John D. Bozek AMO Commissioning & Nov , 2008 SLAC National Accelerator Laboratory AMO Installation & Commissioning Plan John Bozek, LCLS Location Change Scientific Motivation Design & status Next Steps: Procurement/fabricationAssemblyTestingLaserControls Comissioning plan 1

John D. Bozek AMO Commissioning & Nov , 2008 SLAC National Accelerator Laboratory The AMO Instrument 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 2

John D. Bozek AMO Commissioning & Nov , 2008 SLAC National Accelerator Laboratory Location of AMO experiment was changed… 3 AMO on soft x-ray branch eV

John D. Bozek AMO Commissioning & Nov , 2008 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 4

John D. Bozek AMO Commissioning & Nov , 2008 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 5

John D. Bozek AMO Commissioning & Nov , 2008 SLAC National Accelerator Laboratory AMO Instrument Design – focusing optics Peak intensity depends on size of beam focus – accessible physics depends on intensity FocusW/cm 2 1mm7× μm7× μm7× μm7× nm7× Interaction region ~140m from source 825 eV  m 825eV  rad Unfocussed beam diameter ~1.1mm Focusing optics ~1m from interaction region

John D. Bozek AMO Commissioning & Nov , 2008 SLAC National Accelerator Laboratory Experimental station – Pulsed Gas Jet 7 Gas jet chamber X ray beam Turbo pump Skimmer Interaction region

John D. Bozek AMO Commissioning & Nov , 2008 SLAC National Accelerator Laboratory High Field Physics – Ion Spectrometers 8 Ion Time of Flight Ion imaging spectrometer Momentum resolving Ion spectrometer

John D. Bozek AMO Commissioning & Nov , 2008 SLAC National Accelerator Laboratory Experimentation station - ETOF 9 Detector Electrical lens Magnetic shielding Actuators

John D. Bozek AMO Commissioning & Nov , 2008 SLAC National Accelerator Laboratory High Field Physics – eTOF Five electron spectrometers arrayed around interaction region 10

John D. Bozek AMO Commissioning & Nov , 2008 SLAC National Accelerator Laboratory 11 Positioning stand Gas jet chamber ETOFs Ion TOF Experimental chamber X-ray beam HFP station functions 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 beam focal point Support diverse diagnostics High field physics station

John D. Bozek AMO Commissioning & Nov , 2008 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 12

John D. Bozek AMO Commissioning & Nov , 2008 SLAC National Accelerator Laboratory Diagnostics – Magnetic Bottle Single shot electron energy spectrum – measure photon energy and bandwidth 13 Design courtesy of Chris Roedig (Lou DiMauro’s group at OSU).

John D. Bozek AMO Commissioning & Nov , 2008 SLAC National Accelerator Laboratory 14 Diagnostics station X ray beam Positioning stand Gas jet chamber Diagnostic chamber 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

John D. Bozek AMO Commissioning & Nov , 2008 SLAC National Accelerator Laboratory NEH Laser 15 Experiment Chambers Optical Transport Harmonics Pulse Compressor (Single Grating) Optical Transport Pulse Cleaner Regenerative Amplifier 1kHz, <5 mJ 30W Nd:YLF Pump 527nm 1.2 kHz 30 fs Mode Locked 800 nm 5 W Nd:YVO 4 Pulse Stretcher 30 fs Bandwidth Laser Hall Hutch 1 DIAGNOSTIC SUITE -Spectrometer -Autocorrelator -Frog -Beam Analyzer -Power Meters -Oscilloscopes

John D. Bozek AMO Commissioning & Nov , 2008 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 16

John D. Bozek AMO Commissioning & Nov , 2008 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 17

John D. Bozek AMO Commissioning & Nov , 2008 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 18

John D. Bozek AMO Commissioning & Nov , 2008 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 19

John D. Bozek AMO Commissioning & Nov , 2008 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 20

John D. Bozek AMO Commissioning & Nov , 2008 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 21

John D. Bozek AMO Commissioning & Nov , 2008 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 22

John D. Bozek AMO Commissioning & Nov , 2008 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 23

John D. Bozek AMO Commissioning & Nov , 2008 SLAC National Accelerator Laboratory 24 Ne charge state vs Intensity Rohringer & Santra, PRA 76, (2007)

John D. Bozek AMO Commissioning & Nov , 2008 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 ! 25

John D. Bozek AMO Commissioning & Nov , 2008 SLAC National Accelerator Laboratory 26 Outcome of 1 st 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. Australia4Ireland1 China2Italy8 Czech Republic4Japan6 Denmark1Netherlands4 Finland1Poland3 France 1 Sweden 26 Germany70United Kingdom1 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).

John D. Bozek AMO Commissioning & Nov , 2008 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) 27

John D. Bozek AMO Commissioning & Nov , 2008 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 28