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MICE Alignment and Support Structure - PowerPoint PPT Presentation


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MICE Alignment and Support Structure. Tony Jones and Yury Ivanyushenkov Engineering Department RAL. MICE alignment precision. Is expected to be similar to the one on ISIS i.e.: along the beam 0.5 mm transverse the beam 0.1 mm angular tilt << 0.5°

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slide1

MICE Alignment and Support Structure

Tony Jones and Yury Ivanyushenkov

Engineering Department

RAL

slide2

MICE alignment precision

  • Is expected to be similar to the one on ISIS i.e.:
  • along the beam 0.5 mm
  • transverse the beam 0.1 mm
  • angular tilt << 0.5°
  • ISIS surveying team uses a laser tracker for alignment
  • of beam line (and equipment) components.
slide3

ISIS Laser Tracker

Measures in 3D the position of an optical target

with precision of 1 μm over 30 m distance.

slide4

Optical targets for laser tracker

optical target

target holder

10 mm reamed hole

(MICE has to provide such the holes on the modules)

slide6

Typical ISIS rail systems

ISIS surveyor Mike Krendler suggests MICE should use rail system for precise position of MICE modules

in the beam.

In this approach an accurate

position of rails defines

the position of a module.

Rails alignment can be done either

with a real module or with a dummy

module/structure.

Once the rails are aligned, module

always be in the same position.

slide8

Linear slide rail system

mounting platform

recirculating

ball bearings

rails

slide11

MICE alignment procedure: Proposal

  • Alignment of linear rail system in horizontal plane and perpendicular to MICE beam-line axis.
  • Install the module onto the mounting platform in the off-line position.
  • Align the centre of the module in vertical and horizontal planes.
  • Secure the module to the mounting platform.
  • Move the module on the rail system to the beam-line axis position.
  • Lock the mounting platform at this position.
  • Repeat the procedure for other modules.
  • Check the axis of the string of modules.