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Boris Stepanov

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Publications associées (118)

Analysis of the transverse heat transfer coefficients in a dual channel ITER-type cable-in-conduit conductor

Pierluigi Bruzzone, Boris Stepanov, Luca Bottura

2006

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

Pierluigi Bruzzone, Boris Stepanov

2006

Comparison of the DC performance of full- and sub-size NbTi cable-in-conduit conductors

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov

The DC performances of three full- and five sub-size NbTi cable-in-conduit conductors, measured in the SULTAN test facility, are compared. In general, the self-field effect was found to cause sudden take-offs at high currents. In most of the investigated c ...

IEEE Institute of Electrical and Electronics Engineers2006

Transverse load degradation in Nb3Sn cable-in-conduit conductors with different cable pattern

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov

2006

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

Pierluigi Bruzzone, Boris Stepanov, Luca Bottura

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

Analysis of critical electrical properties and current distribution of the first two full size conductor samples using Nb3Sn advanced strands developed for ITER

Félix Roth, Boris Stepanov

2006

Results of Buoyancy-gravity Effects in ITER Cable-in- Conduit Conductor with Dual Channel

Pierluigi Bruzzone, Boris Stepanov

2006

A critical review of coupling current losses for cable-in-conduct conductors

Pierluigi Bruzzone, Boris Stepanov

2005

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

Pierluigi Bruzzone, Boris Stepanov, Martin Vogel

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

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

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

Rainer Wesche, Pierluigi Bruzzone, 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

DC performance, AC loss and transient field stability of five medium size NbTi cable-in-conduit conductors with parametric variations

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov, Martin Vogel

Five medium size NbTi cable-in-conduit conductors with parametric variations in the cable layout were fabricated of three different strands to investigate their DC performance, AC loss behaviour and transient stability by means of the SULTAN facility. A co ...

2005

DC performances of ITER NbTi conductors: Models vs. measurements

Rainer Wesche, Pierluigi Bruzzone, 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

Effect of conduit material on CiCC performance under high cycling loads

Rainer Wesche, Pierluigi Bruzzone, 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

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

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

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

Results of thermo-siphon occurence in ITER cable-in-conduct conductor with dual channel

Pierluigi Bruzzone, Boris Stepanov

2005

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