Abstract
After the completion of the third experimental campaign in 2018, actively cooled high heat flux divertors (10 pcs.) will be implemented within the stellarator fusion experiment Wendelstein 7-X (W7-X). A cryo vacuum pump will be installed in the plasma vessel behind the divertor. These pumps will be cooled with super critical helium at 3.9 K and liquid nitrogen at 80 K. A multichannel transfer line connects the helium refrigerator with a valve box located below the W7-X cryostat. From there, 10 parallel transfer lines run to the cryo pumps inside the plasma vessel. The lay out and the hydraulic design of the distribution system are discussed.
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More From: IOP Conference Series: Materials Science and Engineering
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