title: Preliminary design of electrostatic sensors for MITICA beam line components.
abstract: Megavolt ITER Injector and Concept Advancement, the full-scale prototype of ITER neutral beam injector, is under construction in Italy. The device will generate deuterium negative ions, then accelerated and neutralized. The emerging beam, after removal of residual ions, will be dumped onto a calorimeter. The presence of plasma and its parameters will be monitored in the components of the beam-line, by means of specific electrostatic probes. Double probes, with the possibility to be configured as Langmuir probes and provide local ion density and electron temperature measurements, will be employed in the neutralizer and in the residual ion dump. Biased electrodes collecting secondary emission electrons will be installed in the calorimeter with the aim to provide a horizontal profile of the beam.
authors.affiliation: Consorzio RFX, Associazione EURATOM-ENEA sulla Fusione, 35127 Padova, Italy.
authors.forename: S
authors.initials: S
authors.lastname: Spagnolo
authors.affiliation: Consorzio RFX, Associazione EURATOM-ENEA sulla Fusione, 35127 Padova, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Spolaore
authors.affiliation: Consorzio RFX, Associazione EURATOM-ENEA sulla Fusione, 35127 Padova, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Dalla Palma
authors.affiliation: Consorzio RFX, Associazione EURATOM-ENEA sulla Fusione, 35127 Padova, Italy.
authors.forename: R
authors.initials: R
authors.lastname: Pasqualotto
authors.affiliation: Consorzio RFX, Associazione EURATOM-ENEA sulla Fusione, 35127 Padova, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Sartori
authors.affiliation: Consorzio RFX, Associazione EURATOM-ENEA sulla Fusione, 35127 Padova, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Serianni
authors.affiliation: Consorzio RFX, Associazione EURATOM-ENEA sulla Fusione, 35127 Padova, Italy.
authors.forename: P
authors.initials: P
authors.lastname: Veltri