Construction and performance of BL28 of the Photon Factory for circularly polarized synchrotron radiation

Journal Article · Wed Jan 01 00:00:00 EST 1992 · Review of Scientific Instruments; (United States)

DOI:https://doi.org/10.1063/1.1143102· OSTI ID:5411291

Kagoshima, Y; Muto, S; Miyahara, T; Koide, T; Yamamoto, S; Kitamura, H ^[1]

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1. Photon Factory, National Laboratory for High Energy Physics, 1-1 Oho, Tsukuba-shi, Ibaraki-ken 305 (Japan)

A branch beamline, BL28A, has been constructed for the application of circularly polarized vacuum ultraviolet radiation. The radiation can be obtained in the helical undulator operation mode of an insertion device, EMPW{number sign}28, which is also cut for elliptically polarized hard x-ray radiation. T first harmonic of the helical undulator radiation can be tuned from 40 to 350 eV with its corresponding {ital K} value from 3 to 0.2. A monochromator working basically with constant deviation optics was installed, and has started its operation. A circularly polarized flux of {similar to}10{sup 10} photons/s has been achieved with energy resolution of around 500--1000 at the first harmonic peak. The circular polarization after the monochromator was estimated to be higher than 70% by comparing theory and experiment on the magnetic circular dichroism of nickel films in the 3{ital p}-3{ital d} excitation region. The design philosophy of the beamline and recent results on the performance tests are presented.

• OSTI ID: 5411291
• Journal Information: Review of Scientific Instruments; (United States), Vol. 63:1; ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
KEK PHOTON FACTORY
SYNCHROTRON RADIATION SOURCES
HARD X RADIATION
BEAM OPTICS
DESIGN
EXPERIMENTAL DATA
MONOCHROMATORS
PERFORMANCE TESTING
POLARIMETERS
POLARIZATION
POLARIZED BEAMS
BEAMS
DATA
ELECTROMAGNETIC RADIATION
INFORMATION
IONIZING RADIATIONS
NUMERICAL DATA
RADIATION SOURCES
RADIATIONS
TESTING
X RADIATION
430303* - Particle Accelerators- Experimental Facilities & Equipment
430400 - Particle Accelerators- Storage Rings