Bob Lill LCLS FAC [email protected] June 16-18, 2008 RF BPM Status and Production Test...
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Transcript of Bob Lill LCLS FAC [email protected] June 16-18, 2008 RF BPM Status and Production Test...
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
RF BPM Status and Production Test Results
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
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 GenerationITS Test
2nd Generation3-BPM TestFirst Article
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
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 07/07Completed test matrix to prove compliance to specificationProduction phase ongoing
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
4 mm Wide Scan Data without removing beam motion 0.2 nC
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
Single-Shot Resolution Test Procedure
Use calibration to get a list of horizontal and vertical positions for each BPMCan 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
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
3-BPM Test Apparent Y resolution Y = 270 nm
Courtesy Steve Smith
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
3-BPM Test Apparent X resolution x = 360 nm
Courtesy Steve Smith
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
1 Hour Stability Measurement
Courtesy Nick Sereno
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
LTU and Undulator BPM System Conformance Table
Parameter Specification Limit
Measured Data (09/27/07)
Resolution < 1m
0.2 – 1.0 nC
+/- 1 mm range
< 0.6 m
Offset Stability < +/- 1m
1 hour
20.0 +/- 0.56 Celsius
< +/- 1m
Offset Stability < +/- 3m
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 > 14 dB
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
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
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
BPM process flow chart
Receive Parts from Vendor
InspectParts
Pass
Cold Test and Tune
ALTAIRBraze End Caps and flange cuffs
Vacuum Test Pass
ship to ANL
Transitions brazed and flanges
welded
Vacuum test
Pass
Cold test and Tune
Acceptance Test
Pass
Bake-out and final prep
Ship
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
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
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
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
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
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
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
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
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
Tunable Cavity End Caps
End-cap design mechanically strengthen
Can retune once flange is installed
Tuner is protected against accidental mistuning
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
Cavity BPM Production StatisticsS/N
Ship
date
Dipole Diameter
SPEC29.726 mm
+0,-15um
(mm)
Dipole Frequency
After
Pre-Tuning
(GHz)
Dipole Frequency
After final
Tune
11.384 GHz
+/- 10 MHz
(GHz)
Monopole Frequency
After
Pre-Tuning
(GHz)
Monopole Frequency After Final Tune
11.384 GHz
+/- 10 MHz
(GHz)
010
5/12
29.719 11.389 11.380 11.380 11.380
011
4/09
29.716 11.376 11.384 11.383 11.385
012
4/18
29.717 11.375 11.382 11.374 11.383
013
5/12
29.712 11.377 11.378 11.374 11.382
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
Cavity BPM Production StatisticsS/N
Ship
date
Dipole Diameter
SPEC29.726 mm
+0,-15um
(mm)
Dipole Frequency
After
Pre-Tuning
(GHz)
Dipole Frequency
After final
Tune
11.384 GHz
+/- 10 MHz
(GHz)
Monopole Frequency
After
Pre-Tuning
(GHz)
Monopole Frequency After Final Tune
11.384 GHz
+/- 10 MHz
(GHz)
014
4/18
29.714 11.379 11.385 11.371 11.382
015
5/07
29.712 11.374 11.381 11.372 11.383
016
5/07
29.712 11.382 11.394 11.377 11.389
017
5/12
29.712 11.377 11.382 11.372 11.380
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
Cavity BPM Production StatisticsS/N
Ship
date
Dipole Diameter
SPEC29.726 mm
+0,-15um
(mm)
Dipole Frequency
After
Pre-tuning
(GHz)
Dipole Frequency
After final
Tune
11.384 GHz
+/- 10 MHz
(GHz)
Monopole Frequency
After
Pre-tuning
(GHz)
Monopole Frequency After Final Tune
11.384 GHz
+/- 10 MHz
(GHz)
018
5/22
29.713 11.381 11.387 11.364 11.381
019
5/22
29.715 11.378 11.384 11.387 11.387
020
5/22
29.712 11.371 11.374 11.381 11.385
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
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
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
Receiver Electronics
1st generation Miteq standard product2nd generation bread board to support phase II APS Injector Test StandFirst Article production design
supported 3 BPM test
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
Receiver Component Status
Most components received at this time
Sub assemblies being built
Test fixtures built
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
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
Miteq Receiver S/N 1369865 -Phase Locked- 4/14/08
-110.0
-100.0
-90.0
-80.0
-70.0
-60.0
-50.0
-40.0
-30.0
-20.0
-10.0
0.0
10.0
20.0
-125.0 -115.0 -105.0 -95.0 -85.0 -75.0 -65.0 -55.0 -45.0 -35.0 -25.0 -15.0 -5.0 5.0
RF Input Power (dBm)
IF O
utp
ut
Po
wer
(d
Bm
)
Ref (LG)
Horz (LG)
Vert (LG)
Ref (HG)
Horz (HG)
Vert (HG)
Gain Linearity
-1.00
-0.50
0.00
0.50
1.00
1.50
2.00
-140.0 -120.0 -100.0 -80.0 -60.0 -40.0 -20.0 0.0
Input (dB)
Gai
n (
dB
)
REF
HORZ
VERT
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
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
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
Waveguide Kit
Waveguide has been received and QA checked
Expected Ship date 6/20/08
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
BPM System Layout and Integration
X-band receiver LRU
Beam X-Band Cavity BPM
Horizontal
Attenuator/bandpass
filterLow Noise Ampl
Power Limiter
Lowpass Filter
IF Amplifier
Low Noise Ampl
Power Limiter
Low Noise Ampl
Power Limiter
LO Ampl
119 MHz Beam Synchronized
Reference
IN-TUNNEL ELECTRONICS
Ib
Reference cavity
Dipole cavity
40 MHz IF signals
To ADC
Attenuator/bandpass
filter
Attenuator/bandpass
filter
Termination
Vertical
Reference
Phase Locked Local oscillator
15 Volts/control I/O
11.424 GHz Local Oscillator
Power Distribution and Control
Vertical
Horizontal
Reference
Low Gain Bypass
Low Gain Bypass
Low Gain Bypass
Lowpass Filter
IF Amplifier
Lowpass Filter
IF Amplifier
Bob Lill
LCLS FAC meeting [email protected]
June 16-18, 2008
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