2nd PACMAN workshop

Session

Metrology and alignment using a wire

15 Jun 2016, 08:15

Debrecen

Conveners

Metrology and alignment using a wire

• Helene Mainaud Durand (CERN)

80. Error sources and mitigation in dimensional metrology

Ben Hughes (NPL)

15/06/2016, 08:15

This short presentation will cover the concept of the metrology loop and introduce some examples of error sources that can affect dimensional measurement systems and how these errors can be mitigated.

90. Evaluation and positioning of the PACMAN reference wire to a sub-micron level

Ms Claude Sanz (CERN)

15/06/2016, 08:35

The PACMAN project's aim is to develop and build a pre-alignment bench on which components are assembled and aligned to the required accuracy using a stretched wire. During the process of this measurement, the centre of a stretched wire is aligned with respect to the reference axis of the components. The Cu-Be wire with a diameter of 0.1 mm considered for this task has been evaluated. The...

71. Improvements of the precision and the reliability of underground geodetic networks by using stretched wires

Prof. Thomas Touzé (HES-SO : UAS Western Switzerland)

15/06/2016, 08:55

In underground geodetic networks, the orientation along the tunnel is generally limited in precision and reliability by, on one hand, the "corridor" configuration of the network and, on the other hand, by lateral refraction effects. As a stretched wire, if it is protected from air drafts, belongs to a section of a catenary function inside a vertical plan, it can be used as a precise and...

100. Recent developments on micro-triangulation for fiducial points and wires

Mr Vasileios Vlachakis (CERN)

15/06/2016, 09:15

In the frame of the Particle Accelerator Components’ Metrology and Alignment to the Nanometre scale (PACMAN) project, we develop the micro-triangulation method for the magnet fiducialization. The wire detection algorithm and the wire reconstruction algorithm are the most important parts of this study. High accuracy robotic theodolites observe the stretched wire, used for the determination of...