1. TRD Production at GSI Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005

2. Overview Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005 - Status L5C1/L4C1 - Glue System - Testing the Properties - Summary

3. 30 Radiators Frames glued 21 Radiator Frames wired 23 Padplanes glued 2 Padplanes bad Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005 Production Status L5C1

4. 19 Moduls tested with Fe55 Source Closed with Tape Gas ArCO 2 70/30 HV-Anode 1620 V, HV-Drift -2000 V O 2 Concentration below 30ppm, Flush 40l/h, 8h up to know Dark Current < 1nA Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005 Testing Status L5C1

5. Finally glued Chamber 2 Modul tested with Roentgen Source Gas ArCO 2 70/30 HV-Anode 1620 V, HV-Drift -2000 V O 2 Concentration below 10ppm, Flush 40l/h, 8h up to know Dark Current < 1nA Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005 Testing Status L5C1

6. 11 Radiators Frames glued 5 Radiator Frames wired 5 Padplanes glued Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005 Production Status L4C1

7. 1 Moduls tested with Fe55 Source Closed with Tape Gas ArCO 2 70/30 HV-Anode 1620 V, HV-Drift -2000 V O 2 Concentration below 30ppm, Flush 40l/h, 8h up to know Dark Current < 1nA Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005 Testing Status L4C1

8. Problem with Glue System Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005 - Used Araldit AW 106/AW116 with Hardener HV953U - Sticky surface after curing time - Problem in Producing Hardener HV 953 U since 2004

9. Decision Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005 - Stop the TRD Production Mechanical and electrical Properties Chemical Composition was changed - Get a Charge of an modifcated Hardener to test the mech. and electr. Properties

10. Test mechanical Properties Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005 - cured Glue min. 24h under different climatic Conditions Shore Hardness is 60 - Observed Different Surface Quality, it depends on the Huminidity and the retention time in Air Humidity rel. 2% - 50% Temperature 23 º C – 40 º C one Sample cured in Nitrogen Atmosphere

11. Test Electrical Properties Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005 - under different Climatic Conditions Volume Resistivity 300 G – 8 T Ohm cm Humidity rel. 2% - 50% Temperature 23 º C – 40 º C one Sample has cured in Nitrogen Atmosphere

12. CONCLUSION Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005 - Orderd and distributed Hardener to finished the TRD Production - Additional Ageing Test

13. SUMMARY Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005 - Delay of 6 weeks in the Production Scale - 4 L5C1and 4 L4C1 finished to shipped to HD End of October - Production Mode to build 2 TRD Chambers / 7 Working Days

14. Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005 Thank you Sandra Schwab, Anja B. Steffen Gert Augustinski, Andre Radu, Heinz W. Daues and all the Students