Speaker
Laszlo Olah
(Eötvös Loránd University and Wigner RCP of the HAS)
Description
A portable tracking detector for muon radiography experiments
Cosmic muon radiography is a tool for examination of large scale objects via proper measurement of the absorption of the atmospheric muons. In this application of particle physics detectors standard HEP techniques encounter new challenges.
The REGARD group of Wigner RCP (Budapest) has developed a portable muon telescope for outdoor measurements with sensitive area of 0.1 square meter and weight of 15 kg [1,2,3]. The designed detector is based on the novel Close Cathode Chambers [4,5] which provide a cheap, easy handling, lightweight, high efficiency detector system, able to work even at harsh conditions. The total power consumption of the complete detector system (with HV and DAQ modules including) is less than 5 W.
The two dimensional angular distribution of atmospheric muons have been measured at ground and shallow depth underground (10-50 meters). The multiple scattering of muons in rock has been investigated experimentally and by GEANT4 simulations. The contamination of the track sample with soft component of cosmic radiation (electron and gamma) has been estimated. The applicability of the detector as a muon tomograph has been demonstrated via reconstruction of an existing underground tunnel system.
[1] G. G. Barnaföldi et al.: NIM A689 (2012) 60-69
[2] L. Oláh et al.: Geosci. Instrum. Method. Data Syst. (2012) 2 781-800
[3] L. Oláh et al: Adv. in HEP (2013) 560192 1-7
[4] D. Varga et al.: NIM A648 (2011) 163-167
[5] D. Varga et al.: NIM A698 (2013) 11-18
Primary authors
Dr
Dezso Varga
(Wigner RCP of the HAS)
Dr
Gergely Barnafoldi
(Wigner RCP of the HAS)
Dr
Gergely Surányi
(Geological, Geophysical and Space Science Research Group of the HAS)
Gergo Hamar
(Wigner RCP of the HAS)
Hunor Gergely Melegh
(Wigner RCP of the HAS)
Laszlo Olah
(Eötvös Loránd University and Wigner RCP of the HAS)
