alignment software from the me perspective marcus hohlmann florida tech muon alignment meeting...
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Alignment SoftwareAlignment Softwarefrom the ME perspectivefrom the ME perspective
Marcus Hohlmann
Florida Tech
Muon Alignment meeting during CMS week - CERN, March 15, 2005
3/15/2005 M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005
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Purpose of this talkPurpose 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
3/15/2005 M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005
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Reminder: EMU geometry and Reminder: EMU geometry and optical alignment (optical alignment (DCOPSDCOPS))
COCOA v2.0(from R. Lee’s thesis)
DCOP sensors
SLMs
Transfer plates and lasers
3/15/2005 M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005
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EMU geometry and EMU geometry and analog alignment sensorsanalog alignment sensors
Future version of COCOAbeing developed at Fl. Tech
R-sensors
Z-sensors
Note: only smallsample of sensorsshown
Clinometers
3/15/2005 M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005
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Our TasksOur 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
3/15/2005 M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005
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Calibration bench: R, Z Calibration bench: R, Z
4 types of prod. plates
2 types of prod. towers
R-sensor: wire extension pot.
R-sensor
Z-sensors
Linear mover
dowel pins for DCOP sensors
Stand
3/15/2005 M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005
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Calibration bench:Calibration bench:ClinometerClinometer
Mirror
Clinometer
3/15/2005 M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005
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Typical Calibration DataTypical Calibration Data
Fit line: V(x) = ax + b
V(x) = 2.0548x – 96.068
σ(a) = 0.000657
σ(b) = 0.0325
Absolute R-Sensor Response vs. Distance: V(x)Absolute R-Sensor Response vs. Distance: V(x)
3/15/2005 M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005
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Example of Example of Calibration RecordCalibration Record
=> This needs to find its way into a calibration data base: How exactly ?
3/15/2005 M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005
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Progress with COCOA 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
3/15/2005 M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005
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My simplistic viewMy simplistic view
Feeding ME alignment data into reconstructionFeeding ME alignment data into reconstruction
Optical & analogsensor data
in some database
COCOAMBLinkME
Some form ofAlignmentdata base
ORCAreconstruction
• what data exactly ? • what format ?• what data base framework ?• update frequency ? …
CSCgeometry
data
TRACKS
Questions that I have for peoplefrom Link & Barrel alignment groups:
? ?
3/15/2005 M. Hohlmann - Muon alignment meeting, CMS week, CERN, March 15, 2005
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Need communication!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!