Implementation of an analytical model accounting for sample inhomogeneities in REFIT K. Kauwenberghs EC – JRC – IRMM Standards for Nuclear Safety, Security.

Slides:



Advertisements
Similar presentations
NE Introduction to Nuclear Science Spring 2012
Advertisements

PIGE experience in IPPE Institute of Physics and Power Engineering, Obninsk, Russia A.F. Gurbich.
Induced Activity Calculations in Support of D&D Activities at SLAC Joachim Vollaire, Radiation Protection Department.
Study of two pion channel from photoproduction on the deuteron Lewis Graham Proposal Phys 745 Class May 6, 2009.
Design on Target and Moderator of X- band Compact Electron Linac Neutron Source for Short Pulsed Neutrons Kazuhiro Tagi.
RF background, analysis of MTA data & implications for MICE Rikard Sandström, Geneva University MICE Collaboration Meeting – Analysis session, October.
Precise neutron inelastic cross section measurements A.Negret 1 1 “Horia Hulubei” National Institute for Physics and Nuclear Engineering, Bucharest, ROMANIA.
Measurements of cross-sections of neutron threshold reactions and their usage in high energy neutron measurements Ondřej Svoboda Nuclear Physics Institute,
Multiplicity and Energy of Neutrons from 233U(nth,f) Fission Fragments
Nuclear Level Densities of Residual Nuclei from evaporation of 64 Cu Moses B. Oginni Ohio University SNP2008 July 9, 2008.
1 JASMIN Activation Experiments (T-972/993/994) Yoshimi Kasugai on behalf of JASMIN Activation team JASMIN Activation team Y. Kasugai, K. Oishi, H. Matsumura,
Applications of neutron spectrometry Neutron sources: 1) Reactors 2) Usage of reactions 3) Spallation sources Neutron show: 1) Where atoms are (structure)
TOTAL CROSS-SECTION MEASUREMENTS AND RESONANCE PARAMETER ANNYLISIS OF 169 TM BELOW 100 EV ICTP, Trieste, Italy 2010/05/14 Presentation in the Workshop.
A scintillation detector for neutrons below 1 MeV with gamma-ray rejection Scintillators are 3 mm BC408, 10 layers total Adjacent layers are optically.
P10-2: Exclusive Study on the  N Weak Interaction in A=4  -Hypernuclei (update from P10) S. Ajimura (Osaka Univ.) Osaka-U, KEK, OsakaEC-U, RIKEN, Seoul-U,
1 Low Neutron Energy Cross Sections of the Hafnium Isotopes G. Noguère, A. Courcelle, J.M. Palau, O. Litaize CEA/DEN Cadarache, France P. Siegler JRC/IRMM.
Measurement of Neutron Total Cross Sections of Natural Hafnium and Tantalum at Pohang Neutron Facility Course Title: Experimental Method and Data Process.
Experimental studies of spatial distribution of neutron production around thick lead target irradiated by 0.9 GeV protons Antonín Krása&Vladimír Wagner.
Neutron inelastic scattering measurements at the GELINA facility of EC-JRC-IRMM A. Negret 1, C. Borcea 1, A. Plompen 2 1 NIPNE-HH, Romania 2 EC-JRC-IRMM,
1,2 Tshepo Dinoko, 3 Vasilij Andrianov, 3 Pavel Sedyshev 1 iThemba LABS, Somerset West 7129, South Africa 2 University of the Western Cape, Bellville 7535,
Measurements of the (n,xn) reactions cross sections using new digital methods. Habib Karam Group GRACE.
Status on 25 Mg(n,  ) and neutron flux in 2012 Bologna, 27 November 2013 C. Massimi.
Bragg edge transmission analysis at a medium intensity pulsed neutron source Javier R. Santisteban- J. Rolando Granada Laboratorio de Física de Neutrones.
Prepared By: A.K.M. Moinul Haque Meaze * Center for High Energy Physics, Kyungpook National University Daegu , Korea Course Title : Phenomenology.
Systematic studies of neutrons produced in the Pb/U assembly irradiated by relativistic protons and deuterons. Vladimír Wagner Nuclear physics institute.
Gamma-induced positron lifetime and age-momentum
Workshop on Nuclear Reaction Data for Advanced Reactor Technologies – Trieste, 19 – 30 May, 2008, P. Schillebeeckx1 Joint.
Cross-sections of Neutron Threshold Reactions Studied by Activation Method Nuclear Physics Institute, Academy of Sciences of Czech Republic Department.
Passive detectors (nuclear track detectors) – part 2: Applications for neutrons This research project has been supported by the Marie Curie Initial Training.
Accelerator Physics, JU, First Semester, (Saed Dababneh). 1 Electron pick-up. ~1/E What about fission fragments????? Bragg curve stochastic energy.
Generalized Dalitz Plot analysis of the near threshold pp → ppK + K - reaction in view of the K + K - interaction Excited QCD, Stara Lesna, 4th February.
Applications of Monte Carlo Code for a Gamma Resonance System Analysis L. Wielopolski, A. Hanson, I. Dioszegi, M. Todosow, Brookhaven National Laboratory,
Experimental Nuclear Physics Some Recent Activities 1.Development of a detector for low-energy neutrons a. Hardware -- A Novel Design Idea b. Measure the.
A CHALLENGE FOR SUSTAINABLE, CLEAN ENERGY C.Borcea
Experimental Studies of Spatial Distributions of Neutrons Produced by Set-ups with Thick Lead Target Irradiated by Relativistic Protons Vladimír Wagner.
Neutron inelastic cross section measurement on 28 Si Alexandru Negret Horia Hulubei National Institute for Physics and Nuclear Engineering, Bucharest,
Ondřej Svoboda Nuclear Physics Institute, Academy of Sciences of Czech Republic Department of Nuclear Reactors, Faculty of Nuclear Sciences and Physical.
Fission cross sections and the dynamics of the fission process F. -J
Neutron Capture Cross Sections from 1 MeV to 2 MeV by Activation Measurements Korea Institutes of Geoscience and Mineral Resource G.D.Kim, T.K.Yang, Y.S.Kim,
Nuclear Astrophysics ARUNA Workshop, Notre Dame, IN Carl R. Brune Ohio University, Athens Ohio June 12-13, 2014.
Institute for Reference Materials and Measurements (IRMM) Geel, Belgium CRP Th - U, Vienna December 2004.
CERF simulation Mitsu 14th Feb Simulation components Production Transportation Detector response
Neutron measurement with nuclear emulsion Mitsu KIMURA 27th Feb 2013.
LOMONOSOV MOSCOW STATE UNIVERSITY, SKOBELTSYN INSTITUTE OF NUCLEAR PHYSICS Multi-particle photodisintegration of heavy nuclei A.N. Ermakov, B.S. Ishkhanov,
Neutron production in Pb/U assembly irradiated by deuterons at 1.6 and 2.52 GeV Ondřej Svoboda Nuclear Physics Institute, Academy of Sciences of Czech.
Plan for future GaAs samples for TestBeam measurements JINR DLNP group (presented Z. Krumshteyn) JINR DLNP group (presented Z. Krumshteyn) FCAL Collaboration.
Radiation Shielding Assessment for MuCool Experimental Enclosure C. Johnstone 1), I. Rakhno 2) 1) Fermi National Accelerator Laboratory, Batavia, Illinois.
Summer Student Practice, 2009, JINR Dubna1 Neutron spectroscopy by time of flight method and determination of neutron beam Prepared by: Sameh Hassan, Yomna.
Development of Cryogenic Moderators Using a Small Proton Accelerator Yoshiaki Kiyanagi*, Fujio Hiraga, Takashi Kamiyama, Akira Homma, Fumiyuki Fujita and.
Three years of cross-section measurements of (n,xn) threshold reactions at TSL Uppsala and NPI Řež O. Svoboda, A. Krása, A. Kugler, M. Majerle, J. Vrzalová,
12 C fragmentation measurements for hadrontherapy applications Introduction Status French program Japanese-French collaboration.
High accuracy neutron inelastic cross section measurements on 206 Pb A.Negret 1, L.C. Mihailescu 1,2, C. Borcea 1, Ph. Dessagne 3, K.H. Guber 4, M. Kerveno.
Monte Carlo methods in spallation experiments Defense of the phD thesis Mitja Majerle “Phasotron” and “Energy Plus Transmutation” setups (schematic drawings)
February 6, 2014 CLIC Workshop Switzerland
The nucleosynthesis of heavy elements in Stars: the key isotope 25Mg
Inter-comparison of Particle production (2)
Cross-section Measurements of (n,xn) Threshold Reactions
AMSTRAMGRAM AMélioration de la Section Thermique de capture l’Américium 241 par Mesure intéGRAle dans MINERVE P. Leconte CEA (SPRC/LEPh) A. Gruel, B.
Shintaro Hashimoto1, Yosuke Iwamoto 1, Tatsuhiko Sato 1, Koji Niita2,
Neutron time-of-flight measurements at GELINA
for collaboration “Energy plus transmutation”
Measurements of the 238U radiative capture cross section using C6D6
Bucharest-Magurele, Romania M. BOROMIZA - Trieste, October, 2017
EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH
1. Introduction Secondary Heavy charged particle (fragment) production
LAHET code simulations in comparison with bare Pb spallation target experiment Daniela Henzlova.
O. Svoboda, A. Krása, A. Kugler, M. Majerle, J. Vrzalová, V. Wagner
Neutron Detector Simulations for Fast Neutrons with GEANT4
Development of Active Neutron Non-Destructive Assay (NDA) Techniques
Pohang Neutron Facility (First Presentation of Prof. Cho’s Class)
Presentation transcript:

Implementation of an analytical model accounting for sample inhomogeneities in REFIT K. Kauwenberghs EC – JRC – IRMM Standards for Nuclear Safety, Security and Safeguards (SN3S)

 Introduction (EC - JRC- IRMM)  Neutron Resonance Transmission and Capture Analysis  Motivation  Initial model validation  Experimental model validation  Summary Outline

JRC-IRMM major provider in Europe of ND for nuclear energy applications GELINA VdG EC - JRC – IRMM neutron facilities

GELINAVan de Graaff White neutron source + Time-of-flight (TOF) 99 Tc(n,  ) cross section Mono-energetic neutrons (cp,n) reactions EC - JRC – IRMM neutron facilities

 Pulsed white neutron source (10 meV < E n < 20 MeV)  High resolution TOF measurements  Multi-user facility: 10 flight paths  Flight path lengths: 10 m – 400m  Measurement stations with special equipment to perform: Total cross section measurements Partial cross section measurements FLIGHT PATHS SOUTH FLIGHT PATHS NORD ELECTRON LINAC TARGET HALL Mondelaers and Schillebeeckx, Notizario 11 (2006) 19 EC - JRC – IRMM GELINA

 e - accelerated to E e-,max ≈ 140 MeV  Bremsstrahlung in U-target (rotating & cooled with liquid Hg)  ( , n), ( , f ) in U-target  Low energy neutrons by moderation (water moderator in Be-canning) EC - JRC – IRMM GELINA

Neutron Resonance Transmission and Capture Analysis Capture Transmission T : transmission Fraction of the neutron beam traversing the sample without any interaction Y  : capture yield Fraction of the neutron beam creating a (n,  ) reaction in the sample

Capture Transmission Schillebeeckx et al., Nuclear Data Sheets 113 (2012) Neutron Resonance Transmission and Capture Analysis

Capture Transmission Schillebeeckx et al., Nuclear Data Sheets 113 (2012) Neutron Resonance Transmission and Capture Analysis

Sample out Sample in Schillebeeckx et al., Nuclear Data Sheets 113 (2012) Neutron Resonance Transmission and Capture Analysis

Motivation good geometry + homogeneous sample R(t m,E) response of TOF-spectrometer REFIT, M. Moxon 241 Am Schillebeeckx et al., Nuclear Data Sheets 113 (2012)

Ignoring sample inhomogeneities: Underestimation of  peak Overestimation of   Motivation heterogeneous sample

Transmission + Capture data sample properties resonance parameters Motivation good geometry + homogeneous sample

Expected transmission Homogeneous sample: Heterogeneous sample: p(n') : distribution of areal density 1cm From H. Uetsuka, et al., “Gamma Spectrometry of TMI-2 Debris” (written in Japanese), JAERI-Research Motivation heterogeneous sample

 Analytical models to account for inhomogeneities of a powder sample: Kopecky et al. (ND2007) LP Model (Levermore, Pomraning et al., J. Math. Phys. 27, 2526, 1986) …  Comparison with transmission spectra produced by stochastic calculations (MC simulations)  LP model performs the best 35 th ESARDA 2013 Becker et al., "Particle size inhomogeneity effect on NRD" Initial model validation

35 th ESARDA 2013 Becker et al., "Particle size inhomogeneity effect on NRD" Initial model validation  Kopecky et al.: Macroscopic model to describe the variation of the thickness Kopecky et al., ND2007, Nice, pp. 623 – 626; Schillebeeckx et al., NDS 113 (2012)  LP Model: Microscopic model Levermore, Pomraning et al., J. Math. Phys. 27, 2526, 1986

 Experimental validation of the model = based on capture and transmission measurements at GELINA: Cu powder samples with known grain size distribution W powder samples with known grain size distribution 35 th ESARDA 2013 Becker et al., "Particle size inhomogeneity effect on NRD" Experimental model validation

54 th INMM 2013 Schillebeeckx et al., "Contribution of the JRC to the development of NRD" nat W-metal disc (80 cm diameter, 14 g nat W) nat W-powder mixed with nat S-powder (80 cm diameter, 14 g nat W, 3.5 g nat S) Experimental model validation

nat W-metal disc (80 cm diameter, 14 g nat W) 54 th INMM 2013 Schillebeeckx et al., "Contribution of the JRC to the development of NRD" Experimental model validation

nat W-powder mixed with nat S-powder (80 cm diameter, 14 g nat W, 3.5 g nat S) 54 th INMM 2013 Schillebeeckx et al., "Contribution of the JRC to the development of NRD" Experimental model validation

 Model accounting for inhomogeneities of a powder sample is implemented in REFIT  Initial validation of possible models with MC simulations LP Model performs the best  Experimental validation of the model with capture and transmission measurements at GELINA W powder samples with known grain size distribution Summary

Contributors: B. Becker, F. Emiliani, S. Kopecky, P. Schillebeeckx EC – JRC – IRMM, Geel (B) H. Harada F. Kitatani, M. Koizumi, H. Tsuchiya JAEA, Tokai-mura (Japan) Acknowledgement: This work was supported by the European Commission within the Seventh Framework Programme through ERINDA (FP7 – ).