Résumé du preprint DAPNIA-04-12
| DAPNIA-04-12 |
|---|
| Improved surface treament of the superconducting Tesla cavities (TESLA 2004-04) |
| L. Lilje, A. Matheisen, D. Proch, D. Reschke, D. Trines, C. Antoine, J.P. Charrier, H. Safa, B. Visentin, C. Benvenuti, D. Bloess? E. Chiaveri, L. Feirreira, R. Losito, H. Preis, H. Wenninger, P. Schmüser. |
The proposed linear electron–positron collider TESLA is based on 1:3 GHz superconducting niobium cavities for particle acceleration. For a centre-of-mass energy of 500 GeV; an accelerating field of 23:4 MV=m is required which is reliably achieved with a niobium surface preparation by chemical etching. An upgrade of the collider to 800 GeV requires an improved cavity preparation technique. In this paper, results are presented on single-cell cavities which demonstrate that fields of up to 40 MV=m are accessible by electrolytic polishing of the inner surface of the cavity. |
