TFWG Meeting - Nb on Cu R&D

Wednesday 20 Oct 2021, 15:30 → 16:30 Europe/Zurich

zoom

Marc Wenskat, Sebastian Keckert (Helmholtz-Zentrum Berlin)

The TTC thin film working group is a forum to present and discuss new results, ideas, technical progress and challenges related to SRF thin films and new materials.

The content of this meetings is considered unpublished and preliminary and is not intended for external reference or distribution.

Zoom meeting
Meeting-ID: 657 3141 2909
Password: 95847880
https://uni-hamburg.zoom.us/j/65731412909?pwd=MEV5YzM1bzB3dlZiMDFxZnRrdGVkdz09

15:30 → 15:45 X-ray Computed Tomographic/Focused Ion Beam Investigation of the defect on Niobium coated copper radio frequency cavity

Speaker: Sapideh Aliasghari (U Manchester)

15:45 → 16:00 Progress of the R&D campaign on Nb/Cu 1.3 GHz cavities at CERN

The first Nb/Cu SRF cavities were produced at CERN in the 1980s. This technology offers several advantages with respect to the bulk Nb cavities. However, a degradation in the performance with increasing accelerating fields (Q-slope) was observed systematically, which limited the application of Nb/Cu cavities to low gradient accelerators. Since then, the SRF community has put efforts to understand and mitigate this phenomena. In this presentation we are going to describe the recent progress of the R&D campaign carried out at CERN, and give an overview of the latest results of Nb/Cu 1.3 GHz cavities with seamless substrates, which are a proof that the Q-slope is not intrinsic to this technology, but it can be overcome.

Speaker: Lorena Vega Cid (CERN)

20211020_TTC_Nb_on_Cu_R&D.pdf

20211020_TTC_Nb_on_Cu_R&D.pptx

16:00 → 16:30 Open discussion