Preliminary results on the 233U α-ratio measurement at n_TOF

M. Bacak; M. Aïche; G. Bélier; E. Berthoumieux; M. Diakaki; E. Dupont; F. Gunsing; J. Heyse; S. Kopecky; M. Krtička; B. Laurent; H. Leeb; L. Mathieu; P. Schillebeeckx; O. Serot; J. Taieb; S. Valenta; V. Vlachoudis; O. Aberle; J. Andrzejewski; L. Audouin; J. Balibrea; M. Barbagallo; F. Bečvář; J. Billowes; D. Bosnar; A. Brown; M. Caamaño; F. Calviño; Calviani; D Cano-Ott; R. Cardella; A. Casanovas; F. Cerutti; Y. H. Chen; E. Chiaveri; 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; 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; 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/202023901043

All issues

Volume 239 (2020)

EPJ Web Conf., 239 (2020) 01043

Abstract

Open Access

Issue		EPJ Web Conf. Volume 239, 2020 ND 2019: International Conference on Nuclear Data for Science and Technology


Article Number		01043
Number of page(s)		5
Section		Nuclear Reaction Measurements
DOI		https://doi.org/10.1051/epjconf/202023901043
Published online		30 September 2020

EPJ Web of Conferences 239, 01043 (2020)
https://doi.org/10.1051/epjconf/202023901043

Preliminary results on the ²³³U α-ratio measurement at n_TOF

M. Bacak¹^,2^,3^*, M. Aïche⁴, G. Bélier⁵, E. Berthoumieux³, M. Diakaki³^,8, E. Dupont³, F. Gunsing³^,1, J. Heyse⁶, S. Kopecky⁶, M. Krtička⁷, B. Laurent⁵, H. Leeb², L. Mathieu⁴, P. Schillebeeckx⁶, O. Serot⁸, J. Taieb⁵, S. Valenta⁷, V. Vlachoudis¹, O. Aberle¹, J. Andrzejewski⁹, L. Audouin¹⁰, J. Balibrea¹¹, M. Barbagallo¹², F. Bečvář⁷, J. Billowes¹³, D. Bosnar¹⁴, A. Brown¹⁵, M. Caamaño¹⁶, F. Calviño¹⁷, Calviani¹, D Cano-Ott¹¹, R. Cardella¹, A. Casanovas¹⁷, F. Cerutti¹, Y. H. Chen¹⁰, E. Chiaveri¹^,13^,18, Colonna¹², G. Cortés¹⁷, M. A. Cortés-Giraldo¹⁸, L. Cosentino¹⁹, L. A. Damone¹²^,20, C Domingo-Pardo²¹, R. Dressler²², I. Durán¹⁶, B. Fernández-Domínguez¹⁶, A. Ferrari¹, P. Ferreira²³, P. Finocchiaro¹⁹, V. Furman²⁴, K. Göbel²⁵, A. R. García¹¹, A. Gawlik⁹, S. Gilardoni¹, T. Glodariu²⁰, I. F. Gonçalves²³, E. González-Romero¹¹, 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. Knapova⁷, M. Kokkoris²⁹, D. Kurtulgil²⁵, E Leal-Cidoncha¹⁶, C. Lederer³⁰, J Lerendegui-Marco¹⁸, S. Lo Meo³¹^,32, S. J. Lonsdale³⁰, D. Macina¹, A. Manna³²^,33, J. Marganiec⁹^,34, T. Martínez¹¹, A. Masi¹, C. Massimi³²^,33, P. Mastinu³⁵, M. Mastromarco¹², E. A. Maugeri²², A. Mazzone¹²^,36, E. Mendoza¹¹, A. Mengoni³¹, P. M. Milazzo³⁷, F. Mingrone¹, A. Musumarra¹⁹^,38, A. Negret²⁶, R. Nolte³⁴, A. Oprea²⁶, N. Patronis³⁹, A. Pavlik⁴⁰, J. Perkowski⁹, 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. Tagliente¹², J. L. Tain²¹, A. Tarifeño-Saldivia¹⁷, L Tassan-Got¹⁰, G. Vannini³²^,33, V. Variale¹², P. Vaz²³, A. Ventura³², R. Vlastou²⁹, A. Wallner⁴⁵, S. Warren¹³, C. Weiss², P. J. Woods³⁰, T. Wright¹³, P. Žugec¹⁴^,1 and the n_TOF Collaboration

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 Charles University, Prague, Czech Republic
⁸ CEA, DEN, Cadarache, France
⁹ University of Lodz, Poland
¹⁰ Institut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-Saclay, F-91406 Orsay Cedex, France
¹¹ Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Spain
¹² Istituto Nazionale di Fisica Nucleare, Sezione di Bari, Italy
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

^* e-mail: michael.bacak@cern.ch

Published online: 30 September 2020

Abstract

²³³U is the fissile nuclei in the Th-U fuel cycle with a particularily small neutron capture cross setion which is on average about one order of magnitude lower than its fission cross section. Hence, the measurement of the ²³³U(n, γ) cross section relies on a method to accurately distinguish between capture and fission γ-rays. A measurement of the ²³³U α-ratio has been performed at the n_TOF facility at CERN using a so-called fission tagging setup, coupling n_TOF 's Total Absorption Calorimeter with a novel fission chamber to tag the fission γ-rays. The experimental setup is described and essential parts of the analysis are discussed. Finally, a preliminary ²³³U α-ratio is presented.

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