Fast Ferroelectric L-Band Tuner for Superconducting Cavities

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-09ER85292
Agency Tracking Number: 91292
Amount: $100,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2009
Solicitation Year: 2008
Solicitation Topic Code: 46 a
Solicitation Number: DE-PS02-08ER08-34
Small Business Information
258 Bradley Street, New Haven, CT, 06510
DUNS: 084736651
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Jay Hirshfield
 (203) 789-1164
Business Contact
 George Trahan
Title: Dr.
Phone: (203) 789-1165
Research Institution
The effective use of superconducting cavities in a future high-energy accelerator will require rapid adjustments of coupling between the cavities and the external RF power sources. This coupling is needed to compensate for uncontrolled sources of cavity detuning, such as from mechanical vibrations and/or fluctuations in beam loading. However, the time-response of available RF couplers and tuners is not rapid enough to serve this need. This project will continue the development of a tuner with the potential for rapid variations in cavity coupling to an external RF source. The tuner utilizes ferroelectric elements whose dielectric constant can be varied by application of an external voltage. Phase I will involve the study of design variations for optimizing the performance of this tuner. In Phase II the tuner will be implemented at Brookhaven National Laboratory on 700 MHz cavities that are under development for the energy recovery linac. Commercial Applications and other Benefits as described by the awardee Development of efficient tuners that can rapidly alter the coupling between superconducting cavities and external RF sources could have a strong impact on the design and cost of future systems. Fast tuners also could find application in commercial accelerators for medical therapy and industrial processing, thus lowering their costs.

* Information listed above is at the time of submission. *

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