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Integration design of TPE-RX Neutral Beam Injector on RFX-mod

Authors :: Alberto Ferro
A. Gallo
S. Dal Bello
A. Tiso
Paolo Bettini
D. Zella
Piero Agostinetti
Y. Hirano
M. Tollin
M. Valisa
G. Lazzaro
Luca Grando
Satoru Kiyama
E. Zampiva
Hajime Sakakita
Nicola Pilan
Cesare Taliercio
Andrea Rizzolo
Source :: Fusion engineering and design 86 (2011): 772–775. doi:10.1016/j.fusengdes.2010.11.034, info:cnr-pdr/source/autori:S. Dal Bello; A. Ferro; A. Gallo; L. Grando; N. Pilan; A. Rizzolo; C. Taliercio; M. Valisa; P. Agostinetti; P. Bettini; G. Lazzaro; A. Tiso; M. Tollin; E. Zampiva; D. Zella; Y. Hirano; S. Kiyama; H. Sakakita/titolo:Integration design of TPE-RX Neutral Beam Injector on RFX-mod/doi:10.1016%2Fj.fusengdes.2010.11.034/rivista:Fusion engineering and design/anno:2011/pagina_da:772/pagina_a:775/intervallo_pagine:772–775/volume:86
Publication Year :: 2011
Publisher :: Elsevier BV, 2011.
Abstract: The TPE-RX Neutral Beam Injector, which provides a 25 keV positive ion beam energy with a maximum current of 50 A for a pulse duration of 30 ms, will be installed on RFX-mod thanks to the agreement with the AIST Institute of Tsukuba (Japan). The main scientific objective is the study of the behavior of the fast ions, which in the RFP helical equilibrium have exhibited very long confinement times. The integration of TPE-RX NBI on RFX-mod requires the development of several new components: a mechanical interface between the RFX-mod vacuum vessel and neutralizer; a Magnetic Residual Ion Dump; a new vacuum pumping system designed to maximize pumping and minimize beam stopping due to reionization. As regards the power supplies the compliance of the Japanese equipment to the Italian safety rules has been considered and layout studies have been carried out; the integration of the NBI control system in the RFX timing sequence has been studied as well.