Tests of Coordinate Transfer from Magnetic to Mechanical Reference for LCLS Undulator Fiducialization | Zendy

Y. Levashov | Zendy

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Tests of Coordinate Transfer from Magnetic to Mechanical Reference for LCLS Undulator Fiducialization

Author(s) -

Y. Levashov

Publication year - 2010

Language(s) - English

Resource type - Reports

DOI - 10.2172/1000390

Subject(s) - fixture , magnet , undulator , fiducial marker , quadrupole magnet , physics , calibration , point (geometry) , quadrupole , position (finance) , test fixture , optics , acoustics , mechanical engineering , computer science , engineering , geometry , mathematics , artificial intelligence , atomic physics , radiation , finance , quantum mechanics , economics

Fiducialization of the LCLS undulators will be based on magnetic measurements by Hall probe. Pointed magnets, proposed by I.Vasserman for quadrupole lens fiducialization will be used as an intermediate reference. A prototype of the pointed magnet fixture has been made and tested. In this note we will describe a procedure for measuring the position of the center of the Hall probe sensitive area with respect to the undulator fiducial marks. The pointed magnet calibration procedure, a two-point algorithm for locating the magnetic center of the fixture, and test results are presented

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