TY - JOUR
T1 - In-Core Neutron Detection System Using a Dual-Mode Self-Reset Preamplifier with the Micro-Pocket Fission Detector
AU - Seung, Minuk
AU - Kim, Duckhyun
AU - Shin, Dongseong
AU - Unruh, Troy C.
AU - Tsai, Kevin
AU - Choi, Woo Young
AU - Kwon, Inyong
N1 - DBLP License: DBLP's bibliographic metadata records provided through http://dblp.org/ are distributed under a Creative Commons CC0 1.0 Universal Public Domain Dedication. Although the bibliographic metadata records are provided consistent with CC0 1.0 Dedication, the content described by the metadata records is not. Content may be subject to copyright, rights of privacy, rights of publicity and other restrictions.
PY - 2023/9/25
Y1 - 2023/9/25
N2 - This article presents the development of an in-core neutron detector readout system utilizing a charge-sensitive amplifier (CSA) with a self-reset technique, alongside data loggers, to measure the output of the CSA. Micro-pocket fission detectors (MPFDs) were developed as in-vessel neutron detectors having many advantages in terms of portability size, reproducibility of charge deposition, usability in high neutron flux, and capability of gamma-ray discrimination. The proposed readout system for MPFDs can be operated in a dual mode which consists of integration and single event modes. The integration mode can count the number of saturated preamplifier outputs in a high-radiation environment. On the other hand, the single-event mode can directly measure the analog data induced by detectors. A novel approach to dead time compensation is also introduced using an active dead time control (ADTC) method. This article shows the reactor transient test results conducted at the transient reactor test (TREAT) reactor. The neutron flux of 7,×, 1015 n/cm2 · s with the full-width half maximum (FWHM) of 126 ms at the reactor power of 2.1 GWth was measured. According to the reactor power of 5.1 GWth, the neutron flux and FWHM were obtained as 1.24,×, 1016 n/cm2 · s and 136 ms, respectively.
AB - This article presents the development of an in-core neutron detector readout system utilizing a charge-sensitive amplifier (CSA) with a self-reset technique, alongside data loggers, to measure the output of the CSA. Micro-pocket fission detectors (MPFDs) were developed as in-vessel neutron detectors having many advantages in terms of portability size, reproducibility of charge deposition, usability in high neutron flux, and capability of gamma-ray discrimination. The proposed readout system for MPFDs can be operated in a dual mode which consists of integration and single event modes. The integration mode can count the number of saturated preamplifier outputs in a high-radiation environment. On the other hand, the single-event mode can directly measure the analog data induced by detectors. A novel approach to dead time compensation is also introduced using an active dead time control (ADTC) method. This article shows the reactor transient test results conducted at the transient reactor test (TREAT) reactor. The neutron flux of 7,×, 1015 n/cm2 · s with the full-width half maximum (FWHM) of 126 ms at the reactor power of 2.1 GWth was measured. According to the reactor power of 5.1 GWth, the neutron flux and FWHM were obtained as 1.24,×, 1016 n/cm2 · s and 136 ms, respectively.
KW - Active dead time control (ADTC)
KW - MPFDs readout system
KW - charge-sensitive amplifier (CSA)
KW - integrated circuit (IC)
KW - micro-pocket fission detectors (MPFDs)
KW - neutron fission detector
KW - reactor instrumentation
KW - self-reset preamplifier
UR - http://www.scopus.com/inward/record.url?scp=85173057651&partnerID=8YFLogxK
U2 - 10.1109/TIM.2023.3318685
DO - 10.1109/TIM.2023.3318685
M3 - Article
AN - SCOPUS:85173057651
SN - 0018-9456
VL - 72
SP - 1
EP - 10
JO - IEEE Transactions on Instrumentation and Measurement
JF - IEEE Transactions on Instrumentation and Measurement
M1 - 2007910
ER -