In this alternative process superconducting RF cavities are quickly baked, open-ended in argon atmosphere. «Fast Argon-Baking» is especially well adapted for cavity mass production because it combines short baking time (only three hours) and simplicity since it does not require maintaining the cavity under vacuum during treatment. Oxygen-free atmosphere or vacuum is a necessary condition in “Fast Baking” techniques.
For better understanding of baking experiments, Secondary Ion Mass Spectroscopy analyses have been performed on Nb samples baked in similar conditions to cavities. While interstitial oxygen diffusion is assumed playing a role in Q-slope improvement, results show an insignificant change of oxygen concentration profiles.
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