1 James N. Bellinger 4-Feb-2009 ME+1 status and Endcap Z James N. Bellinger University of Wisconsin at Madison 4-Feb-2009

2 James N. Bellinger 4-Feb-2009 Endcap 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

3 James N. Bellinger 4-Feb-2009 MAB Sensor Position Relying on Celso’s fits for the two sensor centers Extrapolate slightly to IR sensor radius— effect is small

4 James N. Bellinger 4-Feb-2009 Offsets 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

5 James N. Bellinger 4-Feb-2009 IR sensor Position Field Off to On changes look similar, if include dips.6.3

6 James N. Bellinger 4-Feb-2009 Comparing w/ Ideal Transfer Plate NameNomIdeal0T3.8TIdeal-Nom0T-Nom Y3.8T-Nom distancemeter_p distancemeter_p distancemeter_p distancemeter_p distancemeter_p distancemeter_p

7 James N. Bellinger 4-Feb-2009 Using PG-corrected Transfer Plate NameZPGHand 0TFit 0T Hand 3.8T Fit 3.8T Fit0- ZP G Fit3.8- ZPG Fit0- Han d0 Fit3.8- Hand3. 8 dm_p dm_p dm_p dm_p dm_p dm_p

8 James N. Bellinger 4-Feb-2009 Using PostCraft Tilt/Shift NameZPG Hand 0T Fit 0T Hand 3.8 T Fit 3.8TFit0-PG Fit3.8- PG Fit0-Hand0 Fit3.8- Hand3. 8 dm_p dm_p dm_p dm_p dm_p dm_p

9 James N. Bellinger 4-Feb-2009 Conclusions 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

10 James N. Bellinger 4-Feb-2009 Z 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

11 James N. Bellinger 4-Feb-2009 ME+1 Z positions: HSLM1 Field on Position of Reference DCOPS Center MAB To target, calibrated+skin thickness Distancemeter distance DM dowel to DCOPS dowel, CAD DCOPS dowel to DCOPS center, CAD Expected CMS z

12 James N. Bellinger 4-Feb-2009 Z Position of ME12 DCOPS center Contributions Celso ASPD Z of chamber at PG4 3.92effect of chamber tilt 135.8offset PG4 to surface of chamber offset DCOPS dowel to surface offset DCOPS center to dowel Expected CMS Z

13 James N. Bellinger 4-Feb-2009 U/D data wrt Center Reference _3_03 outer _3_03 inner _2_02 reference (upside down)

14 James N. Bellinger 4-Feb-2009 Predicting Z at 1_3_03 Slope of laser line = Intercept = _03 outer _03 inner Offset to surface85.44 Surface Z at 3_03 outer Surface Z at 3_03 inner mm change??

15 James N. Bellinger 4-Feb-2009 Comparing w/ PG coded target at center of 3_ PostCraft Z center of YE PG est for average (center) My est for outer My est for inner Outer is close to reference Suggests that outer Z is good, inner Z needs work Est changes to for PG if I include tilts