The AMIT cyclotron was developed as a collaboration led by CIEMAT to produce a compact and efficient superconducting cyclotron for radioisotope production. The magnet and its closed loop cryogenic system, based on Helium cooled by means of just one remotely located cryocooler, was manufactured. During the commissioning there was an accident at the first ramp up and the magnet supporting system was damaged. The alignment system of the coils was not able to properly position the coils inside the iron yoke, so finally it was decided to dismantle the whole cryostat to check the actual state of the inner parts. This paper describes the issues found during the commissioning of the AMIT cyclotron magnet and its cryogenic system, the partial solutions implemented and the final aperture of the cryostat. The conclusions are focused on the lessons learnt for manufacturing such a compact and low thermal losses superconducting magnet for radioisotope production and the recommendations for an improved and more reliable version.

The electrification of transport has been no exception for waterborne vessels. The reduction of emissions, especially during port maneuvering and operation, has accelerated the transition from fossil fuel to electric propulsion. Moreover, military vessels, with specialized electric weapon systems, or civil vessels, like offshore wind tug boats, have high power systems that additionally contribute to a higher electrification of the ship grid. Energy storage systems are essential to meet the power load economically and to improve the system`s reliability and efficiency. Therefore, the use of high energy density storage systems, as chemical batteries, or hydrogen fuel cells, has experienced a significant increase in demand. However, during high frequency load fluctuations, high energy density storage systems are not capable to actuate, since the discharge rate of these systems is physically limited, which may provoke: deterioration and reduction of the lifetime of the storage systems, voltage and frequency fluctuation of the ship grid. To overcome this limitation, this paper studies the use of a Superconducting Magnetic Energy Storage (SMES) as a supporting energy storage device for the ship grid. The guidelines for dimensioning, in power and energy, the SMES are stablished. Furthermore, an optimization method is developed in order to compare different superconducting materials, and operating temperatures.

The role of the Power Take-Off (PTO) as part of modern Wave Energy Converters is becoming more and more relevant and many efforts have been done or are ongoing to improve its performance especially in terms of force density and efficiency. Electric Linear PTOs are inherently the most efficient category, since they are really direct drives with no intermediate stages of energy conversion. Nevertheless, conventional electric machines are usually limited in force while their efficiency is better than other type of drives but still does not allow an intense energy capture in a broad band of wave periods. In this regard, superconductivity may become a very helpful alternative that allows improving both: efficiency and force density in spite of the technological difficulties that are introduced in the Wave Energy Converter. This paper, after justifying the need for better PTO performances, presents a new concept of superconducting PTO in which both, the stator and the translator work at cold temperature, performing a reciprocating displacement inside a flexible cryostat. The concept is later applied to a Cylindrical Switched Reluctance machine whose global design is also presented in the paper. This activity has been performed as one of the work packages of the EU H2020 Sea Titan Project in which also a resistive PTO with a novel configuration has been developed.

A4 Tesla superconducting magnet has been developed by CIEMAT for a compact cyclotron for radioisotope production in the framework of AMIT project (Advanced Molecular Imaging Techniques) in collaboration with other Spanish companies. First power tests were performed using liquid helium transferred from dewars. An autonomous cooling system has been developed in collaboration with CERN, where the system was characterized with a dummy load. Some improvements have been implemented to reduce the cooling time before connecting the cyclotron magnet. A new low-thermal-loss transfer line has been developed to overcome the problems detected in the first cooling tests connecting the magnet.