We offer to your attention a preprint “System of Cryogenic Physical Targets for the ACCULINNA-2 Facility” P13-2022-48 issued by the JINR Publishing Department. The authors are Sergey Krupko, Alexander Gorshkov, Andrey Bezbakh, Andrey Fomichev, Gurgen Ter-Akopian (FLNR JINR).

To carry out the experiments with radioactive beams at the ACCULINNA-2 fragment separator at the Flerov Laboratory of Nuclear Reactions, a complex of cryogenic thin physical targets with isotopes H₂, D₂, T₂, ³He, ⁴He in gas, liquid and solid (for hydrogen) phases is being created.

One of the three types of the created cryotargets for nondangerous gases in any phase at a temperature of 11–30 K is described. Requirements to the targets are set. A variety of available cells are presented, a concept of safe operation with the solid phase of hydrogen is given, and the gas-vacuum test bench for its implementation is described.

The study has been carried out in the Flerov Laboratory of Nuclear Reactions at JINR and sent to the journal “Physics of Elementary Particles and Atomic Nuclei, Letters”.

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