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Boris Stepanov

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Related publications (113)

Page 3 of 6

Recent Tests of the ITER Conductors and Highlights in Nb3Sn Conductors Behavior

Pierluigi Bruzzone, Kamil Sedlák, Boris Stepanov, Rainer Wesche

The tests of the ITER Toroidal Field (TF) full length conductors (hundreds of meters, production phase IN) were started at the end of year 2012 and were performed accordingly to the firmly specified test program. The TF conductors produced by the ITER dome ...

IEEE Institute of Electrical and Electronics Engineers2014

Anomalies on V-I characteristic of NbTi cable-in-conduit conductors

Pierluigi Bruzzone, Boris Stepanov

Two kinds of anomaly, observed in the Volt-Ampere Characteristic (VAC) of large NbTi cable-in-conduit conductors (CICC) are discussed. In one case, the wavy behavior of the VAC close to the current sharing range is explained with oscillations of the coolin ...

2005

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

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

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

Central solenoid winding pack design for DEMO

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

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

Twin-box ITER joints under electromagnetic transient loads

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

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

A New Cabled Stabilizer for the Nb3Sn React&Wind DEMO Conductor Prototype

Pierluigi Bruzzone, Boris Stepanov, Kamil Sedlák, Vincenzo D'Auria, Mithlesh Kumar

A Nb3Sn based, React&Wind flat cable, named RW2, was developed in the past three years at the Swiss Plasma Center in the scope of the EUROfusion conceptual studies for DEMO. The test results presented earlier proved an excellent DC performance, but large e ...

IEEE Institute of Electrical and Electronics Engineers2021

Test Results of a 100 kA NbTi CICC

Pierluigi Bruzzone, Boris Stepanov, Rainer Wesche

For the secondary winding of the flux pump (superconducting transformer) of the EDIPO test facility at CRPP Villigen, a NbTi cable-in-conduit conductor (CICC) was designed at CRPP and procured at the industry. From a left section of the CICC a SULTAN sampl ...

Ieee-Inst Electrical Electronics Engineers Inc2012

Test Result of a Full-Size Nb3Sn Conductor Developed for the ITER TF Coils

Pierluigi Bruzzone, Boris Stepanov

The Japan Atomic Energy Agency (JAEA) developed ITER TF Nb3Sn conductors that fulfill ITER requirements and has commenced fabricating the conductors to be used in the ITER TF coils. As a qualification of conductor fabrication, two full-size conductor sampl ...

IEEE Institute of Electrical and Electronics Engineers2011

Optimization of Heat Treatment of Japanese Nb3Sn Conductors for Toroidal Field Coils in ITER

Pierluigi Bruzzone, Kamil Sedlák, Boris Stepanov

The optimization of the heat treatment of Nb3Sn conductors for toroidal field coils in ITER was attempted to improve the current sharing temperatures (T-CS). Using the strand, we chose the pattern at 570 degrees C for 250 h and 650 degrees C for 100 h as t ...

IEEE Institute of Electrical and Electronics Engineers2014

Test results of a large size, forced flow Nb3Sn conductor, based on a design alternative to the cable-in-conduit

Pierluigi Bruzzone, Rainer Wesche, Boris Stepanov

An R&D program at CRPP investigates the design of large size Nb3Sn conductors, with the aim to improve the effectiveness and hence the cost of large size, force flow conductors. A design based on a solder filled flat cable, by react wind method, is selecte ...

IEEE Institute of Electrical and Electronics Engineers2007

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

Pierluigi Bruzzone, Kamil Sedlák, Boris Stepanov, Rainer Wesche

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

DC performances of ITER NbTi conductors: Models vs. measurements

Pierluigi Bruzzone, Rainer Wesche, Boris Stepanov

Within the R&D program on the International Thermonuclear Experimental Reactor (ITER) Poloidal Field (PF) coils, a full size conductor sample was tested in the SULTAN facility (CRPP Villigen, Switzerland). This sample is composed of two straight ITER-like ...

IEEE Institute of Electrical and Electronics Engineers2005

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

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

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 ...

IOP Publishing Ltd2016

AC and Mechanical Loss Analysis of the ITER PF RF SULTAN Samples

Pierluigi Bruzzone, Boris Stepanov

Analysis of the AC and mechanical losses of PF RF ITER SULTAN sample test results has been performed. Measurements were provided by the gas flow colorimetric method before and after cyclic mechanical loads. The mechanical loss investigation was carried out ...

IEEE Institute of Electrical and Electronics Engineers2016

DC and transient current distribution analysis from self-field measurements on ITER PFIS conductor

Boris Stepanov

Current reconstruction in cable-in-conduit conductors (CICC) cables is a crucial issue to determine cables performance in working conditions, and must be performed using inverse problem approaches as direct measurement is not feasible. The current distribu ...

2005

The performance test and analysis of ITER Main and Correction Busbar conductor

Pierluigi Bruzzone, Boris Stepanov, Yu Wu

The first ITER Main Busbar (MBCN1) and Correction Busbar (CBCN1) conductor samples were manufactured in ASIPP and tested in the SULTAN facility. This paper introduces the sample manufacture, including strand, cabling, jacketing and sample preparation, and ...

Elsevier Science Sa2013

Conductor Performance Qualification of TFKO3 Sample for ITER TF Magnet

Pierluigi Bruzzone, Boris Stepanov, Kyungjin Kim

Two identical conductor samples were fabricated from 110 m length cable prepared for qualification of the manufacturing process for Phase II procurement of ITER TF conductor. Superconducting strand characteristics, cabling specifications, and the stainless ...

IEEE-Inst Electrical Electronics Engineers Inc2012

A low cost joint for the ITER PF coils, design and test results

Pierluigi Bruzzone, Boris Stepanov

The Poloidal Field (PF) coils of the International Thermonuclear Experimental Reactor (ITER) are designed using of NbTi cable-in-conduit conductors carrying a current up to 45 kA. Each PF coil consists of several modules Wound in double pancakes. Joints co ...

2005

Effect of cyclic loading and conductor layout on contact resistance of full-size ITER PFCI conductors

Pierluigi Bruzzone, Boris Stepanov

An evolution of the contact resistances (R-c) of two full-size ITER (International Thermonuclear Experimental Reactor) cable-in-conduit conductors (CICC) aimed for the Poloidal Field Conductor Insert (PFCI) was studied in the Twente Cryogenic Press. The co ...

IEEE Institute of Electrical and Electronics Engineers2005

Analysis of Internal-Tin Nb3Sn Conductors for ITER Central Solenoid

Pierluigi Bruzzone, Kamil Sedlák, Boris Stepanov

Japan Atomic Energy Agency (JAEA) is procuring 100% of the ITER Central Solenoid (CS) conductors. The CS conductor is required to maintain the performance under 60000 pulsed electromagnetic cycles. JAEA tested two internal-tin Nb3Sn conductors for the CS a ...

IEEE Institute of Electrical and Electronics Engineers2015