Nuclear industry

Category: Industry Applications

Release time: 2026-03-30

 

The DZB400 cryopump is used in a large tokamak fusion device.

The DZB400 cryopump is used in a large tokamak fusion device.
The DZB400 cryopump is used in the differential system of a neutron generator.  

 

In the nuclear industry and in fusion research, maintaining an ultra-high vacuum is essential for plasma confinement, neutron yield control, and stable system operation. Cryopumps, with their oil-free design, high pumping speed, and ability to remove reactive gases, play a critical role in core experimental devices.

The DZB400 cryopump is employed in a large tokamak fusion device. Installed in the divertor or the main vacuum chamber, it efficiently evacuates deuterium–tritium fuel and impurities such as helium ash produced by the fusion reaction, helping to maintain plasma purity and confinement performance, thereby providing reliable ultra-high vacuum conditions for long-pulse steady-state operation.

The DZB400 cryopump is employed in the differential pumping system of a neutron generator. This system must establish a gradient transition from high pressure to high vacuum under limited conductance. Positioned between the differential pumping stages, the pump rapidly removes entrained deuterium–tritium gases, effectively preventing backflow into the accelerator tube or beamline, thereby ensuring stable operation of the neutron generator and maintaining the required vacuum pressure differential.

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