PAC09 - List of Authors (Nenasheva, E.)

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Nenasheva, E.

Paper	Title	Page
TU5PFP009	Ferroelectric Based High Power Components for L-Band Accelerator Applications	824
	A. Kanareykin, P. Schoessow Euclid TechLabs, LLC, Solon, Ohio S. Kazakov KEK, Ibaraki E. Nenasheva Ceramics Ltd., St. Petersburg V.P. Yakovlev Fermilab, Batavia
	Funding: This work was supported by the US Department of Energy Euclid TechLabs LLC is developing BST based ferroelectric elements designed to be used as the basis for new advanced accelerator components operating in the 1.3 GHz frequency range and intended for Project X and ILC applications. These new ferroelectric elements are designed for the fast active tuner for SC cavities that can operate in air at low biasing DC fields in the range of 15 kV/cm. The BST(M) material (BST ferroelectric with Mg-based additives) allows fast switching and tuning in vacuum and in air both; switching time of material samples < 10 ns has been demonstrated. The overall goal of the program was to design an L-band externally-controlled fast ferroelectric tuner for controlling the coupling of superconducting RF cavities for the future linear colliders. The tuner prototype has been built; a time response of <30 ns, or 1 deg. in 0.5 ns has been reached. . The following problems are addressed: (i) lowering the losses in the ferroelectric material; (ii) improving the technique of the ferroelectric element metallization and brazing; and (iii) improvement breakdown threshold at high voltage bias.

Paper

Title

Page

TU5PFP009

Ferroelectric Based High Power Components for L-Band Accelerator Applications

824

A. Kanareykin, P. Schoessow
Euclid TechLabs, LLC, Solon, Ohio
S. Kazakov
KEK, Ibaraki
E. Nenasheva
Ceramics Ltd., St. Petersburg
V.P. Yakovlev
Fermilab, Batavia

Funding: This work was supported by the US Department of Energy

Euclid TechLabs LLC is developing BST based ferroelectric elements designed to be used as the basis for new advanced accelerator components operating in the 1.3 GHz frequency range and intended for Project X and ILC applications. These new ferroelectric elements are designed for the fast active tuner for SC cavities that can operate in air at low biasing DC fields in the range of 15 kV/cm. The BST(M) material (BST ferroelectric with Mg-based additives) allows fast switching and tuning in vacuum and in air both; switching time of material samples < 10 ns has been demonstrated. The overall goal of the program was to design an L-band externally-controlled fast ferroelectric tuner for controlling the coupling of superconducting RF cavities for the future linear colliders. The tuner prototype has been built; a time response of <30 ns, or 1 deg. in 0.5 ns has been reached. . The following problems are addressed: (i) lowering the losses in the ferroelectric material; (ii) improving the technique of the ferroelectric element metallization and brazing; and (iii) improvement breakdown threshold at high voltage bias.