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A Close Look at the Communication Efficiency and the Energy Footprints of Robust Federated Learning in Industrial IoT
Luca Barbieri;Sanaz Kianoush;Monica Nicoli;Luigi Serio;Stefano Savazzi
IEEE Internet of Things Journal
Year: 2025 | Early Access Article |
Federated Learning (FL) can be used to distribute Machine Learning (ML) tasks across edge and Internet of Things (IoT) devices with limited resources.FL provides an alternative and much more practical solution to classical Artificial Intelligence (AI), which requires moving large data volumes to energy-hungry data centers.On the other hand, sustainability of FL processes should be accurately quant...Show More
Towards Explainable Graph Neural Networks for Neurological Evaluation on EEG Signals
Andrea Protani;Lorenzo Giusti;Chiara Iacovelli;Albert Sund Aillet;Diogo Reis Santos;Giuseppe Reale;Aurelia Zauli;Marco Moci;Marta Garbuglia;Pierpaolo Brutti;Pietro Caliandro;Luigi Serio
2024 IEEE International Conference on E-health Networking, Application & Services (HealthCom)
Year: 2024 | Conference Paper |
After an acute stroke, accurately estimating stroke severity is crucial for healthcare professionals to effectively manage patient's treatment. Graph theory methods have shown that brain connectivity undergoes frequency-dependent reorganization post-stroke, adapting to new conditions. Traditional methods often rely on handcrafted features that may not capture the complexities of clinical phenomena...Show More
Towards Explainable Graph Neural Networks for Neurological Evaluation on EEG Signals
Andrea Protani;Lorenzo Giusti;Chiara Iacovelli;Albert Sund Aillet;Diogo Reis Santos;Giuseppe Reale;Aurelia Zauli;Marco Moci;Marta Garbuglia;Pierpaolo Brutti;Pietro Caliandro;Luigi Serio
Year: 2024 | Conference Paper |
Functional dependencies in complex technical infrastructures can cause unexpected cascades of failures. Given the complexity and continuous evolution in time of the infrastructure architecture, the identification of functional dependencies using the classical methods of system decomposition and logic analysis is not feasible. Then, we consider the availability of databases of alarm messages and fr...Show More
Decentralized Federated Learning for Healthcare Networks: A Case Study on Tumor Segmentation
Bernardo Camajori Tedeschini;Stefano Savazzi;Roman Stoklasa;Luca Barbieri;Ioannis Stathopoulos;Monica Nicoli;Luigi Serio
Smart healthcare relies on artificial intelligence (AI) functions for learning and analysis of patient data. Since large and diverse datasets for training of Machine Learning (ML) models can rarely be found in individual medical centers, classical centralized AI requires moving privacy-sensitive data from medical institutions to data centers that process the fused information. Training on data cen...Show More
A Machine-Learning Based Methodology for Performance Analysis in Particles Accelerator Facilities
2017 European Conference on Electrical Engineering and Computer Science (EECS)
Year: 2017 | Conference Paper |
CERNs Accelerators facilities require adequate tools to operate, maintain and guide the consolidation of the machines, to fulfil the physics program and deliver the required luminosity for the experiments. It is therefore relevant to identify clear and easy metrics to monitor objectively the activities and guide the management to implement strategies, to improve performances, optimize costs as wel...Show More
Upgrade of the CERN Superconducting Magnet Test Facility
Marta Bajko;Vladislav Benda;Luca Bottura;Alexandre Joel Broche;Fabio Formenti;Sebastiano Giannelli;Christian Giloux;Antoine Kosmicki;Consuelo Goncalves Perez;E. Perez-Duenas;Volker Mertens;Gijs De Rijk;Lucio Rossi;Nuno Dos Santos;Luigi Serio;Michal Strychalski;Hugues Thiesen;Arnaud Vande Craen
The superconducting magnet test facility at CERN has hosted the series test of the majority of the LHC magnets. The facility has evolved, and is presently divided in two main areas: a vertical test facility, equipped with three vertical cryostats, and a horizontal test facility, with ten feedboxes for test of cryostated magnets in horizontal position. The test demands from construction projects, s...Show More
Upgrade of the CERN Superconducting Magnet Test Facility
Marta Bajko;Vladislav Benda;Luca Bottura;Alexandre Joel Broche;Fabio Formenti;Sebastiano Giannelli;Christian Giloux;Antoine Kosmicki;Consuelo Goncalves Perez;E. Perez-Duenas;Volker Mertens;Gijs De Rijk;Lucio Rossi;Nuno Dos Santos;Luigi Serio;Michal Strychalski;Hugues Thiesen;Arnaud Vande Craen
A New Cryogenic Test Facility for Large and Heavy Superconducting Magnets
Luigi Serio;Pierre Schnizer;Michel Arnaud;Caterina Bertone;Enrique Blanco;Daniel Calcoen;Maryline Charrondiere;Eun Jung Cho;Gert-Jan Coelingh;Knud Dahlerup-Petersen;Fahim Dhalla;Reiner Denz;J. Hendrie Derking;Giancarlo Golluccio;David Hay;Andre Henriques;Vitaliano Inglese;Antoine Kosmicki;Volker Mertens;Dominique Missiaen;Hans Mueller;Yvon Muttoni;Stefano Moccia;Rene Necca;Antonio Perin;Ina Pschorn;Stephan Russenschuck;Jens Steckert;Piotr Szwangruber;Hugues Thiesen;Vasilis Velonas;Felix Wamers;Gerard Willering;Yu Xiang
CERN has recently designed and constructed a new cryogenic facility for testing large and heavy superconducting magnets at liquid helium temperatures. The facility, erected in a large assembly hall with cranes capable of up to 100 t, provides a cooling capacity of 1.2 kW at 4.5 K equivalent, 15-kW LN2 cooling and warming capabilities for up to three magnets in parallel. The facility provides the r...Show More
A New Cryogenic Test Facility for Large and Heavy Superconducting Magnets
Luigi Serio;Pierre Schnizer;Michel Arnaud;Caterina Bertone;Enrique Blanco;Daniel Calcoen;Maryline Charrondiere;Eun Jung Cho;Gert-Jan Coelingh;Knud Dahlerup-Petersen;Fahim Dhalla;Reiner Denz;J. Hendrie Derking;Giancarlo Golluccio;David Hay;Andre Henriques;Vitaliano Inglese;Antoine Kosmicki;Volker Mertens;Dominique Missiaen;Hans Mueller;Yvon Muttoni;Stefano Moccia;Rene Necca;Antonio Perin;Ina Pschorn;Stephan Russenschuck;Jens Steckert;Piotr Szwangruber;Hugues Thiesen;Vasilis Velonas;Felix Wamers;Gerard Willering;Yu Xiang
Testing of the Superconducting Magnets for the FAIR Project
Anna Mierau;Pierre Schnizer;Egbert Fischer;Hans Mueller;Hamlet Khodzhibagiyan;Sergey Kostromin;Luigi Serio;Stephan Russenschuck;Olaf Dunkel
The Facility for Antiproton and Ion Research (FAIR) is currently being constructed at GSI Darmstadt. Around 500 superconducting magnets are being procured for the heavy ion synchrotron SIS100, and around 180 are being procured for the Super Fragment Separator (Super-FRS). All these magnets have to be tested at cryogenic temperature in order to verify and guarantee their performances before they ar...Show More
Test Results of Pressure Head Mitigation of Supercritical Helium Across Cold Circulators at KSTAR for the Justification of the ITER Central Solenoid Cooling Circuit Design
H.-S. Chang;R. Maekawa;A. Forgeas;M. Bonneton;M. Chalifour;L. Serio;D.-S. Park;J.-J. Joo;K.-M. Moon;H.-J. Lee;Y.-M. Park
The pressure head necessary for the forced convection of supercritical helium (SHe) across the ITER superconducting (SC) magnet system is generated by centrifugal-compressor type cold circulators. From the viewpoint of the cryogenic system, simulation results indicate that the main challenge of the ITER Central Solenoid (CS) operation is the peaking pressure head of SHe across the cold circulator ...Show More
System identification and robust anti-windup control for a helium liquifier
Proceedings of 2012 UKACC International Conference on Control
Year: 2012 | Conference Paper |
This paper addresses the system identification and advanced control of a helium (He) liquifier supplying cooling power at liquid helium (LHe) temperatures (-269 °C). To study the dynamic response to heat load variation, a He liquifier simulation model is utilized. The main focus is to regulate the discharge pressure of the compressor station to guarantee stable system operation. System identificat...Show More
Dynamic Simulation of Sub-Scale ITER CS/STR Cooling Loop
R. Maekawa;K. Oba;S. Takami;A. Iwamoto;H. S. Chang;A. Forgeas;L. Serio;R. Vallocorba;B. Rousset;C. Hoa;L. Monteiro
The dynamic simulation of a sub-scale ITER Central Solenoid (CS)/STRucture (STR) cooling loop has been performed to investigate the cryogenic control strategies against pulsating heat loads. HELIOS facility has been modified for this particular study, which consists of a Liquid Helium (LHe) reservoir with two immersed heat exchangers, a circulation pump and an approximately 130 m long piping with ...Show More
Feasibility Studies of the ITER Cryogenic System at KSTAR
H.-S. Chang;A. Forgeas;G. Vincent;R. Maekawa;L. Serio;Y.-M. Park;K.-W. Cho;D.-S. Park;J.-J. Joo;K.-M. Moon;V. Kalinin
One of the main challenges of the ITER cryogenic system is to manage the large pulsed heat load variation generated by the superconducting magnet system during the fusion experiments. A solution proposed to smooth such pulses and verified by numerical simulations is to use the ITER magnet structure (ST) system as a thermal buffer by taking advantage of its large mass of about 5,000 tons and conseq...Show More
The commissioning of the LHC technical systems
Roberto Saban;Reyes Alemany-Fernandez;Vito Baggiolini;Amalia Ballarino;Esther Barbero-Soto;Boris Bellesia;Frederick Bordry;Davide Bozzini;Maria-Paz Casas-Lino;Vincent Chareyre;Serge Claudet;Gert-Jan Coelingh;Knud Dahlerup-Petersen;Reiner Denz;Sandor Feher;Robert Flora;Magali Gruwe;Verena Kain;Glyn Kirby;Michael Koratzinos;Robin Lauckner;Sandrine Le Naour;Karl-Hubert Mess;Francois Millet;Valerie Montabonnet;David Nisbet;Blanca Perea-Solano;Mirko Pojer;Rosario Principe;Roger Rabehl;Adriaan Rijllart;Stefano Redaelli;Felix Rodriguez-Mateos;Rudiger Schmidt;Luigi Serio;Andrzej Siemko;Matteo Solfaroli-Camillocci;Hugues Thiesen;Walter Venturini;Antonio Vergara-Fernandez;Arjan Verweij;Markus Zerlauth
The LHC is an accelerator with unprecedented complexity where the energy stored in magnets and the beams exceeds other accelerators by one-to-two orders of magnitude. To ensure a safe and efficient machine start-up without being plagued by technical problems, a phase of "hardware commissioning" was introduced: a thorough commissioning of technical systems without beam. This activity started in Jun...Show More
The commissioning of the LHC technical systems
Roberto Saban;Reyes Alemany-Fernandez;Vito Baggiolini;Amalia Ballarino;Esther Barbero-Soto;Boris Bellesia;Frederick Bordry;Davide Bozzini;Maria-Paz Casas-Lino;Vincent Chareyre;Serge Claudet;Gert-Jan Coelingh;Knud Dahlerup-Petersen;Reiner Denz;Sandor Feher;Robert Flora;Magali Gruwe;Verena Kain;Glyn Kirby;Michael Koratzinos;Robin Lauckner;Sandrine Le Naour;Karl-Hubert Mess;Francois Millet;Valerie Montabonnet;David Nisbet;Blanca Perea-Solano;Mirko Pojer;Rosario Principe;Roger Rabehl;Adriaan Rijllart;Stefano Redaelli;Felix Rodriguez-Mateos;Rudiger Schmidt;Luigi Serio;Andrzej Siemko;Matteo Solfaroli-Camillocci;Hugues Thiesen;Walter Venturini;Antonio Vergara-Fernandez;Arjan Verweij;Markus Zerlauth
Year: 2007 | Conference Paper |
The LHC test string: results from Run 2
R. Saban;E. Blanco-Vinuela;F. Bordry;L. Bottura;D. Bozzini;C. Calzas-Rodriguez;E. Carlier;R. Denz;V. Granata;R. Herzog;Q. King;D. Milani;B. Puccio;F. Rodriguez-Mateos;R. Schmidt;L. Serio;F. Tegenfeldt;H. Thiesen;R. van Weelderen
Proceedings of the 2003 Particle Accelerator Conference
Year: 2003 | Conference Paper |
Cited by: Papers (1)
After the commissioning and the first powering of the main circuits in autumn 2001 in its shorter version, the facility was completed to a full cell of LHC in the regular part of an arc and commissioned in July 2002. During this second run, which accumulated more than 4000 hours below 2 K, a very dense experimental program was carried-out to validate the final versions of the technical systems and...Show More
First powering of the LHC Test String 2
F. Bordry;D. Bozzini;K. Dahlerup-Petersen;R. Denz;B. Puccio;A. Rijllart;F. Rodriguez-Mateos;R. Saban;R. Schmidt;L. Serio;H. Thiesen
String 2 is a full-size model of a regular cell in an LHC arc. In the first phase, three dipole magnets and two quadrupole magnets have been assembled in String 2 and commissioning started in April 2001. By the beginning of 2002 three pre-series dipole magnets will be added to complete the cell. As for its predecessor String 1, the facility was built to individually validate the LHC systems and to...Show More
The preparation of the cryomagnets and the assembly of the LHC test String 2
O. Andujar;D. Bozzini;C. Calzas-Rodriguez;P. Cruikshank;O. Desebe;T. Dobers;A. Jacquemod;N. Kos;P. Lepeule;W. Maan;D. Missiaen;V. Parma;G. Riddone;F. Rodriguez-Mateos;P. Rohmig;R. Saban;G. Schneider;L. Serio;B. Skoczen;J.P. Tock;R. Veness;Ch. Vuitton
PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268)
Year: 2001 | Conference Paper |
Cited by: Papers (3)
The numerous complex activities required to prepare the cryomagnets for the installation in String 2 are described. These include the configuration of the mechanical interfaces, the conditioning of the beam tubes, the installation of beam screens and the instrumentation as well as the final checks. The preparation of the cryomagnets for String 2 has been a dress rehearsal for the preparation that ...Show More
The preparation of the cryomagnets and the assembly of the LHC test String 2
O. Andujar;D. Bozzini;C. Calzas-Rodriguez;P. Cruikshank;O. Desebe;T. Dobers;A. Jacquemod;N. Kos;P. Lepeule;W. Maan;D. Missiaen;V. Parma;G. Riddone;F. Rodriguez-Mateos;P. Rohmig;R. Saban;G. Schneider;L. Serio;B. Skoczen;J.P. Tock;R. Veness;Ch. Vuitton
The commissioning of the LHC test string 2
F. Bordry;D. Bozzini;J. Casas-Cubillos;P. Cruikshank;K. Dahlerup-Petersen;R. Denz;R. Herzog;B. Puccio;F. Rodriguez-Mateos;R. Saban;R. Schmidt;L. Serio
PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268)
Year: 2001 | Conference Paper |
Cited by: Papers (1)
String 2 is a full-size model of an LHC cell of the regular part of the arc. It is composed of six dipole magnets with their correctors, two short straight sections with their orbit and lattice corrector magnets, and a cryogenic distribution line running alongside the magnets. The commissioning of String 2 Phase 1, with one half-cell and the following quadrupole, has started in April 2001. As for ...Show More
The LHC magnet string programme: status and future plans
F. Bordry;J. Casas-Cubillos;P. Cruikshank;K. Dahlerup-Petersen;F. Rodriguez-Mateos;P. Proudlock;G. Riddone;R. Saban;R. Schmidt;L. Serio;C. Wyss
Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)
Year: 1999 | Conference Paper |
Cited by: Papers (1)
String 1, with one twin aperture quadrupole and three twin aperture 10-m dipoles (MB1, MB2 and MB3) powered in series and operating at 1.9 K, has recently been dismantled after four years of operation interrupted by technical stops and shutdowns for upgrading or exchanging equipment. Following the validation of the main LHC systems (cryogenics, magnet protection, vacuum, powering and energy extrac...Show More
Test results on the first 13 kA prototype HTS leads for the LHC
Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)
Year: 1999 | Conference Paper |
Cited by: Papers (3)
Prototypes of 13 kA HTS current leads for the Large Hadron Collider (LHC) have been specified by CERN and produced by several manufacturers. The specification defines the required thermo-electric performance and the geometric limitations imposed by the LHC infrastructure. A report is given of the results obtained from extensive tests on these leads.Show More
Experiments and cycling at the LHC Prototype Half-Cell
R. Saban;J. Casas-Cubillos;P. Collier;P. Cruikshank;K. Dahlerup-Petersen;B. Desforges;B. Hilbert;G. Krainz;F. Momal;A. Rijllart;F. Rodriguez-Mateos;R. Schmidt;L. Serio
Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167)
Year: 1997 | Conference Paper |
Cited by: Papers (5)
The first version of the LHC Prototype Half-Cell has been in operation since February 1995. It consists of one quadrupole and three 10-m twin aperture dipole magnets which operate at 1.9 K. One electrical circuit powers all the magnets in series. This experimental set-up has been used to observe and study phenomena which appear when the systems are assembled in one unit and therefore influence one...Show More
Installation and inactive commissioning of the JET active gas handling system (AGHS)
J.L. Hemmerich;A.C. Bell;P. Boucquey;C. Caldwell-Nichols;P. Chuilon;F. Delvart;B. Grieveson;R. Haange;G. Jones;R. Lasser;M. Laveyry;J. Lupo;J. Mart;P. Milverton;J.-L. Salanave;L. Serio;N. Skinner;R. Stagg;K.D. Walker;J. Yorkshades;A. Konstantellos;E. Kussel
15th IEEE/NPSS Symposium on Fusion Engineering - Supplement,
Year: 1993 | Conference Paper |
Cited by: Papers (5)
The installation of all AGHS subsystems in compliance with a strict Quality Assurance Programme was completed in 1993. Installation was followed by end-to-end commissioning of signal and control loop connections to the Distributed Control System. Plant layout and function are described and results of process tests with hydrogen, deuterium and other test gases are presented. These tests have reveal...Show More
Installation and inactive commissioning of the JET active gas handling system (AGHS)
J.L. Hemmerich;A.C. Bell;P. Boucquey;C. Caldwell-Nichols;P. Chuilon;F. Delvart;B. Grieveson;R. Haange;G. Jones;R. Lasser;M. Laveyry;J. Lupo;J. Mart;P. Milverton;J.-L. Salanave;L. Serio;N. Skinner;R. Stagg;K.D. Walker;J. Yorkshades;A. Konstantellos;E. Kussel
Year: 1993 | Conference Paper |
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