Novel Comprehensive UHV Lens Changer at the PETRA III Beamlines P22, P23 and P24
| Autor: | Raabe, Jana, Ederer, Katrin, Grifone, Raphael, Novikov, Dmitri, Schlüter, Christoph |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| DOI: | 10.18429/jacow-medsi2018-thph39 |
| Popis: | The design of a compact UHV-compatible X-ray transfocator for beryllium compound refractive lenses (CRL) is presented. CRLs are nowadays commonly applied as focusing elements in a lot of techniques based on synchrotron radiation. Aim of the current project was the development of a low-maintenance lens changer for beam focusing, collimation and aperture matching. The paper describes the new lens changer designs for the reliable use under ultrahigh vacuum conditions. Precise and reproducible alignment is achieved by pneumatic actuators that press the lens stacks against a high precision prism. All actuators and position sensors are placed outside the UHV vessel. Alignment is facilitated by integrated beam monitors and alignment apertures. We discuss two variants of the device, one designed for 2D lenses and the other one operating with 1D lenses. In the current version, the 2D lens changer adapts 12 stacks of up to 8 single lenses each, and the 1D variant ' 8 single lenses or apertures. Proceedings of the Mechanical Eng.~Design of Synchrotron Radiation Equipment and Instrumentation, MEDSI2018, Paris, France |
| Databáze: | OpenAIRE |
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