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Boris Stepanov

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Publications associées (113)

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

Pierluigi Bruzzone, Boris Stepanov, Rainer Wesche, 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

Reconstruction of current unbalance in full-size ITER NbTiCICC by self-field measurements

Boris Stepanov

Methods have been developed to study the distribution of the transport current among the strand bundles of cable-in-conduit conductors (CICC) by using self-field measurements with Hall probe arrays. The unbalance in the transport current is mainly caused b ...

IEEE Institute of Electrical and Electronics Engineers2005

The EDIPO Project: Status and Outlook

Pierluigi Bruzzone, Boris Stepanov, Rainer Wesche, 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

Design and Characterization of the Interlayer Joint Between Low-Field Nb3Sn Conductors of a Layer Wound DEMO TF Coil

Pierluigi Bruzzone, Boris Stepanov, Kamil Sedlák, Mithlesh Kumar

In the frame of the conceptual design studies for the Toroidal Field (TF) coils of DEMO, a solution based on a layer-wound magnet, rectangular-shaped Cable-in-Conduit conductors and W&R manufacturing approach, is being developed. The feasibility and perfor ...

IEEE Institute of Electrical and Electronics Engineers2021

Commissioning of the Main Coil of the EDIPO Test Facility

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

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

Overview of progress on the EU DEMO magnet system design

Pierluigi Bruzzone, Kamil Sedlák, Boris Stepanov, Rainer Wesche

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

In situ Tc measurements of cable in conduit conductors via an inductive method

Pierluigi Bruzzone, Boris Stepanov, Davide Uglietti, Ciro Calzolaio

The measurement of the actual thermal strain, epsilon th, in a cable in conduit conductor (CICC) of Nb3Sn is of paramount importance to predict the CICC performance in operation starting from the strand scaling laws for the critical current density J(c)(B, ...

IEEE-Inst Electrical Electronics Engineers Inc2012

The performance test and analysis of the third and fourth China PF conductor for ITER

Pierluigi Bruzzone, Boris Stepanov, Yu Wu

The third Chinese PF conductor for ITER PF5 (PFCN3) and the fourth Chinese PF conductor for ITER PF2/3/4 (PFCN4) conductor in Phase II were manufactured in ASIPP and tested in the SULTAN facility. This paper introduces the PFCN3 and PFCN4 sample manufactur ...

Elsevier2014

Test results of a small size CICC with advanced Nb3Sn strands

Pierluigi Bruzzone, Rainer Wesche, Boris Stepanov

In the scope of the design activities for a 12.5 T dipole magnet, a short length of cable-in-conduit conductor (CICC) with steel jacket was prepared in spring 2005 as a pre-prototype of the high field dipole conductor. The small, rectangular conductor uses ...

IEEE Institute of Electrical and Electronics Engineers2006

Conductor Performance of TFCN4 and TFCN5 Samples for ITER TF Coils

Pierluigi Bruzzone, Kamil Sedlák, Boris Stepanov, Yu Wu, Fang Liu

The fourth China TF conductor sample (TFCN4) for Phase II, the left leg of the fifth China TF conductor sample (TFCN5) for Phase III, as well as the right leg of the TFCN5 conductor for Phase IV, were made of the WST strands, cabled by Baosheng, jacketed a ...

IEEE Institute of Electrical and Electronics Engineers2014

SULTAN test facility: Summary of recent results

Pierluigi Bruzzone, Kamil Sedlák, Boris Stepanov

The test campaigns of the ITER conductors in the SULTAN test facility re-started in December 2011 after three months break. The main focus of the activities is about the qualification tests of the Central Solenoid (CS) conductors, with three different samp ...

Elsevier Science Sa2013

Test Results and Investigation of Tcs Degradation in Japanese ITER CS Conductor Samples

Pierluigi Bruzzone, Boris Stepanov

Japan Atomic Energy Agency (JAEA) has fabricated and tested the four conductor samples composed of high performance strands manufactured by the bronze-route process for the ITER Central Solenoid (CS) conductor. The current sharing temperature (Tcs) electri ...

IEEE-Inst Electrical Electronics Engineers Inc2012

Qualification tests for ITER TF conductors in SULTAN

Pierluigi Bruzzone, Rainer Wesche, Boris Stepanov

From February 2007 to May 2008, 18 short length conductor sections have been tested in SULTAN for design verification and manufacturer qualification of the ITER Toroidal Field (TF) conductor. The test program is focussed on the current sharing temperature, ...

Elsevier2009

Analysis of transverse heat transfer coefficient in CICC's with central cooling channel

Pierluigi Bruzzone, Boris Stepanov

This paper describes a new method to determine the equivalent transverse heat transfer coefficient between the helium flow in the cable bundle and the flow in the central space of a CICC's with parallel cooling channel. The method is based on the analysis ...

2006

Tests and Analyses of Two TF Conductor Prototypes for JT-60SA

Pierluigi Bruzzone, Boris Stepanov

In the framework of the JT-60SA project, included inside the Broader Approach agreement, EU is expected to provide to JA the totality of the toroidal field (TF) magnet system. It consists in 18 coils, evenly shared for in-kind procurement between France an ...

IEEE2010

Test Results of Three Poloidal Field Superconducting Samples in SULTAN

Pierluigi Bruzzone, Rainer Wesche, Boris Stepanov

Superconductors for the ITER Poloidal Field Coils are large cable-in-conduit conductors (CICC) made of NbTi strands encased in a round-in-square stainless steel jacket. Three prototype conductor sections for poloidal field coils PF1/6, PF2/3/4 and PF5 have ...

IEEE-Inst Electrical Electronics Engineers Inc2012

Effect of conduit material on CiCC performance under high cycling loads

Pierluigi Bruzzone, Rainer Wesche, Boris Stepanov

Recent International Thermonuclear Experimental Reactor (ITER) Model Coils and tests on Nb-3 So Cable in Conduit Conductors (CICC) showed a significant and unexpected increase in the broadness of the transition to the normal state, resulting in degradation ...

IEEE Institute of Electrical and Electronics Engineers2005

Current sharing and AC loss measurements of cable-in-conduit conductor with Nb3Sn strands for the high field section of the series-connected hybrid outsert coil

Pierluigi Bruzzone, Boris Stepanov

IEEE2009

Test results of two ITER TF conductor short samples using high current density Nb3Sn strands

Pierluigi Bruzzone, Rainer Wesche, Boris Stepanov

Two short length samples have been prepared and tested in SULTAN to benchmark the performance of high current density, advanced Nb3Sn strands in the large cable-in-conduit conductors (CICC) for ITER. The cable pattern and jacket layout were identical to th ...

2006

Test results of contact resistance distribution in NbTi and Nb3Sn ITER conductor termination

Pierluigi Bruzzone, Boris Stepanov

2006