Recherche

Afficher tous les résultats pour

Accueil

Personne

Rainer Wesche

Cette personne n’est plus à l’EPFL

À propos
Confidentialité
Mentions légales

Graph Chatbot

Publications associées (100)

Comparing Dynamics: Deep Neural Networks versus Glassy Systems

Rainer Wesche, Mario Geiger, Stefano Spigler, Levent Dogus Sagun, Marco Baity-Jesi

We analyze numerically the training dynamics of deep neural networks (DNN) by using methods developed in statistical physics of glassy systems. The two main issues we address are the complexity of the loss-landscape and of the dynamics within it, and to wh ...

2018

High temperature superconductors for fusion at the Swiss Plasma Center

Rainer Wesche, Pierluigi Bruzzone, Davide Uglietti

High temperature superconductors (HTS) may become in future an option for the superconducting magnets of commercial fusion plants. At the Swiss Plasma Center (SPC) the R&D activity toward HTS high current, high field cables suitable for fusion magnets star ...

IOP Publishing Ltd2017

Design, Manufacture, and Test of an 80 kA-Class Nb3Sn Cable-In-Conduit Conductor With Rectangular Geometry and Distributed Pressure Relief Channels

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov, Kamil Sedlák

Within the frame of the R& D activities carried out in Europe for the toroidal field coils of the nuclear fusion device DEMO, a fundamental milestone was considered to be the demonstration of Nb3Sn cable-in-conduit conductors (CICC) performance in the dema ...

IEEE Institute of Electrical and Electronics Engineers2017

Design and R&D for the DEMO Toroidal Field Coils Based on Nb3Sn React and Wind Method

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov, Kamil Sedlák

In 2013, the Swiss Plasma Center proposed a Toroidal Field (TF) layout for the DEMO-EUROfusion tokamak, based on a graded winding made of layers of Nb3Sn (react&wind) and NbTi conductors. The R&D effort led in 2015 to a full size prototype conductor tested ...

IEEE Institute of Electrical and Electronics Engineers2017

Cyclic load effect on round strands made by twisted stacks of HTS tapes

Rainer Wesche, Pierluigi Bruzzone, Davide Uglietti

2017

Central solenoid winding pack design for DEMO

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov, Davide Uglietti, Kamil Sedlák

The present study aims to reduce the outer radius of the central solenoid (CS) with respect to its nominal size specified by EUROfusion for a maintained CS magnetic flux. A reduced outer CS radius would allow the reduction of the overall size and cost of t ...

ELSEVIER2017

Design Optimization of Round Strands Made by Twisted Stacks of HTS Tapes

Rainer Wesche, Pierluigi Bruzzone, Davide Uglietti

Atwisted stack of high-temperature superconducting (HTS) tapes soldered into copper profiles was used as a strand in the fabrication of the 60-kA/ 12-T HTS cable prototype at the Center for Research in Plasma Physics (CRPP). Considering the strand in gener ...

IEEE Institute of Electrical and Electronics Engineers2016

Design, Manufacture and Test of a 82kA React&Wind TF Conductor for DEMO

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov, Kamil Sedlák

The Toroidal Field Coils (TFC) of the EUROFusion DEMO reactor call for Nb3Sn conductor with high field and high current. Another major requirement is the cost effectiveness, to keep the ratio of investment to electric power in the same range of the competi ...

IEEE Institute of Electrical and Electronics Engineers2016

Statistics of Test Results for the ITER Nb3Sn and NbTi Conductors in the SULTAN Facility

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov, Kamil Sedlák

The series production of Nb3Sn and NbTi cable-inconduit conductors (CICC) for the winding of various coils in the International Thermonuclear Experimental Reactor (ITER) magnet system is being completed in 2015. The tests of the ITER conductor samples are ...

IEEE Institute of Electrical and Electronics Engineers2016

Completion of the Commissioning of the EDIPO Test Facility

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov, Stephen Alfred March, Kamil Sedlák

The main coils of the new European DIPOle (EDIPO) test facility, which is able to provide a background magnetic field up to 12.35 T, were commissioned at the Center for Research in Plasma Physics in July 2013. A field homogeneity of +/-1% was achieved over ...

IEEE Institute of Electrical and Electronics Engineers2016

EDIPO: The Test Facility for High-Current High-Field HTS Superconductors

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov, Davide Uglietti, Kamil Sedlák

The commissioning of the European DIPOle (EDIPO) test facility at the Center for Research in Plasma Physics in Villigen was completed in Spring 2015, and the first test of a 60-kA/12-T high-temperature superconductor (HTS) was carried out in June 2015. Use ...

IEEE Institute of Electrical and Electronics Engineers2016

Performance evolution of 60kA HTS cable prototypes in the EDIPO test facility

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov, Davide Uglietti, Kamil Sedlák

During the first test campaign of the 60 kA HTS cable prototypes in the EDIPO test facility, the feasibility of a novel HTS fusion cable concept proposed at the EPFL Swiss Plasma Center (SPC) was successfully demonstrated. While the measured DC performance ...

2016

Overview of progress on the EU DEMO magnet system design

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov, Elena Gaio, Kamil Sedlák

The DEMO reactor is expected to be the first application of fusion for electricity generation in the near future. To this aim conceptual design activities are progressing in Europe (EU) under the lead of the EUROfusion Consortium in order to drive on the d ...

IEEE Institute of Electrical and Electronics Engineers2016

Commissioning of HTS Adapter and Heat Exchanger for Testing of High Current HTS Conductors

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov, Davide Uglietti, Kamil Sedlák

In the EDIPO test facility, superconducting cables with a current carrying capacity up to 100 kA can be tested in a background field of 12.5 T. A NbTi transformer, operated at ???4.5 K, provides the sample current of up to 100 kA. The high-temperature supe ...

IEEE Institute of Electrical and Electronics Engineers2016

Winding Pack Proposal for the TF and CS Coils of European DEMO

Rainer Wesche, Pierluigi Bruzzone, Kamil Sedlák

The design of the European DEMO, i.e., the future fusion tokamak planned after ITER, is being developed under the coordination of the EUROfusion Consortium. This paper reports the design optimization of the toroidal field (TF) winding pack and its correspo ...

IEEE Institute of Electrical and Electronics Engineers2016

Development of HTS Conductors for Fusion Magnets

Rainer Wesche, Pierluigi Bruzzone, Davide Uglietti

In view of the development of cables for next-generation fusion reactors, research activities are carried out on all HTS materials available from industrial production. Preliminary design of a react and wind cable using Bi-2212 wires is carried out, inspir ...

IEEE Institute of Electrical and Electronics Engineers2015

DC Performance Results Versus Assessment of ITER Main Busbar NbTi Conductors

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov, Kamil Sedlák, Bo Liu

Four ITER main busbar (MB) conductor samples were tested in the SULTAN test facility (Centre de Recherches en Physique des Plasma, Ecole Polytechnique Fédérale de Lausanne, Switzerland) between 2011 and 2013. The MB conductors are NbTi-based cable-in-condu ...

IEEE Institute of Electrical and Electronics Engineers2015

Strain Management in HTS High Current Cables

Rainer Wesche, Pierluigi Bruzzone, Davide Uglietti

The best performing HTS conductors are available in the form of thin tapes with operating current in the range of 200 A at the operating conditions. To realize conductors with high current carrying capability, in the range of several tens of kA, a large nu ...

IEEE Institute of Electrical and Electronics Engineers2015

Test of 60 kA coated conductor cable prototypes for fusion magnets

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov, Davide Uglietti, Kamil Sedlák

Coated conductors could be promising materials for the fabrication of the large magnet systems of future fusion devices. Two prototype conductors (flat cables in steel conduits), each about 2 m long, were manufactured using coated conductor tapes (4 mm wid ...

2015

Design and Strand Tests of a Fusion Cable Composed of Coated Conductor Tapes

Rainer Wesche, Pierluigi Bruzzone, Davide Uglietti

The design of a flat cable suitable for future fusion reactors has been carried out. The cable consists of twisted round strands, which are composed of tapes stacked between copper profiles. According to calculations, the strand twist pitch and the cable t ...

IEEE Institute of Electrical and Electronics Engineers2014

Page 2 sur 5