MMF Introduction Schedule Budget Robert Ruland Design Driving

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 October 14, 2004 MMF Review MMF Introduction, Schedule, Budget 1 Robert Ruland ruland@slac. stanford. edu

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. 5*10 -4 is correlated to 70µm in Y, to achieve this requires finding the magnetic CLund to 20µm and the CLquad to 10µm October 14, 2004 MMF Review MMF Introduction, Schedule, Budget 2 Robert Ruland ruland@slac. stanford. edu

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 October 14, 2004 MMF Review MMF Introduction, Schedule, Budget 3 Robert Ruland ruland@slac. stanford. edu

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 October 14, 2004 MMF Review MMF Introduction, Schedule, Budget 4 Robert Ruland ruland@slac. stanford. edu

MMF Set-up Assembly Magnetic Measurements Undulator Test Bench #1 (7 m) final gap setting, final tuning Undulator Test Bench #2 (4 m) – existing prototyping procedures, software development, initial gap setting Hall Probe Calibration System Test magnet and NMR system Quad Integrated Field Strength Bench Stretched Wire Quadrupole Fiducialization Platform Vibrating Wire Pointed-Magnet Fixture Calibration Bench Cradle Assembly Bench Vacuum Chamber Alignment Bench Granite 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 F&A lab (1º C) 8 Cradles, quads, BPMs, Vacuum chamber and misc. supports in F&A lab (1º C) About 20 undulator segments / cradles in storage area (2. 5º C) Fiducialization & Assembly Fiducialization CMM 4. 2 m Quadrupole Fiducialization Platform Vibrating Wire mounted on CMM BPM, Diagnostics Fiducialization Magnetic Measurements Facility Requirements, PRD 1. 4 - 002 October 14, 2004 MMF Review MMF Introduction, Schedule, Budget 5 Robert Ruland ruland@slac. stanford. edu

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 October 14, 2004 MMF Review MMF Introduction, Schedule, Budget 6 Robert Ruland ruland@slac. stanford. edu

Undulator Test Bench 8 m 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 4 m bench obtained from APS with equivalent hardware as 8 m 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 October 14, 2004 MMF Review MMF Introduction, Schedule, Budget 7 Robert Ruland ruland@slac. stanford. edu

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 October 14, 2004 MMF Review MMF Introduction, Schedule, Budget 8 Robert Ruland ruland@slac. stanford. edu

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 October 14, 2004 MMF Review MMF Introduction, Schedule, Budget 9 Robert Ruland ruland@slac. stanford. edu

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 October 14, 2004 MMF Review MMF Introduction, Schedule, Budget 10 Robert Ruland ruland@slac. stanford. edu

Facility Construction & Design Goals Funding Long Lead Procurement Funds, available in FY 05 Building & Climate Control K$1, 400 Construction Schedule T 1 Aug 04 (Engineering) T 2 Dec 04 (Final Construction Drawings) T 3 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 October 14, 2004 MMF Review MMF Introduction, Schedule, Budget 11 Robert Ruland ruland@slac. stanford. edu

Measurement Equipment October 14, 2004 MMF Review MMF Introduction, Schedule, Budget 12 Robert Ruland ruland@slac. stanford. edu

Test Stand Implementation Schedule October 14, 2004 MMF Review MMF Introduction, Schedule, Budget 13 Robert Ruland ruland@slac. stanford. edu

Test Stand Implementation Schedule needs to be adjusted for effect of Continuing Resolution October 14, 2004 MMF Review MMF Introduction, Schedule, Budget 14 Robert Ruland ruland@slac. stanford. edu

Test Stand Implementation Schedule needs to be adjusted for effect of Continuing Resolution October 14, 2004 MMF Review MMF Introduction, Schedule, Budget 15 Robert Ruland ruland@slac. stanford. edu

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. October 14, 2004 MMF Review MMF Introduction, Schedule, Budget 16 Robert Ruland ruland@slac. stanford. edu

END of Presentation October 14, 2004 MMF Review MMF Introduction, Schedule, Budget 17 Robert Ruland ruland@slac. stanford. edu

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 PRD 1. 4 -001 General Undulator System Requirements) October 14, 2004 MMF Review MMF Introduction, Schedule, Budget 18 Robert Ruland ruland@slac. stanford. edu

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, desired: 3 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 October 14, 2004 MMF Review MMF Introduction, Schedule, Budget 19 Robert Ruland ruland@slac. stanford. edu