Progress in Nb₃Sn SRF Cavities at Cornell University
| Autor: | Porter, Ryan, Hu, Hannah, Liepe, Matthias, Stilin, Neil, Sun, Zeming, Tao, Matthew |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| DOI: | 10.18429/jacow-napac2019-moybb3 |
| Popis: | Niobium-3 Tin (NbSn) is the most promising alternative material for next-generation SRF cavities. The material can obtain high quality factors (> 10¹⁰) at 4.2 K and could theoretically support ~ 96 MV/m operation of a TESLA elliptical style cavity. Current Nb₃Sn cavities made at Cornell University achieve high quality factors but are limited to about 17 MV/m in CW operation due to the presence of a surface defect. Here we examine recent results on studying the quench mechanism and propose that surface roughness is a major limiter for accelerating gradients. Furthermore, we discuss recent work on reducing the surface roughness including chemical polishing, modification of material growth, and tin electroplating. Proceedings of the North American Particle Accelerator Conference, NAPAC2019, Lansing, MI, USA |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|