1 / 12

Alignment Software from the ME perspective

Alignment Software from the ME perspective. Marcus Hohlmann Florida Tech. Muon Alignment meeting during CMS week - CERN, March 15, 2005. Purpose of this talk. Brief update on activities at Florida Tech on ME alignment (hardware & software)

Download Presentation

Alignment Software from the ME perspective

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. Alignment Softwarefrom the ME perspective Marcus Hohlmann Florida Tech Muon Alignment meeting during CMS week - CERN, March 15, 2005

  2. Purpose of this talk • Brief update on activities at Florida Tech on ME alignment (hardware & software) • Make contact with barrel and link people to coordinate work on software side: • Database work: framework, define data,… • Handling of calibration data • Running COCOA • Getting ready for magnet test M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005

  3. Reminder: EMU geometry and optical alignment (DCOPS) Transfer plates and lasers DCOP sensors SLMs COCOA v2.0 (from R. Lee’s thesis) M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005

  4. EMU geometry and analog alignment sensors Z-sensors Clinometers Note: only small sample of sensors shown R-sensors Future version of COCOA being developed at Fl. Tech M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005

  5. Our Tasks • Fl. Tech has agreed to the following tasks: • Calibrate 200+ ME analog sensors (R, Z, Clino.) • Incorporate calib. data into appropriate data base • Develop COCOA so that analog sensors are included for EMU • Help to set up and maintain data base for alignment constants that feed into reconstruction • Use COCOA to produce alignment constants for • ME magnet test • ME commissioning and first data M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005

  6. Calibration bench: R, Z R-sensor: wire extension pot. 2 types of prod. towers R-sensor Z-sensors dowel pins for DCOP sensors 4 types of prod. plates Linear mover Stand M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005

  7. Calibration bench:Clinometer Clinometer Mirror M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005

  8. Typical Calibration Data Absolute R-Sensor Response vs. Distance: V(x) Fit line: V(x) = ax + b V(x) = 2.0548x – 96.068 σ(a) = 0.000657 σ(b) = 0.0325 M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005

  9. Example of Calibration Record => This needs to find its way into a calibration data base: How exactly ? M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005

  10. Progress with COCOA • Fl. Tech students installed and use COCOA v3.2.1 on Fermilab UAF cluster (with much help from Pedro Arce and Robert Lee - thanks !!) • Generated reasonable outputs for example geometries • Reproducing COCOA simulation of ISR test • Incorporating analog sensors as “distance meters” • Next: Run realistic SLM on road to aligning full ME • Problems to be worked out • Often encountering singular matrices and failed fits • Visualization using IGUANA not working yet M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005

  11. My simplistic view CSC geometry data Feeding ME alignment data into reconstruction ? ? Optical & analog sensor data in some database Some form of Alignment data base COCOA MB Link ME ORCA reconstruction Questions that I have for people from Link & Barrel alignment groups: TRACKS • what data exactly ? • what format ? • what data base framework ? • update frequency ? … M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005

  12. Need communication! • Have tried to find out current status, plans, and people involved in corresponding data base and software tasks for Link and Barrel over last month: • Not very successful… • Either I haven’t found the right people yet, or nobody is working on this (which I can’t believe) • If you are the “right” person to talk to, please contact me: hohlmann @ fit.edu • We are willing to help with the software and data base work, but we need to “get in the loop” to be of help to the alignment group. • I could meet in person with people coming to CMS Physics week at FNAL (April 11-13) to talk ! Thanks! M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005

More Related