Simulation studies on the polarized positron generation from circularly polarized gamma-rays

LI Xiao-Ping; PEI Guo-Xi; PEI Shi-Lun

doi:10.1088/1674-1137/36/10/017

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2024年10月30日

Chinese Physics C> 2012, Vol. 36> Issue(10) : 1009-1012 DOI: 10.1088/1674-1137/36/10/017

Simulation studies on the polarized positron generation from circularly polarized gamma-rays

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Abstract：
Polarized positrons can be generated through the electron-positron pair creation from circularly polarized gamma-rays hitting a conversion target. Laser-Compton scattering is an efficient method to generate circularly polarized gamma-rays. Simulation studies on these two processes have been done with the Monte Carlo codes, CAIN and GEANT4. Using CAIN to simulate the Laser-Compton scattering process, the energy spectrum of the generated polarized photons could be obtained. GEANT4 was used to study the yield, energy spectrum and the mean polarization of the positrons emanating from the conversion target. To increase the yield of the generated positrons, an optimization study on the thickness of conversion target was also performed.

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LI Xiao-Ping, PEI Guo-Xi and PEI Shi-Lun. Simulation studies on the polarized positron generation from circularly polarized gamma-rays[J]. Chinese Physics C, 2012, 36(10): 1009-1012. doi: 10.1088/1674-1137/36/10/017

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Received: 2012-01-05
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Simulation studies on the polarized positron generation from circularly polarized gamma-rays

Corresponding author: LI Xiao-Ping,

Received Date: 2012-01-05
Accepted Date: 1900-01-01
Available Online: 2012-10-05

Abstract: Polarized positrons can be generated through the electron-positron pair creation from circularly polarized gamma-rays hitting a conversion target. Laser-Compton scattering is an efficient method to generate circularly polarized gamma-rays. Simulation studies on these two processes have been done with the Monte Carlo codes, CAIN and GEANT4. Using CAIN to simulate the Laser-Compton scattering process, the energy spectrum of the generated polarized photons could be obtained. GEANT4 was used to study the yield, energy spectrum and the mean polarization of the positrons emanating from the conversion target. To increase the yield of the generated positrons, an optimization study on the thickness of conversion target was also performed.