Geometry of the LHC short straight sections before installation in the tunnel: Resulting aperture, axis and BPM positioning

Author

Missiaen, D. ; Bestmann, P. ; Buzio, M. ; Fartoukh, S. ; Giovannozzi, M. ; Jeanneret, B. ; Lombardi, A. ; Papaphilippou, Y. ; Perez, J.C. ; Pauletta, S. ; Prin, H. ; Wildner, E.

Author_Institution

CERN, Geneva

fYear

2007

fDate

25-29 June 2007

Firstpage

335

Lastpage

337

Abstract

The large hadron collider short straight sections (SSS) are currently being installed in their final position in the accelerator tunnel. For all the SSSs, both those in the regular arcs as well as those in the insertion regions, magnetic axis and geometric measurements are made at different steps of their assembly. These stages range from production in the industry to the cryostating at CERN, as well as during and after cold tests or during installation of the BPM/beam screen assembly. The results of the geometry at the various production stages by means of different procedures and analysis tools are reported and discussed in details in this paper.

Keywords

accelerator magnets; cryostats; particle beam diagnostics; storage rings; synchrotrons; BPM; CERN; LHC SSS; accelerator tunnel; beam positioning monitor; cryostating; geometry; large hadron collider short straight sections; magnet geometry; magnetic axis; Apertures; Assembly; Boring; Flanges; Geometry; Lamination; Large Hadron Collider; Position measurement; Production; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2007. PAC. IEEE

Conference_Location

Albuquerque, NM

Print_ISBN

978-1-4244-0916-7

Type

conf

DOI

10.1109/PAC.2007.4440203

Filename

4440203