The design of a Variable Polarization Undulator (EPU) of the four row, pure permanent magnet undulator and a length of 3.8 m is presented. The design requirements and mechanical difficulties for holding, positioning, and driving the magnetic arrays are explored. The structural and magnetic considerations that influenced the design are then analyzed. This undulator will be installed on a new beam line for materials science research, designated BL13 at Stanford Synchrotron Radiation Laboratory (SSRL) BL13 is being designed for the photon energy range from 250 to 1600 eV, and to utilize an undulator source that produces linear polarized radiation at variable azimuthal angles as well as both left and right circularly and elliptically polarized radiation.
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19 January 2007
SYNCHROTRON RADIATION INSTRUMENTATION: Ninth International Conference on Synchrotron Radiation Instrumentation
28 May-2 June 2006
Daegu (Korea)
Research Article|
January 19 2007
Development of a 3.8 Meter Variable Polarization Undulator (EPU)
Alex Deyhim;
Alex Deyhim
†Advanced Design Consulting USA, 126 Ridge Road, P.O. Box 187, Lansing, NY 14882
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Aaron Lyndaker;
Aaron Lyndaker
†Advanced Design Consulting USA, 126 Ridge Road, P.O. Box 187, Lansing, NY 14882
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Dave Waterman;
Dave Waterman
†Advanced Design Consulting USA, 126 Ridge Road, P.O. Box 187, Lansing, NY 14882
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Dave Caletka;
Dave Caletka
†Advanced Design Consulting USA, 126 Ridge Road, P.O. Box 187, Lansing, NY 14882
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Michael Rowen;
Michael Rowen
*Stanford Linear Accelerator Center, 2575 Sand Hill Road, Menlo Park, CA 94025
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Thomas Rabedeau;
Thomas Rabedeau
*Stanford Linear Accelerator Center, 2575 Sand Hill Road, Menlo Park, CA 94025
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K. Ingvar Blomqvist
K. Ingvar Blomqvist
Consultant
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AIP Conf. Proc. 879, 392–395 (2007)
Citation
Alex Deyhim, Aaron Lyndaker, Dave Waterman, Dave Caletka, Michael Rowen, Thomas Rabedeau, K. Ingvar Blomqvist; Development of a 3.8 Meter Variable Polarization Undulator (EPU). AIP Conf. Proc. 19 January 2007; 879 (1): 392–395. https://doi.org/10.1063/1.2436082
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