Simulation study for the energy and position reconstruction performances of the beam monitoring system of Carbon Ion Radiation Therapy using GEANT4
Abstract
Carbon Ion Radiation Therapy is operated in several countries because of its advantage to have high dose concentration and/or high linear energy transfer (LET). To estimate the beam performance of Carbon Ion Radiation Therapy, we target the 1% energy and 1 mm2 position resolutions of the beam monitoring system. The beam monitoring system consists of a scintillation crystal and fiber hodoscope. The scintillation crystal is 20 × 20 × 120mm3 and its candidates are LYSO, CsI and BGO. The fiber hodoscope is composed of 1 mm thickness scintillation fibers and the fibers are arranged vertically for 2D reconstruction. With GEANT4 simulation, we verify the performance of our beam monitoring system. The energy response of the LYSO and BGO scintillators is linear within ± 2%. The energy resolution of each crystal candidate achieves the goal; LYSO (0.061%), CsI (0.20%) and BGO (0.10%). The position is reconstructed via fiber hodoscope within 5% uncertainty.
Article Details
Authors (34)
Yun Eo
Na Hye Kwon
Joonsuk Bae
Byunggu Cheon
Guk Cho
Suyong Choi
Hyunsuk Do
Seungkyu Ha
Changgi Huh
Kyuyeong Hwang
Haeun Jang
Seoyun Jang
Yoonjun Jang
Jinryong Jeong
Beomkyu Kim
Bobae Kim
Dongwoon Kim
Sungwon Kim
Sanghyun Ko
Hyupwoo Lee
Hyungjun Lee
Jason Lee
Junghyun Lee
Sehwook Lee
Woochan Lee
Yunjae Lee
Sanghoon Lim
Hyesung Park
Jaehyeok Ryu
School of Integrated Technology, College of Computing
Jin Sung Kim
Min Sang Ryu
Hwidong Yoo
Dong Wook Kim
Minsuk Kim