1. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 LCLS Cavity BPM Status and Testing

2. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 In-Tunnel Electronics Block Diagram

3. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 Cavity BPM Development R&D phase completed Testing phase II completed Entering production phase Cold Test 1st Generation ITS Test 2nd Generation 3-BPM Test First Article

4. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 X-Band Cavity BPM Development Five X-Band Cavity BPM built and tested Two qualified vendors for machined parts Brazing procedure optimized to preserve tune Tuning and testing procedures generated

5. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 BPM Simulations Cavity BPMs simulated in Microwave Studio, HFSS and Mafia Test data indicates good agreement between simulated model and measured BPMs Port 1 Port 4 Port 2 Port 3 X- Port Y- Port Vertical dipole mode Mono pole mode

6. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 Prototype BPMs for 3-BPM test 4 BPMs built and tested to support 3-BPM testing Design and technology mature

7. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 Cold Test After Brazing and Tuning Serial #Dipole Freq. (GHz) Dipole Loaded Q Monopole Freq. (GHz) Monopole Loaded Q Design Goal11.384355011.3843695 R/011.384331011.3843437 00111.374325011.3823372 00211.376350011.3833436 00311.377337111.4003200

8. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 New End Cap End-cap design mechanically strengthen Can retune once flange is installed Tuning pins are protected against accidental mistuning New end-cap designed and tested Vacuum flange test prototype pending

9. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 Cavity BPM Production Status Cavity BPM machining contracts placed with parts expected 11/27/07 Two vendors will provide a single machined First Article BPM for evaluation Vacuum window first lot delivery 11/12/07 Vendor for brazing BPM pending contract award

10. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 Receiver Electronics Development R&D phase complete Test fixtures developed Entering production phase

11. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 Receiver Development X-Band down-converter developed from existing Miteq product Modified to meet LCLS requirements 3 channel receiver with common LO 4 first article packaged receivers delivered and presently being tested

12. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 Prototype Receiver Specification ParameterSpecification Limit Condition RF Frequency11.384 GHz20.0 +/- 0.56 Celsius Dx, Dy, Intensity Input Peak Power50 watts peakNo damage (limiter protection) LO Frequency11.424 GHz (2856 MHz*4) 20.0 +/- 0.56 Celsius 1nC, 1mm offset, 200fs BL LO Power Range+10 dBm Max.Provide LO for 3 down converters IF Frequency40 MHz Min.20.0 +/- 0.56 Celsius Noise Figure Dx and DY3.2 dB Max.20.0 +/- 0.56 Celsius Noise Figure Intensity (reference)4.0 dB Max.20.0 +/- 0.56 Celsius Output Power+14 dBm1 dB compression Conversion Gain28 dB typical20.0 +/- 0.56 Celsius Low Gain Mode Conversion Gain0 dB typicalExtends range by 24 dB

13. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 X-Band Receiver Chassis Line Replaceable Unit (LRU) design Local status interface indicators for power, operational mode, gain range, self-test Integral heat sink and EMI chassis design

14. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 Receiver Production Status Drawings updated and released Specifications generated on receiver, local oscillation and filters Vendor selection same as 3-BPM first article Presently quoting production quantities

15. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 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 test matrix to prove compliance to specification Production phase started

16. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 3-BPM Test at APS LEUTL 2-axis translation stage installed and tested provide sub-micron controllable horizontal and vertical motion Multiple experiments conducted to verify operation

17. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 Test Parameters Beam Energy – 400 MeV Beam Charge/pulse – 0.2 to 0.5 nC Beam Repetition Rate – 6 Hz Beam Pulse Width – 2 ps FWTM (uncompressed) Diagnostics: LEUTL current monitor Flags upstream and downstream of test setup Quad doublet focusing/steering upstream of test setup

18. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 4 mm Wide Scan Data without removing beam motion 0.2 nC

19. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 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

20. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 Histogram residuals for BPM 2 Courtesy Nick Sereno

21. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 3-BPM Test Apparent Y resolution  Y = 270 nm Courtesy Steve Smith

22. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 3-BPM Test Apparent X resolution  x = 360 nm Courtesy Steve Smith

23. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 1 Hour Stability Measurement Courtesy Nick Sereno

24. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 Long Term Electronics Stability Testing

25. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 LTU and Undulator BPM System Conformance Table ParameterSpecification Limit Measured Data (09/27/07) Resolution < 1  m 0.2 – 1.0 nC +/- 1 mm range < 0.6  m Offset Stability < +/- 1  m 1 hour 20.0 +/- 0.56 Celsius < +/- 1  m Offset Stability < +/- 3  m 24 hours 20.0 +/- 0.56 Celsius <100 nm electronics test 20.0 +/- 0.56 Celsius Gain Error< +/- 10 % +/- 1 mm range < 10 % +/- 1 mm range Dynamic Range, Position+/- 1 mm> +/- 1 mm Dynamic Range, Intensity> 14 dB

26. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 LCLS Three-BPM Test Conclusions Resolution spec met Long term drift spec for 1 hour spec met Gain stability spec met 1 hour temperature stability spec met 24 hour temperature stability spec met electronics with simulated beam

27. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 Undulator System Layout X-band receiver LRU Beam

28. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 Undulator System Layout

29. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 LTU System Layout

30. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 Deliverables per BPM 1 Cavity BPM assembly 1 X-band receiver 3 Waveguides and 2 loads with assembly hardware 1 Receiver mounting hardware assembly 1 BPM mounting stage Bellows and finger inserts

31. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 Production Milestones Production of 2 BPMs for LTU 01/08 Production of 6 BPMs for undulator 02/08 Production of 10 BPMs for undulator 03/08 Production of 11 BPMs for undulator 04/08 Production of 7 BPMs for undulator 05/08 Spares 4 BPMs 05/08 40 sets of Electronics 07/08

32. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 Summary X-Band Cavity BPM Development phase complete Production procurement in place First machined production units expected in November Receiver Electronics 4 First article prototypes assembled and tested with good results 3-BPM testing prototypes incorporate receiver, local oscillator and filter first article packaging Production procurement ongoing Test Qualification Successful collaborative effort testing and qualifying BPM system Qualified system with the same ADC (PAD) as SLAC LINAC BPM upgrade to minimize risk of integration

33. Bob Lill FAC meeting Cavity BPMBlill@aps.anl.gov October 30, 2007 Production Risks New End Cap design New tuning scheme Window plating problem Unexpected integration problem Unexpected vendor problem