Conveners
Theoretical approach for SRF Thin Films & Structures
- Uttar Pudasaini (Jefferson Lab)
We propose an alternative model to explain power dissipation leading to the formation of hot spots in the inner walls of niobium porous thin film superconducting rf cavities. The physical mechanism that we explore is related to the constriction of surface electrical current flow at grain interface boundaries. These constrictions create an additional electrical contact resistance which induces...
In this talk, we started with the cavity degradations' appearance and found two strategies to increase the cavity's thermal conductivity--- the outer-wall groove structure (OGS) and the inner-wall thermal conducting film (ITCF). We performed COMSOL simulations and found them effective. We hope these two structures can improve the thermal conductivity, thus increasing the cavity's Eacc limit.
