QUENCH PROTECTION AND DESIGN OF HIGH-FIELD SUPERCONDUCTING ACCELERATOR MAGNETS: THE ROLE OF DYNAMIC EFFECTS ON THE DIFFERENTIAL INDUCTANCE
Tesi di Dottorato
Data di Pubblicazione:
2017
Citazione:
QUENCH PROTECTION AND DESIGN OF HIGH-FIELD SUPERCONDUCTING ACCELERATOR MAGNETS: THE ROLE OF DYNAMIC EFFECTS ON THE DIFFERENTIAL INDUCTANCE / V. Marinozzi ; relatore: M. Sorbi. DIPARTIMENTO DI FISICA, 2017 Jan 30. 29. ciclo, Anno Accademico 2016. [10.13130/marinozzi-vittorio_phd2017-01-30].
Abstract:
Quench protection is one of the most challenging aspects during the
design of high-field superconducting accelerator magnets. Quench is
the superconducting-to-resistive transition of a superconducting
magnet, during which the large stored energy is dissipated into heat in
a small region, which warms up. Quench cannot be avoided, therefore
each superconducting magnet needs a quench protection system.The inductance plays an important role during a quench: it is important
to discharge the current flowing within the coils of the magnet as soon
as possible, in order to reduce the temperature. In order to perform a
reliable protection study, it is therefore important to model the
inductance in the correct way. This work shows how the inductance in
superconducting magnets is connected to transient effects typical of
the superconductivity. An electromagnetic model is presented, and
compared with experimental data. Moreover, the quench protection
and the design of accelerator magnets is reported, with emphasis on
the role of the inductance.This work is an important further step for the protection study of
superconducting magnets, because it allows to understand some
experimental evidences which could not be explained before. It is one
of the first attempts of considering the inductance as a dynamic
quantity during a quench, and it allows performing more reliable and
realistic protection studies.
Tipologia IRIS:
Tesi di dottorato
Elenco autori:
V. Marinozzi
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