Alignment Software from the ME perspective

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