Cyclotrons2013 - List of Keywords (background)

Paper	Title	Other Keywords	Page
TUPPT008	A Profile Analysis Method for High-Intensity DC Beams Using a Thermographic Camera	diagnostics, target, neutron, beam-transport	168
	K. Katagiri, S. Hojo, T. Honma, A. Noda, K. Noda NIRS, Chiba-shi, Japan
	A new analysis method for the digital-image processing apparatus has been developed to evaluate profiles of high-intensity DC beams from temperature images of irradiated-thin foils. Numerical calculations were performed to examine the reliability and the performance of the profile analysis method. To simulate the temperature images acquired by a thermographic camera, temperature distributions were numerically calculated for various beam parameters. The noises in the temperature images, which are added by the camera sensor, were also simulated to be taken its effect into account. By using the profile analysis method, the beam profiles were evaluated from the simulated-temperature images, and they were compared with the exact solution of the beam profiles. We found that the profile analysis method is adaptable over a wide beam current range of ~0.1 – 10 μA, even if a general-purpose thermographic camera with rather high noise (NETD ~ 0.3 K, NETD: Noise Equivalent Temperature Difference) is employed.

FR1PB02	Secondary Particle Dose and RBE Measurements Using High-Energy Proton Beams	proton, radiation, factory, ion	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

Other Keywords

Page

TUPPT008

A Profile Analysis Method for High-Intensity DC Beams Using a Thermographic Camera

diagnostics, target, neutron, beam-transport

168

K. Katagiri, S. Hojo, T. Honma, A. Noda, K. Noda
NIRS, Chiba-shi, Japan

A new analysis method for the digital-image processing apparatus has been developed to evaluate profiles of high-intensity DC beams from temperature images of irradiated-thin foils. Numerical calculations were performed to examine the reliability and the performance of the profile analysis method. To simulate the temperature images acquired by a thermographic camera, temperature distributions were numerically calculated for various beam parameters. The noises in the temperature images, which are added by the camera sensor, were also simulated to be taken its effect into account. By using the profile analysis method, the beam profiles were evaluated from the simulated-temperature images, and they were compared with the exact solution of the beam profiles. We found that the profile analysis method is adaptable over a wide beam current range of ~0.1 – 10 μA, even if a general-purpose thermographic camera with rather high noise (NETD ~ 0.3 K, NETD: Noise Equivalent Temperature Difference) is employed.

FR1PB02

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

proton, radiation, factory, ion

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]