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TY - CONF AU - Kolb, P. AU - Laxdal, R.E. AU - Yao, Z.Y. ED - Michel, Peter ED - Arnold, André ED - Schaa, Volker RW TI - Low Frequency, Low Beta Cavity Performance Improvement Studies J2 - Proc. of SRF2019, Dresden, Germany, 30 June-05 July 2019 CY - Dresden, Germany T2 - International Conference on RF Superconductivity T3 - 19 LA - english AB - In recent years, new discoveries such as N₂ doping and infusion lead to a significant increases in Q₀ and accelerating gradient for 1.3 GHz, β=1 elliptical cavities. To understand and to adapt these treatments for lower frequency, \beta < 1 cavities, two coaxial test cavities, one quarter-wave resonator (QWR) and one half-wave resonator (HWR), have been built and put through a systematic study of these new treatments to show the effectiveness of these treatments at different frequencies. These cavities are tested in their fundamental mode and several higher order modes to study the frequency dependence of new cavity treatments such as N₂ doping and infusion. Results of these studies are presented. PB - JACoW Publishing CP - Geneva, Switzerland SP - 527 EP - 532 KW - cavity KW - niobium KW - SRF KW - factory KW - vacuum DA - 2019/08 PY - 2019 SN - "" SN - 978-3-95450-211-0 DO - doi:10.18429/JACoW-SRF2019-TUP046 UR - http://jacow.org/srf2019/papers/tup046.pdf ER -