High Power Coupler Devepment for EIC

The future EIC Electron storage ring at BNL needs to compensate up to 10 MW synchrotron loss with RF systems. The RF system relies on 34 fundamental power couplers to deliver RF power from power sources at room temperature to 17 SRF cavities at 2 K. Each power coupler will operate with 400 kW forward power, with full reflection for ~10% of time. We are developing two 1 MW coaxial FPCs at BNL, one with a BeO window and the other with an Al₂O₃ window. This paper will briefly summarize test results of high power test on the BeO window FPC , and then describe the development status of the Al₂O₃ window FPC.
Proceedings of the 20th International Conference on RF Superconductivity, SRF2021, East Lansing, MI, USA