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Progress and Challenges in SSD Module Production for ALICE Experiment by Gert-Jan Nooren

This report details the advancement of SSD modules for the ALICE experiment, emphasizing the production challenges and testing strategies around 2003. Key components include the design parameters of the HAL25 chips, robots for module assembly, and insights from beam tests conducted at CERN. Improvements in the process control and yield, using testing infrastructures in Helsinki, Trieste, and Strasbourg, are highlighted. Critical issues with sensor quality and the integration of read-out chains further shape the project's trajectory toward mass production.

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Progress and Challenges in SSD Module Production for ALICE Experiment by Gert-Jan Nooren

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  1. Gert-Jan Nooren

  2. ITS SSD in 2003 Gert-Jan Nooren

  3. SSD modules on ladder Gert-Jan Nooren

  4. highlights in 2003 start of module production assembly robot for ladders control, read-out, DAQ beam test Gert-Jan Nooren

  5. HAL25 status • Design parameters ‘on the edge’ -> highly sensitive to process parameters -> MPW yield 50, 98, 8 % • Improved process control -> Engineering run yield 85 - 95 % • Thinning down to 150µm for better radiation length in progress Gert-Jan Nooren

  6. components of the modules HAL25-chip TAB-bonded on its Al chipcable (6 chips/hybrid) 2.Hybrids (2 hybrids/mod) 3.sensor (768 strips/side) Gert-Jan Nooren

  7. ALICE SSD Module Gert-Jan Nooren

  8. Module scanner • laser 1.06 mm wavelength • positioning ~1.5 mm • spot diameter < 20 mm Aleksey Sokolov

  9. Readout of the modules P-Hybrid control ALCAPONE ALCAPONE Sensor Vbias analog out N-Hybrid ALABUF ALCAPONE EndCap FEROM Gert-Jan Nooren

  10. Assembly robot Pick & place robot for modules Automatic positioning to a few micrometers Acceptance test 19 December Gert-Jan Nooren

  11. September 2003 beam testPrototype 4-module EndCap Gert-Jan Nooren

  12. September 2003 beam test5 module telescope Gert-Jan Nooren

  13. September 2003 beam testsS/N for 4 modules Canberra sensor ITC sensor P P P P Module SN0002 Module SN0003 Module HN0001 Module HN0002 N N N N Very preliminary - provided by Trieste team Gert-Jan Nooren

  14. Status and plans Beam tests • Integration in real Cern environment: read-out chain proven up to ADC • Sensor quality problem revealed: Canberra takes action • ITS = SPD + SDD + SSD beamtest end 2004 Gert-Jan Nooren

  15. Status and plans Beam tests • Integration in real Cern environment: read-out chain proven up to ADC • Sensor quality problem revealed: Canberra takes action • ITS = SPD + SDD + SSD beamtest end 2004 Module production • Helsinki is bonding chips at production speed • 2 + 7 modules produced, yield and speed ‘unknown’ • Testing infrastructure for chips and hybrids fully operational • Strasbourg and Trieste (MIPOT) starting in Q1 Gert-Jan Nooren

  16. Status and plans Beam tests • Integration in real Cern environment: read-out chain proven up to ADC • Sensor quality problem revealed: Canberra takes action • ITS = SPD + SDD + SSD beamtest end 2004 Module production • Helsinki is bonding chips at production speed • 2 + 7 modules produced, yield and speed ‘unknown’ • Testing infrastructure for chips and hybrids fully operational • Strasbourg and Trieste (MIPOT) starting in Q1 Read-out • EndCap ready for mass production • FEROM design ready, first prototype Q2 • Patchpanels and cables layout almost frozen Gert-Jan Nooren

  17. Status and plans Beam tests • Integration in real Cern environment: read-out chain proven up to ADC • Sensor quality problem revealed: Canberra takes action • ITS = SPD + SDD + SSD beamtest end 2005 Module production • Helsinki is bonding chips at production speed • 2 + 7 modules produced, yield and speed ‘unknown’ • Testing infrastructure for chips and hybrids fully operational • Strasbourg and Trieste (MIPOT) starting in Q1 Read-out • EndCap ready for mass production • FEROM design ready, first prototype Q2 • Patchpanels and cables layout almost frozen Assembly • First ladder Q1/Q2 • Module testing with laser set-up Gert-Jan Nooren

  18. June 2003 beam testsmodule SN0003 Charge matching P N Gert-Jan Nooren

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