The Finnish CMS Collaboration

The Finnish CMS Collaboration

• Helsinki Institute of Physics S. Czellar, A. Heikkinen, J. Härkönen, V. Karimäki,

H. Katajisto,R. Kinnunen,T. Lampén, K. Lassila-Perini, P. Luukka, S. Lehti, T. Lindén, T. Mäenpää, J. Nysten, J. Tuominiemi, E. Tuominen, D. Ungaro, M. Voutilainen, L. Wendland

• Lappeenranta University of Technology T.Tuuva, T.Palviainen

• Helsinki University of Technology P. Aarnio

HIP CMS Programme

• CMS SOFTWARE AND PHYSICS PROJECT

• CMS TRACKER PROJECT

1. The Tracker Project

CMS Construction:• Support structure of the Tracker Outer Barrel (TOB)• Quality tests of the TOB Silicon detector modules • RPC muon trigger link

R&D:• Development of radiation hard silicon detectors

Tracker Outer Barrel

22.9.2003 Jorma Tuominiemi 11

HIP ”Big Wheel”Prototype 2001

Being ordered now

TOB Support Structure

• The detector modules are assembled on special supports called rods

Tracker Outer Barrel (TOB): Support Structure

• The support rods are being assembled at HIP Kumpula Laboratory. Rod components are purchased from Finnish Industry.• Precision measurements of the rods are done in collaboration with the Laboratory of Machine Design, Helsinki University

of Technology (precision 5 m).

TOB Support Structure

• The results of the precision measurements are stored in the CMS data base for alignment.

• The rods are sent via CERN to the module building labs, where the modules are installed on the rods

• All 5500 modules are to be installed in the wheel by April 2005 .

TOB Silicon Module Tests

• Production of the TOB Silicon detector modules has been launched at CERN, Fermilab and Santa Barbara.

• About 100 ready from a total of 5510.

• Plans for module production at HIPhad to be abandonned in 2001 due to lack of infrastructure and funds

in Finland.