The SXR Instrument The SXR is a instrument

The SXR Instrument The SXR is a instrument for Soft X-ray Materials Research on the LCLS q SXR has revised an old concept at the LCLS q SXR is compatible with multiple techniques for studying materials with ultra short soft x-rays pulses • SXR spans both hutches 1 & 2 with the end station in Hutch 2 Michael Rowen Project Manager October 20, 2008 LCLS SAC Meeting Michael Rowen rowen@slac. stanford. edu

Scientific Drivers for SXR Pump-Probe Ultrafast Chemistry Magnetic Imaging X-Ray Scattering Spectroscopy on Strongly Correlated Materials Ultrafast Coherent Imaging October 20, 2008 LCLS SAC Meeting Michael Rowen rowen@slac. stanford. edu

Science Dissociation ~ 1Å / 100 fs. Charge, spin and orbital order Solution based ultrafast chemistry Pump-probe Ultrafast Surface Chemistry Magnetic Imaging October 20, 2008 LCLS SAC Meeting Michael Rowen rowen@slac. stanford. edu

Science Driven Requirements Soft X-ray Beam Line, 500*-2000 e. V: Monochromatic, E/DE of ~5000 Focused or unfocused beam at end station Switch between monochromatic and “white” beam without moving experimental system Open end station for interchangeable user systems Capabilities for fast, single shot, transmission spectroscopy * Running LCLS will be at photon energies >825 e. V in the near term. October 20, 2008 LCLS SAC Meeting Michael Rowen rowen@slac. stanford. edu

SXR Beam Line • • Monochromator Exit slit Focusing Optics Transmission sample chamber (up stream of mono) Spectrometer detector (insertable, at exit slit) No fixed end station PPS & MPS Beam Line controls SXR compliments the AMO experiment October 20, 2008 LCLS SAC Meeting Michael Rowen rowen@slac. stanford. edu

SXR Layout October 20, 2008 LCLS SAC Meeting Michael Rowen rowen@slac. stanford. edu

Grating Monochromator Varied Line Spacing (VLS) grating monochromator: 2 optical elements (vertical): spherical mirror, VLS plane grating 1 rotation of grating Erect focal plane for spectrometer mode and fixed slit position. B 4 C coated optics Courtesy Phil Heimann October 20, 2008 LCLS SAC Meeting Michael Rowen rowen@slac. stanford. edu

Monochromator Layout Grating System & Exit Slit • mono spans 1 st and second hutch October 20, 2008 LCLS SAC Meeting Michael Rowen rowen@slac. stanford. edu

Pulse duration preservation Pulse stretching: N m l = 40 fs at 826 e. V: Dispersive measurements and white beam LCLS pulse duration is unaffected. An aperture will reduce pulse stretching with a decreased intensity and energy resolution. Courtesy Phil Heimann October 20, 2008 LCLS SAC Meeting Michael Rowen rowen@slac. stanford. edu

Focusing Optics K-B Optics: • • Silicon Substrates B 4 C coatings Profiled mirrors bent to elliptical cylinders Focus <10 x 10 mm October 20, 2008 LCLS SAC Meeting Michael Rowen rowen@slac. stanford. edu

K-B Refocusing Mirrors K-B Mirrors Focus to <10 x 10 mm or Unfocused October 20, 2008 LCLS SAC Meeting Michael Rowen rowen@slac. stanford. edu

Use ALS beamline mechanical designs ALS “standard” monochromator: 0. 1 mrad motion of pre-mirror and grating, Horizontal translation of chamber. ALS bendable mirror: Motorized leaf springs, Flange mounted. Plan to use existing mechanical designs with minimal modifications in the LCLS SXR Instrument. October 20, 2008 LCLS SAC Meeting Michael Rowen rowen@slac. stanford. edu

Endstations 8 Endstations described in the TDR document Stöhr Nilsson October 20, 2008 LCLS SAC Meeting Chapman Hussein-Shen Michael Rowen rowen@slac. stanford. edu

Spectrometer Mode Transmission Sample Location Spectrometer Detector at Exit Slit • w/ Pump Laser October 20, 2008 LCLS SAC Meeting Michael Rowen rowen@slac. stanford. edu

Institutional Roles Institution Support level (k$) Role Initial support for conceptual design (TDR) Purchase long lead optical components Engineering and design 750 LBNL X-ray optical design and on going technical support Engineering and design of X-ray optical systems 380 DESY Provides hardware and support for assembly Technical expertise FEL instrumentation 1500 CFEL Provides hardware and support for assembly 300 LCLS Provides overall management structure, pays for installation and integration, will manage operations Stanford Total estimated cost: October 20, 2008 LCLS SAC Meeting 1500 $4435 k Michael Rowen rowen@slac. stanford. edu

Status of Mo. U • The Mo. U between SLAC and DESY has been signed by DESY and approved at SLAC. Awaiting Directors signature. • The addendum defining contributions and roles of the members of the consortium is in final draft and should be completed by Monday October 20 th. October 20, 2008 LCLS SAC Meeting Michael Rowen rowen@slac. stanford. edu

SXR Status • The SXR scientific case has been reviewed by SAC. • Technical Design Report (TDR) has been written and accepted. • LCLS has reviewed the project for compatibility. • The X-ray optical design has been reviewed. • The Mo. U is close to being signed. • Integration of SXR into the LCLS construction project has started. • Long lead optical components are out to bid October 20, 2008 LCLS SAC Meeting Michael Rowen rowen@slac. stanford. edu

SXR Schedule SXR has not been integrated into the LCLS schedule. These completion dates are the earliest possible dates and independent of the LCLS running schedule. Expected final installations are in December ’ 09. October 20, 2008 LCLS SAC Meeting Michael Rowen rowen@slac. stanford. edu

Operations LCLS has put a stringent constraint on operations of the SXR experiment. There must be access to Hutch 1, AMO, when there is beam in the SXR line. Though on day one of SXR operations there will not be access to Hutch 1, SXR is working with Radiation Physics on defining and building in the necessary shielding and controls for access soon after SXR operations start. Operations with samples in the transmission chamber for spectrograph mode will take longer to be approved. October 20, 2008 LCLS SAC Meeting Michael Rowen rowen@slac. stanford. edu

Optical layout and table October 20, 2008 LCLS SAC Meeting Michael Rowen rowen@slac. stanford. edu

SXR Functional Diagram October 20, 2008 LCLS SAC Meeting Michael Rowen rowen@slac. stanford. edu