Muon multiplicities measured using an underground cosmic-ray array
Kuusiniemi, P., Enqvist, T., Bezrukov, L., Fynbo, H., Inzhechik, L., Joutsenvaara, J., . . . Virkaj ärvi, A. (2016). Muon multiplicities measured using an underground cosmic-ray array. In N. Fornengo, M. Regis, & H.-S. Zechlin (Eds.), XIV International Conference on Topics in Astroparticle and Underground Physics (TAUP 2015) (pp. 052021). Journal of Physics: Conference Series, 718. Institute of Physics Publishing Ltd.. doi:10.1088/1742-6596/718/5/052021
Published inJournal of Physics: Conference Series;718
Loo, Kai |
© the Authors, 2016. This is an open access article published by IoP and distributed under the terms of the Creative Commons Attribution 3.0 licence.
EMMA (Experiment with Multi-Muon Array) is an underground detector array designed for cosmic-ray composition studies around the knee energy (or ∼ 1 − 10 PeV). It operates at the shallow depth in the Pyh¨asalmi mine, Finland. The array consists of eleven independent detector stations ∼ 15 m2 each. Currently seven stations are connected to the DAQ and the rest will be connected within the next few months. EMMA will determine the multiplicity, the lateral density distribution and the arrival direction of high-energy muons event by event. The preliminary estimates concerning its performance together with an example of measured muon multiplicities are presented.