Preliminary results on the 233U capture cross section and alpha ratio measured at n_TOF (CERN) with the fission tagging technique

M. Bacak; M. Aiche; G. Bélier; E. Berthoumieux; M. Diakaki; E. Dupont; F. Gunsing; J. Heyse; S. Kopecky; B. Laurent; H. Leeb; L. Mathieu; P. Schillebeeckx; O. Serot; J. Taieb; V. Vlachoudis; O. Aberle; J. Andrzejewski; L. Audouin; J. Balibrea; M. Barbagallo; F. Bečvář; J. Billowes; D. Bosnar; A. Brown; M. Caamaño; F. Calviño; M. Calviani; D. Cano-Ott; R. Cardella; A. Casanovas; F. Cerutti; Y. H. Chen; E. Chiaveri; N. Colonna; G. Cortés; M. A. Cortés-Giraldo; L. Cosentino; L. A. Damone; C. Domingo-Pardo; R. Dressler; I. Durán; B. Fernández-Domínguez; A. Ferrari; P. Ferreira; P. Finocchiaro; V. Furman; K. Göbel; A. R. García; A. Gawlik; S. Gilardoni; T. Glodariu; I. F. Gonçalves; E. González-Romero; E. Griesmayer; C. Guerrero; H. Harada; S. Heinitz; D. G. Jenkins; E. Jericha; F. Käppeler; Y. Kadi; A. Kalamara; P. Kavrigin; A. Kimura; N. Kivel; I. Knapova; M. Kokkoris; M. Krtička; D. Kurtulgil; E. Leal-Cidoncha; C. Lederer; J. Lerendegui-Marco; S. Lo Meo; S. J. Lonsdale; D. Macina; A. Manna; J. Marganiec; T. Martínez; A. Masi; C. Massimi; P. Mastinu; M. Mastromarco; E. A. Maugeri; A. Mazzone; E. Mendoza; A. Mengoni; P. M. Milazzo; F. Mingrone; A. Musumarra; A. Negret; R. Nolte; A. Oprea; N. Patronis; A. Pavlik; J. Perkowski; I. Porras; J. Praena; J. M. Quesada; D. Radeck; T. Rauscher; R. Reifarth; C. Rubbia; J. A. Ryan; M. Sabaté-Gilarte; A. Saxena; D. Schumann; P. Sedyshev; A. G. Smith; N. V. Sosnin; A. Stamatopoulos; G. Tagliente; J. L. Tain; A. Tarifeño-Saldivia; L. Tassan-Got; S. Valenta; G. Vannini; V. Variale; P. Vaz; A. Ventura; R. Vlastou; A. Wallner; S. Warren; C. Weiss; P. J. Woods; T. Wright; P. Žugec

doi:10.1051/epjconf/201921103007

All issues

Volume 211 (2019)

EPJ Web Conf., 211 (2019) 03007

Abstract

Open Access

Issue		EPJ Web Conf. Volume 211, 2019 WONDER-2018 – 5^th International Workshop On Nuclear Data Evaluation for Reactor applications


Article Number		03007
Number of page(s)		9
Section		Microscopic and Integral Measurements
DOI		https://doi.org/10.1051/epjconf/201921103007
Published online		05 June 2019

EPJ Web of Conferences 211, 03007 (2019)
https://doi.org/10.1051/epjconf/201921103007

Preliminary results on the ²³³U capture cross section and alpha ratio measured at n_TOF (CERN) with the fission tagging technique

M. Bacak¹^,2^,3^*, M. Aiche⁴, G. Bélier⁵, E. Berthoumieux³, M. Diakaki³, E. Dupont³, F. Gunsing³^,1, J. Heyse⁶, S. Kopecky⁶, B. Laurent⁵, H. Leeb², L. Mathieu⁴, P. Schillebeeckx⁶, O. Serot⁷, J. Taieb⁵, V. Vlachoudis¹, O. Aberle¹, J. Andrzejewski⁸, L. Audouin⁹, J. Balibrea¹⁰, M. Barbagallo¹¹, F. Bečvář¹², J. Billowes¹³, D. Bosnar¹⁴, A. Brown¹⁵, M. Caamaño¹⁶, F. Calviño¹⁷, M. Calviani¹, D. Cano-Ott¹⁰, R. Cardella¹, A. Casanovas¹⁷, F. Cerutti¹, Y. H. Chen⁹, E. Chiaveri¹^,13^,18, N. Colonna¹¹, G. Cortés¹⁷, M. A. Cortés-Giraldo¹⁸, L. Cosentino¹⁹, L. A. Damone¹¹^,20, C. Domingo-Pardo²¹, R. Dressler²², I. Durán¹⁶, B. Fernández-Domínguez¹⁶, A. Ferrari¹, P. Ferreira²³, P. Finocchiaro¹⁹, V. Furman²⁴, K. Göbel²⁵, A. R. García¹⁰, A. Gawlik⁸, S. Gilardoni¹, T. Glodariu (†)²⁶, I. F. Gonçalves²³, E. González-Romero¹⁰, E. Griesmayer², C. Guerrero¹⁸, H. Harada²⁷, S. Heinitz²², D. G. Jenkins¹⁵, E. Jericha², F. Käppeler²⁸, Y. Kadi¹, A. Kalamara²⁹, P. Kavrigin², A. Kimura²⁷, N. Kivel²², I. Knapova¹², M. Kokkoris²⁹, M. Krtička¹², D. Kurtulgil²⁵, E. Leal-Cidoncha¹⁶, C. Lederer³⁰, J. Lerendegui-Marco¹⁸, S. Lo Meo³¹^,32, S. J. Lonsdale³⁰, D. Macina¹, A. Manna³²^,33, J. Marganiec⁸^,34, T. Martínez¹⁰, A. Masi¹, C. Massimi³²^,33, P. Mastinu³⁵, M. Mastromarco¹¹, E. A. Maugeri²², A. Mazzone¹¹^,36, E. Mendoza¹⁰, A. Mengoni³¹, P. M. Milazzo³⁷, F. Mingrone¹, A. Musumarra¹⁹^,38, A. Negret²⁶, R. Nolte³⁴, A. Oprea²⁶, N. Patronis³⁹, A. Pavlik⁴⁰, J. Perkowski⁸, I. Porras⁴¹, J. Praena⁴¹, J. M. Quesada¹⁸, D. Radeck³⁴, T. Rauscher⁴²^,43, R. Reifarth²⁵, C. Rubbia¹, J. A. Ryan¹³, M. Sabaté-Gilarte¹^,18, A. Saxena⁴⁴, D. Schumann²², P. Sedyshev²⁴, A. G. Smith¹³, N. V. Sosnin¹³, A. Stamatopoulos²⁹, G. Tagliente¹¹, J. L. Tain²¹, A. Tarifeño-Saldivia¹⁷, L. Tassan-Got⁹, S. Valenta¹², G. Vannini³²^,33, V. Variale¹¹, P. Vaz²³, A. Ventura³², R. Vlastou²⁹, A. Wallner⁴⁵, S. Warren¹³, C. Weiss², P. J. Woods³⁰, T. Wright¹³ and P. Žugec¹⁴^,1

¹ European Organization for Nuclear Research (CERN), Switzerland
² Technische Universität Wien, Austria
³ CEA Irfu, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
⁴ CENBG, CNRS/IN2P3-Université de Bordeaux, Gradignan, France
⁵ CEA, DAM, DIF, F-91297 Arpajon, France
⁶ European Commission, Joint Research Centre, Geel, Retieseweg 111, B-2440 Geel, Belgium
⁷ CEA, DEN, Cadarache, France
⁸ University of Lodz, Poland
⁹ Institut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-Saclay, F-91406 Orsay Cedex, France
¹⁰ Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Spain
¹¹ Istituto Nazionale di Fisica Nucleare, Sezione di Bari, Italy
¹² Charles University, Prague, Czech Republic
¹³ University of Manchester, United Kingdom
¹⁴ Department of Physics, Faculty of Science, University of Zagreb, Zagreb, Croatia
¹⁵ University of York, United Kingdom
¹⁶ University of Santiago de Compostela, Spain
¹⁷ Universitat Politècnica de Catalunya, Spain
¹⁸ Universidad de Sevilla, Spain
¹⁹ INFN Laboratori Nazionali del Sud, Catania, Italy
²⁰ Dipartimento di Fisica, Università degli Studi di Bari, Italy
²¹ Instituto de Física Corpuscular, CSIC - Universidad de Valencia, Spain
²² Paul Scherrer Institut (PSI), Villingen, Switzerland
²³ Instituto Superior Técnico, Lisbon, Portugal
²⁴ Joint Institute for Nuclear Research (JINR), Dubna, Russia
²⁵ Goethe University Frankfurt, Germany
²⁶ Horia Hulubei National Institute of Physics and Nuclear Engineering, Romania
²⁷ Japan Atomic Energy Agency (JAEA), Tokai-mura, Japan
²⁸ Karlsruhe Institute of Technology, Campus North, IKP, 76021 Karlsruhe, Germany
²⁹ National Technical University of Athens, Greece
³⁰ School of Physics and Astronomy, University of Edinburgh, United Kingdom
³¹ Agenzia nazionale per le nuove tecnologie (ENEA), Bologna, Italy
³² Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, Italy
³³ Dipartimento di Fisica e Astronomia, Università di Bologna, Italy
³⁴ Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany
³⁵ Istituto Nazionale di Fisica Nucleare, Sezione di Legnaro, Italy
³⁶ Consiglio Nazionale delle Ricerche, Bari, Italy
³⁷ Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, Italy
³⁸ Dipartimento di Fisica e Astronomia, Università di Catania, Italy
³⁹ University of Ioannina, Greece
⁴⁰ University of Vienna, Faculty of Physics, Vienna, Austria
⁴¹ University of Granada, Spain
⁴² Department of Physics, University of Basel, Switzerland
⁴³ Centre for Astrophysics Research, University of Hertfordshire, United Kingdom
⁴⁴ Bhabha Atomic Research Centre (BARC), India
⁴⁵ Australian National University, Canberra, Australia

^* corresponding author: michael.bacak@cern.ch

Published online: 5 June 2019

Abstract

²³³U is of key importance among the fissile nuclei in the Th-U fuel cycle. A particularity of ²³³U is its small neutron capture cross-section, which is on average about one order of magnitude lower than the fission cross-section. The accuracy in the measurement of the ²³³U capture cross-section depends crucially on an efficient capture-fission discrimination, thus a combined set-up of fission and γ-detectors is needed. A measurement of the ²³³U capture cross-section and capture-to-fission ratio was performed at the CERN n_TOF facility. The Total Absorption Calorimeter (TAC) of n_TOF was employed as γ-detector coupled with a novel compact ionization chamber as fission detector. A brief description of the experimental set-up will be given, and essential parts of the analysis procedure as well as the preliminary response of the set-up to capture are presented and discussed.

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