JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
@inproceedings{steder:linac2022-thpoge22, author = {L. Steder and C. Bate and H. Remde and D. Reschke and J. Schaffran and L. Trelle and H. Weise and M. Wenskat and M. Wiencek}, % author = {L. Steder and C. Bate and H. Remde and D. Reschke and J. Schaffran and L. Trelle and others}, % author = {L. Steder and others}, title = {{Medium Temperature Treatments of Superconducting Radio Frequency Cavities at DESY}}, booktitle = {Proc. LINAC'22}, % booktitle = {Proc. 31st International Linear Accelerator Conference (LINAC'22)}, pages = {840--843}, eid = {THPOGE22}, language = {english}, keywords = {cavity, niobium, SRF, factory, accelerating-gradient}, venue = {Liverpool, UK}, series = {International Linear Accelerator Conference}, number = {31}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {09}, year = {2022}, issn = {2226-0366}, isbn = {978-3-95450-215-8}, doi = {10.18429/JACoW-LINAC2022-THPOGE22}, url = {https://jacow.org/linac2022/papers/thpoge22.pdf}, abstract = {{Over the last years several different approaches to increase the performance of superconducting radio frequency (SRF) cavities by heat treatments have been developed and tested. At DESY, the R&D aims for cavities with enlarged quality factors while maintaining high accelerating gradients, since an envisaged upgrade of the European XFEL requires both. For this purpose, medium temperature (mid-T) treatments around 300 °C seem to be very promising. Lately, the furnace infrastructure at DESY was refurbished and now a niobium-retort furnace capable of carrying 1.3 GHz nine-cell cavities can be used for R&D studies. Vertical test results of single-cell cavities treated in this furnace at medium temperatures are presented and compared to four cavities treated similarly in a furnace at the company Zanon Research & Innovation Srl (Zanon). All mentioned cavities show enlarged quality factors but at the same time reduced gradients compared to their reference measurements before the mid-T treatment. The DESY treatments were accompanied by small niobium samples for surface analyses, which are also presented. Furthermore, the influence of post-treatment high pressure water rinsings is studied.}}, }