Uncertainty analysis of a vibrating-wire system for magnetic axes localization

Arpaïa, Pasquale; Caiazza, Domenico; Petrone, Carlo; Russenschuck, Stephan

doi:10.1109/icsenst.2015.7438371

Cited by 1 publication

(1 citation statement)

References 15 publications

(27 reference statements)

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“…This interference of the dipole eigen-mode takes its minimum when the wire is positioned on the BPM electrical zero axis [28]. The vibrating wire method was applied and further developed to determine the MBQ magnetic axes [29].…”

Section: Fiducializationmentioning

confidence: 99%

CLIC pre-alignment — status and remaining challenges

Kemppinen

Rude

Durand

et al. 2021

Meas. Sci. Technol.

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The Compact Linear Collider (CLIC) is a study of a 3 TeV linear electron-positron (e + e − ) accelerator and is a successor candidate for CERN's Large Hadron Collider. The CLIC luminosity target is 5.9 × 10 34 cm −2 s −1 , which causes unprecedented pre-alignment requirements of its main linear accelerator (main linac). Along the 50 km long tunnel, the main components of any 200 m long section have to be positioned within 10 µm from a straight reference line. The pre-alignment challenge has been studied at CERN since the 1990s, and the main technical challenges have been solved. This article summarizes the positioning strategy and presents it to an audience outside the particle accelerator community. The methods can be of interest especially in the field of large-scale metrology. The positioning strategy consists of several steps or subsystems. The development of a straight reference line over tens of kilometers allows absolute positioning of accelerator components, while a process called fiducialization defines component reference axes with regard to alignment targets. Emphasis is on a support pre-alignment network that acts as a link between the straight reference line and fiducialization. The subsystems and remaining challenges in their development are presented. The chosen strategy's potential is demonstrated experimentally by building a short test setup.

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Section: Fiducializationmentioning

confidence: 99%