC results. While the tracking performance of ALICE is superior to EMMA, the duration of ALICE cosmic-ray measurements is very limited. Over the period of 2010–2018 the total exposure was only 93 days while EMMA, having a similar overburden provides a larger footprint and collects data continuously.
YSO-asiasanat: hiukkasfysiikka; astrofysiikka; kosminen säteily
Liittyvät organisaatiot
OKM-raportointi: Kyllä
Raportointivuosi: 2020
JUFO-taso: 1
