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Park, Sang-Tae

doi:10.1023/a:1023333016692

Cited by 21 publications

(6 citation statements)

References 9 publications

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“…To evaluate the possible degradation of the PSD due to multiple reflexion on the inside vessel, we measured the PSD properties of the LAB in a cell, as previously with a 252 Cf source, and in Nucifer using the Am-Be source. Both of these sources emit neutrons with energies ranging between 1 and 10 MeV [18]. We obtained similar values of F.o.M∼0.5.…”

Section: B Detector Calibration Testssupporting

confidence: 74%

Nucifer: A small electron-antineutrino detector for fundamental and safeguard studies

Letourneau

Bui

Cribier

et al. 2011

2011 2nd International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and Their Applications

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The Nucifer detector will be deployed in the next few months at the Osiris research reactor in France. Nucifer is a 1-ton Gd-doped liquid scintillator detector devoted to reactor antineutrino studies. It will be installed 7 m away from the compact core of the Osiris reactor. The design of such small volume detector has been focused on high detection efficiency and good background rejection. Over the last decades, our understanding of the neutrino properties has been improved and allows today the possibility to apply the detection of antineutrinos to automatic and to non intrusively survey nuclear power plant. This has triggered the interest of the International Atomic Energy Agency (IAEA), which is interested by developing new safeguard techniques for next generation reactors. The sensitivity of such technique has to be proved and demonstrated. On the other hand there is still some issues in our understanding of the neutrino properties as the observed deficit in the antineutrino rate at short distances (< 100 m) that can not be explained by oscillations in the 3-flavors neutrino model. If a global systematic error is rejected, such anomaly opens the door to new physic that can be assessed with small detectors placed close to the core. Here we review the Nucifer detector in this context and the tests we are performing.

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Section: B Detector Calibration Testssupporting

confidence: 74%

Nucifer: A small electron-antineutrino detector for fundamental and safeguard studies

Letourneau

Bui

Cribier

et al. 2011

2011 2nd International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and Their Applications

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“…Figure 7 displays the unfolded energy spectrum of the 241 Am-9 Be neutron source using developed computational code based on SVM method. As shown, there is a good agreement between the unfolded energy spectrum using SVM and ISO ones [12]. The evidence of this claim is the table 1, where the FVU values of SVM, ANFIS and ANN algorithms in reconstruction of neutron energy spectrum are compared.…”

Section: Resultsmentioning

confidence: 62%

“…To validate the performed simulation using MCNPX-ESUT computational code, the neutron pulse height distributions due to 241 Am- 9 Be source in an organic liquid scintillator NE-213 (5.08 cm, in height and 5.08 cm in diameter) are simulated. The energy spectrum displayed in figure 2 [12] is used for definition of neutron sources in MCNPX-ESUT computational code.…”

Section: Simulation Proceduresmentioning

confidence: 99%

Neutron spectroscopy with soft computing: development of a computational code based on Support Vector Machine (SVM) for reconstruction of neutron energy spectrum

Hosseini

2019

J. Inst.

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This paper presents a developed computational code based on Support Vector Machine (SVM) for reconstruction of energy spectrum of neutron source. To reconstruct unknown energy spectrum using known neutron pulse height distribution, the developed machine is trained by known neutron pulse height distribution of detector and corresponding energy spectrum of neutron source. Validation and testing are the next steps to verify the validity of the calculations done with the developed computational code. The calculated neutron pulse height distributions due to randomly generated energy spectrum using MCNPX-ESUT (MCNPX-Energy engineering of Sharif University of Technology) computational code are used as input data of the developed computational code for reconstruction of energy spectrum of neutron source. The considered energy spectrums of neutron source are output data. In the present study, the simulation of neutron pulse height distribution of 241 Am-9 Be neutron source in the NE-213 liquid organic scintillator is performed using MCNPX-ESUT computational code. In the constructed matrix form of Fredholm integral equation, the effective response matrix is usually close to singular or badly scaled and its condition number is so high. The solution of inverse problem in which the matrix has high condition number does not give accurate results. The motivation of the present study is the development of computational coded based on soft computing algorithm for reconstruction of energy spectrum of the neutron source with high accuracy. To this end, the computational code based on Support Vector Machine (SVM) is developed, where there is no need to solve the inverse problems. The unfolded energy spectra of 241 Am-9 Be neutron sources using the developed computational code have an excellent agreement with the reference spectrum provided by ISO. A comparison between the results of present study and results of developed computational code based on Artificial Neural Network (ANN) and Adaptive Neuro-Fuzzy Inference System (ANFIS) is performed. K: Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc); Interaction of radiation with matter; Radiation calculations

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“…Figure 7 displays the unfolded energy spectrum of the 241 Am-9 Be neutron source using the developed computer code based on AGIDS method. As shown, there is a good agreement between the unfolded energy spectrum using the AGIDS and ISO ones [15]. The evidence of this claim is table 1, where the FVU values between the unfolded energy spectra and ISO ones is presented.…”

Section: Jinst 14 P03028mentioning

confidence: 56%

“…To validate the performed simulation using the MCNPX-ESUT computer code, the neutron pulse height distributions due to the 241 Am- 9 Be source in an organic liquid scintillator NE-213 (5.08 cm, in height and 5.08 cm in diameter) are simulated. The energy spectrum displayed in figure 1 [3,15] is used for the definition of the neutron source in the MCNPX-ESUT computer code.…”

Section: Simulation Of the Neutron Pulse Height Simulation Using The ...mentioning

confidence: 99%

Neutron spectroscopy with soft computing: unfolding of the neutron energy spectrum using the developed computer code based on Adaptive Group of Ink Drop Spread (AGIDS)

Hosseini

2019

J. Inst.

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This paper presents the developed computer codes based on the Adaptive Group of Ink Drop Spread (AGIDS) algorithm [1] for the reconstruction of the energy spectrum of the neutron source. The required data are generated via simulation of the neutron pulse height distributions due to randomly generated energy spectra with the MCNPX-ESUT computer code [2]. The simulated neutron pulse height distributions and corresponding randomly generated energy spectra are the input and output data of the developed computer code, respectively. As a case study, the 241Am-9Be neutron source is studied and the simulation of the neutron pulse height distribution of the NE-213 liquid organic scintillator is performed using the MCNPX-ESUT computer code. It is shown that the reconstructed energy spectrum of the 241Am-9Be neutron source has an excellent agreement with the reference spectrum provided by the International Standard Organization for neutron spectroscopy (ISO) [3].

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Untitled

Cited by 21 publications

References 9 publications

Nucifer: A small electron-antineutrino detector for fundamental and safeguard studies

Nucifer: A small electron-antineutrino detector for fundamental and safeguard studies

Neutron spectroscopy with soft computing: development of a computational code based on Support Vector Machine (SVM) for reconstruction of neutron energy spectrum

Neutron spectroscopy with soft computing: unfolding of the neutron energy spectrum using the developed computer code based on Adaptive Group of Ink Drop Spread (AGIDS)

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