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Emittance Measurement for Beamline Extension at the PET Cyclotron


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1 Department of Energy and Environment Engineering, Dongguk University, Gyeongju Campus, Seokjang-dong, Gyeongju-si, Gyeongsangbuk-do 38066, Korea, Republic of
 

Particle-induced X-ray emission is used for determining the elemental composition of materials. This method uses low-energy protons (of several MeV), which can be obtained from high-energy (of tens MeV) accelerators. Instead of manufacturing an accelerator for generating the MeV protons, the use of a PET cyclotron has been suggested for designing the beamline for multipurpose applications, especially for the PIXE experiment, which has a dedicated high-energy (of tens MeV) accelerator. The beam properties of the cyclotron were determined at this experimental facility by using an external beamline before transferring the ion beam to the experimental chamber. We measured the beam profile and calculated the emittance using the pepper-pot method. The beam profile was measured as the beam current using a wire scanner, and the emittance was measured as the beam distribution at the beam dump using a radiochromic film.We analyzed the measurement results and are planning to use the results obtained in the simulations of external beamline and aligned beamline components. We will consider energy degradation after computing the beamline simulation.The experimental study focused on measuring the emittance from the cyclotron, and the results of this study are presented in this paper.

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  • Emittance Measurement for Beamline Extension at the PET Cyclotron

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Authors

Sae-Hoon Park
Department of Energy and Environment Engineering, Dongguk University, Gyeongju Campus, Seokjang-dong, Gyeongju-si, Gyeongsangbuk-do 38066, Korea, Republic of
Sang-Hoon Lee
Department of Energy and Environment Engineering, Dongguk University, Gyeongju Campus, Seokjang-dong, Gyeongju-si, Gyeongsangbuk-do 38066, Korea, Republic of
Yu-Seok Kim
Department of Energy and Environment Engineering, Dongguk University, Gyeongju Campus, Seokjang-dong, Gyeongju-si, Gyeongsangbuk-do 38066, Korea, Republic of

Abstract


Particle-induced X-ray emission is used for determining the elemental composition of materials. This method uses low-energy protons (of several MeV), which can be obtained from high-energy (of tens MeV) accelerators. Instead of manufacturing an accelerator for generating the MeV protons, the use of a PET cyclotron has been suggested for designing the beamline for multipurpose applications, especially for the PIXE experiment, which has a dedicated high-energy (of tens MeV) accelerator. The beam properties of the cyclotron were determined at this experimental facility by using an external beamline before transferring the ion beam to the experimental chamber. We measured the beam profile and calculated the emittance using the pepper-pot method. The beam profile was measured as the beam current using a wire scanner, and the emittance was measured as the beam distribution at the beam dump using a radiochromic film.We analyzed the measurement results and are planning to use the results obtained in the simulations of external beamline and aligned beamline components. We will consider energy degradation after computing the beamline simulation.The experimental study focused on measuring the emittance from the cyclotron, and the results of this study are presented in this paper.

Keywords


English