On 21–29 September 2025, representatives of the Flerov Laboratory of Nuclear Reactions visited XSMT (Xi’an Superconducting Magnet Technology, Xi’an, China) to participate in factory acceptance tests of a superconducting magnet, the key element of the new GASSOL Separator Solenoid.

The GASSOL Magnetic Gas-Filled Separator is a new experimental facility being created at the Laboratory of Nuclear Reactions at JINR to study the chemical properties of superheavy elements with short lifetimes. The main part of this facility is a 20-tonne superconducting magnet developed by Neva-Magnet LLC (Saint Petersburg, Russia) according to the terms of reference and in close cooperation with the Joint Institute. The technical design of the magnet was published in the Physics of Elementary Particles and Atomic Nuclei (PEPAN) journal. The GASSOL Separator will be installed in the experimental hall of the DC-280 Cyclotron at the Superheavy Elements Factory.

During the first-time tests of the magnet manufactured by XSMT, the design magnetic field of 7.6 T was achieved on the axis of the warm bore of the cryostat with a diameter of 354 mm at a test current of 246 A. The rated operating current of the magnet is 226 A.

The FLNR delegation included Deputy Director of the laboratory Alexander Karpov, Deputy Head of the Scientific and Technical Department of Accelerators Kirill Gikal, Head of Group No. 1 of Electronic Test Equipment Alexey Voinov, Head of Group No. 2 of the Gas-Filled Separator Dmitry Solovyev, and Head of Sector No. 2 of the Formation Reaction and Structure of Heavy Nuclei Alexandr Svirikhin. In addition, Neva-Magnet LLC CEO Evgeny Koshurnikov took part in the working visit.