Affiliations: [a] Fusion For Energy, Barcelona, Spain | [b] Dipartimento di Ingegneria dell'Informazione, Seconda
Univesitá di Napoli, Aversa (CE), Italy
Correspondence:
[*]
Corresponding author: Alessandro Formisano, Dipartimento di
Ingegneria dell'Informazione, Seconda Univesitá di Napoli, Via Roma 29,
I-81031, Aversa (CE), Italy. Tel.: +39 081 5010342; Fax: +39 081 5037042;
E-mail: alessandro.formisano@unina2.it
Abstract: Due to unavoidable tolerances in components construction and
assembly, the actual magnetic field in Tokamak devices differs from the nominal
one. The experimental studies nowadays available indicate a strong impact of
the error fields on the plasma stability in next generation, large size,
devices. Therefore, a careful preliminary analysis aimed at evaluating the
impact of possible error field sources, to define tolerance ranges and assess
the effect of current feeders, was envisaged before realization of ITER
reactor. The paper discusses the tools used to perform ITER tolerance analysis,
from the viewpoints of two possible approaches to tolerancing, which are
statistical analysis and worst case analysis. The two methods aim to get
different characterizations of devices performance, and a critical comparison
of drawbacks and advantages of both methods is reported.
