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SPX – Timing and
SynchronizationWBS U1.03.03.03
WBS U1.02.01.03.03
Frank LenkszusSenior Electronics EngineerAES/Controls
DOE Lehman CD-2 Review of APS-Upgrade4-6 December 2012
Outline
Technical Significance WBS Scope Team Requirements Design Risks ES&H Cost Schedule
2
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
Technical Motivation
SPX presents demanding synchronization requirements that can only be met by state-of-the art techniques
3
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
WBS 1.02 / 1.03 Timing & Sync Scope/Cost Summary R&D, Design, construction, testing, and installation of the timing and
synchronization systems for SPX
Includes:
– 16 channel transmitter/sender
– Phase stabilizers for LLRF
– 1 laser oscillator phase stabilizer
– 2 4-input sync heads for cavities
– 1 laser oscillator sync head
– cable plant
– Engineering design/support
– LBNL CollaborationDOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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SPX Timing and Synchronization Scope and WBSU1.02.01.03 & U1.03.03
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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Labor Non-Labor TOTAL ($k)
U1 Short Pulse X-Ray (SPX) 997 1,250 167 251 2,664 U1 02.01.03 - SPX R&D 334 639 24 85 1,083
02.01.03.03 - Timing & Synchronization R&D 334 639 24 85 1,083 U1 03.03 - SPX Production 663 610 143 165 1,581
03.03.03 - Timing & Synchronization 663 610 143 165 1,581
WBS DIV OH + ANL
G&A ($k)ESCALATION
($k)
DIRECT ($k)
Timing/Synchronization Requirements
6
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
Specification Name RMS Value Bandwidth Driving Requirement
Common-mode phase Variation
< 10 deg 0.01 Hz – 271 kHz Keep intensity variation under 10% rms
Differential mode phase variation between sectors
< 0.038 dega 0.01 Hz – 200 Hz Keep rms beam motion outside of SPX within beam stability requirements
Differential mode phase variation between sectors
< 0.077 dega 0.01 Hz – 1 kHz Keep rms beam motion outside of SPX within beam stability requirements
Differential mode phase variation between sectors
< 0.28 deg 1 kHz – 271 kHz Limits effective emittance growth to below 1.5 pm
Beam Line Laser Synchronization to X-ray pulse
< 0.27 psec 0.01 Hz to 1 kHz Limit increase in effective pulse duration to < 10%
a Requirement without orbit correction running
Phase Error Budget
Committee formed to allocate phase tolerances Committee Members
– Ned Arnold, Tim Berenc, John Carwardine, Glenn Decker, Eric Dufresne, Doug Horan, Frank Lenkszus, Yuelin Li, Bob Lill, Hengjie Ma, Vadim Sajaev, Bingxin Yang
Spread sheets developed for both SPX and SPX0– SPX0
• Cross-Phase Mode• In-Phase Mode
– SPX Many contributors to phase errors have been identified and quantified
where data is available– However there are contributors whose effects are unknown such as
microphonics The spread sheets establish a default error budget allocation to the
enumerated contributors based on the specifications in the PRDDOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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The Challenge
One Meter of cable with– 7 ppm/degC– V/C = 67%
Result: ~35 femtoseconds/degC
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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At 2815 MHz: 1 degree of phase ~ 1 picosecond
The Team
Entered into a collaboration with LBNL to apply their femtosecond synchronization system to the SPX requirements
The team– ANL
• Frank Lenkszus• Tim Berenc• Ned Arnold• Hangjie Ma• Bob Laird• Tom Fors
– LBNL• John Byrd• Russell Wilcox• Larry Doolittle• Gang Huang• Jim Greer• Keri Campbell
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DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
The LBNL Femtosecond-Phase Stabilization System Measures the optical phase delay through a fiber with a heterodyne
interferometer.– The optical frequency is offset by an RF frequency (~100 MHz)– The original optical frequency is heterodyned (mixed) with the offset optical
frequency to produce an RF beat signal of 100 MHz– Changes in optical phase translate to identical changes in the 100 MHz beat
signal phase– Offers a large leverage over stabilization in the RF domain (six-order-of-
magnitude)– One degree of phase change in the 1560 nm optical domain (~ 21
attoseconds) translates to 1 degree of phase change in the RF domain (~25 picoseconds)
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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“Demonstration of Femtosecond-Phase Stabilization in 2 km Optical Fiber”, J. Staples, R. Wilcox, J. Byrd, LBNL, Proceedings of PAC07 (MOPAS028)
LBNL Scheme for Stable Transmission of RF Signals
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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LBNL Results
2.2 km fiber– 19.4 fs rms @ 2850 MHz (60 hours)– Variation ~1000 greater without correction
200 m fiber– 8.4 fs rms @ 2850 MHz (20 hours)
For SPX/SPX0, assigned 20 fs rms over 0.1 Hz to 1 kHz for phase reference distribution
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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Reference: “Stable transmission of radio frequency signals on fiber links using interferometric delay sensing”, R. Wilcox, J. Byrd, L. Doolittle, G Huang, J. Staples, Optics Letters, Vol 34, No. 20, pp 3050-3052 (Oct 15, 2009)
SPX Timing/Synchronization Scope
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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Fiber Optic Cable
Beam-Line Laser Control
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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Feedback
Cavity phase errors cause a vertical kick to the beam– Detected as orbit distortion by BPMs
A Beam Arrival Time Monitor (BAT) located at the upstream cavity will feedback to the main LLRF to stabilize beam arrival time.
– But the BAT will not be specified to be stable below 0.01 Hz. Uncompensated beam arrival time errors will cause a common mode
phase error at the upstream cavity. Common mode and differential mode phase errors are distinguishable by
nature of the orbit distortion caused by each. Feedback from the BPM system to the to the upstream and downstream
LLRF phases will compensate for both types of errors. Feed forward from the upstream cavity phase to the Laser controller will
cause the laser to track the x-ray pulse phase.
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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SPX Timing for Diagnostics
Beam Arrival Time Monitor– 352 MHz reference
Residual Tilt Monitor– 352 MHz reference
Vertical Beam Size Monitor– No timing reference required
BPMs– Use existing timing/synchronization signals
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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Timing/Synchronization R&D
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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SPX0: What’s not Included
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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Fiber Optic Cable
Not In Scope for SPX0
SPX0 Timing/Synchronization Block Diagram
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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Timing/Sync Differences Between SPX and SPX0 Compensation for drifts in the coax cable between A014 and SPX zone is
not included Beam-Line laser controller/stabilizer is not included in SPX0
– Was descoped as a cost reduction measure– Not needed for short (8 hour) runs with wider SPX0 x-ray pulse width
Sync heads are different (4 cavity vs 1 cavity sync head) LLRF Phase stabilizer function is collocated in LLRF receiver chassis for
SPX0 and in a separate chassis for SPX
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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SPX0 Receiver
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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Beat Module
Phase Detect
SYNC Head (LCLS version)
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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R&D Status
Transmitter/Sender is in fabrication at vendor– Expect completion by 12/12
RF and Optical Sync Heads are in fabrication at vendor– Delivery scheduled for 1/30/13
Four receiver chassis have been assembled at LBNL– Porting of Phase Stabilizer code is in process
Preliminary system test complete by LBNL - 3/31/13
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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SPX Timing and Synchronization Risks/Mitigation To meet Common Mode Phase specification long term
– Use Feedback From Storage Ring BPMs within the SPX zone to LLRF cavity phase to compensate
– Use feedback from Beam Arrival Time Monitor to SR Main LLRF To meet Differential Mode Phase Specification long term
– Use Feedback From Storage Ring BPMs outside the SPX zone to LLRF cavity phase to compensate
To meet long term beam line laser to x-ray pulse synchronization specification– Use feed forward from the upstream cavity phase to beam-line laser
phase to track x-ray pulse
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DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
Timing/Synchronization ES&H
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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Integrated Safety Management System (ISMS)– APS-U Project following Argonne’s ISMS program requirements – Argonne Integrated Safety Management System (ISMS) Description recently
revised and submitted to DOE ASO• Describes framework for integrating ESH requirements with mission objectives• References Argonne LMS procedures which implement specific portions of the
ISMS
Electrical Safety– All equipment will be NRTL inspected before testing/operating
Laser Safety– Transmitter/Sender reviewed by Laser Safety Officer– Laser Light Completely contained in fibers
Labor Non-Labor TOTAL ($k)
U1 Short Pulse X-Ray (SPX) 997 1,250 167 251 2,664 U1 02.01.03 - SPX R&D 334 639 24 85 1,083
02.01.03.03 - Timing & Synchronization R&D 334 639 24 85 1,083 02.01.03.03 - AWCP (includes ANL and LBNL) 79 108 - 17 204 02.01.03.03.02 - LBNL Collaboration - Timing/Sync Phase II 7 169 4 8 188 02.01.03.03.03 - LBNL Collaboration - Timing/Sync Phase III 14 50 2 5 71 02.01.03.03.04 - Transfer LBNL Stabilizer Fiber Link Technology 7 - - 1 8 02.01.03.03.06 - Synch Heads (4) 7 124 4 5 140 02.01.03.03.07 - Link Transmitter/Sender 16 123 4 7 150 02.01.03.03.08 - Three Channel Phase Reference System 91 - 2 16 109 02.01.03.03.09 - Timing & Synchronization Cable Plant 20 16 1 5 42 02.01.03.03.10 - General Timing/Synchronization R&D Design 37 - 0 6 44 02.01.03.03.11 - Support SPX R&D In-Ring Testing 52 - 5 11 68 02.01.03.03.12 - LBNL Collaboration - Timing/Sync Phase IV (In-Ring Support) 2 50 3 3 58
U1 03.03 - SPX Production 663 610 143 165 1,581 03.03.03 - Timing & Synchronization 663 610 143 165 1,581 03.03.03 - ACWP 43 - 2 8 53 03.03.03.01 - Sync Heads for LLRF 14 87 11 6 118 03.03.03.02 - Sync Head for Beam-Line 8 38 4 3 54 03.03.03.03 - Phase Stabilizer for LLRF 64 29 9 15 117 03.03.03.04 - Laser Controller/Phase Stabilizer 42 23 6 11 82 03.03.03.05 - Phase Stabilizer for A014 to SPX Reference Line 87 54 13 20 174 03.03.03.06 - Phase Reference for Diagnostics 1 1 0 0 2 03.03.03.07 - 16 - Channel Link Transmitter/Sender 9 - 1 2 12 03.03.03.08 - 16 - Channel Phase Reference System 60 - 13 14 87 03.03.03.09 - Timing & Synchronization Cable Plant 14 28 4 4 50 03.03.03.10 - General Timing/Synchronization Design 249 - 17 47 313 03.03.03.11 - Support In-Ring Testing 67 - 18 16 101 03.03.03.12 - LBNL Collaboration - Timing/Sync (In-Ring Support) 2 50 12 3 68 03.03.03.13 - LBNL Collaboration - Timing/Sync (Design Support) 2 300 33 16 351
WBS DIV OH + ANL
G&A ($k)ESCALATION
($k)
DIRECT ($k)
SPX Timing and Synchronization Scope and WBSU1.02.01.03 & U1.03.03
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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LBNL Collaboration
Vendor Quotes
Vendor Quotes
LBNL Collaboration
SPX Timing and Synchronization BOE Contingency U1.02.01.03 & U1.03.03
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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SPX Timing and Synchronization Obligation Profile U1.02.01.03 & U1.03.03
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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SPX R&D and Production MilestonesU1.02.01.03 & U1.03.03
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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u START: Preliminary Design - SPX0 4/10
u START: Preliminary Design - SPX 2/12
u COMP: PDR - SPX0 7/12
u COMP: PDR - SPX 1/13
u SHIP: SPX0 Cryomodule to ANL 4/14
u COMP: SPX0 Cryomodule Test 6/14
u START: SPX0 Installation 8/14 (Note: Aug-14 Maintenance Shutdown)
u COMP: SPX0 Installation 10/14
u AVAIL: SPX0 Ready for Operation 1/15
u START: Final Design - SPX 6/14
u COMP: Final Design 9/15
u START: Major Procurement 10/15
u AWARD: Cryoplant Contract 10/15
u START: Cryoplant Installation 9/17
u COMP: Cryoplant 3/18
SHIP: Cryomodule #1 to ANL 10/17 uSTART: Cryom #1 Installation 5/18 u
COMP: Cryom #1 Installation 6/18 uAVAIL: Cryomodule #1 Ready for Operation 8/18 u
SHIP: Cryomodule #2 to ANL 8/18 uSTART: Cryom #2 Installation 12/18 u
COMP: Cryom #2 Installation 1/19 uAVAIL: Cryomodule #2 Ready for Operation 3/19 u
SPX SYSTEM
FY18 FY19 FY20FY10 FY11 FY12 FY13 FY14 FY15 FY16 FY17
SPX Timing and Synchronization Milestones U1.02.01.03 & U1.03.03
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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q COMP: Study & Report Requirements - SPX0 7/12
q AVAIL: LBNL Stabilizer Fiber Link Technology - SPX0 4/13
q AVAIL: Three Channel Phase Ref System 1/14
q COMP: SPX0 Timing and Synchronization 1/15
q START: Final Design 6/14
q AWARD: NRE Sync Heads for LLRF 4/15
q COMP: Final Design 8/15
q COMP: Preliminary System Test - Phase Ref System 6/16
START: Phase Reference Syst #1 Installation 5/18 qCOMP: Final System Test Phase Reference Syst #1 - 7/18 q
START: Phase Reference System #2 Installation 12/18 qCOMP: Final System Test Phase Reference Syst #2 - 2/19 q
COMP: Timing & Synchronization 3/19 q
FY19 FY20FY10 FY11 FY12 FY13 FY14 FY15
TI
MING
& SYNC
FY16 FY17 FY18
SPX Timing and Synchronization Summary Schedule U1.02.01.03 & U1.03.03
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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Timing/Synchronization Work After CD-2
Final Design will be completed Laser/X-ray pulse synchronization R&D will continue at LBNL SPX0 will give opportunity to verify that cavity
synchronization can be achieved Will be a Final Design Review prior to CD3
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DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
Summary Timing/Synchronization
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This system provides the timing/synchronization required for the SPX cavities and beam-line laser.
The requirements are given in the SPX PRD.— Primary Challenge is differential phase tolerance.
The preliminary design is complete— Major components are in prototyping stage
• Transmitter/Sender• RF and Optical Sync Heads• Link stabilizer
Entered into collaboration with LBNL to apply their femtosecond timing/synchronization system to the SPX project.
— LBNL’s system should allow stringent timing/synchronization requirements to be met.
— Expect LBNL system to contribute less than 20 femtoseconds rms to synchronization errors.
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
Summary Timing/Synchronization (Continued)
Installation Plan– SPX0:
• Start 8/26/13• Complete 12/4/13
– SPX• Link Transmitter, Cables, Phase Stabilizers
– Start 1/6/15– Complete 11/9/15
• Phase Reference for Cyro #1– Start 4/23/18– Complete 5/18/18
• Phase Reference for Cyro #2– Start 12/10/18– Complete 1/15/19
The total cost is $2664k We are ready for CD2
DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012
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