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The ITER full size plasma source device design

Abstract

In the framework of the strategy for the development and the procurement of the NB systems for ITER, it has been decided to build in Padova a test facility, including two experimental devices: a full size plasma source with low voltage extraction and a full size NB injector at full beam power (1 MV). These two different devices will separately address the main scientific and technological issues of the 17 MW NB injector for ITER. In particular the full size plasma source of negative ions will address the ITER performance requirements in terms of current density and uniformity, limitation of the electron/ion ratio and stationary operation at full current with high reliability and constant performances for the whole operating time up to 1 h. The required negative ion current density to be extracted from the plasma source ranges from 290 A/m{sup 2} in D{sub 2} (D{sup -}) and 350 A/m{sup 2} in H{sub 2} (H{sup -}) and these values should be obtained at the lowest admissible neutral pressure in the plasma source volume, nominally at 0.3 Pa. The electron to ion ratio should be limited to less than 1 and the admissible ion inhomogeneity extracted from the grids should be  More>>
Authors:
Sonato, P. , E-mail: piergiorgio.sonato@igi.cnr.it; [1]  Agostinetti, P; Anaclerio, G; Antoni, V; Barana, O; Bigi, M; Boldrin, M; [1]  Cavenago, M; [2]  Dal Bello, S; Palma, M Dalla; [1]  Daniele, A; [3]  D'Arienzo, M; De Lorenzi, A; Ferro, A; Fiorentin, A; Gaio, E; Gazza, E; Grando, L; Fantini, F; Fellin, F [1] 
  1. Consorzio RFX, EURATOM-ENEA Association, Corso Stati Uniti 4, I-35127 Padova (Italy)
  2. INFN, Legnaro, Padova (Italy)
  3. ENEA, Frascati, Roma (Italy)
Publication Date:
Jun 15, 2009
Product Type:
Journal Article
Resource Relation:
Journal Name: Fusion Engineering and Design; Journal Volume: 84; Journal Issue: 2-6; Conference: SOFT-25: 25. symposium on fusion technology, Rostock (Germany), 15-19 Sep 2008; Other Information: DOI: 10.1016/j.fusengdes.2008.11.095; PII: S0920-3796(08)00412-2; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; DESIGN; ITER TOKAMAK; NEUTRAL ATOM BEAM INJECTION; PLASMA; TEST FACILITIES
OSTI ID:
21283203
Country of Origin:
Netherlands
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0920-3796; FEDEEE; TRN: NL09R8303031120
Availability:
Available from http://dx.doi.org/10.1016/j.fusengdes.2008.11.095;INIS
Submitting Site:
NLN
Size:
page(s) 269-274
Announcement Date:
Apr 29, 2010

Citation Formats

Sonato, P. , E-mail: piergiorgio.sonato@igi.cnr.it, Agostinetti, P, Anaclerio, G, Antoni, V, Barana, O, Bigi, M, Boldrin, M, Cavenago, M, Dal Bello, S, Palma, M Dalla, Daniele, A, D'Arienzo, M, De Lorenzi, A, Ferro, A, Fiorentin, A, Gaio, E, Gazza, E, Grando, L, Fantini, F, and Fellin, F. The ITER full size plasma source device design. Netherlands: N. p., 2009. Web. doi:10.1016/j.fusengdes.2008.11.095.
Sonato, P. , E-mail: piergiorgio.sonato@igi.cnr.it, Agostinetti, P, Anaclerio, G, Antoni, V, Barana, O, Bigi, M, Boldrin, M, Cavenago, M, Dal Bello, S, Palma, M Dalla, Daniele, A, D'Arienzo, M, De Lorenzi, A, Ferro, A, Fiorentin, A, Gaio, E, Gazza, E, Grando, L, Fantini, F, & Fellin, F. The ITER full size plasma source device design. Netherlands. https://doi.org/10.1016/j.fusengdes.2008.11.095
Sonato, P. , E-mail: piergiorgio.sonato@igi.cnr.it, Agostinetti, P, Anaclerio, G, Antoni, V, Barana, O, Bigi, M, Boldrin, M, Cavenago, M, Dal Bello, S, Palma, M Dalla, Daniele, A, D'Arienzo, M, De Lorenzi, A, Ferro, A, Fiorentin, A, Gaio, E, Gazza, E, Grando, L, Fantini, F, and Fellin, F. 2009. "The ITER full size plasma source device design." Netherlands. https://doi.org/10.1016/j.fusengdes.2008.11.095.
@misc{etde_21283203,
title = {The ITER full size plasma source device design}
author = {Sonato, P. , E-mail: piergiorgio.sonato@igi.cnr.it, Agostinetti, P, Anaclerio, G, Antoni, V, Barana, O, Bigi, M, Boldrin, M, Cavenago, M, Dal Bello, S, Palma, M Dalla, Daniele, A, D'Arienzo, M, De Lorenzi, A, Ferro, A, Fiorentin, A, Gaio, E, Gazza, E, Grando, L, Fantini, F, and Fellin, F}
abstractNote = {In the framework of the strategy for the development and the procurement of the NB systems for ITER, it has been decided to build in Padova a test facility, including two experimental devices: a full size plasma source with low voltage extraction and a full size NB injector at full beam power (1 MV). These two different devices will separately address the main scientific and technological issues of the 17 MW NB injector for ITER. In particular the full size plasma source of negative ions will address the ITER performance requirements in terms of current density and uniformity, limitation of the electron/ion ratio and stationary operation at full current with high reliability and constant performances for the whole operating time up to 1 h. The required negative ion current density to be extracted from the plasma source ranges from 290 A/m{sup 2} in D{sub 2} (D{sup -}) and 350 A/m{sup 2} in H{sub 2} (H{sup -}) and these values should be obtained at the lowest admissible neutral pressure in the plasma source volume, nominally at 0.3 Pa. The electron to ion ratio should be limited to less than 1 and the admissible ion inhomogeneity extracted from the grids should be better than 10% on the whole plasma cross-section having a surface exposed to the extraction grid of the order of 1 m{sup 2}. The main design choices will be presented in the paper as well as an overview of the design of the main components and systems.}
doi = {10.1016/j.fusengdes.2008.11.095}
journal = []
issue = {2-6}
volume = {84}
place = {Netherlands}
year = {2009}
month = {Jun}
}