2016/05/01 by Do Yoon Kim, Cheolmin Ham, Jae Won Shin +6
Medicine · Physics and Astronomy · #Alpha (finance) #Alpha decay #Alpha particle #Business #Detector #Energy (signal processing) #Energy spectrum #MicroMegas detector #Nuclear physics #Optics #Particle Detector Development and Performance #Physics #Radiation Detection and Scintillator Technologies #Radiation Therapy and Dosimetry #Spectrum (functional analysis) #nucl-ex #physics.ins-det
paper · pdf · doi:10.3938/jkps.68.1060
published as Journal of the Korean Physical Society, vol 68, No. 9, 2016, P. 1060~1068
openalex publication_date 2016/05/01 · arxiv created 2016/05/03 · arxiv updated 2016/05/25 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We have developed MICROMEGAS (MICRO MEsh GASeous) detectors for detecting a 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 a particles from the 241 Am source can be varied by changing the flight path of the a particle from the 241 Am source. The channel numbers of the experimentally-measured pulse peak positions for different energies of the a 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 a particles is done. For the energy calibration, the thickness of the ionization region is adjusted so that a 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 a particles under the present conditions is found to be ~97.3%.