Fast Switching Ferroelectric Materials for Accelerator Applications

Journal Article · Mon Nov 27 00:00:00 EST 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2409151· OSTI ID:20898688

Kanareykin, A; Schoessow, P ^[1]; Nenasheva, E ^[2]; Yakovlev, V ^[3]; Dedyk, A; Karmanenko, S; Kozyrev, A; Osadchy, V; Kosmin, D; Semenov, A ^[4]

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1. Euclid Techlabs LLC, Solon, OH 44139 (United States)
2. Ceramics Co. Ltd, St.Petersburg 194223 (Russian Federation)
3. Omega-P Inc., New Haven, CT 06511 (United States)
4. St. Petersburg Electrical Engineering University, St. Petersburg 197376 (Russian Federation)

Fast switching (<10 nsec) measurement results on the recently developed BST(M) (barium strontium titanium oxide composition with magnesium-based additions) ferroelectric materials are presented. These materials can be used as the basis for new advanced technology components suitable for high-gradient accelerators. A ferroelectric ceramic has an electric field-dependent dielectric permittivity that can be altered by applying a bias voltage. Ferroelectric materials offer significant benefits for linear collider applications, in particular, for switching and control elements where a very short response time of <10 nsec is required. The measurement results presented here show that the new BST(M) ceramic exhibits a high tunability factor: a bias field of 40-50 kV/cm reduces the permittivity by a factor of 1.3-1.5. The recently developed technology of gold biasing contact deposition on large diameter (110 cm) thin wall ferroelectric rings allowed {approx}few nsec switching times in witness sample experiments. The ferroelectric rings can be used at high pulsed power (tens of megawatts) for X-band components as well as at high average power in the range of a few kilowatts for the L-band phase-shifter, under development for optimization of the ILC rf coupling. Accelerator applications include fast active X-band and Ka-band high-power ferroelectric switches, high-power X-band and L-band phase shifters, and tunable dielectric-loaded accelerating structures.

• OSTI ID: 20898688
• Journal Information: AIP Conference Proceedings, Vol. 877, Issue 1; Conference: 12. advanced accelerator concepts workshop, Lake Geneva, WI (United States), 10-15 Jul 2006; Other Information: DOI: 10.1063/1.2409151; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM COMPOUNDS
CERAMICS
CONTROL ELEMENTS
DEPOSITION
ELECTRIC FIELDS
ELECTRIC POTENTIAL
FERROELECTRIC MATERIALS
GOLD
LINEAR COLLIDERS
MAGNESIUM ADDITIONS
OPTIMIZATION
PERMITTIVITY
PHASE SHIFT
RF SYSTEMS
STRONTIUM COMPOUNDS
SWITCHES
TITANIUM OXIDES
WAVEGUIDES