title: Off-normal and failure condition analysis of the MITICA negative-ion accelerator.
abstract: The negative-ion accelerator for the MITICA neutral beam injector has been designed and optimized in order to reduce the thermo-mechanical stresses in all components below limits compatible with the required fatigue life. However, deviation from the expected beam performances can be caused by "off-normal" operating conditions of the accelerator. The purpose of the present work is to identify and analyse all the "off-normal" operating conditions, which could possibly become critical in terms of thermo-mechanical stresses or of degradation of the optical performances of the beam.
authors.affiliation: Consorzio RFX, (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA), Corso Stati Uniti 4, 35127 Padova, Italy.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Chitarin
authors.affiliation: Consorzio RFX, (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA), Corso Stati Uniti 4, 35127 Padova, Italy.
authors.forename: Piero
authors.initials: P
authors.lastname: Agostinetti
authors.affiliation: Consorzio RFX, (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA), Corso Stati Uniti 4, 35127 Padova, Italy.
authors.forename: Daniele
authors.initials: D
authors.lastname: Aprile
authors.affiliation: Consorzio RFX, (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA), Corso Stati Uniti 4, 35127 Padova, Italy.
authors.forename: Nicolò
authors.initials: N
authors.lastname: Marconato
authors.affiliation: Consorzio RFX, (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA), Corso Stati Uniti 4, 35127 Padova, Italy.
authors.forename: Diego
authors.initials: D
authors.lastname: Marcuzzi
authors.affiliation: Consorzio RFX, (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA), Corso Stati Uniti 4, 35127 Padova, Italy.
authors.forename: Gianluigi
authors.initials: G
authors.lastname: Serianni
authors.affiliation: Consorzio RFX, (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA), Corso Stati Uniti 4, 35127 Padova, Italy.
authors.forename: Pierluigi
authors.initials: P
authors.lastname: Veltri
authors.affiliation: Consorzio RFX, (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA), Corso Stati Uniti 4, 35127 Padova, Italy.
authors.forename: Pierluigi
authors.initials: P
authors.lastname: Zaccaria