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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Gaxiola, E. Caspers, F. Kroyer, T. Ducimetiere, L. Bertin, J. |
| Copyright Year | 2005 |
| Description | Author affiliation: CERN, Geneva, Switzerland (Gaxiola, E.) |
| Abstract | SPS beam impedance is still one of the worries for operation with nominal LHC beam over longer periods, once the final configuration will be installed in 2006. Several CERN SPS kickers suffer from significant beam induced ferrite heating. In specific cases, for instance beam scrubbing, the temperature of certain ferrite yokes went beyond the Curie point. Several retrofit impedance reduction techniques have been investigated theoretically and with practical tests. We report on experience gained during the 2004 SPS operation with resistively coated ceramic inserts in terms of kicker heating, pulse rise time, operating voltage, and vacuum behaviour. For another technique using interleaved metallic stripes we observed significant improvements in bench measurements. Advantages and drawbacks of both methods and potential combinations of them are discussed and simulation as well as measured data are shown. Prospects for further improvements beyond 2006 are briefly outlined. |
| Starting Page | 1742 |
| Ending Page | 1744 |
| File Size | 588235 |
| Page Count | 3 |
| File Format | |
| ISBN | 0780388593 |
| DOI | 10.1109/PAC.2005.1590897 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2005-05-16 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Optical coupling Structural beams Heating Ceramics Temperature sensors Large Hadron Collider Ferrites Magnets Impedance measurement Cooling |
| Content Type | Text |
| Resource Type | Article |
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