Articolo in rivista, 2022, ENG, 10.1109/TPS.2022.3168341

Strategy for Vacuum Insulation Tests of MITICA 1 MV Electrostatic Accelerator

Chitarin G.; Kojima A.; Boldrin M.; Luchetta A.; Marcuzzi D.; Zaccaria P.; Zanotto L.; Toigo V.; Aprile D.; Marconato N.; Patton T.; Pilan N.; Barbato P.; Berton G.; Breda M.; Dan M.; Fincato M.; Lotto L.; Rigoni-Garola A.; Sartori E.; Tollin M.; Valente M.; Grando L.; Pomaro N.; De Lorenzi A.; Hiratsuka J.; Ichikawa M.; Kisaki M.; Murayama M.; Saquilayan G.M.; Tobari H.; Umeda N.; Watanabe K.; Kashiwagi M.

Department of Management and Engineering (DTG), University of Padova, Vicenza, Italy; Consorzio RFX (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA), Padova, Italy; National Institutes for Quantum and Radiological Science and Technology (QST), Naka, Ibaraki, Japan; CNR-Istituto per la Scienza e Tecnologia dei Plasmi (ISTP), Sede di Padova, Italy.

The electrical insulation of the Megavolt ITER Injector and Concept Advancement (MITICA) beam source (BS) at 1 MV in vacuum is a challenging issue, which could not be fully addressed so far on the basis of experimental results and of theoretical models available in literature. A specific high-voltage (HV) test campaign is being prepared to validate and optimize the voltage holding capability of the BS insulation under realistic conditions, using full-size mockup electrodes reproducing in detail the geometry of the BS and accelerator. The proposed test strategy will address both the single-gap and the multistage insulation, so as to obtain a verification of voltage holding at 1 MV before the installation of the real components. This approach is intended to reduce the risk related to the HV insulation at 1 MV and, if necessary, to allow the development of effective corrections. In this article, the test motivations and requirements are defined, and the electrode implementation and diagnostic setup are described. Finally, the test configurations and the experimental procedure are discussed.

IEEE transactions on plasma science 50 (9), pp. 2755–2762

Keywords

High-voltage holding, neutral beam injector (NBI)

CNR authors

Pomaro Nicola, De Lorenzi Antonio, Fincato Michele, Grando Luca, Luchetta Adriano Francesco, Toigo Vanni, Zaccaria Pierluigi, Barbato Paolo

CNR institutes

ISTP – Istituto per la Scienza e Tecnologia dei Plasmi

ID: 466728

Year: 2022

Type: Articolo in rivista

Creation: 2022-05-04 11:08:20.000

Last update: 2023-07-04 16:34:04.000

External IDs

CNR OAI-PMH: oai:it.cnr:prodotti:466728

DOI: 10.1109/TPS.2022.3168341

IEEE Xplore digital library: 9765788

Scopus: 2-s2.0-85129597540

ISI Web of Science (WOS): 000791735000001