TRD Production at GSI
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Transcript of TRD Production at GSI
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TRD Production at GSI
Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005
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Overview
Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005
- Status L5C1/L4C1
- Glue System
- Testing the Properties
- Summary
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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
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19 Moduls tested with Fe55 Source
Closed with Tape
Gas ArCO2 70/30
HV-Anode 1620 V, HV-Drift -2000 V
O2 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
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Finally glued Chamber
2 Modul tested with Roentgen Source
Gas ArCO2 70/30
HV-Anode 1620 V, HV-Drift -2000 V
O2 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
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11 Radiators Frames glued
5 Radiator Frames wired
5 Padplanes glued
Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005
Production Status L4C1
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1 Moduls tested with Fe55 Source
Closed with Tape
Gas ArCO2 70/30
HV-Anode 1620 V, HV-Drift -2000 V
O2 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
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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
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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
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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 NitrogenAtmosphere
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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
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CONCLUSION
Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005
- Orderd and distributed Hardener
to finished the TRD Production
- Additional Ageing Test
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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
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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