MMF%20Introduction,%20Schedule,%20Budget%20%20Robert%20Ruland

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MMF Introduction, Schedule, Budget Robert Ruland

• Design Driving Requirements
• Magnetic Measurements Facility (MMF) Capabilities
• Magnetic Measurements
• Fiducialization
• Storage
• Magnetic Measurements Facility
• Location, Construction Schedule
• Implementation
• Schedule
• Manpower
• Summary

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MM Test Bench Design Driving Requirements

• Magnetic Measurements / Tuning
• The measured values for Keff shall be within
  0.0005 (i.e., 0.015) of the design
  values(LCLS Undulator Requirements PRD 1.4
  001)
• Alignment / Fiducialization -Undulators-
• Relative alignment of undulator to BBA quadrupole
  driven by sensitivity of K to position,1.510-4
  is correlated to 70µm in Y, to achieve this
  requires finding the magnetic CLund to 20µm and
  the CLquad to 10µm

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MMF Design Driving Requirements Undulator to
Quad Relative Alignment

• Quadrupoles are aligned to straight line using
  BBA
• Undulators need to follow quadrupole position
• Critical relative alignment tolerance of 70 µm in
  Y
• Extremely difficult to achieve in tunnel
  environment with conventional alignment methods
• Solution Undulator and Quad integrated on common
  support, relative alignment performed in
  laboratory using CMM
• Design requirement accurate magnetic CL
  determination for quad, undulator as well as CMM
  for control of relative alignment

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Required MMF Tasks

• Tune
• Implement magnetic measurements equipment to
  measure and tune Keff to within 0.0005
• Determine magnetic CL
• Implement magnetic measurements equipment to
  determine magnetic centerline for quadrupole and
  undulator to within 10 µm and 20 µm,
  respectively.
• Mechanical Fiducialization
• Correlate magnetic axis to fiducials for
  quadrupole and undulator
• Alignment Control
• Perform control of relative alignment quadrupole
  to undulator
• Assembly
• Implement assembly capability to integrate
  components on common support

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MMF Set-up

• Assembly
• Cradle Assembly Bench
• Vacuum Chamber Alignment BenchGranite table with
  Height Gauge
• Undulator Segment / Cradle Storage
• At least 2 Und. Segments in MM lab (0.1º C)
• At least 2 Und. Segments in FA lab (1º C)
• 8 Cradles, quads, BPMs, Vacuum chamber and misc.
  supports in FA lab (1º C)
• About 20 undulator segments / cradles in storage
  area (2.5º C)

• Magnetic Measurements
• Undulator Test Bench 1 (7 m)final gap setting,
  final tuning
• Undulator Test Bench 2 (4 m)
  existingprototyping procedures, software
  development, initial gap setting
• Hall Probe Calibration SystemTest magnet and NMR
  system
• Quad Integrated Field Strength BenchStretched
  Wire
• Quadrupole Fiducialization PlatformVibrating
  Wire
• Pointed-Magnet Fixture Calibration Bench
• Fiducialization Assembly
• Fiducialization CMM 4.2 m
• Quadrupole Fiducialization PlatformVibrating
  Wire mounted on CMM
• BPM, Diagnostics Fiducialization

Magnetic Measurements Facility Requirements, PRD
1.4 - 002
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Layout

• Floor plan divided into three functional areas
• Magnetic Measurements ( 0.1º C)
• Fiducialization and Assembly ( 1º C)
• Storage ( 2.5º C)
• Test stand lay-out is driven by requirement to
  match the Earth Magnetic Field conditions in lab
  to Undulator Hall, i.e. azimuth and gap
  orientation need to be identical

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Undulator Test Bench

• 8m Test Bench Implementation Schedule
• First article undulators will arrive at SLAC
  around March 2006
• Production undulator delivery commences in summer
  06
• BO MMF estimated Febr. 06
• Not enough time to complete integration, software
  development, testing and commissioning before
  first undulators arrive
• Upgrade 4m bench obtained from APS with
  equivalent hardware as 8m bench to serve as test
  bed for software development and procedure
  testing.
• Will be using second bench for preliminary gap
  setting will help production schedule

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Undulator Fiducialization

• Proposed Method Pointed Magnet Fixture
• Step 1 measure offset between undulator axis
  and pointed-magnet reference fixture on MM Bench
• Step 2 Measure pointed-magnet reference fixture
  wrt undulator fiducials on CMM

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Quadrupole Fiducialization

• Finding the axis
• Based on Vibrating Wire or Pulsed Wire
• Have Pulsed Wire prototype setup. Routinely
  achieve repeatabilities even in environment with
  wide temperature swings of better than 5 µm
• Also have Vibrating Wire prototype set-up. It
  promises better yaw and pitch resolution.
  Implementation based on setup by Dr. Temnykh from
  Cornell
• Transfer onto quadrupole fiducials
• Use Wire Finders (developed for VISA) to locate
  wire and reference to its tooling balls
• Use Coordinate Measurement Machine (CMM) to
  transfer information from WF to Quad fiducials.
• Vibrating Wire system will be mounted onto
  optical table which can be set-up on undulator
  fiducialization CMM

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SLAC LCLS Magnet Measurements Facility

• SLAC presently does not have a facility to
  perform the magnetic measurements tasks necessary
  for LCLS with the required accuracy Need to
  build new facility.
• Proposed Location Bldg 81, about 0.8 km away
  from tunnel
• Sufficient power for HVAC test equipment
• Ground motion and vibration measurements did not
  indicate potential problems
• Manageable space constraints

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Facility Construction Design Goals

• Funding
• Long Lead Procurement Funds, available in FY05
• Building Climate Control K1,400
• Construction Schedule
• T1 Aug 04 (Engineering)
• T2 Dec 04 (Final Construction Drawings)
• T3 May 05 (Construction Start)
• Beneficial Occupancy February 2006 (early finish
  11/05)
• Design Specifications
• Full set of specs LCLS-TN-04-1 Z. Wolf, R.
  Ruland, "Requirements for the Construction of the
  LCLS Magnetic Measurements Laboratory.
• Magnetic Measurements Lab Temperature stability
  of 0.1º C, short term temperature swings of up
  to 0.3 ºC with less than 1 hour duration are
  acceptable
• Fiducialization Lab and Assembly Area
  Temperature stability of 1º C
• Storage Area Temperature Stability of 2.5º C

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Measurement Equipment
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Test Stand Implementation Schedule
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Test Stand Implementation Schedule
Schedule needs to be adjusted for effect of
Continuing Resolution
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Test Stand Implementation Schedule
Schedule needs to be adjusted for effect of
Continuing Resolution
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Manpower

• We have mostly ramped up the staffing in the
  Magnetic Measurements Group to cope with the MMF
  work and at the same time to allow our
  conventional work to continue.
• MMF Development
• 1 Senior Physicists
• 2.5 Engineering Physicists
• 1 add. Eng. Physicist (starts Jan. 1, 2005)
• 1 Metrology Engineer
• 2 Technicians
• 1 add. Technician (starts Jan 1, 2005)
• Conventional Work
• 1 Senior Physicist
• 0.5 Engineering Physicist
• 1 Technician
• 1 Research Assistant
• Will be able to handle Undulator Production
  Measurements with existing manpower, supplemented
  with help from the Alignment Engineering and
  Quality Inspection Groups. There is no other
  significant competing work scheduled.

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END of Presentation
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Fiducialization Accuracy Requirement
Required fiducialization accuracy is driven by
error budget for aligning undulator wrt to
beam-based-aligned quad, i.e. in order to stay
within the total error budget of 70µm vertically,
quadrupole fiducialization needs to done to 25µm
and undulator segments need to be done to 40µm
(see PRD1.4-001 General Undulator System
Requirements)
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7 m Test Bench Specifications Outline

• Total travel length in Z 7000 mm.
• Make carriage as long as cost wise reasonable to
  minimize yaw, at least 1000 mm
• Make bench cross-section as large as reasonable,
  min 800 mm wide, 500 mm high
• Travel length in X as much as bench width
  permits, min 300 mm
• Travel length in Y 100 mm or more if w/o loss of
  accuracy
• Granite base straightness in Z and X 10 µm
• Position accuracy at probe tip required Z, X, Y
  5 µm, 20 µm, 20 µm, desired 3 µm, 10 µm, 10 µm.
• Z-axis drive linear motor with 1 µm positioning
  resolution
• X, Y axes drive lead-screw with 1 µm positioning
  resolution
• No stepping motor on any axis
• Z position measurement with incremental encoder
  type Heidenhain LIDA, a second encoder on
  opposite side of bench could be considered to
  monitor yaw rotation of carriage
• X, Y axes motion measured with Heidenhain glass
  scale encoders
• Perpendicularity of X and Y axes to be better
  than 0.1 mrad
• Probe axis be equipped with rotary stage with
  0.01º resolution and 4-axes goniometer
• Support bench on foundation separate from
  laboratory floor
• Support undulator independent from bench on
  common foundation
• Support cable carrier independent from bench on
  common foundation
• Equip cable carrier with drive system
  synchronized as slave to Z-axis drive