Transcript Photon Systems Overview

Photon Systems Overview
John Arthur
April 7, 2005
Photon Systems Overview
John Arthur
[email protected]
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 Systems
managed by SLAC (TBD)
April 7, 2005
Photon Systems Overview
John Arthur
[email protected]
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 official
But they look very promising
April 7, 2005
Photon Systems Overview
John Arthur
[email protected]
Offset mirrors in the FEE
Upstream of all LCLS experiments
FEL radiation reflected (>95%)
SiC 1.5mrad
SiC 1.5mrad
24mm offset
Background from high harmonics
and Bremsstrahlung not reflected
April 7, 2005
Photon Systems Overview
John Arthur
[email protected]
Proposed new layout of FEE
4 ft Fe
3 ft concrete
4 ft Fe
Mirrors
GAS ATTEN
STOP
SOLID ATTEN
15m
April 7, 2005
Photon Systems Overview
COLLIM
11.6m
John Arthur
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STOP
Advantages of Offset Mirrors
Keep high-energy radiation out of experiments
Eliminate troublesome background
Note: nearly all synchrotron beamlines use some offset
Keep high-energy radiation farther away from
experimenters
Reduce shielding requirements, make hutches more
easily accessible
April 7, 2005
Photon Systems Overview
John Arthur
[email protected]
Redesign of FEH
Office and shop space
(Vac., Mech.,Electr.)
Experimental hutches
(7x8m)
TOO SMALL
FEL beams
April 7, 2005
Photon Systems Overview
John Arthur
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Possible new FEH
layout
Wider main tunnel
Reduced corridor space
Large hutches
Slightly higher cost
8x10 m
10x10 m
8x10 m
April 7, 2005
Photon Systems Overview
John Arthur
[email protected]
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
April 7, 2005
Photon Systems Overview
John Arthur
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XTOD Optics
Main Elements
NEH
Flipper Mirror
Front End Enclosure
Photon
Beam
Solid
Attenuator
Gas Attenuator
Diagnostics
Direct Imagers
Indirect Imager
Total Energy
Spectrometers
Electron
Beam
April 7, 2005
Photon Systems Overview
John Arthur
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XTOD Staff-up complete for FY05
Rodney Victorine
Resource Manager
Jolyn Scholes
Resource Analyst
EE
E. Ables
R. Bionta
LLNL LCLS Project Leader
D. McMahon
XTOD Project Engineer
ME
P. Duffy
M. Mckernan
S. Shen
J. Trent
R. Beale
Hazards Control
Comp
K. Fong
S. Lewis
L. Ott
Physics
S. Friedrich
S. Hau-Reige
M. Pivovaroff
D. Ryutov
J. McNamara
Admin.
M. Eberstein
G. Otani
Procurement
DNT
R. London
UC Davis
H. Baldis
Remainder of FY05 P3 labor "loosly" matrixed, i.e L. Li - thermal
analysis, S. Bajt - multilayers, shops, finance…
April 7, 2005
Photon Systems Overview
John Arthur
[email protected]
XTOD work flow will follow ISMS
practices for each WBS element
LCLS Physics
Requirements
WBS
Dictionary
ICDs
Hardware
Installation
Operations
Servicing
ERDs
Designs
Eng. Safety
Notes
April 7, 2005
Photon Systems Overview
IWS (Integrated Work
Sheet) is LLNL wide e-form
for documenting ISMS for
each work package:
Scope
Hazards
Controls
Roles (RI…)
Responsibilities
Training
Signoff
Certified Parts
Lists
John Arthur
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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
April 7, 2005
Photon Systems Overview
John Arthur
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Wide Field of View Direct Imager
Calculation
Photoelectrons
Concept
Horizontal LineOut
400,000
PhotoElectrons/Pixel
Optic
300,000
200,000
100,000
0
-50 -40 -30 -20 -10 0 10 20 30 40 50 60
X, mm
Camera
Y, mm
Fluence
Scintillators
April 7, 2005
Photon Systems Overview
20
15
10
5
0
-5
-10
-15
-20
-60
-40
-20
0
X, mm
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20
40
60
Indirect Imager
Concept
1m
101 mm
SiC/W, 2 nm
Final Position, Escaped
150
0.1
0.01
100
Final y, mm
1
1 10
4
1 10
R
3
1 10
6
1 10
7
1 10
50
0
Calculation
5
-50
-100
0
5
Angle, Deg
April 7, 2005
Photon Systems Overview
10
-100
-50
0
50
Final x, mm
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100
150
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
April 7, 2005
Photon Systems Overview
John Arthur
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Experiment to test damage models at 40 eV
Sample cassette
100mmx30mm
Shot size ~270µ Sq
7.5mm x 16mm x 1mm spacing
Scale = mm
April 7, 2005
Photon Systems Overview
John Arthur
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FY05 Goals
Mechanical and Vacuum
Cost estimate and Engineering Plan through NEH
IWS's, ICD's, and ERD's
Detailed plans / parts for prototype:
Gas Attenuator, Control system tests, concepts for
monitoring beam and attenuation
Total Energy, 1 pixel
Direct Imager, for 826 eV tests at SSRL
Monte-Carlo simulations of FEE instruments
Document in ERDs
Apertures, Expected light levels, Reflectivity, …
April 7, 2005
Photon Systems Overview
John Arthur
[email protected]
FY05 Goals (cont.)
Conceptual designs and sample optics for
Indirect Imager
Spectrometer
Controls
Cost estimate and Engineering Plan
Prototype Controls
Gas Attenuator
Direct Imager
TTF Damage Experiment
Samples Fabricated and Documented
April 7, 2005
Photon Systems Overview
John Arthur
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XTOD Summary
FY05 staffing plan implemented
FY05 work plan begun
Near term emphasis on Commissioning and FEE
April 7, 2005
Photon Systems Overview
John Arthur
[email protected]
XES Scope
The X-Ray Endstation Systems group provides the
infrastructure required for experimenters to make best
scientific use of the LCLS radiation safely
April 7, 2005
Photon Systems Overview
John Arthur
[email protected]
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 experiments
Beamline controls
Synchronized laser system
Optics, chambers, sample handling, etc.
April 7, 2005
Photon Systems Overview
John Arthur
[email protected]
Recent Progress
Solidification of scope of PIXEL project, clarification of XES
instrumentation
New group leader: Stefan Moeller
Instituted user safety forum
How to build in a safe working environment for LCLS
users
April 7, 2005
Photon Systems Overview
John Arthur
[email protected]
PIXEL and XES
A ~$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)
April 7, 2005
Photon Systems Overview
John Arthur
[email protected]
XES Status
Reworking schedules to focus on AMO
Preparing to staff up
Commencing 2-d x-ray detector development program
MOU in signing stage
April 7, 2005
Photon Systems Overview
John Arthur
[email protected]
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
April 7, 2005
Photon Systems Overview
John Arthur
[email protected]
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
April 7, 2005
Photon Systems Overview
John Arthur
[email protected]