Facility Advisory Committee BFW Calibration Test Results on

Facility Advisory Committee BFW Calibration Test Results on behalf of: Jim Bailey Keith Caban Clive Field Geovanni Gordon Tom Nakashima Danny Peterswright Reggie Rogers Donald Schafer Yung-Yung Sung 06/17/2008 FAC: BFW Test Update 1 Venkat Srinivasan venkats@slac. stanford. edu

BFW Assembly Mounted on Adjustable Support Electrical Connectors for Wire Signals Potentiometer Pneumatic Solenoid Valve Compression Spring Positioner Air Supply Shut Off Valve Precision Screw Card Position Monitor (Limit switches) Frame Housing Alignment Fiducials Pneumatic Cylinder (Modified since) Vacuum Pump Connector (2. 75” Conflat Flange) Vacuum Chamber Connection Flange (NW-50 Ce. Fix w/Clamp) Assembly model courtesy: J. Bailey, ANL 06/17/2008 FAC: BFW Test Update Beam Port 2 Adjustable Mounting Support Venkat Srinivasan venkats@slac. stanford. edu

BFW Card: Physics Overview (PRD 1. 4 -004 -r 1) Parameter Value Status Wires per BFW device 2 2 Wire perpendicularity 10 mrad ~1 mrad (early microscope test on prototype) Wire diameter 0. 03 -0. 04 mm 0. 0345 -0. 0413 mm Carbon wires. Vertical position of Y-wire from Girder Axis (GA) 0. 20 mm 0. 1899 mm [Sample average, BFW #7] Horizontal position of X-wire from GA 0. 40 mm 0. 412 mm [Sample average, BFW #7] Vacuum hardware clearance radius at target >2 mm Two independent methods to measure beam intensity at wire location: (1) beam induced wire current (2) Scattered particles NA Only scattered particle detection in plan Y-wire vertical insertion reproducibility 30 µm 1 µm [Sample RMS, BFW #7] X-wire horizontal insertion reproducibility 65 µm 19 µm [Sample RMS, BFW #7] 06/17/2008 FAC: BFW Test Update 3 Venkat Srinivasan venkats@slac. stanford. edu

BFW: Alignment & Assembly Status Task Status/Dates (6/17/08) Delivery of BFW assemblies from ANL 11 revised design BFWs received at SLAC (+2 old design). 2 more shipped as of 6/9/08 Fabrication of Bench Assembly for SLAC Alignment of BFW Used for alignment of BFWs BFW electrical connections Electrical connections, ground connectors and RF shields: All RFI Fabrication of 40 BFW cards (Macor) RFI BFW Card Coating – Kovar (40 pieces) RFI BFW Card Wiring – Carbon wire, 40 pieces RFI BFW Card Installation and alignment RFI BFW Assembly Pneumatics Boxes Put in system by P. Cutino for 33 BFW 90 psi airline Put in system by P. Cutino for 33 BFW Additional non-wired cards 06/17/2008 FAC: BFW Test Update 7 BFW cards fabricated, cleaned and coated. Waiting to be wired if needed. 4 Venkat Srinivasan venkats@slac. stanford. edu

BFW: Alignment & Assembly Status Shipped from Argonne Total Received at SLAC In Transit RFI QC Testing in process Awaiting QC Awaiting retesting Old design BFWs 15 13 2 (#16, 17) 7 (#4, 5, 6, 9, 7, 12, 29) 1 (#24) 2 (#15, 32) 1 (#13) 2 (#1, 2) 06/17/2008 FAC: BFW Test Update 5 Venkat Srinivasan venkats@slac. stanford. edu

BFW Card Prototype Drawing X-wire end point: 39. 614 mm Beam center: 40 mm Gap between beam and X-wire: 0. 386 mm Prototype material: Al-6061 Actual material: Macor Thickness: 3/16” (4. 8 mm) Coating: Kovar [tooling in progress] Y-wire end point: 37. 014 mm Beam center: 37. 2 mm Gap between beam and Y-wire: 0. 186 mm Courtesy: C. Field, R. Rogers 06/17/2008 FAC: BFW Test Update 6 Venkat Srinivasan venkats@slac. stanford. edu

BFW Card Wiring: Tooling Micrometer stage BFW Card Rods for hanging BFW wire with weights Card holder ‘Carbon wire & weight’ Copper Tabs Courtesy: C. Field, Y. Sung 06/17/2008 FAC: BFW Test Update • Wires soldered to copper tabs • Wires from copper tabs connect to BFW feedthrough • Feedthrough to be grounded and RF shielded 7 Venkat Srinivasan venkats@slac. stanford. edu

BFW Alignment Procedure at SLAC (outside Vacuum) • Coordinate system definition • Wire card positioning and alignment • Transformation Factor from BFW tooling balls wire card 06/17/2008 FAC: BFW Test Update 8 QC Instruction List Venkat Srinivasan venkats@slac. stanford. edu

BFW Alignment Procedure (in Vacuum) • Wire position found using TB values • Repeatability check • Wire position check in virtual beamline coordinate system QC Instruction List 06/17/2008 FAC: BFW Test Update 9 Venkat Srinivasan venkats@slac. stanford. edu

BFW Test: Sample ‘Good’ Data, BFW #7 X (<65) Y (<30) Wire 19 1 TB 5 4 9 TB 6 4 10 TB 7 3 3 TB 8 1 8 All Data, courtesy: SLAC QC, E. Lundahl, K. Caban, T. Nakashima 06/17/2008 FAC: BFW Test Update 10 Venkat Srinivasan venkats@slac. stanford. edu

BFW Test: Sample ‘Bad’ Data - old design of BFW #2 06/17/2008 FAC: BFW Test Update 11 X (<65) Y (<30) Card Position (before vacuum) 141 156 TB 5 31 78 TB 6 32 88 TB 7 18 75 TB 8 18 18 Venkat Srinivasan venkats@slac. stanford. edu

BFW Test: Sample Data, BFW #12 Vacuum Test 1 X (<65) Y (<30) Wire 145 15 TB 5 33 76 TB 6 33 52 TB 7 41 15 TB 8 41 55 Measurement Method: • Under Vacuum • 200 cycles, 10 measurements, Random sampling • Relaxation time between cycles: ~ 1 second 06/17/2008 FAC: BFW Test Update 12 Venkat Srinivasan venkats@slac. stanford. edu

BFW Test: Sample Data, BFW #12 Vacuum Test 2 Measurement Method: • Under Vacuum • Another 10 cycles, 10 measurements, Consecutive sampling • Relaxation time between cycles: ~ 1 minute 06/17/2008 FAC: BFW Test Update X (<65) Y (<30) ANL Wire Position Repeatability Test (100 cycles) 12 2 SLAC Wire Position (10 cycles) 31 3 TB 5 19 22 TB 6 18 16 TB 7 11 6 TB 8 11 15 BFW #12 RFI-ed • Tested for repeatability at ANL (All units are tested at ANL) • Wire position verified at SLAC • Wire repeatability verified with delayed cycles (small sample size) at SLAC • SLAC Procedure to calibrate devices using small sample size + delayed cycle measurement 13 Venkat Srinivasan venkats@slac. stanford. edu

BFW : Status Reminder Shipped from Argonne Total Received at SLAC In Transit RFI QC Testing in process Awaiting QC Awaiting retesting Old design BFWs 15 13 2 (#16, 17) 7 (#4, 5, 6, 9, 7, 12, 29) 1 (#24) 2 (#15, 32) 1 (#13) 2 (#1, 2) Process Time per Assembly: ~ 1 day 06/17/2008 FAC: BFW Test Update 14 Venkat Srinivasan venkats@slac. stanford. edu

Top View Y-Precision Screws 10, 11, and 12 ¼-20 -UNC Screws 1 and 2 ¼-20 -UNC Screws 5, 6 and 7 (Brass washers under heads are not shown) ¼-20 -UNC Screws 3 and 4 This precision screw remains fixed X-Precision Screws. Do not touch Socket head screw loosens and tightens collar on precision screws Socket head for adjusting the precision screws Assembly model courtesy: J. Bailey, ANL 06/17/2008 FAC: BFW Test Update 15 Venkat Srinivasan venkats@slac. stanford. edu

BFW Assembly (Body Sectioned) Wire Card Down in Inactive Mode Potentiometer (Out Position) Electrical Connectors (Down Position) Internal Return Spring (Expanded Position) Internal Kinematic Stop Plates (Open Position) Pneumatic Solenoid Valve (Cylinder Vent Position) Lower Limit Switch (Actuated Position) Bellows Seal (Compressed Position) Wire card (Down Position) BEAM Assembly model courtesy: J. Bailey, ANL 06/17/2008 FAC: BFW Test Update 16 Venkat Srinivasan venkats@slac. stanford. edu