English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present the RF measurement results for a 1.3 GHz single-cell cavity fabricated at KEK made from large grain ingot niobium with RRR=107. The cavity reached ~35 MV/m with a Q0 ~ 2.0×1010 at 2.0 K, which is a record performance for a cavity made from medium purity ingot niobium. The cavity was cooled down with different temperature gradients along its axis in order to understand the flux expulsion mechanism when the cavity goes through the superconducting transition, and to investigate the effect of trapped magnetic fields on the residual resistance. The measurements revealed excellent flux expulsion with a flux trapping sensitivity of 0.29 n/mG for an electro-polished surface and 0.4 n/mG for the cavity followed by a low temperature baking at 120 oC for 24 hours.

Evaluation of High Performance Large Grain Medium Purity SRF Cavity From KEK