Details

Autor(en) / Beteiligte

• Pant, L M

Titel

Resistive Plate Chambers for the RE4 upgrade of the CMS endcap system

Ist Teil von

• Journal of instrumentation, 2012-10, Vol.7 (10), p.1-7, Article P10025

Erscheinungsjahr

2012

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• It is proposed to install the fourth endcap (RE4) consisting of Resistive Plate Chambers (RPCs) for the Compact Muon Solenoid (CMS) muon endcap system, in order to improve its Level-1 trigger efficiency and thereby completing the full implementation of the Technical Design Report (TDR). This station will be installed in the first long shutdown of the Large Hadron Collider (LHC) during 2013-2014. With lessons learnt from the earlier installation of the RPCs, several modifications in the new construction and test procedures have been recommended for this upgrade. The prototypes for the upgrade were assembled in 2011, thereby giving the green signal for mass production for bakelite and gas gaps. This paper also discusses the standardisation of leak and spacer tests for the bakelite gas-gaps, the new design for the Cu cooling system, the data base and the preparedness at the three assembly sites at CERN, Mumbai and Ghent.