Electromagnetic mass separator for heavy element radioisotope separation

An electromagnetic mass separator of a sector type intended for uranium isotope separation and U-234 production is described. The working chamber, magnet and vacuum system are located in a special ''canyon''. Operation controlling of the vacuum system, power supply system, as well as controlling of the installation operation regime is carried out remotely from the controlling panel. To simplify periodic decontamination of the working chamber a dismountable protective cover (liner) made of thin stainless steel is mounted inside it. The main parameters of the electromagnetic separator are the following: 2 rad - angle of the analyzing magnet sector, 60 A/m - maximum field intensity in the gap centre, 46 keV - maximum energy of single-charge ions, +-5 deg - maximum angle of horizontal beam divergence, 1500 - resolution of the mass peaks at the half-height, 250 - relative isotopic enrichment. The problems of installation adjustment, the methods of uranium preparation treatment and the problems of radiation safety are discussed. The results of uranium-234 accumulation are presented. Uranium tetrachloride is used as an initial preparation for U-234 accumulation. As a result of reprocessing of 24 g uranium tetrachloride 4.73 mg U-234 is extracted. The U-234 samples with 95.3 % purity are prepared