Prime pagine RA2010FUS:Copia di Layout 1 - ENEA - Fusione

superconductivity (cont’d.)
progress report
2010
089
4.1 Cable–in–Conduit Conductor
Manufacturing of ITER poloidal field conductor samples
ENEA is involved in the ITER program for the final qualification
of the conductors before the production phase. In this framework
ENEA was awarded two contracts, one from Iter Organization
(IO) and one from Fusion for Energy (F4E), for the manufacturing
of two PF conductor samples (PF1 and PF2,
ITER/CT/09/4300000048 Support on ITER PF conductor
sample design and preparation; F4E–2009–OPE–021 (MS–MG)
PF conductor sample). The activities started at the end of 2009
and went on for the first months of 2010, and have been split
between ENEA and Commissariat à l’Energie Atomique (CEA)
laboratories.
In particular, ENEA took care of jacketing and compacting the
cables supplied by IO and F4E (PF1 cable manufactured by the
Russian Domestic Agency and PF2 by Chinese Domestic Agency),
of preparing the cables and designing, manufacturing and
assembling the hairpin boxes. The hairpin box solution (fig. 4.1),
an ENEA concept which avoids the use of a resistive joint between
the two conductors, should diminish the possibility of current
redistribution effects close to the high field sample zone. CEA
prepared the upper terminations, assembled at ENEA
laboratories, and performed the sample insulation (fig. 4.2) and
instrumentation at CEA laboratories. As a result of these
contracts’ activities, two samples have been delivered to Centre de
Recherches en Physique des Plasmas (CRPP) and successfully
tested there in the SULTAN facility.
Figure 4.1 – Hairpin box
Figure 4.2 – PF sample, clamping and
insulation
Compaction of ITER CS empty tubes
To the purpose of obtaining a relevant stress–strain state to
perform bending trials in preparation of the winding operations,
IO placed a contract to ENEA to compact 10 empty tubes of
316LN steel. In this framework, ENEA took care of all the
relevant activities concerned with the compaction (fig. 4.3). In
particular, a deep inspection of the tubes external surface has been
performed together with a comprehensive dimensional survey of
Figure 4.3 – ITER CS during compaction