Elliptical multipole wiggler facility at the Advanced Photon Source

Journal Article · Wed Feb 01 00:00:00 EST 1995 · Review of Scientific Instruments; (United States)

DOI:https://doi.org/10.1063/1.1145799· OSTI ID:6863557

Montano, P A ^[1]; Knapp, G S; Jennings, G ^[2]; Gluskin, E; Trakhtenberg, E; Vasserman, I B; Ivanov, P M; Frachon, D; Moog, E R; Turner, L R; Shenoy, G K ^[3]; Bedzyk, M J ^[4]; Ramanathan, M; Beno, M A ^[2]; Cowan, P L ^[5]

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1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States) Department of Physics, University of Illinois, Chicago, Illinois 60439 (United States)
2. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
3. Experimental Facilities Division, APS, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
4. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States) Department of Materials Science, Northwestern University, Evanston, Illinois 60208 (United States)
5. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

The use of circularly polarized radiation is advantageous for the study of magnetic materials using x-ray scattering techniques. The APS is an ideal source of x-ray radiation for such studies. We present a description of the elliptical multipole wiggler (EMW) [S. Yamamoto, H. Kawata, H. Kitamura, and M. Ando, Phys. Rev. Lett. [bold 62], 2672 (1989)] to be constructed at the APS. This device has been chosen for reasons of tunability and special polarization properties. This insertion device is capable of producing circularly polarized x rays on axis. The EMW period will be [lambda][sub [ital u]]=16 cm, the number of full strength poles in the hybrid structure is 31, and the device length is 2.8 m. The hybrid magnetic structure produces a peak vertical magnetic field with [ital K][sub [ital y]]=14 and the electromagnet provides horizontal magnetic field with [ital K][sub [ital x]]=1--2. The frequency of the horizontal field change is up to 10 Hz. The beamline will consist of three stations operating in tandem with only one station receiving x rays at any one time. The three stations have three distinct functions, namely Compton scattering, magnetic scattering, and surface scattering. Special considerations will be made to insure the proper control of the polarization when using circular polarized light. The design of the elliptical multipole wiggler beam line will follow an approach very close to that developed by Kawata [ital et] [ital al]. [Rev. Sci. Instrum. [bold 60], 1885 (1989)]. Our objective is to obtain a high photon flux with energies above 40 keV and well characterized polarization.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6863557
• Journal Information: Review of Scientific Instruments; (United States), Vol. 66:2; ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
ADVANCED PHOTON SOURCE
WIGGLER MAGNETS
DESIGN
MULTIPOLES
POLARIZATION
RADIATION FLUX
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
MAGNETS
RADIATION SOURCES
SYNCHROTRON RADIATION SOURCES
440600* - Optical Instrumentation- (1990-)