Publications de Ciro Calzolaio

Analysis of the CICC Performance Through the Measurement of the Thermal Strain Distribution of the Nb-3 Sn Filaments in the Cable Cross Section

The knowledge of the thermal strain distribution of the Nb3Sn filaments in a cable in conduit conductor (CICC) cross section is a key parameter in understanding the cable performance evolution when it undergoes electromagnetic (EM) cyclic loading. A CICC i ...

IEEE Institute of Electrical and Electronics Engineers2014

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

The relationship between the n-value and applied strain

Félix Roth, Pierluigi Bruzzone, Ciro Calzolaio

The most popular fit for describing the volt-ampere characteristic of a superconducting material is a power law with exponent n. Usually for a Nb3Sn wire the n-index is parametrized as a function of the sole critical current (I-c). An experiment to determi ...

Iop Publishing Ltd2013

Irreversible Degradation in Nb3Sn Cable in Conduit Conductors

Ciro Calzolaio

One of the biggest goals for the international thermonuclear experimental reactor (ITER) is the steady state operation. For this reason all its coils will be superconducting and Nb3Sn material is used for both the toroidal field (TF) and the central soleno ...

EPFL2013

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

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

Pierluigi Bruzzone, Boris Stepanov, Ciro Calzolaio, Davide Uglietti

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

Measurement of Tc distribution in NbSn CICC

Pierluigi Bruzzone, Ciro Calzolaio, Davide Uglietti

Knowledge of the actual Nb3Sn filaments' thermal strain, epsilon(th), in a cable-in-conduit conductor (CICC) is essential to predict the CICC performance in operation starting from the strand scaling laws for the critical current density J(c)(B, T, epsilon ...

SUST 20122012

Test of ITER conductors in SULTAN: an update

Rainer Wesche, Pierluigi Bruzzone, Boris Stepanov, Martin Vogel, Ciro Calzolaio

The ITER Toroidal Field (TF) conductor qualification phase has been carried out by testing short sample prototype conductors in the SULTAN test facility. This phase, started in 2007, has been substantially completed after minor adjustment of the conductor ...

2011