SLAC ILC R&D Progress Report-11/21/2005 (39)
1:30:00 PM-3:00:00 PM
| Agenda: |
November 21 - Damping rings DR design - Cai, Wolski e- cloud and ions - Pivi ATF kicker and BPM R&D - Ross,et al TTF HOM readout - Ross |
| Summary: |
1 .) id=122 Marc Ross -- ATF & TTF R&D Update (20 min)
| Summary: |
2 .) id=123 Yunhai Cai -- Recommendations for the ILC Damping Ring Configuration (20 min)
| Summary: Results of meeting at CERN November 2005 to recommend a specific configuration to the GDE. The positron damping ring should consist of two (roughly circular) rings of approximately 6 km circumference in a single tunnel. Electron-cloud effects make a single ring of circumference 6 km or lower unattractive, unless significant progress can be made with mitigation techniques. Space-charge effects will be less problematic in a 6 km than in a 17 km ring, and achieving the required acceptance will be easier in a circular ring than in a dogbone ring. The electron ring can consist of a single 6 km ring, assuming that the fill pattern allows a sufficient gap for clearing ions. The injection and extraction kickers and ion effects are more difficult in a 3 km ring than in a 6 km ring. A 17 km ring could ease ion effects (by allowing larger gaps between minitrains), but would likely be higher cost. We have no recommendation on whether the electron ring needs a separate tunnel from the positron rings. |
3 .) id=124 Mauro Pivi -- Electron Cloud R&D Update (20 min)
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