| Paper |
Title |
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| WEPKF007 |
Vacuum Characterisation of a Woven Carbon Fiber Cryosorber in Presence of H2
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1603 |
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- V. Baglin, H. Dupont, T. Garcin
CERN, Geneva
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Some of the cryogenic components in the Large Hadron Collider (LHC) will operate at 4.5 K. The H2 desorption will rapidly increase to the saturated vapour pressure, 3 orders of magnitude larger than the design pressure. Therefore, the use of cryosorbers is mandatory to provide the required pumping capacity and pumping speed. The behaviour of a woven carbon fiber to be used as a cryosorber has been studied under H2 injection. The pumping speed and capacity measured in the range 6 to 30 K are described. Observations made with an electron microscope are shown. A proposed pumping mechanism and the implications to the LHC are discussed.
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