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Alignment Software Brief Status Report – October 2004

Alignment Software Brief Status Report – October 2004. Marcus Hohlmann Florida Tech. Muon PRS at USCMS EMU meeting - FNAL, Oct 29, 2004. History of “COCOA”. CMS Muon alignment software is centered on: C MS O bject-oriented C ode for O ptical A lignment.

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Alignment Software Brief Status Report – October 2004

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  1. Alignment SoftwareBrief Status Report – October 2004 Marcus Hohlmann Florida Tech Muon PRS at USCMS EMU meeting - FNAL, Oct 29, 2004

  2. History of “COCOA” CMS Muon alignment software is centered on: CMS Object-oriented Code for Optical Alignment • initially developed by Pedro Arce (Santander/CERN) for muon barrel alignment • EMU included by Robert Lee (Purdue) in Ph.D. thesis (version 2.0) • currently still maintained by Pedro • Sara Walker (Fl. Tech) running current version 3.2.1 on UAF at FNAL • includes full EMU (and barrel) geometry description (>4000 objects) • reconstructs muon chamber positions from alignment sensor data • varies positions within uncertainties for best global fit of all positions • propagates uncertainties: sensor positions → chamber positions M. Hohlmann - EMU meeting at Fermilab

  3. Simulation of EMU geometry and optical system Transfer plates and lasers DCOP sensors SLMs COCOA v2.0 (from R. Lee’s thesis) M. Hohlmann - EMU meeting at Fermilab

  4. EMU geometry and analog alignment sensors Z-sensors Clinometers Note: only small sample of sensors shown R-sensors Future version of COCOA M. Hohlmann - EMU meeting at Fermilab

  5. Progress with COCOA at Fl. Tech • COCOA v3.2.1 is successfully running on UAF • Generating reasonable outputs for examples: • Laser hitting 2D sensor • Simple DCOPS sensor calibration bench setup • Two DCOPS reference sensors and a CSC Chamber • Problems to be worked out • Fits fail for some DCOPS examples • Visualization using IGUANA not working yet M. Hohlmann - EMU meeting at Fermilab

  6. Analog Sensors in COCOA • COCOA code includes “distance-meter” objects, which will be adapted so as not to depend on optical components • Distance-meter measures the distance from its center to the center of an object of type “distance-target” along the direction of its Z axis • Distance-targets are currently optical objects in the code • Adapt COCOA so that these objects reflect the behavior of analog R-sensors and Z-sensors (without any dependence on laser lines) • Other analog sensors such as clinometers and transfer plates will also be adapted into the code through pre-existing objects in COCOA such as “optical tiltmeters”. M. Hohlmann - EMU meeting at Fermilab

  7. Feeding alignment data into the reconstruction CSC data COCOA & ORCA Optical & analog sensor data Alignment data base COCOA ORCA reconstruction • what data ? • what format ? • what data base framework ? • update frequency ? TRACKS M. Hohlmann - EMU meeting at Fermilab

  8. Plan • Fl. Tech plans to work on alignment issues: • will contact Pedro Arce • find out how this is implemented for Muon Barrel • work on adapting barrel solution for EMU • Fl. Tech manpower: • Sara Walker; will graduate in May • new Ph.D. student Samir Guragain; will take over COCOA work from Sara • need funding for post-doc and grad student ! M. Hohlmann - EMU meeting at Fermilab

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