In-Core Power Measurement Using SiC Semiconductor Detector
- Title
- In-Core Power Measurement Using SiC Semiconductor Detector
- Author
- 김용균
- Keywords
- Silicon carbide; Semiconductor detector; In-core detector; In-core experiment; Radiation damage
- Issue Date
- 2020-02
- Publisher
- KOREAN PHYSICAL SOC
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v. 76, no. 4, page. 306-310
- Abstract
- A SiC detector was fabricated and tested in harsh radiation environment of the High Flux Advanced Neutron Application Reactor (HANARO) reactor core at Korea Atomic Energy Research Institute (KAERI). A 4H-SiC with 30 mu m thick epitaxial layer was used as the radiation sensor, and the detector was designed to be tolerable against thermal and radiation damages. Alpha response and I-V characteristics of fabricated SiC sensor was measured and detection performance of the SiC detector was evaluated in a neutron field of HANARO ex-core neutron irradiation facility. After preliminary tests, reactor power monitoring using the SiC detector was carried out by inserting it into the HANARO irradiation hole, IP-4. Radiation-induced current of the detector was recorded as reactor power increased up to 10 MWth. Maximum thermal and fast neutron fluxes were 9.4x10(12) and 2.5x10(9) neutrons/cm(2)/sec, respectively, and total neutron fluence irradiated on the detector was 4.7x10(16) neutrons/cm(2). The detector showed good linearity of response up to the tested fluence, with R-2 = 0.9997. Response speed of SiC detector was compared to that of a Rh self-powered neutron detector (SPND) in terms of signal saturation time. Averaged SiC detector saturation time was 12.8 seconds, approximately 11 times faster that of the Rh SPND.
- URI
- https://link.springer.com/article/10.3938%2Fjkps.76.306https://repository.hanyang.ac.kr/handle/20.500.11754/161211
- ISSN
- 0374-4884; 1976-8524
- DOI
- 10.3938/jkps.76.306
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > NUCLEAR ENGINEERING(원자력공학과) > Articles
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