Results from the TARC experiment: spallation neutron phenomenology in lead and neutron-driven nuclear transmutation by adiabatic resonance crossing

Autor: F. Casagrande, V. Vlachoudis, P. Kokkas, S. Andriamonje, E. Savvidis, J. Bueno, M. Perlado, Pantelis Karaiskos, Konstantin Zioutas, M. Embid, P. Cennini, C. Geles, E. González, D. Trubert, E. Perez-Enciso, A. Angelopoulos, S. Buono, George Kitis, P. Pavlopoulos, J. Aleixandre, I. Papadopoulos, J.M. Loiseaux, C. Sirvent, V. Lacoste, J.B. Viano, J. I. Collar, J. Galvez, J. Tamarit, F. Schussler, J. Oropesa, J. P. Revol, J. A. Rubio, A. Pérez-Navarro, E. Belle, M. Poza, C. Eleftheriadis, J. Garcia, A. Apostolakis, M. Hussonnois, A. Placci, D. Heuer, Loukas Sakelliou, C. López, O. Méplan, A. Giorni, S. Dı́ez, H. Nifenecker, C. A. Bompas, F. Saldana, C. Rubbia, C. Le Naour, Alberto Abánades, H. Arnould, R. Del Moral, I. Goulas, S. Vieira, R. Klapisch, José M. Martínez-Val, E. Cerro, A. Tzima, L. Dumps, Y. Kadi, R. Fernandez, D. Brozzi, O. González, Federico Carminati
Přispěvatelé: Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), TARC
Rok vydání: 2002
Předmět:
Zdroj: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2002, 478, pp.577-730. ⟨10.1016/S0168-9002(01)00789-6⟩
ISSN: 0168-9002
DOI: 10.1016/s0168-9002(01)00789-6
Popis: We summarize here the results of the TARC experiment whose main purpose is to demonstrate the possibility of using Adiabatic Resonance Crossing (ARC) to destroy efficiently Long-Lived Fission Fragments (LLFFs) in accelerator-driven systems and to validate a new simulation developed in the framework of the Energy Amplifier programme. An experimental set-up was installed in a CERN PS proton beam line to study how neutrons produced by spallation at relatively high energy ( E n ⩾1 MeV ) slow down quasi-adiabatically with almost flat isolethargic energy distribution and reach the capture resonance energy of an element to be transmuted where they will have a high probability of being captured. Precision measurements of energy and space distributions of spallation neutrons (using 2.5 and 3.5 GeV/c protons) slowing down in a 3.3 m×3.3 m×3 m lead volume and of neutron capture rates on LLFFs 99Tc, 129I, and several other elements were performed. An appropriate formalism and appropriate computational tools necessary for the analysis and understanding of the data were developed and validated in detail. Our direct experimental observation of ARC demonstrates the possibility to destroy, in a parasitic mode, outside the Energy Amplifier core, large amounts of 99Tc or 129I at a rate exceeding the production rate, thereby making it practical to reduce correspondingly the existing stockpile of LLFFs. In addition, TARC opens up new possibilities for radioactive isotope production as an alternative to nuclear reactors, in particular for medical applications, as well as new possibilities for neutron research and industrial applications.
Databáze: OpenAIRE
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