HVPTF—The high voltage laboratory for the ITER Neutral Beam test facility

Lorenzi, A. De; Pilan, N.; Lotto, Lorella; Fincato, M.; Pesavento, G.; Gobbo, R.

doi:10.1016/j.fusengdes.2011.03.117

Cited by 24 publications

(7 citation statements)

References 3 publications

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“…The High Voltage Padova Test Facility (HVPTF) [87] is the ancillary laboratory of the NBTF, aimed to give support to the design of components subjected to high DC voltage in vacuum, to test different techniques of voltage conditioning, and to give experimental validation to voltage breakdown models.…”

Section: High Voltage Padova Test Facilitymentioning

confidence: 99%

The PRIMA Test Facility: SPIDER and MITICA test-beds for ITER neutral beam injectors

Toigo¹,

Piovan²,

Bello³

et al. 2017

New J. Phys.

157

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The ITER Neutral Beam Test Facility (NBTF), called PRIMA (Padova Research on ITER Megavolt Accelerator), is hosted in Padova, Italy and includes two experiments: MITICA, the full-scale prototype of the ITER heating neutral beam injector, and SPIDER, the full-size radio frequency negative-ions source. The NBTF realization and the exploitation of SPIDER and MITICA have been recognized as necessary to make the future operation of the ITER heating neutral beam injectors efficient and reliable, fundamental to the achievement of thermonuclear-relevant plasma parameters in ITER. This paper reports on design and R&D carried out to construct PRIMA, SPIDER and MITICA, and highlights the huge progress made in just a few years, from the signature of the agreement for the NBTF realization in 2011, up to now-when the buildings and relevant infrastructures have been completed, SPIDER is entering the integrated commissioning phase and the procurements of several MITICA components are at a well advanced stage.

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Section: High Voltage Padova Test Facilitymentioning

confidence: 99%

The PRIMA Test Facility: SPIDER and MITICA test-beds for ITER neutral beam injectors

Toigo¹,

Piovan²,

Bello³

et al. 2017

New J. Phys.

157

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“…To solve the design issue of the optimization of the electrode profiles for such a complex multielectrode-multivoltage electrostatic configuration, a R and D activity was carried out on the basis of the experiments performed at the JAEA Megavolt Test Facility [59], at the HVPTF [45] and of those reported in literature. The result of this work was the development of an innovative voltage breakdown predictive model, capable to identify, for any electrostatic configuration, the breakdown probability for a given applied voltage [60,61].…”

Section: Hv Holding In Vacuummentioning

confidence: 99%

Progress in the realization of the PRIMA neutral beam test facility

Toigo¹,

et al. 2015

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“…The HVPTF(described in [1] )isequipped witha cylindrical stainless steelVacuum Chamber,having 597 mmradius and 2450 mm length. AH 2 .…”

Section: Experimental Campains At the Hvptf To Study The Magneticmentioning

confidence: 99%

Effect of magnetic field on voltage holding in the MITICA electrostatic accelerator

Pilan

Chitarin

Lorenzi

et al. 2013

2013 IEEE 25th Symposium on Fusion Engineering (SOFE)

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MITICA is the complete full-scale prototype of a 17 MW Heating Neutral Beam Injector for ITER. This experimental device, presently under construction in Padova, includes a negative Ion Source (H- or D-), and an electrostatic Accelerator (1 MV, 40 A, 3600 s).\ud Voltage holding is recognized to be one of the most critical issues for the 1 MV accelerator operations, not only due to the complex multi-stage electrostatic accelerator structure, but also for the presence of magnetic field, which is necessary for deflecting the co-extracted and secondary electrons as early as possible, before they are accelerated. The required magnetic field is produced by a combination of several sources, such as permanent magnets and current-carrying conductors.\ud In order to avoid breakdowns, the design of the accelerator shall guarantee that electrostatic configuration and the pressure distribution correspond to an operating point located on the left branch of the Paschen curve, i.e. where the H2 gas pressure multiplied by the largest electrode distance (p.d) is always below a certain limit, which is 0.1-0.3 Pa.m. Actually, the presence of the magnetic field might reduce this limit, moving the left branch of the Paschen curve towards the operating point thus affecting voltage holding even during the conditioning phase.\ud In order to support the design of MITICA at low gas pressure and in the presence of magnetic field, an experimental campaign has been carried out at the High Voltage Padova Test Facility

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HVPTF—The high voltage laboratory for the ITER Neutral Beam test facility

Cited by 24 publications

References 3 publications

The PRIMA Test Facility: SPIDER and MITICA test-beds for ITER neutral beam injectors

The PRIMA Test Facility: SPIDER and MITICA test-beds for ITER neutral beam injectors

Progress in the realization of the PRIMA neutral beam test facility

Effect of magnetic field on voltage holding in the MITICA electrostatic accelerator

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