use of NEG Pumps and Coatings in Large Vacuum Systems - CERN ...
use of NEG Pumps and Coatings in Large Vacuum Systems - CERN ...
use of NEG Pumps and Coatings in Large Vacuum Systems - CERN ...
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<strong>NEG</strong> pumps: ma<strong>in</strong> (practical) features<br />
• High pump<strong>in</strong>g speed for active gases (especially for hydrogen)<br />
• High capacity (= long life: Front-Ends@Elettra > 12 years)<br />
• Compact size (easy to add <strong>in</strong> an exist<strong>in</strong>g vacuum system)<br />
• Light weight<br />
• Very clean (<strong>NEG</strong> powder ?)<br />
• Vibration-free<br />
• Operation without power consumption (after activation !)<br />
• Operation <strong>in</strong> the presence <strong>of</strong> high magnetic fields<br />
• Reversible pump<strong>in</strong>g <strong>of</strong> hydrogen<br />
• Relatively Expensive (<strong>in</strong>itial cost)<br />
CAS May 17-23, 2006<br />
F. Mazzol<strong>in</strong>i – The <strong>use</strong> <strong>of</strong> <strong>NEG</strong> <strong>Pumps</strong> <strong>and</strong> <strong>Coat<strong>in</strong>gs</strong> <strong>in</strong> <strong>Large</strong> <strong>Vacuum</strong> <strong>Systems</strong>: Experience <strong>and</strong> limitations
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