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Development and application of chip calorimeter as an X-ray detector

Authors
 Jonghyun Kim  ;  Sung Min Nam  ;  Heejun Jang  ;  Jae-Pil Chung  ;  Jin Sung Kim  ;  Byoung-Chul Kim  ;  Kook Jin Chun  ;  Wonhee Lee 
Citation
 CURRENT APPLIED PHYSICS, Vol.20(2) : 337-343, 2020 
Journal Title
 CURRENT APPLIED PHYSICS 
ISSN
 1567-1739 
Issue Date
2020
Keywords
Micro/nano fabrication ; Chip calorimeter ; Vanadium oxide ; Radiation detector
Abstract
Radiotherapy for cancer patients requires accurate measurement of the absorbed dose of radiation in a treatment planning step. Various types of radiation detectors are currently utilized for dose measurement. Among them, calorimeters are known to be the most precise detector for measuring absorbed dose, but their on-site application is limited by the large size of the equipment. We developed a miniaturized chip calorimeter for application as a radiation detector. The calorimetric radiation detector was built using micro/nano fabrication techniques, and consists of an SU-8 photoresist absorber and high-sensitivity vanadium oxide (VOx) thermistors. The thermistors had a temperature resolution of 135 μK, and the calorimeter showed a thermal conductance of 11 μW/K. The detector was irradiated with various X-ray dose rates from a linear accelerator, and the absorbed dose to SU-8 was measured. The detector responses showed high linearity with dose rates, demonstrating the feasibility of the radiation detector for practical uses.
Full Text
https://www.sciencedirect.com/science/article/pii/S1567173919303128#!
DOI
10.1016/j.cap.2019.11.020
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiation Oncology (방사선종양학교실) > 1. Journal Papers
Yonsei Authors
Kim, Jinsung(김진성) ORCID logo https://orcid.org/0000-0003-1415-6471
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/175232
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