1. DCP 12 May 2010 Jan Godlewski PH-DT-PO 1 DETECTOR COOLING PROJECT WP2 CO2 activities status report Jan Godlewski PH-DT-PO https://espace.cern.ch/CO2/default.aspx

2. DCP 12 May 2010 Jan Godlewski PH-DT-PO 2 Cooling plant for tests  Actual status  Next steps  Missing parts  Tests program

3. DCP 12 May 2010 Jan Godlewski PH-DT-PO 3 Status  Test stand at cryolab  Pressure test (120 bar) done  Chiller connected and tested  Sensors installed and connected to control rack  DAQ checked and debugged  Possibility of remote log-in to follow test stand function  ALICE Silicon Pixel Detector interested in CO2 activities  Claudio Bortolin and Rosario Turrisi have joined CO2 group

4. DCP 12 May 2010 Jan Godlewski PH-DT-PO 4 Minutes from the last meeting

5. DCP 12 May 2010 Jan Godlewski PH-DT-PO 5 P&I

6. DCP 12 May 2010 Jan Godlewski PH-DT-PO 6 CO2 progress and issues on the control system CO2 PLC PVSS UNICOS project creation status: 1 – Excel specification preparation √ 2 – PLC hardware configuration √ 3 – PLC & PVSS instance generation √ 4 – Process logic program preparation √ 5 – Specific functions preparation √ 6 – Code compilation √ 7 – Loading to PLC √ 8 – PVSS Data Server configuration √ 9 – PVSS panels creation √ 10 – Commissioning & operation – began – all sensors values are archived SCADA server Logic Generator Instance Generator Specification SIEMENS PLC From Łukasz

7. DCP 12 May 2010 Jan Godlewski PH-DT-PO 7 CO2 progress and issues on the control system Signal-electrical installation: 1 – Control rack completed √ 2 – Plant frame equipped with cable trays √ 2 – Signals cables in place and 90% connected √ 3 – Power cables in place and connected √ 4 – All sensors,actuators and cables labeled √ 5 – All PT100 connected with additional connector to ensure in case of failure fast sensor replacement √ From Łukasz

8. DCP 12 May 2010 Jan Godlewski PH-DT-PO 8 Missing parts and things to do  Missing parts  Accumulator from NIKHEF  Hans Postema in contact with NIKHEF  We are requesting it for mid of June  Expansion valve for accumulator cooling  Should come these days  Some sensors  Valves extensions for cold running  Still to do  Installing and connecting accumulator  Installing valves extension  Insulation  Final commissioning of control system

9. DCP 12 May 2010 Jan Godlewski PH-DT-PO 9 Summary  CO2 test stand  Test stand ready for “warm” operation  We are waiting for accumulator from NIKHEF  First thing to test will be ATLAS Pixel stave (first half of June)