[email protected] linac coherent light source stanford synchrotron radiation laboratory...

LCLS Linac TDR,LCLS Linac TDR,December 12, 2003December 12, 2003

Leif Eriksson - SLACLeif Eriksson - [email protected]@slac.stanford.edu

Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center

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LCLS Technical Design Review, LCLS Technical Design Review, TDRTDR

LCLS Technical Design Review, LCLS Technical Design Review, TDRTDR

LCLS Linac ProperLCLS Linac ProperLCLS Linac ProperLCLS Linac Proper

http://www-ssrl.slac.stanford.edu/




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LCLS Linac Technical ReviewLCLS Linac Technical Review

Agenda :Agenda : Area Presentation of AreaArea Presentation of Area

Boundaries to LCLS Injector and LTUBoundaries to LCLS Injector and LTU Engineers and designersEngineers and designers

Path from MAD to LayoutPath from MAD to Layout Path of information and how it relates to the projectPath of information and how it relates to the project Layout of L1 to L3Layout of L1 to L3

Scope of Work: Scope of Work: BC1 & BC2BC1 & BC2

Paul Emma’s slidePaul Emma’s slide

Motion diagramMotion diagram

First rough sketchFirst rough sketch

Visit to ANL - Problems with the APS bunch compressor – Bellows – Telescopic Visit to ANL - Problems with the APS bunch compressor – Bellows – Telescopic vacuum chambervacuum chamber

Present designPresent design

Risk assessmentRisk assessment

Moving components aroundMoving components aroundSector 21 to sector 30Sector 21 to sector 30

Agenda :Agenda : Area Presentation of AreaArea Presentation of Area

Boundaries to LCLS Injector and LTUBoundaries to LCLS Injector and LTU Engineers and designersEngineers and designers

Path from MAD to LayoutPath from MAD to Layout Path of information and how it relates to the projectPath of information and how it relates to the project Layout of L1 to L3Layout of L1 to L3

Scope of Work: Scope of Work: BC1 & BC2BC1 & BC2

Paul Emma’s slidePaul Emma’s slide

Motion diagramMotion diagram

First rough sketchFirst rough sketch

Visit to ANL - Problems with the APS bunch compressor – Bellows – Telescopic Visit to ANL - Problems with the APS bunch compressor – Bellows – Telescopic vacuum chambervacuum chamber

Present designPresent design

Risk assessmentRisk assessment

Moving components aroundMoving components aroundSector 21 to sector 30Sector 21 to sector 30





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LI1 – LI3 layoutLI1 – LI3 layout

LCLS Linac begins sector 21.LCLS Linac begins sector 21.The LCLS Injector Group The LCLS Injector Group “owns” SLAC Linac sector “owns” SLAC Linac sector 20.20.

The LCLS Linac Group The LCLS Linac Group “owns” SLAC Linac sector 21 “owns” SLAC Linac sector 21 to sector 30to sector 30

Leif Eriksson is the Leif Eriksson is the Mechanical Engineer for the Mechanical Engineer for the LCLS Linac properLCLS Linac proper

Designer: Nick BraughtonDesigner: Nick Braughton

Tim Montagne is the Tim Montagne is the Mechanical Engineer for the Mechanical Engineer for the LCLSLCLS

Designer: Stephan DaviesDesigner: Stephan Davies

LCLS Linac begins sector 21.LCLS Linac begins sector 21.The LCLS Injector Group The LCLS Injector Group “owns” SLAC Linac sector “owns” SLAC Linac sector 20.20.

The LCLS Linac Group The LCLS Linac Group “owns” SLAC Linac sector 21 “owns” SLAC Linac sector 21 to sector 30to sector 30

Leif Eriksson is the Leif Eriksson is the Mechanical Engineer for the Mechanical Engineer for the LCLS Linac properLCLS Linac proper

Designer: Nick BraughtonDesigner: Nick Braughton

Tim Montagne is the Tim Montagne is the Mechanical Engineer for the Mechanical Engineer for the LCLSLCLS

Designer: Stephan DaviesDesigner: Stephan Davies

Linac Proper

Linac Proper

LTULTU





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MAD TO LAYOUTMAD TO LAYOUT

MAD Deck Symbols List MD Automated Layout program Straw-man figure layout Area layout Component Layout Installation DwgsPaul Emma Leif Eriksson/Nick Braughton Carl Rago/Paul Stephens Leif Eriksson/Nick Braughton

Example: Linac Sector 21, Bunch Compressor 1

BC1

See distributed hard copy for layout of additional sectors





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LEUTL/APS Bunch compressorLEUTL/APS Bunch compressor

Visit to ANLVisit to ANL

Meet with Dr. Sushil Sharma & Meet with Dr. Sushil Sharma & Al BarcikowskiAl Barcikowski

Problems with telescopic Problems with telescopic vacuum chamber – excessive vacuum chamber – excessive frictionfriction

Not needed for LCLSNot needed for LCLS

Problems with race track shaped Problems with race track shaped bellows in the dipolesbellows in the dipoles

Move bellows outside of Move bellows outside of dipoles?dipoles?

Have dwg’s for APS Bunch Have dwg’s for APS Bunch Compressor – Good model to Compressor – Good model to begin withbegin with

APC BC diagnostic assembly APC BC diagnostic assembly spec’s currently evaluated by spec’s currently evaluated by Emma/KrejcikEmma/Krejcik

Visit to ANLVisit to ANL

Meet with Dr. Sushil Sharma & Meet with Dr. Sushil Sharma & Al BarcikowskiAl Barcikowski

Problems with telescopic Problems with telescopic vacuum chamber – excessive vacuum chamber – excessive frictionfriction

Not needed for LCLSNot needed for LCLS

Problems with race track shaped Problems with race track shaped bellows in the dipolesbellows in the dipoles

Move bellows outside of Move bellows outside of dipoles?dipoles?

Have dwg’s for APS Bunch Have dwg’s for APS Bunch Compressor – Good model to Compressor – Good model to begin withbegin with

APC BC diagnostic assembly APC BC diagnostic assembly spec’s currently evaluated by spec’s currently evaluated by Emma/KrejcikEmma/Krejcik





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LCLS Bunch Compressor 1 & 2, The BasicsBunch Compressor 1 & 2, The BasicsLCLS Bunch Compressor 1 & 2, The BasicsBunch Compressor 1 & 2, The Basics

BPM critical for energy feedback (20 BPM critical for energy feedback (20 m resolution)m resolution)

screenscreen collimatorcollimatorquadrupolequadrupole

offset: 17 to 30 offset: 17 to 30 cm (24 cm cm (24 cm nominal)nominal)

Leif E

LCLS Bunch Compressor, Motion Diagram 10/24/2003

NOT TO SCALE!

Beam Direction

Tweaker Quad A

Tweaker Quad B

Stepper Motor +Linear Actuator Pivot Point X 4

Ball Slide X 2

Dipole D

Dipole C Dipole B

Dipole A

Bellow

Bellow Bellow

Bellow

Diagnostic

Devices

Paul Emma’s picture

1st Sketch





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LCLS Bunch Compressor 1 & 2, The Current DesignBunch Compressor 1 & 2, The Current DesignLCLS Bunch Compressor 1 & 2, The Current DesignBunch Compressor 1 & 2, The Current Design

Design StatusDesign StatusSee right hand-side picSee right hand-side pic

Cost well understood for LCLS Cost well understood for LCLS resource loaded scheduleresource loaded scheduleLow to moderate risk for:Low to moderate risk for:

TechnologyTechnologyCostCostScheduleSchedule

Some additional issues for BC2:Some additional issues for BC2:Longer than BC1Longer than BC1

Open issues:Open issues:Diagnostic packageDiagnostic package

Design StatusDesign StatusSee right hand-side picSee right hand-side pic

Cost well understood for LCLS Cost well understood for LCLS resource loaded scheduleresource loaded scheduleLow to moderate risk for:Low to moderate risk for:

TechnologyTechnologyCostCostScheduleSchedule

Some additional issues for BC2:Some additional issues for BC2:Longer than BC1Longer than BC1

Open issues:Open issues:Diagnostic packageDiagnostic package





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Scope of Work: Sector 21, 22 & 23Scope of Work: Sector 21, 22 & 23Sector Action RF Comments

21-1b and 21-1c disk-loaded- Shortened from 10-foot sections 50% of the power from klystron Done for SLC in sector 2 (i.e. waveguides, DLWGs to 9.4-foot sections 21-1 will feed 21-1b, while 21-1c 2-4a,b,c); cells will be removed

and 21-1d will each receive 25% from the downstream ends of the (this is the present power structures, and the upstream feed arrangement, no change ends will remain located at their necessary) present positions (there will be a

QA-type quadrupole and BPM installed between 21-1b and 21-1c, and between 21-1c and 21-1d)

40-foot DLWG at 21-2 Removed to make room for BC1 Linac quad LI21 201 and it's associated BPM will be moved 1.066 m downstream of it's present location; linac quad LI21 301 and it's associated BPM will be moved 1.247 m downstream of it's present location

21-3a 10-foot DLWG Removed to make room for BC1 50% of the power from klystron The 21-2 modulator will be used 21-3 will feed 21-3b; the power to power the X-band structure feeds to 21-3c and 21-3d will immediately downstream of 21-1dremain as they are (25% each)

Sector 22 No ChangeSector 23 No Change

Technical risk Low

Budgetary risk Low to moderate

Schedule risk Moderate





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Scope of Work: Sector 24 & BC2Sector 24 & BC2Scope of Work: Sector 24 & BC2Sector 24 & BC2

24-3d 10-foot DLWG Removed to make room for a 50% of the power from klystron As was done for SLC in sector new SLC-style wire scanner just 24-3 will feed 24?3c; the power 28 (i.e. 28-1); quad LI24 401 will upstream of quad LI24 401 feeds to 24-3a and 24-3b will remain where it is

remain as they are (25% each)

24-4d 10-foot DLWG Removed to make room for a new SLC 50% of the power from klystron -style wire scanner just upstream of 24-4 will feed 24-4c; the power of quad LI24 501; quad LI24 501 will feeds to 24-4a and 24-4b will remain where it is remain as they are (25% each)

24-5d 10-foot DLWG Removed to make room for a new SLC 50% of the power from klystron 24-5 -style wire scanner just upstream of will feed 24-5c; the power feeds to quad LI24 601; quad LI24 601 will 24-5a and 24-5b will remain as they remain where it is are (25% each)

24-7 and 24-8 40-foot DLWGs + Removed to make room for BC2 Linac quad LI24 701 will remain where all components in the 24-9 drift it is; linac quad LI24 801 and it's space associated BPM will be relocated as

part of the BC2 installation; linac quad LI24 901 and it's associated BPM will be moved 2.604 m downstream of it's present location





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Scope of Work: Sector 27 & 28Sector 27 & 28Scope of Work: Sector 27 & 28Sector 27 & 2825-1b All NPI components from the exit of

the 25-1b DLWG to immediately upstream of linac quad LI25 201 will be removed. Two NPI QA-type quadrupoles (NP25 units 154 and 156) will then become available for use in BC1. linac quad LI25 201 will remain where it is

25-1c (the old NPI injection point), One standard 10-foot DLWG will be Each of the 10-foot DLWG Making 25-1 a standard 40-foot installed sections (25?1a,b,c,d) will receive accelerator section

25% of the power from klystron 25-1

25-5a 10-foot DLWG Removed to make room for an 8-foot 50% of the power from klystron 25-5 The 24-8 klystron and modulator will transverse deflecting structure just will feed 25-5b; the power feeds to be used to power the transverse downstream of quad LI25 501; quad 25-5c and 25-5d will remain as they deflecting structure at 25-5aLI25 501 will remain where it is are (25% each)

Sector 26 No Change

27-6d 10-foot DLWG Removed to make room for a wire 50% of the power from klystron 27?6 scanner just upstream of quad LI27 will feed 27-6c; the power feeds to 701; quad LI27 701 will remain where 27-6a and 27-6b will remain as they are it is; linac wire scanner LI28 44 will be (25% each)moved from the 27-9 drift section to this location

28-7d 10-foot DLWG Removed to make room for a wire 50% of the power from klystron 28-7 scanner just upstream of quad LI28 will feed 28-7c; the power feeds to 801; quad LI28 801 will remain where 28-7a and 28-7b will remain as they are it is; linac wire scanner LI28 544 will (25% each)be moved from 28-5d to this location

28-5d Making 28-5 a standard 40-foot Each of the 10-foot DLWG sections accelerator section (28?5a,b,c,d) will receive 25% of the

power from klystron 28-5Sector 29 No ChangeSector 30 No Change


[email protected] linac coherent light source stanford synchrotron radiation laboratory...

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