Can a Nb_3Sn cavity exceed the gradient of the best niobium cavities? · revision history

Revision 2

Accepted · core change · record

Changes against revision 1:

Title · changed
Revision 1: Can a Nb3Sn cavity exceed the gradient of the best niobium cavities
Revision 2: Can a $\mathrm{Nb_3Sn}$ cavity exceed the gradient of the best niobium cavities?
Plain · changed
Revision 1: The goal of Nb3Sn is to go beyond niobium, but so far niobium still holds the gradient record. The question is whether any Nb3Sn cavity can beat it.
Revision 2: The goal of $\mathrm{Nb_3Sn}$ is to go beyond niobium, but so far niobium still holds the gradient record. The question is whether any $\mathrm{Nb_3Sn}$ cavity can beat it.
Precise · changed · core
Revision 1: Determine whether a Nb3Sn-coated 1.3 GHz elliptical cavity can sustain $E_{\mathrm{acc}}>0.45\,\mathrm{MV}/\mathrm{cm}$ ($B_{\mathrm{pk}}>1900\,\mathrm{G}$) at any temperature with $Q_{0}>1e10$, or whether intrinsic film properties (grain boundaries, thin-film thermal limits) forbid it.
Revision 2: Determine whether a $\mathrm{Nb_3Sn}$-coated 1.3 GHz elliptical cavity can sustain $E_{\mathrm{acc}}>0.45\,\mathrm{MV}/\mathrm{cm}$ ($B_{\mathrm{pk}}>1900\,\mathrm{G}$) at any temperature with $Q_{0}>10^{10}$, or whether intrinsic film properties (grain boundaries, thin-film thermal limits) forbid it.
Settled by · changed · core
Revision 1: A Nb3Sn cavity test exceeding the Nb record gradient, or a demonstrated intrinsic bound below it.
Revision 2: A $\mathrm{Nb_3Sn}$ cavity test exceeding the Nb record gradient, or a demonstrated intrinsic bound below it.
Kind
well-posed
Answer type
yes-no
References
(empty)
Literature status
open
Status note
(empty)
Posed since
(empty)

Decisions