Transcript AMO: Installation & Commissioning Plan

SLAC National Accelerator Laboratory
AMO Installation & Commissioning Plan
John Bozek, LCLS
Location Change
Scientific Motivation
Design & status
Next Steps:
Procurement/fabrication
Assembly
Testing
Laser
Controls
plan
Nov. Comissioning
11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
The AMO Instrument
SLAC National Accelerator Laboratory
Represents work of many people:
Team leaders: Lou DiMauro, Nora Berrah, Linda
Young, Phil Bucksbaum
Engineering: Jean Charles Castagna, Michael
Holmes, Michael Kosovsky, Nadine Kurita
Controls: Gunther Haller, Amedeo Perazzo, Dave
Nelson, Christopher O’Grady,…
Laser: Greg Hayes, Bill White
LCLS Management: Stefan Moeller, John Arthur
With apologies to whomever I’ve forgotten
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
Location of AMO experiment was changed…
AMO on soft x-ray branch 800-2000 eV
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
Scientific Goals of the AMO instrumentation
Investigate multiphoton and high-field x-ray
processes in atoms, molecules and clusters
Multi-photon ionization/excitation in
atoms/molecules/clusters
Accessible intensity on verge of high-field regime
Study time-resolved phenomena in atoms,
molecules and clusters using ultrafast x-rays
Inner-shell side band experiments
Photoionization of aligned molecules
Temporal evolution of state-prepared systems
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
AMO Instrument Components
Optics
High Field Physics Chamber
Gas jet
Electron TOFs
Ion spectrometers
X-ray spectrometers
Chamber, shielding, pumping, shutter, etc
Diagnostics Chamber
Magnetic bottle electron spectrometer
Beam screens
Pulse energy monitor
Pulse picker
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
AMO Instrument Design – focusing optics
Peak intensity depends on size of beam focus – accessible
physics depends on intensity
Focus
Interaction region ~140m from
source
Source @ 825 eV - 116mm
Divergence @ 825eV - 5.7mrad
Unfocussed beam diameter
~1.1mm
Focusing optics ~1m from
interaction region
Nov. 11-13, 2008
AMO Commissioning & Installation
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W/cm2
1mm
7×1012
100μm
7×1014
10 μm
7×1016
1 μm
7×1018
100nm
7×1020
John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
Experimental station – Pulsed Gas Jet
Skimmer
Gas jet chamber
X ray beam
Turbo pump
Nov. 11-13, 2008
AMO Commissioning & Installation
Interaction region
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
High Field Physics – Ion Spectrometers
Ion Time of Flight
Momentum resolving
Ion spectrometer
Nov. 11-13, 2008
AMO Commissioning & Installation
Ion imaging
spectrometer
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
Experimentation station - ETOF
Magnetic shielding
Detector
Electrical lens
Actuators
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
High Field Physics – eTOF
Five electron spectrometers arrayed around interaction
region
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
High field physics station
HFP station functions Gas jet chamber
Experimental
chamber
Provide UHV environment
for experiment
Support 5x ETOF
spectrometers
Support Ion TOF
Support pulsed gas
injector
Analyze beam focus
footprint
Provide magnetic field free
environment
Position the IR at the
X-ray beam
beam focal point
Support diverse
Positioning
diagnostics
stand
Nov. 11-13, 2008
AMO Commissioning & Installation
ETOFs
Ion TOF
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
AMO Instrument - Diagnostics
Diagnostics in a separate chamber with:
Magnetic bottle spectrometer
Measures photon wavelength and bandwidth
Can also be used to measure temporal overlap of
FEL & laser beam
Pulse energy monitor
Measures pulse energy on each pulse
Copy of the XTOD gas monitor
Two beam screens
Measures position & size of beam
Either geometric or coherent interference based
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
Diagnostics – Magnetic Bottle
Single shot electron energy spectrum – measure photon
energy and bandwidth
Design courtesy of Chris
Roedig (Lou DiMauro’s
group at OSU).
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
Diagnostics station
Diagnostic station
functions
Provide UHV
environment for
experiment
Support magnetic bottle
spectrometers and
magnet positioner
Support gas injector
Support diverse
diagnostics
Position the IR in the
beam path
X ray beam
Diagnostic
chamber
Gas jet chamber
Positioning stand
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
5 W Nd:YVO4
30 fs Mode
Locked Ti:sapp @
800 nm
NEH Laser
Pulse Stretcher
30 fs Bandwidth
DIAGNOSTIC SUITE
30W Nd:YLF Pump
Laser @ 527nm 1.2 kHz
Regenerative Amplifier
1kHz, <5 mJ
-Spectrometer
-Autocorrelator
-Frog
Pulse
Cleaner
Laser Hall
Optical
Transport
Hutch 1
Optical
Transport
Pulse Compressor
(Single Grating)
Nov. 11-13, 2008
AMO Commissioning & Installation
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-Beam Analyzer
-Power Meters
-Oscilloscopes
Harmonics
Optical
Transport
Experiment
Chambers
John
D. Bozek
[email protected]
SLAC National Accelerator Laboratory
Fabrication & Assembly
Installation manager hired to oversee
procurement & fabrication phase
Adapting tools used in the fabrication &
installation of electron beam components
Working with SLAC Mechanical Fabrication
Department to fabricate and assemble
instrumentation
Space in one of their vacuum shops for
assembly
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
Commissioning Plan
Begin off-line testing of controls once
hardware is in place
table movements when stands assembled – Jan
2009
Vacuum controls when vacuum system
assembled – Feb 2009
Test stands of data acquisition hardware built in
G. Haller’s labs
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
Commissioning Plan
Instrumentation to be commissioned off-line
as it becomes available:
Gas jet testing
Movement of nozzle
Timing of valve opening
Pressure controls
Safety and shutdown procedures
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
Installation in Hutch 1
Each chamber to be moved into hutch fully
assembled on stand – May 2008
Locate and mount to floor
Connect utilities
Water, power, exhaust
Cable trays moved in simultaneously and
equipment loaded into permanent racks
connect & begin powering up systems with off-line
check-out
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
Commissioning Plan
Assembled instrumentation installed in
Hutch in May
Possible to use NEH laser to generate ions &
electrons in the spectrometers
Start with ion spectrometer
Sync laser to gas jet
Measure ion charge state as fcn of laser intensity
Extend commissioning to electron spectrometers
& diagnostics in hutch
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
Installation/Commissioning of Optics
Optics are being built as a stand-alone
package at LBNL (N. Kelez)
Optical substrates recently ordered with 5 mo
delivery time
Coated with B4C at LLNL (R. Soufli)
Metrology of bender and repeatability at LBNL
using LTP
Delivered with vacuum system & stand
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
Commissioning Plan
First FEL light in June/July 2008
Carefully illuminate & align components with
spontaneous or attenuated FEL radiation
Ensure operation of instrumentation without
focused light
Ion TOF
Electron TOF’s
Magnetic bottle
Pulse energy monitor
Beam screens
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
Commissioning Plan
Once instrumentation is operating, start
using focusing optics
Focal properties of elliptical optics very sensitive
to alignment
Non-destructive feedback mechanism required
Start with imprinting beam into a PMMA film
In-vacuum movement of paddle to a microscope with
3um resolution
Eventually use ion charge state distribution as
measure
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
Ne charge state vs Intensity
Rohringer & Santra, PRA 76,
033416 (2007)
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
Installation & Comissioning
Jan - May 2009 – Assembly in vac shop
Feb - May 2009 – offline testing of controls
May 2009 – install into hutch
June 2009 – laser based comissioning
July 2009 – FEL commissioning
August 2009 – Ready for initial User
Operations !
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
Outcome of 1st LCLS call for proposals
“Experiments at the AMO beamline”
28 proposals were received – 19 in the field of AMO, 6 for imaging experiments, and 1 for
diagnostics, detector and damage studies, respectively.
All together 219 scientists are involved in these proposals, many of them in more than
one.
Australia
4
Ireland
1
China
2
Italy
8
Czech Republic
4
Japan
6
Denmark
1
Netherlands
4
Finland
1
Poland
3
France
1
Sweden
26
Germany
70
United Kingdom
1
India
4
United States
83
In any case, after submission of the proposals LCLS management will seek additional input
from the instrument scientists regarding experiment feasibility and from the LCLS safety
officer. The whole dossier is then forwarded to the Proposal Review Panel (PRP) .
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
Risks to success AMO Experiments
Late delivery of optics
Mirrors on order with 4-6mo delivery (Zeiss)
Struggling to get MOU in place with LBNL
Started process in May 2008
Lack of experience with gas jet
Ideally have operational experience to develop
knowledge of available operating parameters
Need to determine which parts to have on hand as
spares in case of failure (limited by delivery time etc)
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]
SLAC National Accelerator Laboratory
Risks to success AMO Experiments
Schedule pressure
Only one experiment operational in first run
Need to schedule down time to modify/repair
Require some flexibility to accommodate
changes required by users for different
experiments
Also require support – mechanical engineering,
controls, data acquisition – to incorporate user
supplied hardware
Nov. 11-13, 2008
AMO Commissioning & Installation
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John D. Bozek
[email protected]