The AC loss measurements of the high temperature superconductor (HTS) cable prototype in the EDIPO test facility motivated detailed investigations of the loss contributions from the tape, strand and cable stages of the HTS fusion conductor design proposed ...

2017

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

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

TCV divertor upgrade for alternative magnetic configurations

Patrick Blanchard, Stefano Alberti, René Chavan, Basil Duval, Ambrogio Fasoli, Yves Martin, Jean-Marc Moret, Holger Reimerdes, Stefano Coda, Pierluigi Bruzzone, Marco Wischmeier, Duccio Testa, Benoît Labit, Christian Gabriel Theiler, Matthieu Toussaint, Davide Uglietti, Umar Sheikh, Nicola Vianello

The Swiss Plasma Center (SPC) is planning a divertor upgrade for the TCV tokamak. The upgrade aims at extending the research of conventional and alternative divertor configurations to operational scenarios and divertor regimes of greater relevance for a fu ...

Elsevier2017

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

Rainer Wesche, Pierluigi Bruzzone, Davide Uglietti

2017

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

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

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

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

LTS and HTS high current conductor development for DEMO

Pierluigi Bruzzone, Davide Uglietti, Kamil Sedlák

The large size of the magnets for DEMO calls for very large operating current in the forced flow conductor. A plain extrapolation from the superconductors in use for ITER is not adequate to fulfill the technical and cost requirements. The proposed DEMO TF ...

Elsevier Science Sa2015

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

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

Collective Flux Jumps observed in the Operation of the EDIPO Magnet

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

The tilted head race track coils of the EDIPO test facility are wound with cable-in-conduit conductors made by high current density Nb3Sn strands, Jc = 2400 A/mm2 at 12 T – 4.2 K. Since the commissioning of the coils, frequent voltage spikes were observed ...

IEEE Institute of Electrical and Electronics Engineers2014

Construction and test of a non-insulated insert coil using coated conductor tape

Rainer Wesche, Pierluigi Bruzzone, Davide Uglietti

A small coated conductor coil (central field 1 T at 200 A) was constructed and tested in order to evaluate the benefit and the possible disadvantages of non insulated, double pancake construction, in particular regarding quench protection. The insert coil ...

Iop Publishing Ltd2014

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