Publications de Stephen Alfred March

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

Twin-box ITER joints under electromagnetic transient loads

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

The ITER Toroidal Field (TF) coil winding packs are designed to be wound in double-pancakes. The twin-box joint provides the electrical pancake-to-pancake connection between the two Nb3Sn 68 kA conductors and electrical coil-to-bus bar connection between t ...

Elsevier Science Sa2015

Applicability of Non-Destructive Examination to Iter TF Joints Nb3Sn

Pierluigi Bruzzone, Stephen Alfred March

The Iter TF joints are of a twin-box design and the critical parameters of the overall resistance are 1) the contact between cable and termination, and 2) the resistance between two terminations. This paper describes applicability of non-destructive examin ...

IEEE Institute of Electrical and Electronics Engineers2015

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

Operational experience in the use of 18 kA HTS current leads for Edipo

Rainer Wesche, Pierluigi Bruzzone, Stephen Alfred March

In spring 2013, the Edipo facility of CRPP was commissioned. The dipole is powered via two 18 kA HTS current leads, designed and manufactured at CRPP. As part of the Edipo commissioning framework, the operational parameters of the leads were implemented in ...

Iop Publishing Ltd2014

Results of the Test of Industrially Manufactured HTS Current Leads With Novel Design Features

Rainer Wesche, Pierluigi Bruzzone, Martin Vogel, Stephen Alfred March

In the framework of a collaboration, CRPP (Centre de Recherches en Physique des Plasmas) and WEKA AG have developed high-temperature superconductor (HTS) current leads for currents in the range of 3 to 30 kA, which are suitable for industrial fabrication. ...

IEEE Institute of Electrical and Electronics Engineers2014

Commissioning of the Main Coil of the EDIPO Test Facility

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov, Martin Vogel, Markus Jenni, Giancarlo Croari, Stephen Alfred March, Davide Uglietti

The EDIPO test facility is erected at CRPP Villigen with the aim of providing a flexible, high field test bed for high current force flow superconductors. The EDIPO main coil is a tilted-head race-track pair wound by a graded Nb3Sn cable-in-conduit conduct ...

IEEE Institute of Electrical and Electronics Engineers2014

Prospects for the use of high-T-c superconductors in fusion magnets and options for their test in SULTAN

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

In the last few years, the critical current densities of long commercially available REBa2Cu3O7-x (RE-123, where RE represents Y or a rare earth element) coated conductors have reached values of 250 A/cm-width at 77K and zero applied field. Even higher val ...

Elsevier Science Sa2013

Results of the TFEU6 Sample Tested in SULTAN

Pierluigi Bruzzone, Boris Stepanov, Stephen Alfred March

This paper presents the results of the latest European Conductor Performance Qualification Sample for the ITER toroidal field coils. The standard qualification test was performed in the SULTAN facility at CRPP. The sample consisted of two 3.5-m lengths of ...

IEEE Institute of Electrical and Electronics Engineers2013

Operation and Test Results From the SULTAN Test Facility

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov, Martin Vogel, Ciro Calzolaio, Stephen Alfred March

In the period between August 2010 and August 2011 the SULTAN test facility has been continuously operated, with over one dozen test campaigns. Among the ITER conductors, five Toroidal Field (TF) samples, two Central Solenoid (CS) samples and four NbTi samp ...

Ieee-Inst Electrical Electronics Engineers Inc2012

The EDIPO Project: Status and Outlook

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov, Martin Vogel, Giancarlo Croari, Stephen Alfred March

The aim of this paper is to present an up to date review of the status of the European DIPOle (EDIPO) project-whose objective is to build a new facility to perform both DC and AC tests of large force flow superconductor samples in high magnetic background ...

IEEE-Inst Electrical Electronics Engineers Inc2012

Development of HTS current leads for industrial fabrication

Rainer Wesche, Pierluigi Bruzzone, Martin Vogel, Stephen Alfred March

High temperature superconductor current leads have been demonstrated to provide cryogenic savings compared to conventional copper leads. The applicability of HTS current leads to industrial fabrication is now a possibility. CRPP and WEKA AG are collaborati ...

Ieee-Inst Electrical Electronics Engineers Inc2012

Design and manufacture of 20 kA HTS current leads for a hybrid magnet system

Rainer Wesche, Pierluigi Bruzzone, Martin Vogel, Stephen Alfred March

A new series connected 25 T hybrid magnet system is being developed by the Helmholtz Zentrum Berlin (HZB) for neutron scattering experiments. In collaboration with CRPP, high temperature superconducting (HTS) current leads have been developed for the power ...

Elsevier Science Bv2012

Development of magnet technologies for HTS insert coils

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov, Stephen Alfred March, Davide Uglietti, Natalia Hanna Glowa

An existing Nb3Sn laboratory magnet generating a magnetic field of 12 T is intended to be upgraded to 16 T by means of the use of a high temperature superconductor (HTS) insert coil. An outline design of the HTS insert coil is presented. In the design, the ...

Elsevier Science Bv2012

EDIPO quench detection system: concept and development

Pierluigi Bruzzone, Giancarlo Croari, Stephen Alfred March, Roland Felder

EDIPO is the new 12.5 T superconducting test facility that is being installed at CRPP in Villigen, Switzerland. It will be placed beside the existing test facility SULTAN. The main purpose of both facilities is testing samples for the ITER project. EDIPO w ...

IEEE-Inst Electrical Electronics Engineers Inc2012

Test results of the 18 kA EDIPO HTS current leads

Félix Roth, Rainer Wesche, Pierluigi Bruzzone, Manuel Holenstein, Martin Vogel, Markus Jenni, Stephen Alfred March, Roland Felder

For the new test facility EDIPO (European DIPOle), to be hosted by CRPP, two 18 kA HIS current leads were manufactured and successfully tested. The HTS module, made of AgMgAu/Bi-2223 tapes, is cooled only by heat conduction to the cold end, while the coppe ...

2011