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An Active
Microphonics Control System--Energen,
Inc., 17 D Sterling Road, Billerica, MA 01862-2518;
978-671-5400
Dr. Chad Joshi,
Principal Investigator, chad@energeninc.com
Dr. Chad Joshi,
Business Official, chad@energeninc.com
DOE Grant No.
DE-FG02-01ER83348
Amount:
$100,000
Microphonic
excitation in SRF structures has long been identified as a serious issue for
facilities such as the Continuous Electron Beam Accelerator (CEBAF) at Jefferson
Laboratory and the proposed Rare Isotope Accelerator (RIA). Microphonics occur
when external forces from mechanical, electrical, or cryogenic systems can
become coupled to the RF acceleration structure producing mechanical vibrations
in the cavities. This vibration causes a shift in the resonant frequency making
them less effective in delivering the desired particle acceleration.
Energen, Inc. proposes to develop an active microphonics damping system
based on magnetic ”smart” material actuators and high speed digital signal
processing. These actuators
are designed to operate efficiently at cryogenic temperatures.
In Phase I, Energen, Inc. will develop a prototype actuator, measure its
performance characteristics and sensitivity, and develop a conceptual design for
a control system.
Commercial
Applications And Other Benefits as
described by awardee: Active vibration control is a serious problem in a wide
range of applications. The low
frequency and high amplitude damping capability that will be developed under
this program will be valuable for semiconductor processing equipment and other
sensitive instrumentation such as electron or tunneling microscopes, etc.