SPX – Timing and Synchronization WBS U1.03.03.03 WBS U1.02.01.03.03 Frank Lenkszus Senior...

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

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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

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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


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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

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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


< 0.077 dega 0.01 Hz – 1 kHz Keep rms beam motion outside of SPX within beam stability requirements


< 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


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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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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)


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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


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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


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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


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Fiber Optic Cable

Beam-Line Laser Control


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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.


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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


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Timing/Synchronization R&D


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SPX0: What’s not Included


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Fiber Optic Cable

Not In Scope for SPX0

SPX0 Timing/Synchronization Block Diagram


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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


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SPX0 Receiver


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Beat Module

Phase Detect

SYNC Head (LCLS version)


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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


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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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Timing/Synchronization ES&H


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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


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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


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SPX Timing and Synchronization Obligation Profile U1.02.01.03 & U1.03.03


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SPX R&D and Production MilestonesU1.02.01.03 & U1.03.03


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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


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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


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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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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.


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


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SPX – Timing and Synchronization WBS U1.03.03.03 WBS U1.02.01.03.03 Frank Lenkszus Senior...

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