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Boris Stepanov

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Related publications (113)

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Collective Flux Jumps observed in the Operation of the EDIPO Magnet

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

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

Preliminary Performance Test Results of First CICC From Korea Destined for an ITER TF Magnet

Pierluigi Bruzzone, Boris Stepanov, Kyungjin Kim

The Republic of Korea is participating in the ITER project to construct and operate the ITER tokamak for the purpose of demonstrating the feasibility of fusion power. ITER Korea, the implementing agency for the Republic of Korea that is procuring items for ...

IEEE Institute of Electrical and Electronics Engineers2013

Test Results of RF ITER TF Conductors in the SULTAN Test Facility

Pierluigi Bruzzone, Boris Stepanov

The cable-in-conduit-conductors (CICC) for the ITER Toroidal Field (TF) Coils are tested in the Sultan test facility in order to estimate their AC and DC performances under operating conditions. The tests are carried out on different stages of conductor pr ...

IEEE Institute of Electrical and Electronics Engineers2014

Overview of Performance Test of Korean CICCs for ITER TF Magnet

Pierluigi Bruzzone, Boris Stepanov

The Korean Domestic Agency (KODA) for the International Thermonuclear Experimental Reactor (ITER) project has taken the responsibility of the procurement of cable-in-conduit conductors for the ITER toroidal field magnet. While procuring 27 conductor unit l ...

IEEE Institute of Electrical and Electronics Engineers2016

Conductor Performance of CCCN3, CCCN4 and CCCN5 Samples for ITER CC Coils

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

The conductor for the ITER Correction Coils (CC) is manufactured in China and is tested in the SULTAN facility. The third China CC conductor for the qualification SULTAN test sample (CCCN3) was prepared from a 200 m long CC conductor unit length (Phase II) ...

IEEE Institute of Electrical and Electronics Engineers2016

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

Performance Analysis of Mass-Produced Nb3Sn Conductor for Central Solenoid in ITER

Pierluigi Bruzzone, Kamil Sedlák, Boris Stepanov

The performance of two mass-produced Nb3Sn conductors for the ITER central solenoids was tested for the first timmass-produced Nb3Sn conductorse. One was cut from the forward end of an 80-m-long conductor, and the other was cut from the forward end of a 91 ...

IEEE Institute of Electrical and Electronics Engineers2016

Monitoring of the Thermal Strain Distribution in CICCs During the Cyclic Loading Tests in SULTAN

Pierluigi Bruzzone, Boris Stepanov, Ciro Calzolaio

A technique to measure in situ the behavior of the magnetic susceptibility vs. temperature, chi(T), for a cable-in-conduit-conductor (CICC) in the SULTAN test facility has been developed. The same kind of measurements are performed for the corresponding fr ...

IEEE Institute of Electrical and Electronics Engineers2013

Experimental and Analytical Approaches on JT-60SA TF Strand and TF Conductor Quality Control During Qualification and Production Manufacture Stages

Pierluigi Bruzzone, Boris Stepanov

In the framework of the JT-60SA project, aiming at upgrading the present JT-60U tokamak, Europe as part of its in-kind contribution within the Broader Approach agreement, will provide the full Toroidal Field (TF) magnet system. For this purpose, Fusion for ...

IEEE Institute of Electrical and Electronics Engineers2013

Operation and Test Results From the SULTAN Test Facility

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

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

Test results of the ITER PF insert conductor short sample in SULTAN

Pierluigi Bruzzone, Rainer Wesche, Boris Stepanov

A short sample of the NbTi cable-in-conduit conductor (CICC) manufactured for the ITER PF insert coil has been tested in the SULTAN facility at CRPP. The short sample consists of two paired conductor sections, identical except for the sub-cable and outer w ...

IEEE Institute of Electrical and Electronics Engineers2005

Examination of Japanese Mass-Produced Nb3Sn Conductors for ITER Toroidal Field Coils

Pierluigi Bruzzone, Boris Stepanov

The performances of six Nb3Sn conductors for the ITER Toroidal Field coils were tested. Four of them showed similar degradation rates of their current sharing temperatures T-cs over 1,000 electromagnetic cycles. By contrast, two of them showed sharp T-cs d ...

IEEE-Inst Electrical Electronics Engineers Inc2012

Analysis of DC properties and current distribution in TFAS ITER conductor samples using high J(C) Nb3Sn advanced strands

Pierluigi Bruzzone, Boris Stepanov

Two full-size conductor samples using advanced Nb3Sn strands were tested in the SULTAN facility in 2005-2006 within (I,B,T) ranges close to the ITER operating conditions (B-MAX similar to 12 T, T similar to 5 K). Each sample includes two conductor legs, co ...

IEEE Institute of Electrical and Electronics Engineers2007

Results of contact resistance distribution in NbTi and Nb3SnITER conductor termination

Pierluigi Bruzzone, Boris Stepanov

The contact resistance distribution among the current-carrying elements of three ITER conductor terminations is measured in the JORDI (JOint Resistance DIstribution) test facility at CRPP. One sample is based on Nb3Sn strands, the other two are NbTi cable- ...

IEEE Institute of Electrical and Electronics Engineers2007

Status of Conductor Qualification for the ITER Central Solenoid

Pierluigi Bruzzone, Boris Stepanov

The ITER central solenoid (CS) must be capable of driving inductively 30 000 15 MA plasma pulses with a burn duration of 400 s. This implies that during the lifetime of the machine, the CS, comprised of six independently powered coil modules, will have to ...

IEEE Institute of Electrical and Electronics Engineers2013

Results of the TF conductor performance qualification samples for the ITER project

Pierluigi Bruzzone, Boris Stepanov, Kyungjin Kim

The performance of the toroidal field (TF) magnet conductors for the ITER machine are qualified by a short full-size sample (4 m) current sharing temperature (T-cs) test in the SULTAN facility at CRPP in Villigen, Switzerland, using the operating current o ...

Iop Publishing Ltd2012

Testing of RF 100 m TF Qualification Conductor in the SULTAN Test Facility

Pierluigi Bruzzone, Boris Stepanov

A conductor for ITER toroidal field (TF) coils is the cable-in-conduit conductor (CICC) type, which is made of Nb3Sn superconducting strands encased in a stainless steel tubular jacket. A 120-m-long prototype has been designed in accordance with ITER requi ...

IEEE Institute of Electrical and Electronics Engineers2013

Inter-Layer Joint for the TF Coils of DEMO-Design and Test Results

Pierluigi Bruzzone, Kamil Sedlák, Boris Stepanov

In summer 2015, a new reference baseline is issued for the DEMO EUROfusion tokamak. Thereafter, the toroidal field (TF) coils have been updated with the new layout of the react-and-wind conductor proposed by the Swiss Plasma Center (SPC). Each TF coil cons ...

IEEE Institute of Electrical and Electronics Engineers2018

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

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

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

Test of 60 kA coated conductor cable prototypes for fusion magnets

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

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 ...

IOP Publishing Ltd2015