For controlling niobium properties for the fabrication of superconducting cavity, the system for quick measurement of Nb thermal conductivity and residual ratio RRR are created. Thermal conductivity test can be done in a 100 l transport liquid helium tank. A DC RRR measurement for Nb samples and a specially developed AC method for nondestructive RRR measurement of the cavities in situ are presented. Thermal conductivity, RRR distribution and the microstructure of electron-beam welding seam of high purity niobium are investigated
Large grain niobium has good thermal conductivity at 2 K temperature because of the phonon peak, whi...
Abstract Fermilab is developing superconducting RF cavities of the bulk Niobium (Nb) type. Several p...
The use of large grains or single crystal niobium to improve the Q factor of superconducting rf cavi...
For controlling niobium properties for the fabrication of superconducting cavity, the system for qui...
The evaluation of purity and thermal conductivity at liquid Helium temperatures of the Niobium to be...
Abstract Thermal conductivity measurements of niobium sheets manufactured for deepdrawing of superco...
International audienceA test facility, allowing the test of 4 samples simultaneously during each run...
The thermal conductivity, DC magnetization and penetration depth of large-grain niobium hollow cylin...
Superconducting rf cavities used as accelerating structures in particle accelerators are made from h...
Electron beam (EB) welding in UHV (ultra-high vacuum, 10(-5) divided by 10(-8) mbar) is applied in t...
High purity Nb for Tesla Test Facility (TTF) cavities should meet well specified tight requirements....
The thermal conductivity, DC magnetization and penetration depth of large-grain niobium hollow cylin...
Electron beam (EB) welding in UHV (ultra-high vacuum, 10 -5÷10 -8 mbar) is applied in the standard f...
Superconducting rf cavities used as accelerating structures in particle accelerators are made from h...
The electrical resistivities and absolute Seebeck coefficients of 99.8 at. % niobium with a RRR of 3...
Large grain niobium has good thermal conductivity at 2 K temperature because of the phonon peak, whi...
Abstract Fermilab is developing superconducting RF cavities of the bulk Niobium (Nb) type. Several p...
The use of large grains or single crystal niobium to improve the Q factor of superconducting rf cavi...
For controlling niobium properties for the fabrication of superconducting cavity, the system for qui...
The evaluation of purity and thermal conductivity at liquid Helium temperatures of the Niobium to be...
Abstract Thermal conductivity measurements of niobium sheets manufactured for deepdrawing of superco...
International audienceA test facility, allowing the test of 4 samples simultaneously during each run...
The thermal conductivity, DC magnetization and penetration depth of large-grain niobium hollow cylin...
Superconducting rf cavities used as accelerating structures in particle accelerators are made from h...
Electron beam (EB) welding in UHV (ultra-high vacuum, 10(-5) divided by 10(-8) mbar) is applied in t...
High purity Nb for Tesla Test Facility (TTF) cavities should meet well specified tight requirements....
The thermal conductivity, DC magnetization and penetration depth of large-grain niobium hollow cylin...
Electron beam (EB) welding in UHV (ultra-high vacuum, 10 -5÷10 -8 mbar) is applied in the standard f...
Superconducting rf cavities used as accelerating structures in particle accelerators are made from h...
The electrical resistivities and absolute Seebeck coefficients of 99.8 at. % niobium with a RRR of 3...
Large grain niobium has good thermal conductivity at 2 K temperature because of the phonon peak, whi...
Abstract Fermilab is developing superconducting RF cavities of the bulk Niobium (Nb) type. Several p...
The use of large grains or single crystal niobium to improve the Q factor of superconducting rf cavi...