Speaker
Description
RF testing is a key element in the development of super-
conducting thin film coated cavities. In order to optimize the
deposition process, tests initially focussed on flat samples,
before moving on to RF cavity tests, however the jump from
flat samples to cavities is large and often requires signifi-
cant changes to the deposition process. In order to develop a
multi-step approach to cavity testing, a new 1.3 GHz test cav-
ity has been designed as an intermediary between depositing
on flat samples and research cavities. The cavity is split
longitudinally, giving it an open-faced design, that enables
planar thin film deposition techniques, as well as facilitating
easy access for quality control of the deposited surfaces. In
addition it has been designed to have a low surface electric
field, which allows us to test the superconducting properties
due only to the magnetic field, without it being perturbed
by field emissions. This paper discusses the design of this
novel cavity geometry for use in thin film testing.
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