Status of PETRA III photon beamline frontends and optical systems

• Published in: Journal of physics. Conference series Vol. 425; no. 4; pp. 42005 - 6
• Main Authors: Schulte-Schrepping, H, Degenhardt, M, Peters, H-B, Hahn, U, Heuer, J, Hesse, M
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.01.2013
• Subjects: Beams (radiation); Emittance; Filing; Focusing; Monitors; Optical components; Particle physics; Photons; Physics; Slits
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/425/4/042005

The status of the PETRA III photon beamline frontend components and major optical components will be reported. In the frontend, the design of filter systems, high power slit systems, beam position monitors and CVD screens followed a generic approach. This allows the use of the same components in four single undulator and five canted undulator sectors with a total of 14 beamlines. A generic cryogenically cooled high heatload monochromator has been developed and installed at the beamlines. Large mirror systems for higher harmonic suppression, collimation and basic focusing have been tailored towards the need of the specific beamline. The goal of a 1% top-up operation with 100 mA, and the 1 nmrad emittance operation of PETRA III has been achieved and is provided in the user runs. The beamline and optics concepts proved to be robust and versatile during the commissioning and the user operation of all beamlines. The components and systems are now further developed for enhancing the capabilities of the beamlines