Alignment Software from the ME perspective Marcus Hohlmann

Alignment Software from the ME perspective Marcus Hohlmann Florida Tech Muon Alignment during CMS week 15, March 2005 15, M. Hohlmann - Muonmeeting alignment meeting, CMS- CERN, week, March CERN,

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,

Reminder: EMU geometry and optical alignment (DCOPS) Transfer plates and lasers DCOP sensors SLMs COCOA v 2. 0 (from R. Lee’s thesis) M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15,

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

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,

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,

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

Typical Calibration Data Absolute R-Sensor Response vs. Distance: V(x) Fit line: V(x) = ax + b V(x) = 2. 0548 x – 96. 068 σ(a) = 0. 000657 σ(b) = 0. 0325 M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15,

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,

Progress with COCOA • Fl. Tech students installed and use COCOA v 3. 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,

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

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,