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In particle physics research centers like CERN, it is critical to monitor the movements of devices inside the particle accelerator. When a technical issue in the tunnel occurs, the particle beams with high kinetic energy are sent, via two detours in the main ring, to two mainly metal absorber blocks, the so-called beam dumps, in order to stop them. The massive kinetic energy deposited on these dumps can cause them to move. Accelerometers are one measurement device that can be used to monitor the acceleration and, indirectly, the position of the dumps. In this thesis, the mechanical structure of an interferometer-based inertial accelerometer with a flexible membrane has been designed. In order to reduce the accelerator beam kinetic energy, a helical movement occurs in the particle beams, it was therefore necessary to measure the acceleration in the three spatial axes so a three-axis accelerometer is considered. As part of the theoretical approach, it was needed to focus on the requirements provided and to analyze the deformation, stress, and vibration of the structure. To ensure its reliability and precision, FEM analysis using ANSYS 19.1 was used and crosschecked by hand. After the theoretical approach, those characteristics were ensured with different types of experimental tests, such as an impact or vibration test. As a conclusion, theoretical requisites of the accelerometer have been met, except the complete linearity of the frequency response. The non-accomplishment of this requirement may lead to some error on the higher frequency acceleration measurements

The current design of the RF power supply for the International Fusion Materials Irradiation Facility (IFMIF) is based upon tetrodes technology. Due to the improvement in the solid state amplifiers technology, the possibility of using this option for IFMIF is becoming a very competitive alternative presenting a priori several advantages in terms of availability, reliability and logistics. The current technology based on RF tetrodes chains leads no room for substantial improvements in terms of availability being the requirement for the RF system hard to achieve. On the other hand the solid state amplifiers technology opens from its concept several options to increase the system availability. The principal goals of this paper are the use of RAMI (Reliability, Availability, Maintainability and Inspectability) analysis in the RF tetrodes design to led a future work to compare the availability, reliability and logistic performances for both alternatives. The Project will consist in two parts: the development of a logistic support methodology and a specific study of the first part with an example related to the IFMIF facility. First part: Develop a systematic procedure to study the logistic support required by any component of the IFMIF facility, focusing on the component’s effect in the availability of the whole facility Second part: For the radiofrequency (RF) modules in the deuteron accelerator, study its logistic requirements and determinate the optimum quantity of the involved resources. It will comprise a research task of the requirements in the available documentation and a following task consisting in the simulation of the behaviour of the RF modules, in order to determinate the logistic support required.

Premi extraordinari doctorat curs 2011-2012, àmbit d’Enginyeria Industrial Two innovative radiotherapy (RT) approaches are under development at the ID17 Biomedical Beamline of the European Synchrotron Radiation Facility (ESRF): microbeam radiation therapy (MRT) and minibeam radiation therapy (MBRT). The two main distinct characteristics with respect to conventional RT are the use of submillimetric field sizes and spatial fractionation of the dose. This PhD work deals with different features related to small-field dosimetry involved in these techniques. Monte Carlo (MC) calculations and several experimental methods are used with this aim in mind. The core of this PhD Thesis consisted of the development and benchmarking of an MC-based computation engine for a treatment planning system devoted to MRT within the framework of the preparation of forthcoming MRT clinical trials. Additional achievements were the definition of safe MRT irradiation protocols, the assessment of scatter factors in MRT, the further improvement of the MRT therapeutic index by injecting a contrast agent into the tumour and the definition of a dosimetry protocol for preclinical trials in MBRT. Award-winning

Desarrollo de instrumentación especializada y desarrollo de algoritmos especiales capaces de interpertar las señales de medida del flujo bifásico. Combinaciones de diferentes instrumentos (Spool Piece) serán analizados y su influencia en el flujo bifásico. Outgoing

This Master Thesis has been carried out by Luis Mora Vallejo and Jacobo Zegrí Reiriz. We are both two Spanish students who are studying Engineering in the Universitat Politècnica de Catalunya (UPC) in the engineer‟s school Escola Tècnica Superior d‟Enginyeria Industrial de Barcelona (ETSEIB). This degree has got a common part the first two years and after that it is possible to be specialized in one sector of the industry. Then, we both decided to take part of the nuclear section in order to help our country in the energetics situation and also under the feeling of improvement that we are looking for ourselves. After sharing last three years in the same specialization we decided separately to carry out a Master Thesis abroad in order to obtain the Master Thesis of Science in Nuclear Engineering. However, there are a limited number of universities in the ENEN‟s network so it was necessary to have a good choice of what university would have been chosen. For many reasons we decided to work in the Politecnico di Torino and after knowing that we both were accepted we thought that it could be a good experience not only for us, but also for the Politecnico di Torino and the ETSEIB the possibility of carrying out together a complete thesis in our sector. Concerning the teamwork, it is important to say that this project is the result of the effort and the work of two people. As it will be seen in following lines, this Thesis has got some parts and although we have worked the same one has been more specialized in one than the other. For instance, whereas the theoretical part has been more summarized and searched by Jacobo, the code with Matlab has been more developed by Luis. This fact does not entail that one of the two members has made only one thing as we have been carrying out the Thesis together and both Luis and Jacobo have been working on theoretical part and Matlab respectively. Apart from that, other parts like the experimental analysis and the measurements have been developed by us at the same level and dedication because of the fact that working together it is possible to measure faster and with more precision and also it is easier to study the results and therefore to obtain conclusions as we are sharing our knowledge in this technology. The most important objectives that are pursued in this Thesis are related with the analysis of a horizontal air-water flow. It would be interesting to obtain an experimental and theoretical characterization of a horizontal flow using different evaluations, theories and analysis such as flow pattern analysis, pressure drop evaluations, void fraction evaluation and mass flow rate measurements. In order to achieve our goal the Department of Energetics (DENER) of the Politecnico di Torino has put at our disposal several offices, computers, software and facilities to work at our Thesis. Concerning the experimental system, which we have been working with, it will be accurately explained on next chapters. However, it can be said that it contains the necessary devices to develop our tasks related to the measurements in a correct and safety way. This Thesis is not only an analysis about the data obtained as it is also necessary to carry out a deep research work because of the difficulty of working on two-phase flow and also because of the length of the field. The experimental part consists on taking a large number of data to know, after all measurements with laboratory devices, the properties of the mixture which is flowing through a pipe only with the knowledge of some parameters. So it could be said that the aim of this work is to define an appropriate theoretical and experimental methodology that can be used in experimental apparatus, able to simulate the thermohydraulic of Nuclear Power Plant in steady state and accident (LOCA) conditions, in order to measure two-phase flow quantities as mass flow rates and velocities of water and vapour. Outgoing

Fa 150 anys que es van crear els estudis d'enginyeria industrial a Espanya amb l'objectiu de donar resposta a la creixent industrialització. Tanmateix, de totes les escoles inicialment creades sols l'Escola d'Enginyeria Industrial Barcelona va continuar la seva tasca sense interrupció des de 1851. A un període tant dilatat d'existència li correspon un ampli ventall d'esdeveniments. No obstant, aquesta tesi sols n'estudia un de concret emmarcat entre dues dates: la creació de la Càtedra Ferran Tallada el 1955 i els esdeveniments relacionats amb ella fins que al 1962 la primera promoció d'alumnes del Pla 1957 va iniciar les matèries pròpies de l'especialitat de Tècniques Energètiques.Així, doncs, en primer lloc hem dut a terme un estudi de la situació internacional a través d'una classificació de països implicats atenent al nombre de reactor de recerca i de potència que posseïen, cosa que ens ha permès situar Espanya dins d'un grup de països de desenvolupament similar pel que respecta a l'energia nuclear.A continuació, hem estudiat les peculiaritats del desenvolupament nuclear espanyol des de la constitució d'EPALE (Estudios y Patentes de Aleaciones Especiales) fins a la creació de la Junta d'Energia Nuclear. I després, hem analitzat les repercussions del programa Àtoms per la Pau, fins a la construcció dels primers reactors experimentals.El nucli central de la tesi el constitueix l'anàlisi de les activitats docents de la Càtedra Ferran Tallada durant els seus primers anys i el paper rellevant que va tenir en la formació dels enginyers que haurien de fer-se càrrec de les futures centrals nuclears de potència. La comparació dels estudis impartits amb els dels altres països, desenvolupada en un altre capítol, permet confirmar que, tant per la durada com pels continguts, els ensenyaments de la càtedra barcelonina estaven en la mateixa línia que altres destacades escoles d'enginyeria europees.Tot i gaudir de condicions nacionals i internacionals favorables, el ràpid i reeixit establiment i posterior desenvolupament de la Càtedra Ferran Tallada no pot explicar-se sense tenir en compte la decidida implicació dels industrials agrupats a la Cambra Oficial d'Indústria.La tesi analitza la participació decidida de la Cambra en el recolzament dels ensenyaments tècnics, en general, i dels nuclears, en particular, a través de subvencions, beques i de la adquisició per a l'Escola d'un reactor nuclear anomenat Argos.La construcció i instal·lació del reactor Argos, que es estudiat en un altre capítol, va significar una important innovació tant en el camp polític com en el tecnològic ja que fou el primer reactor construït a Espanya. Per això creiem que, lluny dels criteris de rendibilitat econòmica, l'Argos fou dut a terme per la Junta d'Energia Nuclear per raons estrictament polítiques que cercaven la formació i ensinistrament dels tècnics amb la finalitat que la seva construcció servís de prova per la realització posterior d'un reactor prototip espanyol que fos model per a les futures centrals nuclears.Finalment, amb la constitució de l'especialitat de Tècniques Energètiques -especialitat adreçada a la formació en enginyeria nuclear- la Càtedra Ferran Tallada, gràcies també a la col·laboració de la Cambra, va reorientar la seva activitat cap a les aplicacions dels isòtops radioactius, aspecte que és estudiat en un altre capítol. Es pot concloure doncs que la professionalització de l'enginyeria nuclear a l'Escola d'Enginyeria Industrials de Barcelona va ser possible gràcies a la voluntat decidida de la societat civil i més concretament dels industrials que des de la Cambra Oficial d'Indústria apostaren fort per la formació dels tècniques en aquesta disciplina com a pas previ al desenvolupament de l'energia nuclear amb la construcció de centrals productores d'energia elèctrica.