| Title |
Two-rotation Mechanism for an in Vacuum Beamstop |
| Authors |
- J.B. González Fernández, C. Colldelram, A. Fontserè Recuenco, G. Jover-Mañas, J. Ladrera Fernández, M. Malfois, J.C. Martínez Guil
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
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| Abstract |
At Small-angle X-ray Scattering beamlines (SAXS), beamstops are needed to block the intense primary beam that has not been scattered by the sample in order to protect the detector from any damage. Beamstops are usually confined inside a vacuum tube minimizing air space between the sample and the detector. For certain experiments, a motorized beamstop is required to achieve a precise positioning in different regions of the detector active area. ALBA has developed a new motorized beamstop* consisting of a two-rotation mechanism inside vacuum that composes a movement able to cover all range of the active area of the detector. The presented solution involves a main rotation reached by a gear and a worm drive actuated by a stepper motor and a second rotation relative to the main one produced by a piezo rotation stage. For each position appears two different solutions. This characteristic permits take two equivalent images in the detector with the same beamstop position but different orientation in the beamstop support; thus permitting the compensation of the support shadow on the active area of the detector.
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| Footnotes & References |
* Patent Registered |
| Paper |
download WEPE40.PDF [0.585 MB / 3 pages] |
| Poster |
download WEPE40_POSTER.PDF [2.217 MB] |
| Export |
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※ EndNote |
| Conference |
MEDSI2016 |
| Series |
Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation Conference (9th) |
| Location |
Barcelona, Spain |
| Date |
11-16 September 2016 |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editorial Board |
Joan Casas (ALBA-CELLS, Cerdanyola del Vallès, Spain); Volker RW Schaa (GSI, Darmstadt, Germany); Isidre Costa (ALBA-CELLS, Cerdanyola del Vallès, Spain); David López (ALBA-CELLS, Cerdanyola del Vallès, Spain); Montserrat Prieto (ALBA-CELLS, Cerdanyola del Vallès, Spain) |
| Online ISBN |
978-3-95450-188-5 |
| Received |
08 September 2016 |
| Accepted |
16 September 2016 |
| Issue Date |
22 June 2017 |
| DOI |
doi:10.18429/JACoW-MEDSI2016-WEPE40 |
| Pages |
378-380 |
| Copyright |
 Published by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |
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