At the beginning of the 20th century, successful preservation methods for cells and tissues were developed with new insights into biology and physics. In nature, we have already seen interesting examples of biopreservation. For instance, species such as water-bears (e.g., Tardigrada) and distinct frog types (e.g., Rana sylvatica) can survive in extremely cold temperatures by replacing the water...

Abstract PandaX-4T, the new generation of PandaX detector, is a xenon dual-phase detector with about six tons liquid as target for dark matter search. A cryogenics and handling system designed to liquify purify this large detector. In paper, results on commission gas are reported. The maximum cooling power ? 580 W at 178 K three cooperating coldheads has been achieved. filling rate an assisted ...

In the practical application of cryogenic systems, presence thermo acoustic oscillation can cause a series adverse consequences such as pressure fluctuations, thermal leakage, structural damage, and so on. To ensure stable operation system, variable cross-section control pipe fittings are introduced, response surface analysis method is used to optimize parameter design fittings. A simulations h...

Abstract The EXO-200 experiment searched for neutrinoless double-beta decay of 136 Xe with a single-phase liquid xenon detector. It used an active mass 110 kg 80.6%-enriched in ultra-low background time projection chamber ionization and scintillation detection readout. This paper describes the design performance various support systems necessary detector operation, including cryogenics, handlin...