Atomic, Molecular and Optical Science at the LCLS






Proposal Preparation Workshop:

A workshop will be held June 2 & 3 at SLAC to assist users in preparing proposals to use the AMO instrument at the LCLS in anticipation of the first call for proposals due September 2008.  The LCLS will begin user operations with the AMO instrument in August 2009. Information about the LCLS and the AMO instrument will be presented at the proposal preparation workshop to help users prepare successful proposals.  The information will be made available on the LCLS-AMO web site after the meeting.  Please see the workshop announcement for more information.

LCLS Scientific Instruments:

Four scientific instruments are currently being designed to capitalize on the unique properties of the LCLS, namely its high intensity short pulses x-rays.  The Atomic, Molecular and Optical (AMO) science instrument will occupy a soft x-ray side branch of the LCLS in hutch 2 of the Near Experimental Hall (NEH).  The AMO instrument is being built as a part of the LCLS construction project, while the other three instruments for x-ray pump probe(XPP), coherent x-ray imaging (CXI), and x-ray coherent scattering (XCS) are being built as part of a separate SLAC managed DOE project, the LCLS User Scientific Instruments project, LUSI.

AMO Instrument:

The AMO instrument is being designed to utilize soft x-rays from the LCLS in the photon energy range over approximately 800-2000 eV.  The instrumentation is designed to study the interaction of the LCLS FEL radiation with the simplest forms of matter, atoms, molecules and clusters.  Two fundamental types of interaction are of unique interest at the LCLS: multiphoton and high field ionization where the high peak intensity of the LCLS provides access to unique processes; and short duration processes, where the high temporal resolution of the LCLS pulse will allow temporal processes to be studied.

design includes:

  • focusing mirrors to achieve a beam size of a few microns in the interaction region
  • an experimental chamber with:
    • a skimmed pulsed supersonic gas jet
    • three ion spectrometers:
      • a Wiley-McLaren type integrating ion spectrometer
      • a Velocity Map Imaging ion spectrometer
      • a momentum resolving ion spectrometer
    • five time-of-flight electron energy spectrometers
    • two x-ray fluorescence spectrometers
  • Diagnostics chamber including:
    • effusive gas jet source
    • magnetic bottle time-of-flight electron spectrometer
    • fluorescent beam screens to record position of beam
    • pulse energy monitor
for further information contact John Bozek at (650) 926-5091 or jdbozek at slac (email address linked)