Results 161 to 170 of about 5,353,294 (221)

Numerical optimization of Rhodium Self-Powered Neutron Detector

Annals of Nuclear Energy, 2018
Abstract Self-Powered Neutron Detector (SPND) has been widely used in reactors to monitor neutron flux due to its adaptability for in-core severe environment. As a typical representative, SPND with Rhodium as its emitter has been modeled in the frame of Geant4, which is good at tracing the history of the particles in simulation and very appropriate ...
Qingmin Zhang, Liangzhi Cao, Bangjie Deng   +2 more
exaly   +2 more sources

Analysis of vanadium Self Powered Neutron Detector’s signal

Annals of Nuclear Energy, 2013
Abstract Self Powered Neutron Detectors (SPNDs) have been widely used for monitoring the neutron flux, either in Nuclear Power Plants (NPPs) as well as in irradiation facilities and medical treatments. Nevertheless, the physical meaning of the parameter used to relate the detector signal (an electric current) to the neutron flux, i.e. , the detector
O. Moreira, H. Lescano
exaly   +2 more sources

Deconvolution-based real-time neutron flux reconstruction for Self-Powered Neutron Detector

Nuclear Engineering and Design, 2018
Abstract Self-Powered Neutron Detector (SPND) is useful for in-core neutron flux measurement in nuclear reactors due to its tiny size, simple structure, ruggedness and self-powered feature. One type of SPNDs with delayed current from instable intermediate nuclides cannot directly represent the real-time in-core neutron flux Φ(t) by their current I(t),
Qingmin Zhang, Bangjie Deng, Yaodong Sang   +2 more
exaly   +2 more sources

Calibration of Self-Powered Neutron Detectors

Nuclear Science and Engineering, 1983
The thermal neutron sensitivities of 231Rh self-powered neutron detectors were measured in a 1-MW(thermal) pool-type reactor.
M. F. Sulcoski, H. D. Warren
openaire   +1 more source

Layout Optimization of Self-Powered Neutron Detector for HPR1000

Volume 15: Student Paper Competition, 2022
Abstract Self-Powered Neutron Detector (SPND) has been widely applied for the on-line monitoring of the key core parameters, including the power distribution, power-peak factor and so on. For the SPND layout design, the vital parameters include the SPND amount and loading position in the radial direction and segment amount in the axial ...
Yao Zhou, Liangzhi Cao, Changyou Zhao, Zhifeng Li, Yuxiang Zhu   +4 more
openaire   +1 more source

Neutron sensitivity of vanadium self powered neutron detectors

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1986
Abstract The neutron sensitivity of vanadium self powered neutron detectors (Type 5503-B), manufactured by Studsvik, Sweden, has been measured. Using the calculational model developed by Warren, the neutron sensitivity of these detectors has been computed taking into account additional factors viz.
P.S. Rao, S.C. Misra
openaire   +1 more source

A study on the sensitivity of self-powered neutron detectors (SPNDs)

IEEE Transactions on Nuclear Science, 2001
Self-powered neutron detectors (SPNDs) are widely used in reactors to monitor neutron flux, while they have several advantages such as small size, and relatively simple electronics required in conjunction with those usages, they have some intrinsic problems of the low level of output current-a slow response time and the rapid change of sensitivity-that
null Wanno Lee, null Gyunseong Cho, null Kwanghyun Kim, null Hee Joon Kim, null Yuseon Choi, null Moon Kyu Park, null Soongpyung Kim   +6 more
openaire   +1 more source

Transient response of self-powered neutron detectors

Nuclear Instruments and Methods, 1975
Abstract The behaviour of self-powered neutron detectors with Co, Er, Hf and Pt emitters was investigated during reactor square wave and pulse operation. The detector's response was compared with the current of an excore ionization chamber. Characteristical deviations from linearity were observed with all detectors at fast reactor periods.
H. Böck, P. Gebureck, D. Stegemann
openaire   +1 more source

VVER Thermal Power Measured Using the Readings of Rhodium Self-powered Neutron Detector (SPND)

Physics of Atomic Nuclei, 2020
A procedure for determining the linear heat generation rate in a fuel assembly of VVER reactor at the location of a rhodium self-powered neutron detector (SPND) and verification of this procedure are discussed.
Mil'to, N V, Skorohodov, D N, Khvatov, V A, Kurchenkov, A Yu, Lipin, N V, Vorob'eva, D V, Kovel, A I, Chapaev, V M, Mil'to, V A   +8 more
exaly   +2 more sources

Dynamic Compensation of Rhodium Self Powered Neutron Detectors

IEEE Transactions on Nuclear Science, 1976
A mathematical model of a rhodium self-powered neutron detector has been developed to investigate the detector transfer function and to apply this transfer function as compensation for the inherent time delay in the rhodium-neutron interaction. The various reactions that comprise the detector signal have been evaluated experimentally and the resultant ...
L. A. Banda, B. I. Nappi
openaire   +1 more source