An electrostrictive drive for fine pitch control in double-crystal monochromators.

An electrostrictive drive for fine pitch control in double-crystal monochromators. Research Abstract Details 

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An electrostrictive drive for fine pitch control in double-crystal monochromators. Abstract Text:

A G Shard,V R Dhanak,A D Smith,

Precise control of the pitch angle of the crystals in a double-crystal monochromator is essential to preserve their accurate alignment while the instrument is scanned. Computer-controlled piezoceramic electrostrictive actuators have recently been installed to the top crystal in two monochromators at the Daresbury SRS to facilitate this. This complements the coarser control provided by the existing stepper motor to give an accurate positioning of the crystal alignment over the full rocking-curve width of the crystals. To maintain accurate alignment during a scan, a number of servo feedback options have been devised. In this paper an analysis of the performance of these drives is presented and their utility in a variety of different experimental techniques is discussed.

An electrostrictive drive for fine pitch control in double-crystal monochromators. Publishing Authors By Initials

AG Shard,VR Dhanak,AD Smith,

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An electrostrictive drive for fine pitch control in double-crystal monochromators. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of synchrotron radiation

VOLUME: 5

Page Numbers: 829-31

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ISSN: 0909-0495

DAY: 1

MONTH: 05

YEAR: 1998

An electrostrictive drive for fine pitch control in double-crystal monochromators. Information

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LANGUAGE: eng

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Grant and Affiliation Information for An electrostrictive drive for fine pitch control in double-crystal monochromators.

AFFILIATION: IRC in Surface Science, The University of Liverpool, Liverpool L69 3BX, UK.

Country: Denmark

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MEDLINETA: J Synchrotron Radiat

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