Compensation of Beam Line Polarizing Effects at UE112 of BESSY II

Journal Article · Wed Jun 23 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3463205· OSTI ID:21410245

Bahrdt, J; Follath, R; Frentrup, W; Gaupp, A; Scheer, M ^[1]

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1. Helmholtz-Zentrum Berlin, BESSY, Albert-Einstein-Strasse 15, D-12 489 Berlin (Germany)

Reflections in synchrotron radiation beam lines tend to change the state of polarization of the radiation. This effect is more pronounced for steep angle of incidence, i.e. at low photon energy (say below 100 eV) beam lines. The APPLE II undulator UE112 at BESSY has all four magnetic rows shiftable and thus generates any state of polarization. To provide any intended polarization state at the sample we perform polarization measurements based on simple and fast linear polarization analysis that together with calculations of the undulator radiation predicts undulator settings that cancel beam line polarization effects.

• OSTI ID: 21410245
• Journal Information: AIP Conference Proceedings, Vol. 1234, Issue 1; Conference: SRI 2009: 10. international conference on radiation instrumentation, Melbourne (Australia), 27 Sep - 2 Oct 2009; Other Information: DOI: 10.1063/1.3463205; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAMS
BESSY STORAGE RING
INCIDENCE ANGLE
INTERACTIONS
PHOTONS
POLARIZATION
REFLECTION
SYNCHROTRON RADIATION
WIGGLER MAGNETS
BOSONS
BREMSSTRAHLUNG
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EQUIPMENT
MAGNETS
MASSLESS PARTICLES
RADIATIONS
STORAGE RINGS