| Autor: |
Kim, Do Yoon, Ham, Cheolmin, Shin, Jae Won, Park, Tae-Sun, Hong, Seung-Woo, Andriamonje, Samuel, Kadi, Yacine, Tenreiro, Claudio |
| Rok vydání: |
2016 |
| Předmět: |
|
| Zdroj: |
Journal of the Korean Physical Society, vol 68, No. 9, 2016, P. 1060~1068 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.3938/jkps.68.1060 |
| Popis: |
We have developed MICROMEGAS (MICRO MEsh GASeous) detectors for detecting {\alpha} particles emitted from an 241-Am standard source. The voltage applied to the ionization region of the detector is optimized for stable operation at room temperature and atmospheric pressure. The energy of {\alpha} particles from the 241-Am source can be varied by changing the flight path of the {\alpha} particle from the 241 Am source. The channel numbers of the experimentally-measured pulse peak positions for different energies of the {\alpha} particles are associated with the energies deposited by the alpha particles in the ionization region of the detector as calculated by using GEANT4 simulations; thus, the energy calibration of the MICROMEGAS detector for {\alpha} particles is done. For the energy calibration, the thickness of the ionization region is adjusted so that {\alpha} particles may completely stop in the ionization region and their kinetic energies are fully deposited in the region. The efficiency of our MICROMEGAS detector for {\alpha} particles under the present conditions is found to be ~ 97.3 %. |
| Databáze: |
arXiv |
| Externí odkaz: |
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