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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ID vacuum chambers @ Elettra<br />
ID Type L * [mm] α [mrad]<br />
1 Al (no ante-chamber) 4743 7.6<br />
2 Al + <strong>NEG</strong> (no ante-ch.) 4651 7.3<br />
3 SS (with ante-chamber) 4800 7.8<br />
4 SS (no ante-chamber) 4020 6.1<br />
5 SS (with ante-chamber) 4800 7.8<br />
6 SS (with ante-chamber) 4800 7.8<br />
7 Al + <strong>NEG</strong> (no ante-ch.) 3000 7.8<br />
8 Al (no ante-chamber) 4743 7.6<br />
9 Al + <strong>NEG</strong> (no ante-ch.) 4743 7.6<br />
10 Al + <strong>NEG</strong> (no ante-ch.) 4743 7.6<br />
L * = chamber length without tapers (usable length for ID)<br />
α = horizontal angle <strong>of</strong> the photon-beam, from the previous<br />
bend<strong>in</strong>g magnet, hitt<strong>in</strong>g the straight vacuum chamber<br />
CAS May 17-23, 2006<br />
Bend<strong>in</strong>g<br />
Magnet<br />
1)<br />
Photons:<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<br />
2)<br />
Insertion Device<br />
α<br />
3)<br />
1)<br />
2)<br />
1) from the previous bend<strong>in</strong>g magnets<br />
2) to the bent chamber<br />
3) to the straight chamber<br />
Bend<strong>in</strong>g<br />
Magnet
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