ME 12 and ME 13 Positions

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ME1/2 and ME1/3 Positions
James N. Bellinger University of
Wisconsin-Madison 20 January 2009
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2 Link Connections

• The inner connection has new numbers from Celso
• The outer connection uses Link sensors along the
  MAB, an infrared distancemeter from the MAB to
  the Transfer Plate, and a laser from the Transfer
  Plate through ME1/3 to one end of ME1/2

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Z-Details
Reflective target
IR Distancemeter Laser line
MAB mounting surface
DCOPS Laser Line
ME1/3 chamber
ME1/2 chamber
MAB Link Laser Line (inside MAB)
Endcap Link Laser Line
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Use of Link information

• The relative positions of the MAB laser and ME1
  laser I accept as given.
• The ME1/2 chamber positions and angles are
  therefore dominated by Link results. I only have
  a single DCOPS point on ME1/2
• The ASPD centers are given by Link I predict
  what Z surface the sensors are mounted on and
  extrapolate to the distancemeter radius
• I assume IR target is mounted on that same
  surface Oleg says 1.5mm away.

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Z Information

• Given position/direction of ME1/2 Link laser and
  ME1/2 ASPD sensor values
• Given MAB ASPD sensor centers
• From drawings 30mm ASPD center to mounting
  surface
• Predict target Z position
• Add distancemeter distance to reach position of
  reference dowel for DM
• Relative Z positions of HSLM laser and DM dowel
  on Transfer Plate from drawings
• Z-measuring CCDs in DCOPS fit to laser line
• End point of DCOPS line on ME1/2
• From drawings go from DCOPS to ME1/2
• From drawings go from ME1/2 ASPDs to ME1/2
• Complete loop, should be able to find consistency

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X/Y information

• I have X/Y/Z information from Link at the ME12
• I have X/Y/Z information from Link at the MAB
• I only have Z information from MAB to Transfer
  Point using IR Distancemeter
• The MAB DCOPS mounting is not available yet, so I
  have no Transfer Line X/Y information yet
• Therefore I have no X/Y information for ME1/3.
  Yet.
• ME1/2 X/Y info comes from Link

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