P1.022 The transmission line for the SPIDER experiment: from

29th Symposium on Fusion Technology (SOFT 2016)
Contribution ID :
49569
Type :
Poster
P1.022 The transmission line for the SPIDER
experiment: from design to installation
Monday, 5 September 2016 14:20 (1:40)
Content
SPIDER (Source for the Production of Ions of Deuterium Extracted from RF plasma) is the 100keV
Ion Source Test facility (presently under construction in the Neutral Beam Test Facility at Consorzio
RFX premises, in Padua, Italy) representing the full scale prototype of the Ion Source (IS) for the
ITER 1 MeV Neutral Beam Injector (NBI). SPIDER Ion Source, polarized at -100kVdc Power
Supply, is meant to produce Deuterium or Hydrogen negative ions which, after being extracted
by the extraction grid, are accelerated up to ground potential. The required Ion Source and the
Extraction Grid Power Supplies (ISEPS) system and the associated diagnostics need to be hosted
inside a -100kVdc air-insulated Faraday cage, called High Voltage Deck (HVD), while a High Voltage
Transmission Line (TL) transmits the power and signal conductors from the ISEPS to the Ion
Source. An air insulated design of the TL, duly screened against Electromagnetic Interferences
(EMI) produced by the frequent IS grids breakdowns was preferred to a more complex and costly
Gas Insulated Line design because of the large diameter required by the TL inner conductor to host
all ISEPS power and signal conductors, fibres optic and cables. The TL is procured (together with
the HVD) by COELME SpA, via a procurement contract with Fusion for Energy (F4E) started mid
2013. The paper describes the construction solutions developed by the Manufacturer to meet the
design indications and technical specification requirements for such unconventional device. Moreover,
the results of factory type tests, carried out on a first section of the TL mid-2015 to validate the
design and release the manufacturing of the overall TL, are also described. Finally, the paper reports
on the on-site installation and commissioning activities, presently ongoing, up to the final acceptance
foreseen within the current year.
Co-author(s) : BOLDRIN, Marco (Consorzio RFX (CNR, ENEA, INFN, Università di Padova,
Acciaierie Venete S.p.A.), Corso Stati Uniti 4, 35127 Padova, Italy); TOIGO, Vanni (Consorzio RFX
(CNR, ENEA, INFN, Università di Padova, Acciaierie Venete S.p.A.), Corso Stati Uniti 4, 35127 Padova,
Italy); GUTIERREZ, Daniel (Fusion For Energy, c/o Josep Pla 2, 08019 Barcelona, Spain); SIMON,
Muriel (Fusion For Energy, c/o Josep Pla 2, 08019 Barcelona, Spain); FAORO, Giovanni (COELME
Costruzioni Elettromeccaniche S.p.A., via G. Galilei n◦ 1/2, 30036 S. Maria di Sala (Venezia), Italy); MAGGIORA, Edoardo (COELME Costruzioni Elettromeccaniche S.p.A., via G. Galilei n◦ 1/2, 30036 S. Maria
di Sala (Venezia), Italy); PEDRON, Diego (COELME Costruzioni Elettromeccaniche S.p.A., via G.
Galilei n◦ 1/2, 30036 S. Maria di Sala (Venezia), Italy); GUION, Andrea (COELME Costruzioni
Elettromeccaniche S.p.A., via G. Galilei n◦ 1/2, 30036 S. Maria di Sala (Venezia), Italy); DECAMPS,
Hans (ITER Organization, Route de Vinon-sur-Verdon, CS 90 046, 13067 St Paul Lez Durance Cedex,
France)
Presenter(s) : BOLDRIN, Marco (Consorzio RFX (CNR)
Session Classication : P1 Poster session
Track Classication : B. Plasma Heating and Current Drive