1. 24 April 2009Hans Postema - CERN Tracker Upgrade meeting CO2 cooling tests and progress

2. CO2 cooling Distributed effort in many different places Lot of progress everywhere Study and engineering are advancing Some installations are built Some installations are running Some preliminary results 24 April 2009Hans Postema - CERN

3. Participating places (1) Aachen – Lutz Feld, Michael Wlochal Lyon – Nick Lumb, Didier Contardo Karlsruhe – Wim de Boer et al. Fermilab – Simon Kwan, Richard Schmitt, Terry Tope 24 April 2009Hans Postema - CERN

4. Participating places (2) CERN Cryolab – Friedrich Haug, Jihao Wu, Torsten Koettig, Christopher Franke University Esslingen – Walter Czarnetzki, Stefan Roesler CERN DT group – Joao Noite, Antti Onnela, Paolo Petagna 24 April 2009Hans Postema - CERN

5. Participating places (3) PSI – Roland Horisberger, Stefan Koenig CERN CMS – Paola Tropea, Hans Postema 24 April 2009Hans Postema - CERN