TITLE:
The Influences of an Embedded Structure Fiber-Optic Radiation Dosimeter in Different SSD and Beam Field Size
AUTHORS:
Yaosheng Hu, Zhuang Qin, Yu Ma, Chuntong Jiang, Tianci Xie, Wenhui Zhao, Weimin Sun, Daxin Zhang, Ziyin Chen, Boran Wang, He Tian, Elfed Lewis
KEYWORDS:
Optical Fiber Sensing, Radiation, SSD (Source to Surface Distance), Beam Field Size
JOURNAL NAME:
Optics and Photonics Journal,
Vol.7 No.8B,
August
10,
2017
ABSTRACT: With a rapidly increasing demand and widespread use of radiotherapy treatment, the subject area of in-vivo real time dose rate dosimeters has become a significant area of study. An embedded structure fiber-optic radiation dosimeter has proved to be a promising candidate to fulfil this role because of its high SNR (signal-to-noise ratio) and excellent light conversion efficiency. In this paper, the properties of this kind of dosimeter with respect to different SSD (Source to Surface Distance) and beam field size in a clinical Linac are studied. The characteristics of the dosimeter were evaluated by the sensor’s output intensity response in these conditions.