Cyclotrons2013 - List of Authors (Shin, D.H.)

Paper

Title

Page

Secondary Particle Dose and RBE Measurements Using High-Energy Proton Beams

464

M. Ghergherehchi, J.-S. Chai
SKKU, Suwon, Republic of Korea
D.H. Shin
NCC, Goyang, Kyeonggi, Republic of Korea

High- and intermediate-energy protons are not able to directly form a track in a CR-39 etch detector (TED). Such detectors, however, can be used for the detection and dosimetry of the beams of these particles through the registration of secondary charged particles with sufficiently high values of linear energy transfer (LET). The studied were realized in a clinical proton beam of the NCC Korea, with primary energy of 72 to 220 MeV (1.1 to 0.4 KeV/ μm). The contribution of the secondary particle dose and the value of RBE both increase with decreasing proton energy. A strong agreement between experimentally obtained results and the predicted total cross sections was verified by the Alice code. Stimulation of the secondary particle dose by the Geant4 code also predicted results in agreement by experimental results. It is clear that higher cross sectional values lead to an increased production of secondary particles. This secondary particle dose is highly important for applications such as radiotherapy, radiobiology, and radiation protection.

Slides FR1PB02 [2.955 MB]

Paper	Title	Page
FR1PB02	Secondary Particle Dose and RBE Measurements Using High-Energy Proton Beams	464
	M. Ghergherehchi, J.-S. Chai SKKU, Suwon, Republic of Korea D.H. Shin NCC, Goyang, Kyeonggi, Republic of Korea
	High- and intermediate-energy protons are not able to directly form a track in a CR-39 etch detector (TED). Such detectors, however, can be used for the detection and dosimetry of the beams of these particles through the registration of secondary charged particles with sufficiently high values of linear energy transfer (LET). The studied were realized in a clinical proton beam of the NCC Korea, with primary energy of 72 to 220 MeV (1.1 to 0.4 KeV/ μm). The contribution of the secondary particle dose and the value of RBE both increase with decreasing proton energy. A strong agreement between experimentally obtained results and the predicted total cross sections was verified by the Alice code. Stimulation of the secondary particle dose by the Geant4 code also predicted results in agreement by experimental results. It is clear that higher cross sectional values lead to an increased production of secondary particles. This secondary particle dose is highly important for applications such as radiotherapy, radiobiology, and radiation protection.
	Slides FR1PB02 [2.955 MB]