SCT-v1, http://atlas.kek.jp/sub/poster/index.html. ATLAS SCT Collaboration: Australia, Czech, Germany, Japan, Netherlands, Norway, Poland, Russia, Slovania, Spain, Sweden, Switzerland, UK, US, CERN. Specifications (Barrel part only)
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ATLAS SCT Collaboration: Australia, Czech, Germany, Japan, Netherlands, Norway, Poland, Russia, Slovania, Spain, Sweden, Switzerland, UK, US, CERN
Specifications (Barrel part only)
Sensor: 8448 Sensors, 63.56 x 63.96x 0.285 mm3, p-in-n single sided
strip pitch 80 mm, implant width 16-20 mm, total area = 34.4 m2
full depletion < 150V (initial), <350V (after 3x1014p/cm2)
Module: 2112 modules, Stereo angle: 40 mrad
TPG thermal conductor (UK), Flexible hybrid circuit (Japan)
12 ABCD chips (BiCMOS ASIC)/module, 1536 ch, 5000 bondings
assembly accuracy < 5-1 mm control
Cylinder: 4 cylinders, r = 30-52cm , |η|<1.4
Radiation: 3×1014 n/cm2 (10 years), Operating Temperature: -7C
Fabrications: 2600 modules by 980 Japan, UK, US and Scandinavia
1996-2000 Testing of radiation hardness using KEK PS beams
1996-1998 Cooling test at KEK
Radiation damage estimation
Instrumentations at KEK clean room
2001 Final sensor design
Japan provided 6000 sensors
Module assembly (2001-2004)
Design and fabrication of the readout hybrid
High precision assembly fixtures by KEK
KEK designed the flexible Cu/Polyimide circuit with Nippon Mektron LTD
Hybrid assembly in Seiko Precision LTd.
Automatic wire bonding, about 5000 bonding/module at Hamamatsu/Seiko
3D measurement station for alignment at Hamamatsu/Seiko.
Pattern of glue points on the VHCPG base-board
3-axis dispensing workstation
Assembly microscope unit for sensor alignment developed by KEK
Alignment accuracy between front and back sensor planes versus module number. Best achievement among 4 regions !!
Leakage current distribution after module assembly at 350 V.
>95% yield, the best among 4 regions !!
Japan made 980 modules
Module production took full 3 years
System assembly and commissioning (2004-2006)
2000.12 Module mounting robots tested by KEK
2004-05 Modules mounted on 4 cylinders at Oxford University using KEK robots
2006.5 cosmic-ray track observed at SR1 !
2006.2 SCT-TRT docking successfully done at CERN SR1using assembly tools designed and fabricated by KEK