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Department of Semiconductor Detectors

Department of Semiconductor Detectors. HEPHY Scientific Advisory Board. Mission Statement. Design, construction and testing of silicon sensors and detector modules. Operate the semiconductor laboratory (a.k.a. “clean room”). List of Members. Scientific (5 FTE):

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Department of Semiconductor Detectors

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  1. Departmentof SemiconductorDetectors Thomas Bergauer HEPHY Scientific Advisory Board

  2. Mission Statement • Design, construction and testing of silicon sensors and detector modules • Operate the semiconductor laboratory (a.k.a. “clean room”) Thomas Bergauer

  3. List of Members • Scientific(5 FTE): • Thomas Bergauer (Belle, CMS, ILC) • AIDA WP9.4 convener • Marko Dragicevic (CMS) • CEC convener • Michael Hoch (CERN, CMS) • Josef Hrubec(CMS) • Manfred Krammer(CMS) • CMS Conference Committee Chair • Austrian RECFA representative • Students • Two PhD students: Manfred Valentan(Belle), Stephan Hänsel(ILC) • Three master students: Wolfgang Treberspurg, Maria Bernard-Schwarz (CMS), Erik Huemer(CMS) • Technicians (0.75 FTE): • Dieter Uhl(0.25 FTE, technical college) • Margit Oberegger(0.5 FTE) Thomas Bergauer

  4. Present Activities • Construction of the Belle II Silicon Vertex Detector (SVD) • Double sided silicon sensors: design and negotiation with companies • Electrical characterization • Module assembly, beam tests, gamma-Irradiation • R&D for CMS Tracker Upgrade: CEC collaboration • New sensor design: strixel sensors • New methods of connecting readout chip to sensor • Neutron irradiation at Vienna nuclear reactor • Development of radiation-hard silicon sensors with Austrian semiconductor company • Silicon Detectors for an International Linear Collider experiment • SiLC collaboration: Sensor Design, electrical characterization, testbeams • Associated member of EUDET, Full member of AIDA (start 2011) Thomas Bergauer

  5. Expertise: Sensor Design • Sensor design • Design is programmed and automatically drawn • Self-programmed software framework • Collaboration with detector producers • Hamamatsu, Micron, ITE Warsaw • Microscopic and spectroscopic analysis to verify actual processed sensor • Collaboration with Center for Electron Microscopy at TU Vienna Thomas Bergauer

  6. Expertise: Electrical Characterisation Available Setups: • Global IV, CV measurements • Fully automatic strip-by-strip measurements performed by motorized XYZ-table • Cold chuck to test at different temperatures Goals are: • Quality assurance for mass production (e.g. CMS, soon Belle II) • Report back to producer • Select good sensors for module production Thomas Bergauer

  7. Expertise: Module Construction • Tasks to perform: • Gluing, metrology, wire-bonding • Modules for • CMS Tracker mass production • Trapezoidal prototype modules for Belle II Thomas Bergauer

  8. Expertise: Beam Tests • Regular beam tests to test sensors and modules • Usually at CERNs SPS secondary beam lines • In cooperation with HEPHY electronics group and international colleagues (SiLC, EUDET) • Different main goals: • 2008: resolution studies of sensors with different layout (ILC) • 2009: performance of double metal layers for routing purpose (CMS) • 2010: performance of double sided sensors with different p-stop patterns (Belle II) Thomas Bergauer

  9. New Expertise: Neutron-Irradiation • Irradiation of silicon sensors at TRIGA Mark II nuclear reactor at ATI Vienna (“Atominstitut der TU Wien”) • Easy access • High neutron flux • Test of silicon sensors: • For CMS upgrade R&D • n- vs. p-type substrate • Float zone vs. mCz vs. Epitaxial material • First in-situ temperature measurement of nuclear reactor’s irradiation channels • Necessary to know for the understanding of the annealing behavior in silicon sensors Thomas Bergauer

  10. New Expertise: Gamma-Irradiation • Irradiation of prototype Belle II modules at Co-60 source in Mol, Belgium • Test of • Silicon sensors • readout electronics, • voltage regulators, temp/humidity sensors • Joint effort of semiconductor/electronics department Thomas Bergauer

  11. Expertise: Analysis • Baby sensors using 3 different inter-strip isolation layout on n-side Thomas Bergauer

  12. Main Fields of Expertise: 2009 2009: Full cyclefromdesign to resultscompletedwithinoneyear! Electrical Characterisation Module Construction Double metal-layer Sensor Design Suggestions for Improvement: Modifications in Processing Testbeam: 19-31. August 2009 Analysis Thomas Bergauer

  13. Main Fields of Expertise: 2010 2010: Full cyclefrom design to resultscompletedwithinoneyearagain! New Sensor Design for Belle II Electrical Characterisation New Modules Inter-strip isolation layout must be improved Testbeam: 27. Sept to 11. Oct. 2010 Thomas Bergauer

  14. Timeline of Papers, Talks and Posters Thomas Bergauer

  15. Summary • Department of semiconductor detectors is fully integrated in research projects: • CMS Tracker construction, R&D for upgrade • Belle II: silicon sensors, modules, beam tests • Silicon Sensors for ILC • Close collaboration with electronics department since many developments are done together (e.g. module construction) • Good sharing of manpower: • Permanent staff carry expertise • Students for diploma/master and PhD theses Thomas Bergauer

  16. Tak! Danke! Grazie! Thanks! Tracker Integration 2007 Visit to Infineon Villach 2009 Testbeam CERN 2009 Thomas Bergauer

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