6533b871fe1ef96bd12d0f93

RESEARCH PRODUCT

Muon multiplicities measured using an underground cosmic-ray array

Bayarto LubsandorzhievL. V. InzhechikA. VirkajarviWladyslaw Henryk TrzaskaL. B. BezrukovMaciej SlupeckiH. O. U. FynboPasi KuusiniemiJari JoutsenvaaraKai LooTimo EnqvistV. B. Petkov

subject

HistoryPhysics::Instrumentation and Detectorsmuonscosmic-raysCosmic rayEXTENSIVE AIR-SHOWERS01 natural sciencesEducationunderground detectorsNuclear physicsEVENTSData acquisition0103 physical sciencesDetector array010303 astronomy & astrophysicsDETECTORPhysicsMuon010308 nuclear & particles physicsDetectorMultiplicity (mathematics)LEPComputer Science ApplicationsDensity distributionKASCADE-GRANDEHigh Energy Physics::ExperimentEvent (particle physics)EMMA (Experiment with Multi-Muon Array)

description

EMMA (Experiment with Multi-Muon Array) is an underground detector array designed for cosmic-ray composition studies around the knee energy (or similar to 1 - 10 PeV). It operates at the shallow depth in the Pyhasalmi mine, Finland. The array consists of eleven independent detector stations similar to 15 m(2) 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.

http://urn.fi/URN:NBN:fi:jyu-201607143611