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John Arthur Photon Systems Overview [email protected] .edu April 7, 2005 Photon Systems Overview John Arthur
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John Arthur
Photon Systems Overview [email protected]
April 7, 2005
Photon Systems OverviewJohn Arthur
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
LCLS Photon Systems
Includes LCLS x-ray and laser groups
X-ray Transport, Optics and Diagnostics (XTOD)managed by LLNL (Richard Bionta)
X-ray Endstation Systems (XES)managed by SLAC (Stefan Moeller)
LCLS Laser Systemsmanaged by SLAC (TBD)
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
Recent Developments affecting all X-ray Systems (and Conv. Facilities)
Suggested Plan for Offset Mirrors in Front End
Suggested Redesign of Far Experimental Hall
These ideas are in the development stage, not yet officialBut they look very promising
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
24mm offsetSiC 1.5mrad
SiC 1.5mrad
Offset mirrors in the FEE
FEL radiation reflected (>95%)
Background from high harmonics and Bremsstrahlung not reflected
Upstream of all LCLS experiments
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
15m 11.6m
GAS ATTENSOLID ATTEN
STOP COLLIM
Mirrors
STOP
Proposed new layout of FEE
4 ft Fe 3 ft concrete 4 ft Fe
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
Advantages of Offset Mirrors
Keep high-energy radiation out of experimentsEliminate troublesome backgroundNote: nearly all synchrotron beamlines use some offset
Keep high-energy radiation farther away from experimenters
Reduce shielding requirements, make hutches more easily accessible
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
Redesign of FEH
FEL beams
Experimental hutches(7x8m)
TOO SMALL
Office and shop space(Vac., Mech.,Electr.)
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
8x10 m10x10 m8x10 m
Possible new FEH layout
Wider main tunnel
Reduced corridor space
Large hutches
Slightly higher cost
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
XTOD Scope
Transport the x-ray beam, in vacuum, to all the experimental stations
Condition the x-ray beam, with attenuators and apertures
Analyze the x-ray beam, with sophisticated diagnostics
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
XTOD Optics
Gas Attenuator
SolidAttenuator
ElectronBeam
PhotonBeam
Front End Enclosure
NEH
Flipper Mirror
DiagnosticsDirect ImagersIndirect ImagerTotal Energy
Spectrometers
Main Elements
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
XTOD Staff-up complete for FY05R. Bionta
LLNL LCLS Project LeaderD. McMahon
XTOD Project Engineer
J. McNamaraAdmin.
M. EbersteinG. Otani
Procurement
Rodney VictorineResource Manager
Jolyn ScholesResource Analyst R. Beale
Hazards Control
EEE. Ables
MEP. DuffyM. MckernanS. ShenJ. Trent
CompK. FongS. LewisL. Ott
PhysicsS. FriedrichS. Hau-ReigeM. PivovaroffD. Ryutov
DNTR. London
UC DavisH. Baldis
Remainder of FY05 P3 labor "loosly" matrixed, i.e L. Li - thermal analysis, S. Bajt - multilayers, shops, finance…
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
XTOD work flow will follow ISMS practices for each WBS element
LCLS Physics Requirements
WBS Dictionary
Eng. Safety Notes
Certified Parts Lists
ICDs IWS (Integrated Work Sheet) is LLNL wide e-form for documenting ISMS for
each work package:Scope
HazardsControls
Roles (RI…) Responsibilities
TrainingSignoff
Designs
HardwareInstallationOperationsServicing
ERDs
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
Status of Selected XTOD Instrumentation
WBS Title Need Status FY05 Plans
1.5.5.3.2 Indirect Imager Comiss Concept Simulation, R&D
1.5.5.4.2 Total E measurement
Comiss Concept Proto & Sim
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
Wide Field of View Direct Imager
Fluence
X, mm6040200-20-40-60
Y, mm
20151050
-5-10-15-20
Horizontal LineOut
X, mm6050403020100-10-20-30-40-50
PhotoElectrons/Pixel
400,000
300,000
200,000
100,000
0
Photoelectrons
Optic
Camera
Scintillators
Concept
Calculation
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
Indirect Imager
1 m
101 mm
Final Position, Escaped
Final x, mm150100500-50-100
Final y, mm
150
100
50
0
-50
-100
0 5 101 .10 71 .10 61 .10 51 .10 41 .10 3
0.010.1
1
, Angle Deg
R
/ , 2 SiC W nm
Concept
Calculation
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
R&D on High-Fluence Damage to Optics
Experiment planned at TTF2 (DESY FEL) in early FY06
Expose various materials to GW-level soft x-ray pulses
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
Sample cassette
Experiment to test damage models at 40 eV
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
FY05 Goals
Mechanical and VacuumCost estimate and Engineering Plan through NEHIWS's, ICD's, and ERD's
Detailed plans / parts for prototype:Gas Attenuator, Control system tests, concepts for monitoring beam and attenuationTotal Energy, 1 pixelDirect Imager, for 826 eV tests at SSRL
Monte-Carlo simulations of FEE instruments Document in ERDs
Apertures, Expected light levels, Reflectivity, …
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
FY05 Goals (cont.)
Conceptual designs and sample optics forIndirect ImagerSpectrometer
ControlsCost estimate and Engineering PlanPrototype Controls
Gas AttenuatorDirect Imager
TTF Damage ExperimentSamples Fabricated and Documented
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
XTOD Summary
FY05 staffing plan implemented
FY05 work plan begun
Near term emphasis on Commissioning and FEE
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
XES Scope
The X-Ray Endstation Systems group provides the infrastructure required for experimenters to make best scientific use of the LCLS radiation safely
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
The Endstation Systems will provide:
Personnel protection systems (PPS) Protect people from x-rays, lasers, etc.
Network and computer support Cables, networks, servers, data storage
Prototype detectors a suite of x-ray detectors for experiments
Instrumentation for first Atomic Physics experimentsBeamline controls Synchronized laser system Optics, chambers, sample handling, etc.
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
Recent Progress
Solidification of scope of PIXEL project, clarification of XES instrumentation
New group leader: Stefan Moeller
Instituted user safety forumHow to build in a safe working environment for LCLS users
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
PIXEL and XESA ~$50M project called Photon Instrumentation for X-ray Experiments at LCLS (PIXEL) has been proposed
Will build 4 x-ray instruments for LCLS
Instrumentation needs are becoming much more clear
XES has decided not to build generic instrumentation but rather,
LCLS will dedicate all project effort for experimental instrumentation to one area of science: Soft X-ray Atomic Physics (AMO)
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
XES Status
Reworking schedules to focus on AMO
Preparing to staff up
Commencing 2-d x-ray detector development program
MOU in signing stage
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
XES Plan for FY05
Hire AMO scientist and detector scientist
Then hire controls engineer
Start detailed design of AMO and detectors
Commence 2-d detector project
No long-lead procurement
John Arthur
Photon Systems Overview [email protected]
April 7, 2005
XES Summary
Starting to staff up
Responding to improved understanding of LCLS experiments
Starting detector development program
Coordinating with XTOD, conv. facilties, and PIXEL
Coordinating with SLAC safety personnel regarding user safety
