LCLS Coordinate System LTU Design Overview Electron Beam Dump Design Overview Design Risk

LCLS Technical Design ReviewLCLS Technical Design Review December 2003December 2003 Tim Montagne Tim Montagne LTU & Electron Beam DumpLTU & Electron Beam Dump

Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center

LCLS Coordinate SystemLCLS Coordinate System LTU Design OverviewLTU Design Overview Electron Beam Dump Design Electron Beam Dump Design

OverviewOverview Design Risk Design Risk

LTU & Electron Beam DumpTim Montagne, LCLS Linac

December 12, 2003



LCLS Coordinate SystemLCLS Coordinate System

The coordinate The coordinate system will be system will be defined in LCLS defined in LCLS Technical Note Technical Note LCLS-TN-03-8.LCLS-TN-03-8.The coordinate The coordinate system is defined system is defined relative to the relative to the Linac coordinate Linac coordinate system.system.



CD1 DL2 Becomes LTUCD1 DL2 Becomes LTU

CD1 DL2 to LTU Design ComparisonCD1 DL2 to LTU Design ComparisonThe DL2 design was changed to allow expansion of LCLS into The DL2 design was changed to allow expansion of LCLS into multiple beamlines.multiple beamlines.CD1 DL2 Design CD1 DL2 Design

The CD1 DL2 design allowed for 2 beamlines, North and The CD1 DL2 design allowed for 2 beamlines, North and South.South.The original DL2 length was The original DL2 length was 65.5m65.5m . .

LTU DesignLTU DesignThe present LTU design allows for 5 beamlines.The present LTU design allows for 5 beamlines.The LTU length is The LTU length is 293.3 m.293.3 m.



LTU Future Expansion with New Undulator Lines

113113

UndulatorUndulatorStartStart

Future -2Future -2ºlineline

22ndnd FEL Line North FEL Line North

Future +2 Future +2 º lineline

Future + 4 Future + 4 º Soft X-ray LineSoft X-ray Line

spont. und.

~1.5º

11stst FEL Line South FEL Line South

research yard (FFTB)

4 m



LTU Design OverviewLTU Design Overview

LTU Design LayoutLTU Design LayoutThe LTU The LTU beamline device beamline device layout is layout is generated generated automatically automatically using MAD deck using MAD deck coordinates.coordinates.

Beamline DevicesBeamline DevicesKnown device Known device models are used models are used for defined for defined assemblies.assemblies.Placeholder Placeholder objects are used objects are used for undefined for undefined designs.designs.



LTU Design Overview – Magnet Support ConceptLTU Design Overview – Magnet Support Concept

LTU Magnet SupportLTU Magnet SupportThe quadrupole and X-Y The quadrupole and X-Y corrector pair are mounted on a corrector pair are mounted on a high stiffness modular support high stiffness modular support weldment.weldment.



LTU Design Overview – Magnet Support ConceptLTU Design Overview – Magnet Support Concept

LTU Magnet SupportLTU Magnet SupportThe quadrupole and X-Y corrector The quadrupole and X-Y corrector pair are mounted on a high pair are mounted on a high stiffness modular support stiffness modular support weldment.weldment.

Support InstallationSupport InstallationEach support pad will be installed Each support pad will be installed and aligned prior to support and aligned prior to support installation.installation.This arrangement was used in This arrangement was used in PEP-II and Spear 3.PEP-II and Spear 3.



LTU Vacuum System DesignLTU Vacuum System Design

Vacuum System DesignVacuum System DesignOptimized conductance.Optimized conductance.Drift tubes <16 RMS finish.Drift tubes <16 RMS finish.Drift tube material high electrical conductivity.Drift tube material high electrical conductivity.Vacuum sector length optimized for short pumpdown time during service.Vacuum sector length optimized for short pumpdown time during service.

Ion Gauge

Isolation Gate ValveIsolation Gate Valve

Right Angle Valve

Spare Port

Spare Port

Quadrupole

BPM

Ion Pump

Ion PumpCorrector

CorrectorBellows Module

Bellows Module

Vacuum Sector Schematic



LTU Device SummaryLTU Device Summary

37x 37x .91Q17.72 quadrupole .91Q17.72 quadrupole magnetmagnet4x 4x 4D102.36 dipole magnet4D102.36 dipole magnet22x 22x X corrector magnetX corrector magnet22x 22x Y corrector magnetY corrector magnet2x 2x Y bend magnet (transition Y bend magnet (transition BSY to LTU)BSY to LTU)38x 38x stripline typestripline type BPMBPM8x 8x RF BPMRF BPM3x 3x X collimatorX collimator3x 3x Y collimatorY collimator2x 2x Energy CollimatorEnergy Collimator

3x 3x Bunch length monitorBunch length monitor1x 1x Single beam kicker magnet Single beam kicker magnet and dumpand dump4x 4x Wire scannerWire scanner3x 3x ToroidToroid1x 1x CSR Bunch Length MonitorCSR Bunch Length Monitor1x 1x OTR Bunch Length MonitorOTR Bunch Length Monitor2x 2x OTR Profile MonitorOTR Profile Monitor



Electron Beam Dump Design OverviewElectron Beam Dump Design Overview

Electron Beam Electron Beam Dump DesignDump Design

The dump layout The dump layout is automatically is automatically positioned using positioned using MAD deck MAD deck coordinates.coordinates.

Radiation PhysicsRadiation PhysicsThe beam dump The beam dump design is in design is in review by review by radiation radiation physics.physics.Beam DumpBeam Dump

Dipole Bend MagnetDipole Bend Magnet

Safety Bend MagnetSafety Bend Magnet

Electron BeamElectron Beam

X-Ray LineX-Ray Line



Electron Beam Dump Device SummaryElectron Beam Dump Device Summary

1x 1x 4D102.36 dipoles4D102.36 dipoles2x 2x Stripline type BPM Stripline type BPM 3x 3x .91Q17.72 quadrupoles.91Q17.72 quadrupoles2x 2x X collimatorX collimator3x 3x Y collimatorY collimator2x 2x Y safety Y bend magnetY safety Y bend magnet1x 1x Profile monitorProfile monitor4x 4x Y bend magnetY bend magnet1x 1x Beam dumpBeam dump



Design RiskDesign Risk

Low Risk DesignsLow Risk DesignsQuadrupole MagnetsQuadrupole MagnetsDipole MagnetsDipole MagnetsCorrector MagnetsCorrector MagnetsBPMsBPMsToroidsToroidsCollimatorsCollimatorsTune up DumpsTune up DumpsAlignment StagesAlignment StagesSupporting StructuresSupporting StructuresVacuum SystemVacuum System

Medium Risk DesignsMedium Risk DesignsPolished, High Electrical Polished, High Electrical Conductivity Vacuum Conductivity Vacuum ChambersChambersWire ScannersWire ScannersOTR Profile MonitorOTR Profile Monitor

High Risk DesignsHigh Risk DesignsElectro-Optical Bunch Electro-Optical Bunch Length monitorLength monitorCSR Bunch Length CSR Bunch Length MonitorMonitorOTR Bunch Length OTR Bunch Length MonitorMonitorRF BPMRF BPM

Documents

LCLS Coordinate System LTU Design Overview Electron Beam Dump Design Overview Design Risk