THE LIQUID NITROGEN COOLED MAGNET FOR THE EINDHOVEN MHD BLOW DOWN FACILITY

L'installation MHD Blow Down de l'Université Technique d'Eindhoven est le premier générateur MHD à cycle fermé de puissance élevée en Europe occidentale. Son électro-aimant sans fer présente des bobines à têtes relevées refroidies à l'azote liquide. Un aperçu succinct est donné sur la conception et l'exécution de cet aimant. Il est suivi de quelques informations sur les performances de l'aimant qui ont donné entière satisfaction. La puissance électrique maximum atteinte par le générateur MHD a été de 360 kW pour une induction magnétique de 5.13 T.The Eindhoven MHD Blow Down Facility is the first high-power closed cycle MHD plant in Western Europe. The coreless saddle-shaped magnet has liquid nitrogen cooled excitation coils. An outline of the concept and the realization of the magnet is presented. This is followed by information on its performance, which has given full satisfaction. The maximum electric power generated in the MHD channel is 360 kW at an induction level of 5.13 T

STATUS REPORT ON THE SWISS LCT-COIL

La contribution de l a Suisse au projet LCT consiste en une bobine supraconductrice de 8 Tes la fabriquée en NbTi refroidie par circulation forcée d'hélium supercritique. La fabrication de cette bobine est presque terminée. Le rapport présente quelques calculs définitifs, l'expérience acquise sur la fabrication du conducteur et de la bobine, et porte sur le choix de l'instrumentation et sur les résultats du test des amenées de courant.The Swiss contribution to the Large Coil Task (LCT) is a NbTi based 8T coil cooled by pressurised supercritical helium in forced flow mode. Its fabrication nears completion. This progress report reviews some final calculations, the experience on conductor and coil fabrication as well as the instrumentation foreseen and the results of the current lead tests

Progress of the ITER central solenoid model coil programme

The world's largest pulsed superconducting coil was successfully tested by charging up to 13 T and 46 kA with a stored energy of 640 MJ. The ITER central solenoid (CS) model coil and CS insert coil were developed and fabricated through an international collaboration, and their cooldown and charging tests were successfully carried out by international test and operation teams. In pulsed charging tests, where the original goal was 0.4 T/s up to 13 T, the CS model coil and the CS insert coil achieved ramp rates to 13 T of 0.6 T/s and 1.2 T/s, respectively. In addition, the CS insert coil was charged and discharged 10 003 times in the 13 T background field of the CS model coil and no degradation of the operational temperature margin directly coming from this cyclic operation was observed. These test results fulfilled all the goals of CS model coil development by confirming the validity of the engineering design and demonstrating that the ITER coils can now be constructed with confidence