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Eric Bong LCLS FAC Injector-Linac Update [email protected] u April 7, 2005 LCLS Injector/Linac LCLS Injector/Linac Systems Update Systems Update E. Bong E. Bong LCLS FAC LCLS FAC April 7, 2005 April 7, 2005 LCLS LCLS

Eric Bong LCLS FAC Injector-Linac [email protected] April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

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Page 1: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

LCLS Injector/Linac Systems LCLS Injector/Linac Systems UpdateUpdateE. BongE. Bong

LCLS FACLCLS FACApril 7, 2005April 7, 2005

LCLSLCLS

Page 2: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

LCLS Injector/Linac Systems Update

Plan Changes Since Last FAC

FY05 Schedule & LLP Activity

Shutdown Strategy

Design & Fabrication Status

Response to Last FAC Comments

Page 3: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Nominal Nominal LCLSLCLS Linac Parameters for 1.5- Linac Parameters for 1.5-Å FELÅ FEL

Single bunch, 1-nC charge, 1.2-Single bunch, 1-nC charge, 1.2-m m sliceslice emittance, 120-Hz repetition rate… emittance, 120-Hz repetition rate…

(RF phase: (RF phase: rfrf = 0 is at accelerating crest)= 0 is at accelerating crest)

SLAC linac tunnelSLAC linac tunnel research yardresearch yard

Linac-1Linac-1L L 9 m9 m

rf rf 25°25°

Linac-2Linac-2L L 330 m330 mrf rf 41°41°

Linac-3Linac-3L L 550 m550 mrf rf 10°10°

BC-1BC-1L L 6 m6 m

RR5656 39 mm39 mm

BC-2BC-2L L 22 m22 m

RR5656 25 mm25 mm LTULTUL L =275 m=275 mRR56 56 0 0

DL-1DL-1L L 12 m12 mRR56 56 0 0

undulatorundulatorL L =130 m=130 m

135 MeV135 MeVz z 0.83 mm 0.83 mm 0.10 %0.10 %

250 MeV250 MeVz z 0.19 mm 0.19 mm 1.6 %1.6 %

4.54 GeV4.54 GeVz z 0.022 mm 0.022 mm 0.71 %0.71 %

14.1 GeV14.1 GeVz z 0.022 mm 0.022 mm 0.01 %0.01 %

SLAC linacSLAC linac 21-1b21-1b21-1d21-1d XX

Linac-Linac-XXL L =0.6 m=0.6 mrfrf= =

21-3b21-3b24-6d24-6d

25-1a25-1a30-8c30-8c

E-DumpE-Dump

Linac-0Linac-0L L =6 m=6 m

6 MeV6 MeVz z 0.83 mm 0.83 mm 0.05 %0.05 %

newnew

rfrfgungun

Drive Laser not shown Thanks Paul Emma

Page 4: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

System Changes Since Last FAC

Continuing resolution delayed project fundingOctober electrical accident halted accelerator operationsReview of SLAC Safety Management PlanHalt of program prompts revision of FY05 run and down schedulesFY05 down moved to October ’06, shortened to one monthInjector and Linac System Management CombinedInjector and Linac Systems engineering and design staff combined eliminating duplication of effortInjector WBS converted from geographical to product based. Manpower loaded schedule revised to condense structure into products rather than individual components. Schedule changed to better track cost performance.

Page 5: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Plan Changes Since Last FAC

Design, fabrication and installation schedule updated to reflect change in Linac down dates.RF Gun design and fabrication moved in-house to mitigate schedule and technical risk.Added LLNL and ANL collaborations on drive laser temporal, spatial and THG studies.Added UCLA collaboration to develop single shot bunch length measurement device.Formed agreement with Klystron department for RF component design support including gun design.Utilizing ILC personnel for dual-feed structure design.

Page 6: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

FY05 Schedule & LLP Activity

The change in ‘05 down time reduced the scope of the planned installation in the Injector and changed the design emphasis from the Linac to the Injector side of the shielding wall.LLP consists of fabrication activities in the Injector which can be started in FY05, the X-Band system components and BC1 & BC2 dipoles$2M bulk vacuum purchase agreement – June 05The portion of the Injector system in the Linac Housing can not be fabricated in FY05.The Linac L1 segment design is complete and could be installed during the October 2005 down.

Page 7: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Injector-Linac Installation Strategy

PORCU

PINE CATHODE

HOLDE

R

UHV A

LL METAL

GATE VALVES

SPOOLS FRO

M VALVE

SEAL

LONG B

ELLOWS

ASSEM

BLY

TREATMEN

T CHAM

BER

VACUU

M PUMPS

Laser System June 2006

Gun Region April 2006

Accel Region March 2006

Heater Region January 2006

Wall Region October 2005

Injection Region August 2006

Spect Region August 2006

Waveguide through wall and up penetration October 2005

Installation schedule sets design and fabrications deadlines

Page 8: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Injector-Linac Installation Strategy

Quad + BPM, YCOR,XCOR,

QE, Toroid

Treaty Point LCLS Injector/LCLS Linac

LCLS Injector LCLS Linac

Emittance Diagnostics.

Bunch Compressor &

Diagnostics

Two short accelerator structures, refurbished

Quads+BPMs,X&YCOR

X-Band Structure

(NLC)

Linac 1 (L1)

Electrons

Bunch Compressor 1 (BC1)

L1 Fabrication could be complete for October 2005 Installation

X-Band Fabrication started – Installation FY06 Down

BC1 Articulation ready for fabrication now

BC1 installation FY06 Down

Remainder of Linac installation FY07

Remove 5 S-Band Structures

Page 9: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Drive Laser Progress

Proposals received from vendors, evaluation in process.Pulse shaping and THG most difficult issues. As a result of BNL/DUVFEL pulse shaping studies, further collaboration set up with LLNL and ANL to study temporal, spatial and THG. Require studies to mitigate technical risk.Laser transport penetration tube design complete, earthquake safety approved, ready for fabrication. Integration and alignment of laser launch, RF gun and solenoid being investigated.3-D ellipsoidal distribution studies – C. LImborg

Page 10: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Injector RF Design Progress RF Gun

Solenoid design complete. Relative alignment details under study.RF design altered due to review recommendations

Increased Mode separationZ-Coupling from Theta-CouplingRF design complete mechanical design started (in –house)Monolithic dual feed

Unresolved issues:Final design for bulk cooling systemLoad lock deferred

L0 Accelerator structuresDual feed RF design pieced-together for solenoid assemblyBoth L0A and L0B dual feed on inputMechanical design in process

Removed T-Cav from Li-11Injector waveguide routing through wall in design

Page 11: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Linac RF Design Progress

X-Band SystemX-Band System layout reviewed.Waveguide components maximizing use of available components and designs.ILC cold decision X-Band system components available from NLC

Two partially completed XL4 Klystrons – fabrication resumedAvailable waveguide components selected and requestedX-Band structures selected

L1 Short accelerating structuresStructures available from spares, under evaluation for use.L1 design complete, drawings available. Can be installed 10-05

Support agreement made with Klystron Department for Injector and Linac RF work

Page 12: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

1 nC1 nC2.8 kA2.8 kA

0.2 nC0.2 nC2.0 kA2.0 kA

• Need 20% smaller emittance (0.8 Need 20% smaller emittance (0.8 m), but with m), but with 1/5 charge & 1/3 gun current (30 A)1/5 charge & 1/3 gun current (30 A)

• No more transverse wakes in linacNo more transverse wakes in linac• Almost no CSR in BC’sAlmost no CSR in BC’s• 2-times less peak-current jitter2-times less peak-current jitter• No undulator wakesNo undulator wakes• 3-times shorter X-ray pulse3-times shorter X-ray pulse• 1-nC still OK, but only ~twice the photons, and a 1-nC still OK, but only ~twice the photons, and a

muchmuch more challenging machine more challenging machine

no resistive wakeno resistive wake

Low Charge OperationsLow Charge Operations

1.11.110101212 photons photons

W. Fawley, W. Fawley, LBNLLBNL

no spikesno spikes

Z. Huang

Page 13: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Response to October 2004 FAC 1 -Do gun tests as early as possible, at vendor maybe

Gun will be designed and built in-house to use strength of SLAC RF design and to control technical risk. RF tests will proceed along with fabrication process including cold tests during cold fit-up through to 120 Hz hot-tests of final assembly.

-Consider creation of a gun test facility

Over the past eight years the GTF has revealed several problems with the prototype gun including correlated energy spread, tilt (transverse position to time correlation) on the beam and asymmetric beam at the gun exit to name just a few. These issues have been addressed in the LCLS design by increasing the 0 and pi mode separation, adding a dual feed coupler with racetrack geometry to both the gun and linac sections and adding a dipole and quadrupole corrector in the solenoid. In addition several diagnostic techniques for determining the beam correlations have been developed over the years that will be used in the LCLS injector to improve the overall beam quality.

A new gun test facility will be proposed. However, the facility is beyond the financial scope of the LCLS project. It is suggested that future SLAC funds be allocated to a new gun test facility which could have more benefit to SLAC than LCLS gun testing alone.

Page 14: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Response to October 2004 FAC 2 -Order 2 guns

Parts for two guns will be machined. Tests performed on the first set of parts will be used to dimensionally adjust the second set. The second set will be fully assembled. Hot tests on the second set will be used to dimensionally adjust the first set for final assembly.

-Recommend continued testing of laser pulse shaping at DUVFEL

Additional pulse shaping, third-harmonic-generation and launch optics testing will be conducted in collaboration LLNL and ANL.

-Consider doing electron beam tests at DUVFEL

Electron beam bunch length measurement tests will be performed at SPPS in collaboration with UCLA. Additional beamline component and controls tests are also planned in SPPS.

Page 15: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Response to October 2004 FAC 3 -Consider collaboration with LLNL on gun laser development

We are collaborating with LLNL on drive laser development. -Recommend a hot spare laser

A hot spare laser is not in the project baseline. However, it is planned to use contingency money, if available, will be used to purchase a second drive laser in FY08. The second laser may be a new design.

-Recommend the formation of a laser group

An LCLS laser group will be formed. A requisition is in place for a laser group leader. -Consider doing tests of "lock-in" detection of low gain at DUVFEL -Consider x-band waveform modulation as the input modulation for lock-in detection

Lock-in low gain FEL signal detection using X-Band waveform modulation was not investigated. The XTOD System investigated other low gain detection schemes.

Page 16: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Response to October 2004 FAC 4 -Show analysis and simulations of collimator performance at the

next review, including shower computations

Collimator simulations will be presented at the FAC. The simulations include dark current from the gun and various RF structures, linac and LTU collimation, and undulator protection. Shower calculations will be done soon, but may not be ready for the April 2005 FAC.

-Continue work on ESASE

ESASE work continues. LBNL is taking the lead on this study.

-Recommend x-y scanners for wire monitor, rather than diagonal

Performing modal analysis on existing design to determine if there is any real benefit to tripling the number of wire scanners in the project budget.

Page 17: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Response to October 2004 FAC 5 -Consider the design of a feedback loop that adjusts the laser based on electron beam measurements

Signal sources for laser feedback have been defined including bunch charge and bunch timing signals.

-Consider options for the ULTIMATE LCLS Master Oscillator

A reliable oscillator of proven technology will be installed for LCLS. Development work for the ULTIMATE master oscillator may be done in the future as an upgrade.

-Continue tests of THz measurement techniques at SPPS

THz bunch length measurements in SPPS will continue once the SLAC Linac resumes operations.

Page 18: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Response to October 2004 FAC 6 -Consider schemes to modulate X-band phase for optimal set-up -Place appropriate emphasis on challenging phase/amplitude control of X-band system

Absolute phase and amplitude control of the X-Band system is not as demanding as was understood. The shot-to-shot (fast) jitter tolerances are fairly tight (0.5 deg-X and 0.25% amplitude, rms). This does not mean that the absolute X-band phase and amplitude need to be held at their design values to this level. The bunch length and energy feedback, described by Juhao Wu, will also compensate for X-band phase and amplitude changes of up to 10 degrees and 5%, as long as these variations occur slowly compared with 120 Hz. The compensation is implemented by Linac-1 S-band phase and amplitude corrections, but the net effect is to maintain a constant post-BC1 bunch length and beam energy. A “dither” feedback, suggested by the FAC, is therefore not as effective since it takes many pulses to dither the system, and variations on this time scale will already be compensated by the bunch length and energy feedback system. Perhaps a dither feedback can be implemented for very slow time scales of more than one minute, but the absolute regulation demands will then be quite loose (e.g., 2 degrees and 2%).

Page 19: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Response to October 2004 FAC 7 -Consider schemes to modulate X-band phase for optimal set-up -Place appropriate emphasis on challenging phase/amplitude control of X-band system

Absolute phase and amplitude control of the X-Band system is not as demanding as was understood. The shot-to-shot (fast) jitter tolerances are fairly tight (0.5 deg-X and 0.25% amplitude, rms). This does not mean that the absolute X-band phase and amplitude need to be held at their design values to this level. The bunch length and energy feedback, described by Juhao Wu, will also compensate for X-band phase and amplitude changes of up to 10 degrees and 5%, as long as these variations occur slowly compared with 120 Hz. The compensation is implemented by Linac-1 S-band phase and amplitude corrections, but the net effect is to maintain a constant post-BC1 bunch length and beam energy. A “dither” feedback, suggested by the FAC, is therefore not as effective since it takes many pulses to dither the system, and variations on this time scale will already be compensated by the bunch length and energy feedback system. Perhaps a dither feedback can be implemented for very slow time scales of more than one minute, but the absolute regulation demands will then be quite loose (e.g., 2 degrees and 2%).

Page 20: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Response to October 2004 FAC 8

-By 1/2005, force a decision on undulator design changes for AC wake field-

Resistive wall wakefield studies were performed (SLAC/ANL.) A low charge machine configuration now looks like a very attractive operating point where resistive-wall wakefields are not a problem. In addition, a semi-elliptical undulator vacuum chamber with aluminum coating reduces the wakes to an acceptable level even at the 1-nC charge level. No other large changes to the undulator design have been necessary to further mitigate the wakes.

Page 21: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Injector/Linac SummaryProgress Made On

Laser Purchase, Laser Study CollaborationsRF Gun & Structure DesignX-Band System Design & Klystron FabricationCollimator StudiesMechanical Design – Area Integration, ComponentsMagnet and Vacuum Procurement

Injector and Linac Design Staff IntegratedBCR to Modify Injector Manpower Loaded Schedule Incorporating Linac Down Schedule Changes, Better Cost-Performance TrackingAdded staff for magnet procurement and diagnostics design

Page 22: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

End

Page 23: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

LCLS Injector/Linac Organizational Chart

RF engineering, design and fabrication matrixed from Klystron Department

ILC engineering & design matrixed for dual feed structure design

Mechanical Design matrixed from SLAC Mechanical Design Department

Injector/Linac SystemsEric Bong: ManagerCarl Rago: Deputy

Leif ErikssonL1, L2, L3 BC1,

BC2 Integration, Vacuum

Tim MontagneLTU & E-Dump

Integration, Diagnostics

LCLS Injector/Linac Mechanical Engineering

Carl RagoMech. Data, RF

Distribution Magnets

Bob Dalesio LCLS Controls

Joe Stieber

Paul StephansJoe Franklin

Nick Braughton

Bill BrooksJim Stanfield

Ng Wing

SLAC Mechanical Design

Stanford ME Grad. RAAshish Mitra

Venkat Srinivasan

Dave SchultzRF Systems

Klystron Department

Klystron Department EngineersDesigners

Fabrication

Injector/Linac Systems Physicists

Paul Emma: LinacC. Limborg: Injector

Sasha GilevichInjector Laser

Alan Miahnahri

Richard F. BoyceInjector

Integration

Mike Palrang

Peter McIntoshLinac RF

Alan HillInjector RF

RF Gun

Richard M. BoyceLCLS Installation

Manager

LCLS Physics SupportDave Dowell

John SchmergePaul Bolton

Zhirong HuangJuhao Wu

Recent additions:

J Langton, Roger Carr

Page 24: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Injector Launch Feedback Model

Ron Akre, D. Kotturi

Page 25: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Injector L0 Feedback Model

Ron Akre, D. Kotturi

Page 26: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

feedback offfeedback offfeedback offfeedback off feedback on (Integral gain:0.5)feedback on (Integral gain:0.5)feedback on (Integral gain:0.5)feedback on (Integral gain:0.5)

% 09.0/

%; 0007.0/

std

EE

EE % 09.0/

%; 0007.0/

std

EE

EE

%5.8/

%;10.0/

std

II

II %5.8/

%;10.0/

std

II

II

ps

ps

std 15.0

;003.0

t

t ps

ps

std 15.0

;003.0

t

t

Juhao Wu (SLAC)Juhao Wu (SLAC)

LCLS Longitudinal Feedback SimulationDetails in Breakout J. Wu

LCLS Longitudinal Feedback SimulationDetails in Breakout J. Wu

Page 27: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Injector Wall Region Design

Beamline segment piercing Injector vault shielding wall.

Includes valves, quadrupoles, OTRs, wire scanners, BPMs, pumps, gages, support stands, vacuum chambers.

Beamline layout assembled into wall assembly model.

Design effort broken into diagnostics, magnets, vacuum and integration.

Quadrupole order April 1, 2005

OTR body ready for vendor bid.

Wire scanner in design evaluation.

Installation scheduled October 2005

Page 28: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Injector Heater Region Design

Beamline segment Between Accelerators and Shielding Wall

Includes laser heater, transverse structure, dipoles, quads, correctors otrs.

Installation scheduled January 2006

Page 29: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Injector Waveguide Design

Waveguide network feeds gun, Structures L0a & L0b, and T-Cav

Gun and structures fed from Li-20-6, 7 & 8 klystrons, T-Cav fed from Li-20-5d structure exhaust.

3-D Layout integrated into Injector system assembly

Design effort broken into penetration-wall runs, Gallery and Vault runs.

Installation penetration-wall October ’05

Installation Vault & Gallery Spring ’06

Page 30: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

L1 Region DesignBeamline segment in Sector 21 Between Injector insertion and X-Band structure.

Includes two shortened accelerator structures, quads, correctors and Bethe hole couplers.

3-D Layout integrated into Linac Girder model.

Design complete. Drawings complete except couplers.

Fabrication could begin April 2005

Installation-early October ‘05

Page 31: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

BC1 Region DesignBeamline segment in Sector 21 From X-Band system, through compressor to emittance diagnostics section.

Includes articulated compressor, inter-bend diagnostics, emittance wire scanners, OTRs, quadrupoles and vacuum components.

3-D Layout integrated into Linac Girder model.

Design effort broken into chicane articulation, diagnostics, magnets, vacuum and integration.

Fabrication and testing of articulation could begin April 2005

Installation – August 2006

Page 32: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

X-Band System Design

XL4 Klystron in fabSelected NLC waveguide components designed for 8-Pack

60cm structure from FermiX-Band Layout Integrated into beamline layout

Page 33: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Linac L2, BC2, L3 Mechanical Design

System schematics complete

3-D models of area backgrounds complete

File management structure for 3-D models complete

L2 and L3 modification ready to begin

BC2 design scheduled for FY06

Page 34: Eric Bong LCLS FAC Injector-Linac UpdateBONG@slac.stanford.edu April 7, 2005 LCLS Injector/Linac Systems Update E. Bong LCLS FAC April 7, 2005 LCLS

Eric BongLCLS FAC Injector-Linac Update [email protected] 7, 2005

Main Dump and Safety Dump

Main dump electromagnets allow energy and energy spread measurementsSafety dump permanent magnets deflect e-beam on BYD failureRay traces show no beam transported through wall in any failure conditionWorking with SLAC Radiation Safety for approval of design