First powering of the LHC Test String 2

Author

Bordry, Frédérick ; Bozzini, Davide ; Dahlerup-Petersen, Knud ; Denz, Reiner ; Puccio, Bruno ; Rijllart, Adriaan ; Rodriguez-Mateos, Felix ; Saban, Roberto ; Schmidt, Rüdiger ; Serio, Luigi ; Thiesen, Hugues

Author_Institution

CERN, Geneva, Switzerland

Volume

12

Issue

1

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

232

Lastpage

235

Abstract

String 2 is a full-size model of a regular cell in an LHC arc. In the first phase, three dipole magnets and two quadrupole magnets have been assembled in String 2 and commissioning started in April 2001. By the beginning of 2002 three pre-series dipole magnets will be added to complete the cell. As for its predecessor String 1, the facility was built to individually validate the LHC systems and to investigate their collective behavior for normal operation with the magnets at a temperature of 1.9 K, during transients as well as during exceptional conditions. String 2 is a precious milestone before installation and commissioning of the first LHC sector (1/8 of the machine) in 2004, with respect to infrastructure, installation, tooling and assembly procedures, testing and commissioning of individual systems, as well as the global commissioning of the technical systems. This paper describes the commissioning, and retraces the first powering history.

Keywords

accelerator magnets; colliding beam accelerators; proton accelerators; storage rings; superconducting magnets; 1.9 K; LHC Test String; LHC sector; assembly procedures; collective behavior; dipole magnets; global commissioning; infrastructure; installation; quadrupole; tooling; Apertures; Assembly; Circuits; Cryogenics; High temperature superconductors; Large Hadron Collider; Magnets; Prototypes; Switching converters; Testing;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2002.1018389

Filename

1018389