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In the middle of last December, the vertical experiment for the MSU QWR superconductor cavity was completed successfully in laboratory. The test environment should maintain at 4.2K, so liquid helium must inject continuously. It’s need to shut cryogenic valve if the chamber is immersed in the liquid level while injecting liquid helium. In order to get liquid helium wastage, the liquid level meter is put in the equipment and then the change of liquid helium level could be recorded. As show below, Fig.1 is the data of liquid helium falling within 55 min.
In the middle of last December, the vertical experiment for the MSU QWR superconductor cavity was completed successfully in laboratory. The test environment should maintain at 4.2K, so liquid helium must be injected continuously. It’s need to shut cryogenic valve if the chamber is immersed in the liquid level while injecting liquid helium. In order to get liquid helium wastage, the liquid level meter is put in the equipment and then the change of liquid helium level could be recorded. As show below, Fig.1 is the data of liquid helium falling within 55 min.