Radio srf program

Sapphire is extremely conductive at these temperatures, thus should allow for lower error at higher magnetic fields. The anticipated frequency of the cavity was confirmed verifying others measurements of the dielectric constant tensor.

The only problem this coupling was the asymmetry produced from the side port causing several complexities. The Wafer Test Cavity was altered from its original design as a result of the data from the dielectric.

The sapphire was heating faster than anticipated and thus the ratio of sample to cavity surface had to be increased.

The reason the additional focusing was to reduce the amount of stored energy in the cavity, thus limiting the dissipation in the cavity. With a ratio of 10 to 1 the stored energy was reduced by a factor of 6. The Wafer Cavity and its field distribution is shown below. The goal of this cavity is to produce magnetic fields at or beyond the BCS limit of Niobium mT so that thin film heterostructures can be evaluated to their full potential.

The Wafer Test cavity is funded by the Department of Energy and is in the process of final design and beginnings of construction. The polyhedral cavity is a superconducting cavity structure in which a multi-cell cavity is built from a Roman-arch assembly of arc segments.

Each segment has a Tesla-like r-z profile, and is fabricated either by bonding a Nb foil to a Cu substrate wedge or by depositing a Nb surface on the Cu substrate. The segments are assembled with an arrangement of locking rings and alignment pins, with a controlled narrow gap between segments over much of the arc-span of adjoining segments.

A tubular channel is machined in the mating surfaces of the Cu wedges. Languages German. Price Free. App Support Privacy Policy. Family Sharing With Family Sharing set up, up to six family members can use this app. More By This Developer. SRF News. SRF Meteo - Wetter. You Might Also Like. Swisscom blue Cinema. ARD Audiothek. Organization chart. Superconducting radio-frequency SRF cavities became the modern state-of-the-art acceleration choice for the majority of current and planned particle accelerators due to their unmatched capability to provide continuous-wave CW acceleration, as well as to minimize the beam-cavity interaction to preserve the superior beam properties.

Powerful SRF accelerators are currently in operation worldwide, and new upcoming ones are also taking advantage of this enabling technology.