Electron Beam Systems
ETC and Methodology
David Schultz
E-Beams Systems Manager
Electron Beam Systems
Definition of terms
Schedule Overview
Start-Up Test Plan
E-Beams Costs
Risk Analysis
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E-Beams Systems layout
Sector 21
Sector 20
Laser
lab
BC1
L1
Injector
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LX
Injector Commissioning complete
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Laser
beam
transport
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The electron gun in the Injector
Electron
gun
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E-Beams Systems layout
6 MeV
Linac-1
L 9 m
...existing
linac
Linac-2
L 330 m
13.6 GeV
Linac-3
L 550 m
X
BC2
L 22 m
BC1
L 6 m
Injector/BC1
L2/BC2/L3
SLAC linac tunnel
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4.30 GeV
Linac-X
L =0.6 m
Linac-0
L =6 m
rf
gun
250 MeV
135 MeV
4
undulator
L =130 m
LTU
L =275 m
research yard
E-Beams Systems layout
Beam Transport Hall
Transport the electron
beam to the Undulator
Undulator Hall
Underground tunnel
housing the undulator.
Controls
Beamline and diagnostics
control for e-beams systems.
SLAC Linac
LCLS uses
the last 1/3 of
the existing
Linac.
Electron Beam Dump
Underground facility for
the beam dump.
Near and Far Halls – Areas for xray experiments
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E-Beams Systems WBS structure
Injector
WBS 1.02, 2.02
Jose Chan, Control Account Manager
Laser/Gun/L0/Spectrometer
– Installed and commissioned
Create electrons, accelerate, analyze
beam quality
Laser Heater
Accelerator R&D activity
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E-Beams Systems WBS structure
Linac
WBS 1.03, 2.03
Jose Chan, CAM
L1/Lx/BC1 – Installed and commissioned
Accelerate the beam,
initial beam bunch compression
L2/BC2/L3
Full beam acceleration,
second compression of bunch
LTU
Transport electron beam from Linac to Undulator
Electron dump
Safely dispose of the electron beam
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E-Beams Systems WBS structure
Undulator WBS 1.04, 2.04
Generate x-rays as the high power electron beam passes
through.
Undulator Systems at ANL, Geoff Pile, CAM
Fabricate components and supports for the Undulator
system
Undulator Integration at SLAC, Rodd Pope, CAM
Tune, fiducialize, assemble, and install the Undulator system
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E-Beams Systems WBS structure
Accelerator Controls WBS 1.02.02, 2.02.02,
1.03.02, 2.03.02, 1.04.02, 2.04.02
Hamid Shoaee, CAM
Controlling hardware, cable plant and
software for Injector, Linac and Undulator
Systems
Commissioning WBS 2.01.01, 2.02.17,
2.03.07, 2.04.06
David Schultz, CAM
LOE manpower for LCLS personnel and
maintenance groups during the electron beam
commissioning process.
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System Design Management
System engineering resource loaded schedule is
controlled through P3.
Design process:
Interface Control Documents specify which group has
responsibility for each system.
Physics Requirements Documents are written by the
LCLS Physics group specifying subsystem needs.
Engineering group holds Design Reviews, and writes
Engineering Specification Documents to detail how
the PRD is to be satisfied.
Physicists and Engineers sign-off on component
assembly and testing prior to installation.
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E-Beams Systems Level 3 Milestones
L3 milestones sufficient and properly distributed to monitor performance.
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E-Beams Systems Level 3 Milestones
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LCLS Installation and Commissioning Time-Line
X-ray tunnel/FEH Install
LTU/Und/Dump
Install
Flux
milestone
CF Early
Occupancy
FEH X-rays
milestone
CD-4
FEE/NEH Install
(7/30/10)
PPS
PPS
S OND J FMAM J J A S OND J FMAM J J A SOND J FMAM
2007
2008
2009
2010
Linac/BC2
Install
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Linac/BC2
Commissioning
LTU/Und
Commissioning
Tunnel/FEH
Commissioning
FEE/NEH
Commissioning
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Start Up Test Planning
LCLS Safety Assessment Document is due 7/2008
LCLS Accelerator Readiness Review is needed 10/2008
Systems installed, checked out, signed off by responsible parties.
Safety officers’ signoffs on approvals and installations.
Safety specific systems (Personnel Protection) certified.
Maintenance groups have procedures and training in place.
Procedures in place for Operations, and Operators trained.
Beam Authorization Sheet prepared.
Detailed commissioning schedule and performance goals are
produced by the LCLS Physics group.
Approval to begin commissioning given by the Director’s office
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E-Beams Systems Cost Estimation
As installation is approaching, systems are well defined.
Installation costs
Based on experience in 2006 Injector installation.
Hardware install estimate done top-down and bottom-up.
Based on experience on undulator prototype at ANL.
Cable plant install estimated using R.S. Means.
Fabrication/procurement
Costs based on quotes and experience with
prototypes at SLAC and ANL.
Engineering and Commissioning
Timetable for completion well understood.
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Risk Assessment
Design maturity and cost/schedule exposure are used
in the contingency analysis for all DCE activities.
Major risks are identified as Risk Registry entries, and
assessed and maintained by the System Manager.
The Senior Management team reviews the Registry
monthly.
Summary of E-Beams Systems entries:
Linac (2)
Risk: Linac diagnostics may need to be enhanced to
have sufficient sensitivity for FEL commissioning.
Mitigation: The upcoming BC2 commissioning will
determine if an upgrade is warranted.
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Risk registry
Summary of entries (cont.):
Undulator (3)
The assembly of the Undulator Girders is a pacing
item for Undulator commissioning.
Several components from ANL are close to being
the limiting factor
Risk: Any rework or modification of parts at SLAC will
delay girder assembly.
Mitigation: We have multiple weekly video meetings
with ANL and quarterly Undulator collaboration
meetings to ensure coordination.
Integration engineers at ANL and at SLAC have been
established to coordinate the receipt and assembly.
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Summary
Electron Beams Systems are approaching final
installation.
Systems are well defined,
Based on Project documentation.
Resource loaded schedule in P3.
Costs have a solid basis.
The start up test plan is based on the successful
turn-on of the LCLS Injector.
Identified risks are being controlled.
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