New Low-Loss Ferroelectric Materials for Accelerator Applications
- Euclid Techlabs LLC, Solon, OH 44139 (United States)
- Ceramics Co. Ltd, St. Petersburg 194223 (Russian Federation)
- St. Petersburg Electrical Engineering University, St. Petersburg 197376 (Russian Federation)
- Omega-P Inc., New Haven, CN 06511 (United States)
We present results on a new ferroelectric material based on bulk low-loss BST (Barium-Strontium Titanium oxides) compounds especially developed for accelerator applications. We have demonstrated suitable nonlinear dielectric properties of this material that make it useful for switching and tuning RF accelerator components. The material exhibits a dielectric constant of 400-500 and tunability factor of 1.2. The best sample of those studied demonstrated a loss factor <4x10-3 at 35 GHz. Ferroelectric rings and substrates are key components required for electrically controlled switches and phase shifters for active pulse compressors for future linear colliders. A thin ferroelectric layer incorporated into a dielectric loaded accelerating structure allows compensation of any frequency shift caused by ceramic waveguide machining tolerances and dielectric constant heterogeneity. A tuning range of 1.1% has been demonstrated for an X-Band (11-13 GHz) dielectric accelerating structure.
- OSTI ID:
- 20655195
- Journal Information:
- AIP Conference Proceedings, Vol. 737, Issue 1; Conference: 11. advanced accelerator concepts workshop, Stony Brook, NY (United States), 21-26 Jun 2004; Other Information: DOI: 10.1063/1.1842656; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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