Now showing items 1-20 of 28

  • A negative reactivity feedback driven by induced buoyancy after a temperature transient in lead-cooled fast reactors 

    Arias Montenegro, Francisco Javier (2017-10-24)
    Article
    Open Access
    Consideration is given to the possibility to use changes in buoyancy as a negative reactivity feedback mechanism during temperature transients in heavy liquid metal fast reactors (HLMFRs). It is shown that by the proper ...
  • A new ion cyclotron range of frequency scenario for bulk ion heating in deuterium-tritium plasmas: How to utilize intrinsic impurities in our favour 

    Kazakov, Ye O.; Ongena, Jozef; Van Eester, Dirk; Bilato, Roberto; Dumont, Rémi J.; Lerche, Ernesto A.; Mantsinen, Mervi; Messiaen, André M. (American Institute of Physics Publising LLC, 2015-08-24)
    Article
    Open Access
    A fusion reactor requires plasma pre-heating before the rate of deuterium-tritium fusion reactions becomes significant. In ITER, radiofrequency (RF) heating of He ions, additionally puffed into the plasma, is one of the ...
  • Applying UPC scaling-up methodology to the LSTF-PKL counterpart test 

    Martínez Quiroga, Víctor Manuel; Reventós Puigjaner, Francesc Josep; Freixa Terradas, Jordi (2014-03-02)
    Article
    Open Access
    In the framework of the nodalization qualification process and quality guarantee procedures and following the guidelines of Kv-scaled analysis and UMAE methodology, further development has been performed by UPC team resulting ...
  • ARGOS un reactor a la diagonal 

    Barca Salom, Francesc Xavier (2011-04-14)
    External research report
    Open Access
    El reactor Argos va funcionar des del 16 de gener de 1963 en què va aconseguir l’autorització provisional. Al 1976 el reactor fou aturat per exigències de la nova llei nuclear. Al 1987 es va procedir a la clausura i el ...
  • Assessment of the adequacy of RELAP5 system code for the simulation of IBLOCA transient scenarios for Pressurized Water Nuclear Reactors 

    Martín Gil, Kevin (Universitat Politècnica de Catalunya, 2019-06-21)
    Master thesis
    Restricted access - author's decision
    This project aims to present an approach to wireless communication and data transmission between a master device and multiple slave devices. The theme selected for the project is music, meaning that the data transferred ...
  • Be-7(n,alpha)He-4 reaction and the cosmological lithium problem: measurement of the cross section in a wide energy range at n_TOF at CERN 

    Barbagallo, Massimo; Musumarra, A.; Cosentino, L.; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (2016-10-03)
    Article
    Open Access
    The energy-dependent cross section of the Be7(n,alpha)He4 reaction, of interest for the so-called cosmological lithium problem in big bang nucleosynthesis, has been measured for the first time from 10 meV to 10 keV neutron ...
  • C-14 Production in Lead-Cooled Reactors 

    Muñoz Trallero, Andrea (Universitat Politècnica de Catalunya / Aalto University School of Science and Technology, 2010)
    Master thesis (pre-Bologna period)
    Open Access
    The increase in the energy consumption and the expected growth in the nuclear capacity make it necessary to look on for new technologies based in more sustainable and safe principles, such as lead-cooled reactors. This ...
  • Contribución al Desarrollo de la Multimedia de Física de Reactores Nucleares 

    Garre Werner, Guillermo (Universitat Politècnica de Catalunya, 2016-09-08)
    Bachelor thesis
    Open Access
    El proyecto “Contribución al Desarrollo de la Multimedia de Física de Reactores Nucleares” es el resultado del trabajo ininterrumpido de muchos profesionales. Se enmarca en el programa de docencia de la Cyber Learning ...
  • Desarrollo del código de seguridad para reactores de fusión AINA 4 para los análisis de seguridad de los diseños europeos de DEMO 

    Baeza Pérez, Eduard; Blas del Hoyo, Alfredo de; Riego Pérez, Albert; Fabbri, Marco (2017)
    Conference lecture
    Restricted access - publisher's policy
    Durante los últimos diez años, el código de seguridad AINA ha sido desarrollado con el objetivo de evaluar la evolución del plasma y los esfuerzos padecidos por los componentes internos de la vasija en distintos reactores ...
  • Development of the safety code AINA for the European DEMO designs 

    Baeza Pérez, Eduard; Blas del Hoyo, Alfredo de; Riego Pérez, Albert; Fabbri, Marco (2018-04-30)
    Article
    Restricted access - publisher's policy
    In order to evaluate plasma evolution and in-vessel components strains, a safety code called AINA has been developing during the last ten years for different fusion reactors designs. This work describes the new AINA code ...
  • DNB and Void Fraction TRACE Model Validation with PSBT Experiments 

    Jara Heredia, Daniel (Universitat Politècnica de Catalunya / Kungliga Tecniska Högskolan, 2010)
    Master thesis (pre-Bologna period)
    Open Access
    The aim of the thesis is the assessment and validation of numerical models for the prediction of detailed subchannel distribution and departure from nucleate boiling (DNB) to a full scale data on a prototypical PWR rod ...
  • Estudi paramètric de la transferència de triti en canals de metall líquid sota camps magnètics per reactors de fusió nuclear. 

    Lampon Diestre, Cristina (Universitat Politècnica de Catalunya, 2019-06-05)
    Master thesis
    Restricted access - author's decision
    In the frame of nuclear fusion as a carbon-free source of energy, the project DEMO studies -among others- the feasibility of the Dual Coolant Lithium Lead (DCLL) breeding blanket. As one of the key features of the breeding ...
  • Expérience de purification par voie électromagnétique de sels fondus 

    Sorroche Cerezales, Carlos (Universitat Politècnica de Catalunya / Institut National Polytechnique de Grenoble, 2010)
    Master thesis (pre-Bologna period)
    Open Access
    Dans ce rapport, on analyse la possibilité d’utiliser l’agitation électromagnétique pour accélérer la purification des sels fondus d’un réacteur nucléaire de Génération IV. Pour cela, on utilise une technique d’extraction ...
  • High-energy neutron-induced fission cross sections of natural lead and bismuth-209 

    Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2011-08-12)
    Article
    Restricted access - publisher's policy
    The CERN Neutron Time-Of-Flight (n TOF) facility is well suited to measure small neutron- induced ssion cross sections, as those of subactinides. The cross section ratios of natPb and 209Bi relative to 235U and 238U ...
  • High precision measurement of the radiative capture cross section of 238U at the n TOF CERN facility 

    Mingrone, Federica; Altstadt, Sebastian; Andrzejewski, Józef; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Riego Pérez, Albert (EDP Sciences, 2016)
    Conference report
    Open Access
    The importance of improving the accuracy on the capture cross-section of 238U has been addressed by the Nuclear Energy Agency, since its uncertainty significantly affects the uncertainties of key design parameters for both ...
  • Hydrodynamics study inside microchannels (microreactors) 

    Clemente Bautista, Alex (Universitat Politècnica de Catalunya / Univerza Ljubljani, 2008)
    Master thesis (pre-Bologna period)
    Restricted access - confidentiality agreement
  • Influence of the Fukushima Dai-ichi nuclear accident on Spanish environmental radioactivity levels 

    Baeza, A.; Corbacho, J.A.; Rodríguez, Alicia; Galván, J.; García Tenorio, R.; Manjón, G.; Mantero, Juan; Vioque, I.; Arnold Arias, Dèlia; Grossi, Claudia; Serrano Carreño, M. Isabel; Valles Murciano, M. Isabel; Vargas Drechsler, Arturo (Elsevier, 2012-12)
    Article
    Restricted access - publisher's policy
    This paper presents measurements of the effect of the atmospheric radioactive release from the Fukushima Dai-ichi nuclear power station at three sites belonging to the Spanish environmental monitoring system. Measured ...
  • Interfície gràfica per al simulador “Safaly” 

    Tous Nadal, Joan (Universitat Politècnica de Catalunya, 2006-06-14)
    Master thesis (pre-Bologna period)
    Open Access
    El codi SAFALY s'utilitza per als estudis de seguretat del reactor ITER. És important la participació en aquest projecte de professors i estudiants especialitzats en temes informàtics per millorar la interfície gràfica ...
  • Measurement of the 236U(n, f ) cross section from 170 meV to 2 MeV at the CERN n TOF facility 

    Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2011-10-31)
    Article
    Restricted access - publisher's policy
    The neutron-induced fission cross section of 236U was measured at the neutron Time-of-Flight (n TOF) facility at CERN relative to the standard 235U(n,f ) cross section for neutron energies ranging from above thermal ...
  • Measurement of the 241Am neutron capture cross section at the n TOF facility at CERN 

    Mendoza, E.; Cano-Ott, D; Altstadt, Sebastian; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Riego Pérez, Albert (EDP Sciences, 2016)
    Conference report
    Open Access
    New neutron cross section measurements of minor actinides have been performed recently in order to reduce the uncertainties in the evaluated data, which is important for the design of advanced nuclear reactors and, in ...