DocumentCode :
3201864
Title :
Characteristic Experimentations of Degrader and Scatterer at MC-50 Cyclotron
Author :
Lee, S.K. ; Lee, H.R. ; Kim, K.R. ; Park, B.S. ; Choi, B.H.
Author_Institution :
KAERI, Daejeon, Korea, sk-lee@kaeri.re.kr
fYear :
2005
fDate :
16-20 May 2005
Firstpage :
1356
Lastpage :
1358
Abstract :
Building proton beam user facilities, especially deciding beam energy level, depends on the attached proton accelerator and users´ needs. To adjust beam energy level, two methods are generally used. One is to directly adjust the beam in the accelerator. The other is to adjust beam energy after extracting from the accelerator. Degrader/Scatterer System has been installed in the MC-50 Cyclotron to adjust energy level of the beam used for various application fields. Its degrader and scatterer are made of Al foils and Au foils, respectively. Al thickness are 2, 1, 0.5, 0.3, 0.2, 0.1, 0.05, 0.03, 0.02, 0.01mm and Au thickness are 0.2, 0.1, 0.05, 0.03, 0.02, 0.01mm, respectively. In this study, suitable beam condition was adjusted through overlapping Al/Au foils of various thickness through simulation results. After that, LET(Linear Energy Transfer) value was indirectly acquired by measuring the bragg peak of the external beam through PMMA plastic Phantom and profile was measured by film dosimetry.
Keywords :
Cyclotrons; Degradation; Energy exchange; Energy measurement; Energy states; Gold; Particle beams; Plastics; Proton accelerators; Scattering;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the
Print_ISBN :
0-7803-8859-3
Type :
conf
DOI :
10.1109/PAC.2005.1590760
Filename :
1590760
Link To Document :
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