trd production at gsi joerg hehner trd collaboration meeting bucharest 26.09.2005
TRANSCRIPT
TRD Production at GSI
Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005
Overview
Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005
- Status L5C1/L4C1
- Glue System
- Testing the Properties
- Summary
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
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
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
11 Radiators Frames glued
5 Radiator Frames wired
5 Padplanes glued
Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005
Production Status L4C1
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
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
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
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
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
CONCLUSION
Joerg Hehner TRD Collaboration Meeting Bucharest 26.09.2005
- Orderd and distributed Hardener
to finished the TRD Production
- Additional Ageing Test
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
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