Transcript RF BPM Status and Production Test Results

RF BPM Status and Production
Test Results
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
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
June 16-18, 2008
LCLS FAC meeting
ITS Test
2nd Generation
3-BPM Test
First Article
Bob Lill
[email protected]
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
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
4 mm Wide Scan Data without
removing beam motion 0.2 nC
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
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
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
3-BPM Test
Apparent Y resolution sY = 270 nm
Courtesy Steve Smith
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
3-BPM Test
Apparent X resolution sx = 360 nm
Courtesy Steve Smith
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
1 Hour Stability Measurement
Courtesy Nick Sereno
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
LTU and Undulator BPM System
Conformance Table
Parameter
Specification
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
> 14 dB
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
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
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
BPM process flow chart
Receive Parts
from Vendor
Inspect
Parts
Pass
Cold Test and
Tune
ALTAIR
Braze End Caps
and flange cuffs
Transitions brazed
and flanges
welded
Vacuum test
Pass
Cold test
and Tune
Acceptance
Test
Pass
Vacuum Test
Pass
ship to ANL
Bake-out and final
prep
Ship
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
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
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
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
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
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
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
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
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
Tunable Cavity End Caps
End-cap design
mechanically
strengthen
Can retune once
flange is installed
Tuner is protected
against accidental
mistuning
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
Cavity Tuners
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
Pre-Tuned Dipole Cavity
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
Cavity BPM Production Statistics
S/N
Ship
date
Dipole
Diameter
SPEC
29.726
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
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
Cavity BPM Production Statistics
S/N
Ship
date
Dipole
Diameter
SPEC
29.726
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
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
Cavity BPM Production Statistics
S/N
Ship
date
Dipole
Diameter
SPEC
29.726
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
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
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
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
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
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
Receiver Component Status
Most components received at this time
Sub assemblies being built
Test fixtures built
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
Miteq Production Receiver Delivered
4/14/08
10.0
0.0
-10.0
-20.0
IF Output Power (dBm)
Ref (LG)
Horz (LG)
-30.0
Vert (LG)
-40.0
Ref (HG)
Horz (HG)
-50.0
Vert (HG)
-60.0
-70.0
-80.0
-90.0
-100.0
-110.0
-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
Gain Linearity
2.00
1.50
REF
HORZ
1.00
VERT
0.50
0.00
-140.0
-120.0
-100.0
-80.0
-60.0
-40.0
-20.0
0.0
-0.50
-1.00
Input (dB)
June 16-18, 2008
LCLS FAC meeting
5.0
RF Input Power (dBm)
Gain (dB)
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 Locked20.0
Bob Lill
[email protected]
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
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
Waveguide Kit
Waveguide has been received and QA checked
Expected Ship date 6/20/08
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
BPM System Layout and Integration
IN-TUNNEL
ELECTRONICS
Low Gain
Bypass
X-Band Cavity BPM
Vertical
Reference
cavity
Attenuator/
bandpass
filter
Dipole
cavity
Ib
Horizontal
Attenuator/
bandpass
filter
Power
Limiter
Low Noise Ampl
Attenuator/
bandpass
filter
Vertical
Lowpass
Filter
Horizontal
Lowpass
Filter
Reference
Beam
Low Gain
Bypass
Power
Limiter
Low Noise Ampl
IF Amplifier
Low Gain
Bypass
Termination
Reference
Lowpass
Filter
IF Amplifier
Power
Limiter
Low Noise Ampl
40 MHz IF
signals
To
ADC
IF Amplifier
Phase Locked
Local oscillator
11.424 GHz
Local Oscillator
119 MHz Beam
Synchronized
Reference
LO Ampl
Power
Distribution
and Control
15 Volts/
control I/O
X-band receiver LRU
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]
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
June 16-18, 2008
LCLS FAC meeting
Bob Lill
[email protected]