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WEPA11 |
Design of Monochromatic and White Beam Fluorescence Screen Monitors for XAIRA Beamline at the ALBA Synchrotron |
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- J.M. Álvarez, C. Colldelram, N González, J. Juanhuix, J. Nicolás, I. Šics
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
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XAIRA, the hard X-ray microfocus beamline at ALBA, includes three monochromatic fluorescence screens and one water cooled white beam monitor in its layout, mounting respectively YAG:Ce and polycrystalline CVD diamond as scintillator screens. All monitors share the same design scheme, with a re-entrant viewport for the visualization system that allows reducing the working distance, as required for high magnification imaging. The scintillator screen assembly is held by the same CF63 flange, making the whole system very compact and stable. The re-entrant flange is driven by a stepper motor actuated linear stage that positions or retracts the screen with respect to the beam path. To cope with high power density (18, 6 W/m2) on the white beam monitor 100 µm-thick diamond screen, an InGa-based cooling system has been developed. The general design of the new fluorescence screens, to be used also in other ALBA’s upcoming beamlines, with particular detail on the water-cooled white beam monitor, is described here.
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Poster WEPA11 [0.913 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPA11
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About • |
paper received ※ 25 July 2021 paper accepted ※ 19 October 2021 issue date ※ 04 November 2021 |
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WEPA14 |
All Applications of the ALBA Skin Concept |
259 |
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- A. Crisol, A. Carballedo, C. Colldelram, N González, J. Juanhuix, J. Nicolás, L.R.M. Ribó, C. Ruget
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
- L.W.S. Adamson
ASCo, Clayton, Victoria, Australia
- J.B. González Fernández
MAX IV Laboratory, Lund University, Lund, Sweden
- E.R. Jane
FMB Oxford, Oxford, United Kingdom
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During the ALBA design phase, the protein macromolecular protein crystallography beamline, XALOC, required several in-house developments. The major part of these designs was at the end station where the necessity of customization is always much higher. The most relevant of these instruments was the beam conditioning elements table [1]. This accurate stage, which supports the diffractometer as well, includes the four movements required to align the components to the nominal beam as well as position the diffractometer. This design compacts, especially the vertical and pitch movements, both in a single stage, with a couple of stages for all four excursions. The solution maximise the stiffness and preserves at the same time the resolution close to 0.1µm while being able to withstand a half tone of payload. Thanks this compactness and performances this design concept, the vertical and pitch combined stage, was not only applied at XALOC for its diffractometer and detector table, but it has been widely adapted at several ALBA beamlines: at NCD-SWEET [2] as a detector table, a beam conditioning elements table [3] and sample table, at MSPD beamline as the KB table, at NOTOS beamline as metrology table, and also at the new ESA MINERVA beamline [4] for their sample mirror modules positioning. Beamlines have not been the only beneficiaries of this design, also different kind of instrumentation like an hall probe measuring bench [5], and even a stitching platform for the ALBA optics laboratory [6]. Moreover, the concept has outreach ALBA and has been adopted also at other facilities worldwide, synchrotrons and also scientific instrumentation suppliers around Europe. This poster presents most of the applications of the skin concept and their variations and main measured performances.
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Poster WEPA14 [2.221 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPA14
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About • |
paper received ※ 29 July 2021 paper accepted ※ 22 October 2021 issue date ※ 09 November 2021 |
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Export • |
reference for this paper using
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※ LaTeX,
※ Text/Word,
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