Reconstruction results of z cms for me 2
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Reconstruction Results of Z CMS for ME+2. Samir Guragain, Marcus Hohlmann Dept. of Physics and Space Sciences, Florida Institute of Technology, Melbourne, FL 32901 CMS Week December 2007 at CERN [EVO]. Outline. Plots for all ME+2 SLMs in Z CMS at B= 0 T & 4T SLM 2-5 in detail

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Reconstruction Results of Z CMS for ME+2

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Reconstruction Results of ZCMS for ME+2

Samir Guragain, Marcus Hohlmann

Dept. of Physics and Space Sciences,

Florida Institute of Technology,

Melbourne, FL 32901

CMS Week December 2007 at CERN [EVO]


Outline

  • Plots for all ME+2 SLMs in ZCMS at B= 0 T & 4T

    SLM 2-5 in detail

    SLM 1-4 in detail

    SLM 3-6 in detail

  • A recent drawing (provided by D. Eartly)

    Implementation of data from the drawings into SDF

  • First version of ME+2 SLM 1-4 plot in Rphi is shown.

Muon Alignment, CMS Week December 2007 - S. Guragain


ME+2 SLM 2-5 in ZCMSwith 10 measurements at B=0T

Note:

Laser path straightened

PROFILE: http://www.hep.wisc.edu/~jnb/cms/10Oct2007/mep2.html

Muon Alignment, CMS Week December 2007 - S. Guragain


Laser hits on CCDs ME+2 SLM 2-5 in ZCMS at B=0T

Muon Alignment, CMS Week December 2007 - S. Guragain


Laser hits & fitted points

Muon Alignment, CMS Week December 2007 - S. Guragain


CSC centers on ME+2 SLM 2-5 in ZCMS at B=0T

2_2_08

Back chamber

NO PG

2_2_27

2_1_04

2_1_14

Muon Alignment, CMS Week December 2007 - S. Guragain


Alignment Pins on ME+2 SLM 2-5 in ZCMS at B=0T

Muon Alignment, CMS Week December 2007 - S. Guragain


Top of the DCOPS on ME+2 SLM 2-5 in ZCMS at B=0T

Muon Alignment, CMS Week December 2007 - S. Guragain


ME+2 SLM 2-5 in ZCMSwith 7 measurements at B=4T

Assuming (Incorrectly) that the TPs do not shift in Z and do not rotate.

i.e analog sensors data are not incorporated yet

Muon Alignment, CMS Week December 2007 - S. Guragain


ME+2 SLM 1-4 in ZCMSwith 10 measurements at B=0T

PROFILE: http://www.hep.wisc.edu/~jnb/cms/10Oct2007/mep2.html

Muon Alignment, CMS Week December 2007 - S. Guragain


Laser hits on CCDs ME+2 SLM 1-4 in ZCMS at B=0T

Muon Alignment, CMS Week December 2007 - S. Guragain


CSC centers on ME+2 SLM 1-4 in ZCMS at B=0T

2_2_20

2_2_03

Back chamber

NO PG

2_1_10

2_1_02

Muon Alignment, CMS Week December 2007 - S. Guragain


Alignment Pins on ME+2 SLM 1-4 in ZCMS at B=0T

Muon Alignment, CMS Week December 2007 - S. Guragain


Top of DCOPS on ME+2 SLM 1-4 in ZCMS at B=0T

Muon Alignment, CMS Week December 2007 - S. Guragain


ME+2 SLM 1-4 in ZCMSwith 10 measurements at B=4T

Assuming (Incorrectly) that the TPs do not shift in Z and do not rotate.

i.e analog sensors data are not incorporated yet

Muon Alignment, CMS Week December 2007 - S. Guragain


Laser hits on CCDs ME+2 SLM 1-4 in ZCMS at B=4T

B=4T

Muon Alignment, CMS Week December 2007 - S. Guragain


CSC centers on ME+2SLM 1-4 in ZCMS at B=0T & 4T

~ 6 mm

~ 14 mm

Muon Alignment, CMS Week December 2007 - S. Guragain


ME+2 SLM 3-6 in ZCMSwith 10 measurements at B=0T

PROFILE:

http://www.hep.wisc.edu/~jnb/cms/10Oct2007/mep2.html

Muon Alignment, CMS Week December 2007 - S. Guragain


Laser hits on CCDs ME+2 SLM 3-6 in ZCMS at B=0T

Muon Alignment, CMS Week December 2007 - S. Guragain


CSC centers on ME+2 SLM 3-6 in ZCMS at B=0T

2_1_08

2_1_16

2_2_15

2_2_32

Back Chamber

NO PG

Muon Alignment, CMS Week December 2007 - S. Guragain


Alignment Pins on ME+2 SLM 3-6 in ZCMS at B=0T

Muon Alignment, CMS Week December 2007 - S. Guragain


Top of DCOPS on ME+2 SLM 3-6 in ZCMS at B=0T

Muon Alignment, CMS Week December 2007 - S. Guragain


ME+2 SLM 3-6 in ZCMSwith 10 measurements at B=4T

Assuming (Incorrectly) that the TPs do not shift in Z and do not rotate.

i.e analog sensors data are not incorporated yet

Muon Alignment, CMS Week December 2007 - S. Guragain


Laser hits on CCDs ME+2 SLM 3-6 in ZCMS at B=4T

Muon Alignment, CMS Week December 2007 - S. Guragain


CSC centers on ME+2SLM 3-6 in ZCMS at B=0T & 4T

~ 6.5 mm

~ 14.5 mm

Muon Alignment, CMS Week December 2007 - S. Guragain


Fit Residuals All SLMs of ME+2

Z resolution 68 micron

Muon Alignment, CMS Week December 2007 - S. Guragain


Fit Pulls

  • Currently hit errors are set to the larger of:

  • 17 micron

  • error on mean of laser profile from MINUIT

Muon Alignment, CMS Week December 2007 - S. Guragain


Discrepancies of top of DCOPS and CSCs against PG

Muon Alignment, CMS Week December 2007 - S. Guragain


Recent drawing

Recent drawings are available on the following link:

http://research.fit.edu/hep/FloridaTech_CMS_ME_Alignment_Page.htm

By D. Eartly

Muon Alignment, CMS Week December 2007 - S. Guragain


ME+2 SLM1-4 in Rphiwith ideal measurements

Ideal

Muon Alignment, CMS Week December 2007 - S. Guragain


Laser hits on CCDs ME+2 SLM 1-4 in Rphi at ideal

Ideal

Muon Alignment, CMS Week December 2007 - S. Guragain


ME+2 SLM 1-4 in Rphi with 10 measurements at B=0T

PROFILE: http://www.hep.wisc.edu/~jnb/cms/10Oct2007/mep2.html

Muon Alignment, CMS Week December 2007 - S. Guragain


Laser hits on CCDs ME+2 SLM 1-4 in Rphi at B=0T

Oct 10, 2007

Muon Alignment, CMS Week December 2007 - S. Guragain


Laser hits & fitted points

Muon Alignment, CMS Week December 2007 - S. Guragain


Summary

  • Reconstruction results of ME+2 SLMs in ZCMS are comparable to Photogrammetry (PG) data at 0T. Positions of top of the DCOPS, coded targets on the skin and alignment pins are compared with PG.

    • Resolution and sensitivity to relative changes 68 micron

    • Accuracy of CSCs and DCOPS 491 micron (against PG)

  • Drawings show the detail view of DCOPS dowel pins and alignment pins wrt CSC center.

  • Reconstruction in Rphi has started to work with correct geometry input.

  • Immediate Item to take care of

    Expand Rphi reconstruction to other SLMs.

Muon Alignment, CMS Week December 2007 - S. Guragain


Back up Slides

Muon Alignment, CMS Week December 2007 - S. Guragain


SLM Configurations:DCOPS Orientations

IN

IN

IN

IN

OUT

OUT

OUT

OUT

IN

IN

4

OUT

OUT

OUT

OUT

IN

IN

IN

IN

IN

IN

5

OUT

IN

OUT

OUT

OUT

IN

IN

IN

IN

IN

6

Muon Alignment, CMS Week December 2007 - S. Guragain


Reminder: ME+2 SLM2-5

Muon Alignment, CMS Week December 2007 - S. Guragain


Recent drawings

By D. Eartly

Muon Alignment, CMS Week December 2007 - S. Guragain


Recent drawings (cont’d)

By D. Eartly

Muon Alignment, CMS Week December 2007 - S. Guragain


Recent drawings (cont’d)

By D. Eartly

Muon Alignment, CMS Week December 2007 - S. Guragain


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