1 james n. bellinger 4-feb-2009 me+1 status and endcap z james n. bellinger university of wisconsin...

1James N. Bellinger 4-Feb-2009

ME+1 status and Endcap ZME+1 status and Endcap Z

James N. Bellinger

University of Wisconsin at Madison

4-Feb-2009


Endcap Z MeasurementsEndcap Z Measurements

Do we believe IR Z-sensor results?

1. MAB sensor position

2. Offsets to IR target

3. IR sensor data

4. Compare with expected


MAB Sensor PositionMAB Sensor Position

Relying on Celso’s fits for the two sensor centers

Extrapolate slightly to IR sensor radius—effect is small


Offsets to TargetOffsets to Target

Calibrated numbers for distance from PG4 to base of sensor: taken from Link SDF file

Thickness of skin: varies from 3.04 to 3.14mm: I use 3.14

Thickness of target: ignored


IR sensor PositionIR sensor Position

Field Off to On changes look similar, if include dips

.6

.3


Comparing w/ Ideal Transfer PlateComparing w/ Ideal Transfer Plate

Name Nom Ideal 0T 3.8T Ideal-Nom 0T-Nom Y 3.8T-Nom

distancemeter_p11 6847.70 6847.701 6847.4537 6848.3519 0.001 -0.2463 0.6519

distancemeter_p12 6847.70 6847.7006 6846.3914 6848.7085 0.0006 -1.3086 1.0085

distancemeter_p13 6847.70 6847.6995 6845.4289 6848.169 -0.0005 -2.2711 0.469

distancemeter_p14 6847.70 6847.6997 6851.6001 6852.4654 -0.0003 3.9001 4.7654

distancemeter_p15 6847.70 6847.6997 6851.5236 6849.6702 -0.0003 3.8236 1.9702

distancemeter_p16 6847.70 6847.7012 6862.781 6863.5609 0.0012 15.081 15.8609


Using PG-corrected Transfer PlateUsing PG-corrected Transfer Plate

Name ZPG Hand 0T Fit 0THand

3.8TFit 3.8T

Fit0-ZPG

Fit3.8-ZPG

Fit0-Hand0

Fit3.8-Hand3.8

dm_p11 6848.48 6847.42 6847.4537 6849 6848.3519 -1.0263 -0.1281 0.0332 -0.6506

dm_p12 6845.73 6846.48 6846.3914 6849.58 6848.7085 0.6614 2.9785 -0.0893 -0.8742

dm_p13 6847.53 6845.37 6845.4289 6848.26 6848.169 -2.1011 0.639 0.0626 -0.0893

dm_p14 6850.03 6851.54 6851.6001 6852.68 6852.4654 1.5701 2.4354 0.0609 -0.2138

dm_p15 6843.18 6851.11 6851.5236 6849.75 6849.6702 8.3436 6.4902 0.4094 -0.084

dm_p16 6847.36 6864.27 6862.781 6864.04 6863.5609 15.421 16.2009 -1.4844 -0.4755


Using PostCraft Tilt/ShiftUsing PostCraft Tilt/Shift

Name ZPG Hand 0T Fit 0THand

3.8T

Fit 3.8T Fit0-PG Fit3.8-PG Fit0-Hand0Fit3.8-

Hand3.8

dm_p11 6847.40 6847.42 6847.4537 6849 6848.3519 0.0537 0.9519 0.0332 -0.6506

dm_p12 6838.98 6846.48 6846.3914 6849.58 6848.7085 7.4114 9.7285 -0.0893 -0.8742

dm_p13 6841.76 6845.37 6845.4289 6848.26 6848.169 3.6689 6.409 0.0626 -0.0893

dm_p14 6850.80 6851.54 6851.6001 6852.68 6852.4654 0.8001 1.6654 0.0609 -0.2138

dm_p15 6849.88 6851.11 6851.5236 6849.75 6849.6702 1.6436 -0.2098 0.4094 -0.084

dm_p16 6853.39 6864.27 6862.781 6864.04 6863.5609 9.391 10.1709 -1.4844 -0.4755


Conclusions wrt Endcap ZConclusions wrt Endcap Z

None at the moment.

Not sure if Distancemeter at Pt6 is reading correctly

Not sure why the others shift so much when trying to take disk tilt into account


Z positions w/o CocoaZ positions w/o Cocoa

Illustrate w/o Cocoa

Know MAB 2D sensor position

Know distance to distancemeter

Know ME1/2 2D sensor position

Using chamber geometry, predict ME1/3 positions


ME+1 Z positions: HSLM1 Field onME+1 Z positions: HSLM1 Field on

Position of Reference DCOPS Center• 6665.74 MAB

• +34.2675 To target, calibrated+skin thickness

• +148.983 Distancemeter distance

• -24.424 DM dowel to DCOPS dowel, CAD

• -41.27 DCOPS dowel to DCOPS center, CAD

• 6783.291 Expected CMS z


Z Position of ME12 DCOPS centerZ Position of ME12 DCOPS center

Contributions• 6631.44 Celso ASPD Z of chamber at PG4

• 3.92 effect of chamber tilt

• 135.8 offset PG4 to surface of chamber

• -41.35 offset DCOPS dowel to surface

• 41.276 offset DCOPS center to dowel

• 6771.09 Expected CMS Z


U/D data wrt CenterU/D data wrt Center

-0.879 Reference

1.398 1_3_03 outer

-0.780 1_3_03 inner

0.790 1_2_02 reference (upside down)


Predicting Z at 1_3_03Predicting Z at 1_3_03

Slope of laser line = .004938

Intercept = 6747.847

3_03 outer 6781.552

3_03 inner 6773.043

Offset to surface85.44

Surface Z at 3_03 outer 6868.39

Surface Z at 3_03 inner 6857.70

10.7mm change??


Comparing w/ PGComparing w/ PG

-697.44 coded target at center of 3_03

7565.6 PostCraft Z center of YE+1

6868.16 PG est for average (center)

6868.39 My est for outer

6857.70 My est for inner

Outer is close to reference

Suggests that outer Z is good, inner Z needs work

Est changes to 6866.7 for PG if I include tilts

1 james n. bellinger 4-feb-2009 me+1 status and endcap z james n. bellinger university of wisconsin...

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