Sensors applications within the research framework of the PACMAN project on metrology for particle accelerators at CERN

Arpaïa, Pasquale; Artoos, Kurt; Buzio, Marco; Caiazza, Domenico; Lasheras, Nuria Catalán; Chérif, Ahmed; Doytchinov, Iordan; Fuchs, Jean-Frédéric; Gaddi, A.; Munoz, Natalia Galindo; Gayde, J.-Ch.; Kamugasa, Solomon William; Durand, Hélène Mainaud; Modena, M.; Novotny, Peter; Russenschuck, Stephan; Sanz, Claude; Severino, Giordana; Tshilumba, D.; Vlachakis, Vasileios; Wendt, M.; Zorzetti, Silvia

doi:10.1109/sas.2016.7479854

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…Components are pre-aligned relative to each other using a Coordinate Measuring Machine (CMM) before the modules are installed within the CLIC tunnel. This technique has been developed and demonstrated as part of the PACMAN project [13][14][15]. To accommodate manufacturing errors in the structures and girders the pre-alignment system requires a resolution of <1 μm over a range of 3 mm.…”

Section: Module Designmentioning

confidence: 99%

Design and optimisation of the Compact Linear Collider main LINAC module for micron-level stability and alignment

Capstick

Doebert

Aicheler

et al. 2022

Nuclear Instruments and Methods in Physics Research Section A:

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Section: Module Designmentioning

confidence: 99%

Design and optimisation of the Compact Linear Collider main LINAC module for micron-level stability and alignment

Capstick

Doebert

Aicheler

et al. 2022

Nuclear Instruments and Methods in Physics Research Section A:

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“…For the proposed international linear collider (ILC) and the compact linear collider (CLIC), for example, whose alignment specifications cannot yet be met, most attention has been given to the measurement strategy and systems [18,19]. For the ILC, an automatic train is being tested to survey the alignment network [20]; for the CLIC project, several measurement systems are being integrated on a test bench [21]. The specific effect of network geometry on the alignment of a particle accelerator remains unsolved.…”

Section: Alignment Network Designmentioning

confidence: 99%

Engineering survey planning for the alignment of a particle accelerator: part II. Design of a reference network and measurement strategy

Leão

Baldo

Reis

et al. 2018

Meas. Sci. Technol.

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The building blocks of particle accelerators are magnets responsible for keeping beams of charged particles at a desired trajectory. Magnets are commonly grouped in support structures named girders, which are mounted on vertical and horizontal stages. The performance of this type of machine is highly dependent on the relative alignment between its main components. The length of particle accelerators ranges from small machines to large-scale national or international facilities, with typical lengths of hundreds of meters to a few kilometers. This relatively large volume together with micrometric positioning tolerances make the alignment activity a classical large-scale dimensional metrology problem. The alignment concept relies on networks of fixed monuments installed on the building structure to which all accelerator components are referred. In this work, the Sirius accelerator is taken as a case study, and an alignment network is optimized via computational methods in terms of geometry, densification, and surveying procedure. Laser trackers are employed to guide the installation and measure the girders’ positions, using the optimized network as a reference and applying the metric developed in part I of this paper. Simulations demonstrate the feasibility of aligning the 220 girders of the Sirius synchrotron to better than 0.080 mm, at a coverage probability of 95%.

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Sensors applications within the research framework of the PACMAN project on metrology for particle accelerators at CERN

Cited by 2 publications

References 9 publications

Design and optimisation of the Compact Linear Collider main LINAC module for micron-level stability and alignment

Design and optimisation of the Compact Linear Collider main LINAC module for micron-level stability and alignment

Engineering survey planning for the alignment of a particle accelerator: part II. Design of a reference network and measurement strategy

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