Status report on the forced flow high field test facility SULTAN

The construction of the Test Facility SULTAN - a common action of three European laboratories: ENEA (I-Frascati), ECN (NL-Petten) and SIN (CH-Villigen) is near completion. In this paper the status of the contributions of the different partners is described: (a) The SIN part of the facility, the cryogenic system the current leads, the power supplies and the data acquisition system has been put into operation. Results of these tests are presented. (b) The background field will be generated by two concentric solenoids. The ENEA contribution is concerned with the realization of the outer solenoid. This coil, which has been recently completed, will provide a 6 T field in the useful region, the remaining 2 T being supplied by the coaxial ECN insert coil. Details of the design, winding technique, hydraulic circuitry as well as instrumentation of both coils will be given and discussed. In addition the future upgrading to 12 T is outlined.