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Muon Telescope

MT0 Data (from January 1971 to December 2003)

MT7 Data (from January 1972 to December 2003)

Since May 2009 muon telescopes have been installed in a new place at the earth’s surface and in the shaft at levels 7,20 and 40 m w.e. Particles are registered from 5 following directions: the vertical and also 30 and 60 degrees to the north and south of it. Each telescope consists of 52 gas-discharge SGM-14 counters and operates on the triple coincidences.

Characteristics of Muon Telesopes

1. Median energies (GeV) for muon telescopes for different depths and directions of the registration

Telescope Vertical 300 N, S 600 N, S
МТ 0 60 63 82
МТ 7 77 82 98
МТ 20 110 115 130
МТ 40 146 156 168

2. Scaling factor and barometric coefficients:

Type of the Instrument Scaling Factor Barometric Coefficients, % / mb
Vertical N30 S30 N60 S60 Vertical N30 S30 N60 S60
0 m w.e. 256 128 128 16 16 -0.193 -0.190 -0.193 -0.172 -0.180
7 m w.e. 128 64 64 8 8 -0.125 -0.121 -0.124 -0.110 -0.110
20 m w.e.  64 64 64 8 8 -0.076 -0.073 -0.076 -0.054 -0.063
40 m w.e. 32 16 16 8 8 -0.052 -0.057 -0.048 -0.046 -0.070

 3. Normalized coupling coefficients

coupl-MT2

4. Zenith and azimuth direction diagrams:

for vertical for direction 300 for direction 600
diagr-vertical4 diagr-30deg4 diagr-60deg4

5. Receiving vectors:

for the 1st spherical harmonic of the cosmic ray distribution function for the 2nd spherical harmonic of the cosmic ray distribution function
1harm2  2harm2 
MT 0 m w.e. MT on the depth of 7 m w.e. MT on the depth of 20 m w.e. MT on the depth of 40 m w.e.
MT0 data  MT7 data  MT20 data MT40 data 
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