1 / 18

VELO Module PRR

VELO Module PRR. T. Bowcock. Overview. Project Module Specifications Summary of Current Status Details of Production: Session IV (NAS) Issues Transition to Production Summary. Project. Resources LSDC Staff Management Oversight Tools Process Control Gantt Risk.

elverar
Download Presentation

VELO Module PRR

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. VELO Module PRR T. Bowcock

  2. Overview • Project • Module Specifications • Summary of Current Status • Details of Production: Session IV (NAS) • Issues • Transition to Production • Summary Themis Bowcock - PRR

  3. Project • Resources • LSDC • Staff • Management • Oversight • Tools • Process Control • Gantt • Risk Themis Bowcock - PRR

  4. Project: Resources • PPARC (1998-2006) • ~1.1MChf hardware including R&D • 42 Si Modules and cables (no large number spares) • Note PPARC not paying for FE Chips • R&D ~250kChf or 50kCHf/yr to 2005 • Some experiments spent more on spare module boxes than our R&D! • Limited ability to produce early prototypes and modules • Liverpool/HEFCE and JIF • Liverpool Semiconductor Detector Centre infrastrure • Limited funding from Department ~50kChf • Experiment • Lausanne purchased PR-02 detectors – no additional funding • Industrial Collaboration • Hamamatsu (Student) • Micron (Collaboration on R&D) • Stevenage (R&D) Themis Bowcock - PRR

  5. Project: LSDC Themis Bowcock - PRR

  6. Project: LSDC Themis Bowcock - PRR

  7. Project: Staffat Liverpool *University College Dublin Themis Bowcock - PRR

  8. Management: Oversight Themis Bowcock - PRR

  9. Management: Tools • Process Control • See talk by G.D.Patel in Session V • Gantt • Risk Register Themis Bowcock - PRR

  10. Management: Gantt • Gantt Charts are available and used • Production to PRR • Single Module Production • Stages linked to text in Summary of production • Multiple Module Production Themis Bowcock - PRR

  11. Project: Risk Register Themis Bowcock - PRR

  12. Module Specifications: • From TDR/EDR and folklore • Geometry • R sensors must be positioned within 20 um (gauss sigma) in X and Y of the nominal position relative to the base. • R sensors must be positioned within 100 um (gauss sigma) in Z of the nominal position relative to the base.  • Phi sensors must fit within tolerances given by RF foil.  • The positioning has no further requirements, but the actua position must be known to an accuracy of about 10 um relative to the R sensor.  Themis Bowcock - PRR

  13. ModuleSpecification • Temperature • The sensors operate at a nominal operational temperature of -5 C. Max 5C.  Themis Bowcock - PRR

  14. ModuleSpecification • Outgassing • outgas_one_module < 1e-4 mbar liter / s after approx 4 hours in vacuum.  • A pump-down curve (pressure vs time) for a full module should  Themis Bowcock - PRR

  15. Module Specification • Electrical • The module should be designed to sustain up to 600 V in vacuum @ < 1e-4mbar.  • Channels lost • Sensors (20)  • Final module max 25/side  () • 1.1% bad channels Themis Bowcock - PRR

  16. Issues • Transition from 8090 to 710 production whilst retaining capability of both • Is the 8090 serviceable in production? • Yield on PA’s dropping again (-> 60%) • Cables • Final module alignment (?) • Shortage of sensors • …. See Tony Smiths talk Themis Bowcock - PRR

  17. Production Preparation • Prototype phase to production • Change of culture • However ATLAS endcap assembled here • Minimize risk to components • Maintain speed Themis Bowcock - PRR

  18. Summary • Not yet at PR • See Tony Smiths talk for estimate of times • Weeks rather than months • See results and modules for yourselves • Substantial progress since EDR in Apr 05 • Extra effort and concentration of resources (post ATLAS) are speeding up production, testing and tooling @ Liverpool Themis Bowcock - PRR

More Related