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CROSS CHECKING OF GANDALF AND VINCENTA ON THE CS BEHAVIOUR DURING ITER REFERENCE SCENARIO

2010; American Institute of Physics; Linguagem: Inglês

10.1063/1.3422315

1935-0465

S. Nicollet, D. Bessette, D. Ciazynski, J.L. Duchateau, Benoît Lacroix, J. G. Weisend,

Particle accelerators and beam dynamics

During the plasma reference scenario of ITER, the Central Solenoid (CS) coils are submitted to pulsed heat loads due to pulse operating currents. All Cable‐In‐Conduit‐Conductors (CICC) of these magnets are cooled with a forced flow of supercritical helium. Thermohydraulic calculations aim to estimate the heat loads (static and pulsed) transferred to the thermal bath connected with the cryogenic refrigerator.These calculations are performed on the ITER CS system as its design is practically frozen. Comparison of the models is made through cross checking of two numerical codes: 1‐ Vincenta (Efremov Institute, Saint‐Petersburg) a quasi‐3D code which can model all the CS coil CICCs in parallel and the first cryogenic loop. 2‐ Gandalf (CryoSoft) which models one CICC (1‐D) and an associated cryogenic circuit (Flower) which has to be adapted in order to be relevant.The Gandalf model deals with the pancake 101 experiencing the most severe conditions. The results of Vincenta code are procured by ITER Organization (IO). These results are compared with Gandalf‐Flower model (presented herein) in terms of helium pressure, temperature and mass flow rate at inlet and outlet of the studied conductor. This normal operation should be compared with a quench detection, in a further work.