Detailed design optimization of the MITICA negative ion accelerator in view of the ITER NBI
- 17 December 2015
- journal article
- research article
- Published by IOP Publishing in Nuclear Fusion
- Vol. 56 (1), 016015
- https://doi.org/10.1088/0029-5515/56/1/016015
Abstract
The ITER Neutral Beam Test Facility (PRIMA) is presently under construction at Consorzio RFX (Padova, Italy). PRIMA includes two experimental devices: an ITER-size ion source with low voltage extraction, called SPIDER, and the full prototype of the whole ITER Heating Neutral Beams (HNBs), called MITICA. The purpose of MITICA is to demonstrate that all operational parameters of the ITER HNB accelerator can be experimentally achieved, thus establishing a large step forward in the performances of neutral beam injectors in comparison with the present experimental devices. The design of the MITICA extractor and accelerator grids, here described in detail, was developed using an integrated approach, taking into consideration at the same time all the relevant physics and engineering aspects. Particular care was taken also to support and validate the design on the basis of the expertise and experimental data made available by the collaborating neutral beam laboratories of CEA, IPP, CCFE, NIFS and JAEA. Considering the operational requirements and the other physics constraints of the ITER HNBs, the whole design has been thoroughly optimized and improved. Furthermore, specific innovative concepts have been introduced.Keywords
Funding Information
- Fusion for Energy (Agreement on the Neutral Beam Test)
This publication has 65 references indexed in Scilit:
- Neutral depletion in an H−source operated at high RF power and low input gas flowPlasma Sources Science and Technology, 2011
- Physics and engineering design of the accelerator and electron dump for SPIDERNuclear Fusion, 2011
- Modeling of secondary emission processes in the negative ion based electrostatic accelerator of the International Thermonuclear Experimental ReactorPhysical Review Special Topics - Accelerators and Beams, 2008
- Progress of the development of the IPP RF negative ion source for the ITER neutral beam systemNuclear Fusion, 2007
- Physics aspects of negative ion sourcesNuclear Fusion, 2006
- Overview of the RF source development programme at IPP GarchingNuclear Fusion, 2006
- High-power and long-pulse injection with negative-ion-based neutral beam injectors in the Large Helical DeviceNuclear Fusion, 2006
- Compensation of beam deflection due to the magnetic field using beam steering by aperture displacement technique in the multibeamlet negative ion sourceReview of Scientific Instruments, 2001
- An integral formulation for eddy current analyses in axisymmetric configurationsIEEE Transactions on Magnetics, 1989
- A powerful injector of neutrals with a surface-plasma source of negative ionsNuclear Fusion, 1974