A5033319319- Particle accelerators and beam dynamics
- Magnetic confinement fusion research
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Plasma Diagnostics and Applications
- Fusion materials and technologies
- Atomic and Molecular Physics
- Gyrotron and Vacuum Electronics Research
- Metal and Thin Film Mechanics
- Ammonia Synthesis and Nitrogen Reduction
- Spacecraft and Cryogenic Technologies
- Hydrogen Storage and Materials
- Muon and positron interactions and applications
- Electromagnetic Launch and Propulsion Technology
- Radiation Therapy and Dosimetry
- Laser-Plasma Interactions and Diagnostics
- Rocket and propulsion systems research
- Chemical Reactions and Isotopes
- Refrigeration and Air Conditioning Technologies
- Advanced Battery Technologies Research
Max Planck Institute for Plasma Physics
2015-2024
University of Padua
2023
Max Planck Society
2007-2021
Fraunhofer Institute for Ceramic Technologies and Systems
2020
National Agency for New Technologies, Energy and Sustainable Economic Development
2007
The ITER neutral beam system will be equipped with radio-frequency (RF) negative ion sources, based on the IPP Garching prototype source design. Up to 100 kW at 1 MHz is coupled RF driver, out of which plasma expands into main chamber. Compared arc driven sources are maintenance free and without evaporation tungsten. modularity driver concept permits supply large volumes. (one driver) demonstrated operation in hydrogen deuterium up one hour relevant parameters. ELISE test facility operating...
The ITER project requires additional heating by two neutral beam injectors, each accelerating to 1 MV a 40 A of negative deuterium ions, deliver the plasma power about 17 MW for one hour. As these requirements have never been experimentally met, it was recognized as necessary setup test facility, PRIMA (Padova Research on Megavolt Accelerator), in Italy, including full-size ion source, SPIDER, and prototype whole injector, MITICA, aiming develop injectors be installed ITER. This realization...
Wendelstein 7-X is the first comprehensively optimized stellarator aiming at good confinement with plasma parameters relevant to a future power plant. Plasma operation started in 2015 using limiter configuration. After installing an uncooled magnetic island divertor, extending energy limit from 4 80 MJ, continued 2017. For this phase, electron cyclotron resonance heating (ECRH) capability was extended 7 MW, and hydrogen pellet injection implemented. The enhancements resulted highest triple...
The Max-Planck-Institut für Plasmaphysik test facility ELISE is an important intermediate step towards the in-time realization of ITER neutral beam injection system (NBI). equipped with a large radio-frequency (RF) driven negative hydrogen ion source (1 × 0.9 m2) half size NBI source. paper reports on main results very first operation caesium, but low RF power, both for and deuterium, pulse lengths up to 500 s. are rather encouraging achievement required parameters, especially in hydrogen,...
SPIDER is one of the two projects ITER Neutral Beam Test Facility (NBTF) under construction in Padova, Italy, at Consorzio RFX premises; it will have a 100 keV beam source with full-size prototype radiofrequency (RF) ion for Injector (NBI), designed to operate pulse length up 3600 s, featuring ITER-like filter field configuration, caesium oven layout and wide set diagnostics.These features allow reproducing operation like as cannot be done any other existing test facility.SPIDER realization...
The large-scale RF-driven ion source of the test facility extraction from a large experiment is aimed to deliver an accelerated current 20 A D− (23 H−) with extracted electron-to-ion ratio below one for up 1 h. Since first plasma pulses s in volume operation early 2013, followed by caesiation source, substantial progress has been achieved extending pulse length and RF power. record hydrogen are stable 400 18.3 at 180 kW total power 9.3 80 For deuterium pulse, limited amount co-extracted electrons.
The test facility ELISE represents an important step in the European R&D roadmap towards neutral beam injection (NBI) systems on ITER. provides early experience with operation of large radio frequency (RF) driven negative hydrogen ion sources. Starting first plasma pulses March 2013, has demonstrated stable 1 h discharges repetitive 10 s extraction every 3 min and deuterium at pressure 0.3 Pa required by Stable currents 9.3 A 5.8 have been extracted using only one quarter available RF power...
The development of a radio frequency (RF) driven source for negative hydrogen ions the neutral beam heating devices fusion experiments has been successfully carried out at IPP since 1996 on test facility BATMAN. required ITER parameters have achieved with prototype consisting cylindrical driver back side racetrack like expansion chamber. extraction system, called "Large Area Grid" (LAG) was derived from positive ion accelerator ASDEX Upgrade (AUG) using its aperture size (ø 8 mm) and pattern...
Abstract A low beamlet divergence is crucial for the efficiency of ITER-NBI systems, since it affects transmission beam through duct. There a requirement 7 mrad e -folding ITER Heating Neutral Beam. Significantly higher divergences (10–15 mrad) have been observed in RF-source based experiments albeit at energy. This could be consequence broad perpendicular velocity distribution H − /D particles before extraction. paper explores this hypothesis and its implications ITER. To estimate...
The megavolt ITER injector and concept advancement experiment is the prototype test bed of heating current drive neutral beam injectors, currently in final design phase, view installation Padova Research on Injector Megavolt Accelerated facility Padova, Italy. source key component system, as its goal generation 1 MeV accelerated deuterium or hydrogen negative ions. This paper presents highlights latest developments for finalization MITICA design, together with a description most recent...
Abstract ITER’s NBI systems are a first of its kind system with very challenging targets for the RF-driven ion source and acceleration stage. In step ladder approach, test facilities BATMAN Upgrade (BUG) ELISE support activities carried out at Neutral Beam Test Facility, Padua, which is equipped facility SPIDER MITICA being equivalent to ITER Heating injector (HNB), capable operating full power pulse length HNBs. The contributions prototype BUG (1/8 scale) size scaling experiment (1/2...
The ITER neutral beam system requires a negative hydrogen ion of 48 A with an energy 0.87 MeV, and deuterium 40 1 MeV. is extracted from large source dimension 1.9 × 0.9 m 2 by acceleration consisting seven grids 1280 apertures each. Currently, diameter 14 mm in the first grid are foreseen. In 2007, IPP RF was chosen as reference due to its reduced maintenance compared arc-driven sources successful development at BATMAN test facility being equipped small prototype ( area NBI source). These...