Research progress of in-pile calorimeter for measuring nuclear heating rate
ZHANG Junxin,
ZHANG Liang,
QU Guofeng,
MA Tianchi,
REN Feixu,
PENG Xingjie,
HAN Jifeng,
ZHAO Guang
Affiliations
ZHANG Junxin
Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610065, China
ZHANG Liang
Nuclear Power Institute of China, Chengdu 610005, China
QU Guofeng
Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610065, China
MA Tianchi
Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610065, China
REN Feixu
Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610065, China
PENG Xingjie
Nuclear Power Institute of China, Chengdu 610005, China
HAN Jifeng
Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610065, China
ZHAO Guang
Nuclear Power Institute of China, Chengdu 610005, China
The nuclear heating rate is a critical parameter for reactor core design and irradiation tests, it is typically determined via experimental measurements in a reactor experimental channel. In-pile calibration of calorimeter is an important method for measuring the nuclear heating rate in a fission reactor. This paper summarizes the working principle of the common in-pile calorimeter and reviews the current situation and research progress with regard to in-pile calorimetry employed worldwide. The structural design and performance characteristics of single-cell and multi-cell (differential) calorimeters are compared, and the design method of multimodal integrated measurement device, which represents one of development directions of calorimeters, is introduced. Moreover, the in- and out-pile calibration principles and application methods are described. The advantages and disadvantages of the calibration methods are analyzed, and the developing trend and direction for next-generation in-pile calorimeters are prospected.
