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RF BPM Status and Production Test Results

RF BPM Status and Production Test Results. Cavity BPM Development. R&D 1st generation phase I cold test BPM R&D 2nd generation phase II APS Injector Test Stand First Article production design 3 BPM test. Cold Test 1st Generation. ITS Test 2nd Generation. 3-BPM Test First Article.

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RF BPM Status and Production Test Results

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  1. RF BPM Status and Production Test Results

  2. Cavity BPM Development • R&D 1st generation phase I cold test BPM • R&D 2nd generation phase II APS Injector Test Stand • First Article production design 3 BPM test Cold Test 1st Generation ITS Test 2nd Generation 3-BPM Test First Article

  3. Comprehensive BPM Test Program • Non-Vacuum Single BPM cold test unit complete 04/06 • (Phase I) test in APS Injector Test Stand complete 09/06 • (Phase II) 3-BPM test in APS LEUTL completed 07/07 • Completed test matrix to prove compliance to specification • Production phase ongoing

  4. 4 mm Wide Scan Data without removing beam motion 0.2 nC

  5. Single-Shot Resolution Test Procedure • Use calibration to get a list of horizontal and vertical positions for each BPM • Can do Model Independent Analysis (MIA) or Least Squares Analysis (LSA) • Predict position at middle bpm (BPM 2) using horizontal and vertical positions at BPMs 1 and 3. • Histogram the residuals for BPM 2 and standard deviation is the resolution

  6. 3-BPM Test Apparent Y resolution sY = 270 nm Courtesy Steve Smith

  7. 3-BPM Test Apparent X resolution sx = 360 nm Courtesy Steve Smith

  8. 1 Hour Stability Measurement Courtesy Nick Sereno

  9. LTU and Undulator BPM System Conformance Table

  10. M1-Tool Works BPM Production • M1-Tool Works awarded contract for machining bodies and transitions for all 40 sets of parts • Production BPMs mechanically measured very good

  11. BPM process flow chart

  12. Cold Test Set-Up for Pre-Braze test • All BPMs are tuned and cold tested before brazing • Tuning accomplished by micro-machining end-caps • Good correlation between cold test data before and after braze

  13. Preparation Before First Braze • Average of 4 BPMs per week are pre-tuned and cold tested • 30 BPMs cold tested and in process at this time • End Cap braze procedure works very nice for consistent electrical results • Pre-tune minimizes the need for further tuning after braze

  14. Cold Test Stations • 2 network analyzers are set-up to support LCLS BPM production • Clean room procedures used when handling clean parts and assembles • All parts are carefully fitted and tuned before sending them to be brazed

  15. Cavity Production • Test method and procedures optimized for production • First few units required minimum tuning • Tuning design working well when needed • Good correlation from pre-tune data

  16. Tunable Cavity End Caps • End-cap design mechanically strengthen • Can retune once flange is installed • Tuner is protected against accidental mistuning

  17. Cavity Tuners

  18. Pre-Tuned Dipole Cavity

  19. Cavity BPM Production Statistics

  20. Cavity BPM Production Statistics

  21. Cavity BPM Production Statistics

  22. Cavity BPM Production Milestones • 1st BPM shipped 05/12/08 • 12 BPMs shipped date 06/06/08 • Expect 13 BPMs to ship 07/01/08 • Expect 13 BPMs to ship 08/01/08 • Spares 08/08

  23. Receiver Electronics • 1st generation Miteq standard product • 2nd generation bread board to support phase II APS Injector Test Stand • First Article production design supported 3 BPM test

  24. Receiver Component Status • Most components received at this time • Sub assemblies being built • Test fixtures built

  25. Miteq Production Receiver Delivered • First Unit Received 4/11/08 • Critical parameters checked meet specification • Received returned to Miteq to repair damage due to ANL test fixture over voltage condition

  26. Receiver Production Milestones • 1st receiver ship date 06/12/08 • 8 receivers expected ship date 07/01/08 • 15 receivers expected ship date 07/31/08 • 16 receivers expected ship date 08/31/08

  27. Waveguide Kit • Waveguide has been received and QA checked • Expected Ship date 6/20/08

  28. BPM System Layout and Integration Beam X-band receiver LRU

  29. Risk Mitigation for Integration and Commissioning • Extensive System Testing • Installation of production hardware on long term test undulator • Qualified system with the same ADC (PAD) as SLAC LINAC BPM upgrade to minimize risk of integration • Successful collaborative effort testing and qualifying BPM system

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