Cosmic Background Measurements at a Proposed Underground Laboratory by the REGARD Muontomograph

6th Nuclear Physics in Astrophysics

物理学;天文学

Oláh, L.^1,2 ; Surányi, G.^3 ; Barnaföldi, G.G.^2 ; Bemmerer, D.^4 ; Hamar, G.^2 ; Melegh, H.G.^2 ; Varga, D.^1

Eötvös Loránd University, 1/A Pázmány P. s., Budapest

H-1117, Hungary^1

Wigner Research Centre for Physics of HAS, PO Box 49, Budapest

H-1525, Hungary^2

Geological, Geophysical and Space Science Research Group of the HAS, 1/A Pázmány P. s., Budapest

H-1117, Hungary^3

Helmholtz-Zentrum Dresden Rossendorf, Bautzner Landstraße 400, Dresden

01328, Germany^4

关键词: Angular acceptance;    Angular resolution;    Cathode chambers;    Cosmic particles;    Experimental facilities;    Geophysical applications;    Tracking system;    Underground laboratory;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/665/1/012032/pdf
DOI  :  10.1088/1742-6596/665/1/012032

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

A portable cosmic particle tracking detector has been developed by the REGARD group with angular resolution of 10 mrad. The Close Cathode Chamber-based tracking system is optimized for environmental and geophysical applications with its weight of 15 kg and size of 51 cm × 43 cm × 32 cm. Our aim was to determine the cosmic background at the site of the proposed accelerator and experimental facilities at an approximate 50 meter depth in Felsenkeller, Dresden, Germany. Here, we present our high-precision muon flux measurements, which have been performed during 44 days in one of the tunnels. Angular acceptance of our mapping covered full 2π solid angle of the upper hemisphere. The maximum flux value is found to be below 2.5 m-2sr-1s-1.