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Development
of Affordable Compact Muon Radiology Camera using Geiger–Müller
Tube Arrays.
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Abstract:
Geiger–Müller Muon Telescope in Taiwan (GMT2
) is an education program for undergraduate
students in LeCosPA, National Taiwan University (NTU), to develop an
affordable compact Muon
Radiology Camera using Geiger–Müller (GM) Tube Arrays. GMT2
consists of two 18 cm x 18 cm identical
detector planes aligned on the axis at a distance. The arrival
direction of a muon can be obtained by
extrapolating the impact points recorded on each detector plate. The
field of view (FOV) is tunable by
adjusting the distance between the detector planes. A detector plane is
composed of two orthogonal 1-D
arrays of 8 GM tubes (L=18cm, D=22mm), providing an 8x8 grid for the
detector plane. A cost-effective
high voltage supply and readout electronics with a micro-controller
were developed for this project. A
radiograph of Leung Cosmology Hall building at NTU was successfully
taken as the first demonstration of
this project. In this presentation, we describe design, production,
calibration, as well as simulation studies.
Future prospects are also discussed. |
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PORTABLE
MUON TELESCOPE FOR COSMIC RAY MONITORING
Nikolay N. Petrov, Nikolay Goutev,
Hristo Protohristov, Dimitar Tonev, Galina Dimitrova
Institute
for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences,
Sofia, Bulgaria
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Abstract.
A portable muon telescope for monitoring of cosmic rays has been
developed, based on GM counters shielded with lead adsorbers. The
triple coincidence mode of operation results in a relatively good
spatial resolution allowing to measure the cosmic ray flux, its
east-west anomaly and also to detect the consequences of the special
theory of relativity. The apparatus is suitable for long term
observations of the cosmic ray flux and due to its simple and robust
construction can also be used also for educational purposes.
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