Research and development of particle detectors for muon tomography and the CERN ALICE experiment

Oláh, L.

doi:10.15476/elte.2016.144

Cited by 3 publications

(1 citation statement)

References 66 publications

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“…Generally, x-rays are used for radiography. Electron, muon, gamma, neutron, positron beams can also be used for this purpose [3][4][5][6][7]. The gaseous detectors were mostly used as the ionization detectors for radiography studies [8].…”

Section: Introductionmentioning

confidence: 99%

A New Approach for Alpha Radiography by Triple THGEM using Monte Carlo Simulation and Measurement

2018

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In this research, alpha imaging in Self Quenching Streamer (SQS) mode is investigated using a triple Thick Gas Electron Multiplier (THGEM) detector by Monte Carlo method and experimental data. First, a semi-empirical equation is derived to represent the relation between the SQS voltage and the alpha energy in every hole of the triple THGEM. The accuracy of this equation is tested and confirmed by a high degree of consistency. Secondly, the images of objects that are irradiated by Am-241 alpha source (5.49 MeV) are recorded by a CMOS camera using triple THGEM detector in the SQS mode. The resolution of images in this paper is a function of the exposure time. For an alpha source with 150 kBq activity, an optimal time interval for exposure is about 30 sec. For exposure time less or more than 30 sec, the images are incomplete and ambiguous, respectively. The overall objective of this work is to facilitate the alpha radiography in nuclear imaging through a triple THGEM without any amplifier or complicated electrical equipment. K: Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc); Gaseous imaging and tracking detectors; Heavy-ion detectors; Micropattern gaseous detectors (MSGC, GEM, THGEM, RETHGEM, MHSP, MICROPIC, MICROMEGAS, InGrid, etc) 1Corresponding author.

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Section: Introductionmentioning

confidence: 99%

A New Approach for Alpha Radiography by Triple THGEM using Monte Carlo Simulation and Measurement

2018

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Development of Multi‐Wire Proportional Chamber‐Based Trackers for Muography

2022

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High-definition and low-noise muography of the Sakurajima volcano with gaseous tracking detectors

Oláh

Tanaka

Ohminato

et al. 2018

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117

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Muography is a novel method to highly resolve the internal structure of active volcanoes by taking advantage of the cosmic muon’s strong penetration power. In this paper, we present the first high-definition image in the vicinity of craters of an erupting volcano called Sakurajima, Kyushu, Japan. The muography observation system based on the technique of multi-wire proportional chamber (mMOS) has been operated reliably during the data taking period of 157 days. The mMOS measured precisely the flux of muons up to the thickness of 5,000 meter-water-equivalent. It was shown that high-definition density maps around the Craters A, B and Showa could be determined with a precision of less than 7.5 × 7.5 m2 which earlier had not yet been achieved. The observed density distribution suggests that the fall back deposits filled the magma pathway and increased their density underneath Craters A and B.

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Research and development of particle detectors for muon tomography and the CERN ALICE experiment

Cited by 3 publications

References 66 publications

A New Approach for Alpha Radiography by Triple THGEM using Monte Carlo Simulation and Measurement

A New Approach for Alpha Radiography by Triple THGEM using Monte Carlo Simulation and Measurement

Development of Multi‐Wire Proportional Chamber‐Based Trackers for Muography

High-definition and low-noise muography of the Sakurajima volcano with gaseous tracking detectors

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