The SXR Instrument The SXR is a instrument

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The SXR Instrument The SXR is a instrument for Soft X-ray Materials Research on

The SXR Instrument The SXR is a instrument for Soft X-ray Materials Research on the LCLS q SXR is the second soft x-ray instrument at the LCLS q SXR is compatible with multiple techniques for studying materials with ultra short soft x-rays pulses q SXR spans both hutches 1 & 2 with the end station in Hutch 2 q SXR compliments the AMO experiment Michael Rowen Project Engineer November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Scientific Drivers for SXR X-Ray Scattering Spectroscopy on Strongly Correlated Materials Pump-Probe Ultrafast Chemistry

Scientific Drivers for SXR X-Ray Scattering Spectroscopy on Strongly Correlated Materials Pump-Probe Ultrafast Chemistry Magnetic Imaging Ultrafast Coherent Imaging November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Science Driven Requirements Soft X-ray Beam Line, 500*-2000 e. V: Monochromatic, E/DE of ~5000

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 * LCLS operations will be at photon energies >825 e. V in the near term. November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

SXR Beam Line Major Components: Monochromator Exit slit Focusing Optics No fixed end station

SXR Beam Line Major Components: Monochromator Exit slit Focusing Optics No fixed end station Transmission sample chamber (up stream of mono) Spectrometer detector (insertable, at exit slit) November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

SXR Layout Basic AMO & SXR layout in hutches 1 & 2 November 12,

SXR Layout Basic AMO & SXR layout in hutches 1 & 2 November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Grating Monochromator Varied Line Spacing (VLS) grating monochromator: 2 optical elements (vertically deflecting): spherical

Grating Monochromator Varied Line Spacing (VLS) grating monochromator: 2 optical elements (vertically deflecting): spherical mirror, VLS plane grating Energy scan by rotation of grating Erect focal plane for spectrometer mode and fixed slit position. B 4 C coated optics Courtesy Phil Heimann November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Monochromator Layout M 1 Mirror & Grating Exit Slit Monochromator spans the first and

Monochromator Layout M 1 Mirror & Grating Exit Slit Monochromator spans the first and second hutches November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Resolution vs Energy 100 l/mm grating At 800 e. V DE = 0. 19

Resolution vs Energy 100 l/mm grating At 800 e. V DE = 0. 19 e. V 200 l/mm grating At 1200 e. V DE = 0. 23 e. V Resolution goal of 0. 2 e. V at 1000 e. V is achieved. November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Optical tolerances q. The figure tolerances are difficult because we need to preserve the

Optical tolerances q. The figure tolerances are difficult because we need to preserve the brightness of a source 100 mm in diameter and at a 100 m distance. q. That accuracy has been achieved by two venders for the LCLS SOMS and HOMS mirrors. November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Grating efficiency Grating Groove frequen depth cy (nm) (1/mm) Groove width (mm) 100 28

Grating efficiency Grating Groove frequen depth cy (nm) (1/mm) Groove width (mm) 100 28 7. 2 200 13 2. 95 Grating efficiency calculations with Gsolver by Phil Heimann. November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Fourier optics simulations q At the exit slit. q Assuming 2 nm rms figure

Fourier optics simulations q At the exit slit. q Assuming 2 nm rms figure error. From Jacek Krzywinski November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Fourier optics simulations (cont. ) X profile Y profile q At the focus in

Fourier optics simulations (cont. ) X profile Y profile q At the focus in end station. q Assuming 2 nm rms figure error. November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Behind the focus (10 cm) q When the focus of the KB mirrors are

Behind the focus (10 cm) q When the focus of the KB mirrors are not at the sample, there is more structure in the beam. q The peak intensity is still reduced, here by ~1/100. November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Pulse duration preservation Pulse stretching: N m l = 40 fs at 826 e.

Pulse duration preservation Pulse stretching: N m l = 40 fs at 826 e. V (i. e. at high dispersion) An adjustable aperture near grating can be used to reduce pulse stretching with a decreased intensity and energy resolution. For dispersive measurements and white beam, LCLS pulse duration is unaffected. November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Focusing Optics K-B Optics: Silicon Substrates q Profiled mirrors bent to elliptical cylinders q

Focusing Optics K-B Optics: Silicon Substrates q Profiled mirrors bent to elliptical cylinders q Focus to <10 x 10 mm q B 4 C coatings q Un-bend one or both mirrors for line or unfocused beam November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

K-B Refocusing Mirrors K-B Mirrors Focus End Station <10 x 10 mm November 12,

K-B Refocusing Mirrors K-B Mirrors Focus End Station <10 x 10 mm November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Use ALS beamline mechanical designs ALS “standard” monochromator: 0. 1 mrad motion of pre-mirror

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. November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Optical Design Review 7/15/08 Committee Peter Stefan (SLAC) chair, Alistair Mac. Dowell (ALS), Rolf

Optical Design Review 7/15/08 Committee Peter Stefan (SLAC) chair, Alistair Mac. Dowell (ALS), Rolf Follath (BESSY) General comments “Overall, the review committee felt that the optical design presented is good, and will likely work. The assembled SXR design team has good experience in this area and a good ‘track record. ’ Also, the damage issues seemed properly considered. ” Specific recommendations Because of the as-coated density of B 4 C, the mirror incidence angles were changed 15 -> 14 mrad. The Fourier optics calculations were repeated with the correct orientation between the offset mirrors and the monochromator. November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Spectrometer Mode Transmission Sample Location Spectrometer Detector at Exit Slit November 12, 2008 Michael

Spectrometer Mode Transmission Sample Location Spectrometer Detector at Exit Slit November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Pump Laser System Replicate system from AMO Csp Laser PM 1 Spectrometer PM 2

Pump Laser System Replicate system from AMO Csp Laser PM 1 Spectrometer PM 2 Oscope PMOsc /2 -1 F 2 Oscillator Controls F 1 Laser Hall Hutch 2 PM 4 PM 3 C 5 VEC /2 -3 C 2 /2 -2 M 4 M 3 To Experiment L 3 L 5 /2 -4 PM 5 AC C 3 2 VEC L 1 L 4 C 4 M 1 C 1 Harmonics To Experiment M 2 L 2 Courtesy Greg Hays November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

SXR / AMO Interfaces AMO & SXR engineers are working closely to resolve all

SXR / AMO Interfaces AMO & SXR engineers are working closely to resolve all conflicts as the are identified. q Space is tracked q Systems checked for compatibility q Ideas and designs are shared (i. e. mostly stolen from AMO and LUSI) q Operational boundaries have been defined November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Space between instruments is closely tracked Clears AMO instrumentation Minimize diameter SXR beam pipe

Space between instruments is closely tracked Clears AMO instrumentation Minimize diameter SXR beam pipe November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

AMO K-B optics and SXR Space Mono forbeing extension AMO into 2 nd Hutch

AMO K-B optics and SXR Space Mono forbeing extension AMO into 2 nd Hutch Rack space is apportioned designed by the same engineer November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Operations on the SXR beam line requires installation of the monochromator which is scheduled

Operations on the SXR beam line requires installation of the monochromator which is scheduled for installation winter shutdown ’ 09 -‘ 10. Initial operational mode: No access to hutches with beam, i. e. no access to Hutch 1 when AMO is running. (July –Dec ‘ 09) Intermediate operational mode: No access to hutches with active experiments. Access to hutches with beam passing through. (as soon after start of SXR operations as possible, ~Mar ‘ 10) Final operational mode: Access to hutches with active soft x-ray experiments, Hutch 1 or Hutch 2. 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 (Hutch 1) for spectrograph mode will require additional approvals, testing and implementation of a shielding plan. November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Endstations 8 Endstations described in the TDR document Stöhr Nilsson Chapman Hussein-Shen November 12,

Endstations 8 Endstations described in the TDR document Stöhr Nilsson Chapman Hussein-Shen November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Institutional Roles Institution Support level (k$) Role Initial support for conceptual design (TDR) Purchase

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: 1517 $4447 k November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

SXR Status q The SXR scientific case has been reviewed by SAC. q Technical

SXR Status q The SXR scientific case has been reviewed by SAC. q Technical Design Report (TDR) has been written and accepted. q LCLS has reviewed the project for compatibility. q The X-ray optical design has been reviewed. q The base Mo. U is signed. q Integration of SXR into the LCLS construction project has started. q Proposals for Long lead optical components are coming in and the first contracts have been placed. November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

Status of Mo. U q The Mo. U between SLAC and DESY has been

Status of Mo. U q The Mo. U between SLAC and DESY has been signed by DESY and SLAC. q The technical addendum defining contributions and roles of the members of the consortium is in final draft and should be completed by ? ? . November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

SXR Schedule SXR is just starting to be integrated into the LCLS schedule. These

SXR Schedule SXR is just starting to be integrated into the LCLS schedule. These completion dates are the earliest possible dates. Expected final installations are in Dec ’ 09/Jan ’ 10. November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu

SXR Instrument team q Anders Nilsson (Stanford) & Wilfried Wurth (Hamburg): consortium leaders q

SXR Instrument team q Anders Nilsson (Stanford) & Wilfried Wurth (Hamburg): consortium leaders q Phil Heimann & Nicholas Kelez (ALS): monochromator and KB optics q Yves Acremann (Stanford) & Alexander Foehlisch (Hamburg): diagnostics and with Bill White & Greg Hays (LCLS) laser beam delivery q Stefan Moeller (LCLS): LCLS contact q Gunther Haller, Perry Anthony, Dave Nelson (SLAC): controls q Amedeo Perazzo, Chris O’Grady & Remi Machet: data acquisition q Jacek Krzywinski (LCLS): fourier optics simulations q Regina Soufli (LLNL): optical coatings q Michael Rowen* (LCLS/SLAC) : overall beam line systems, budget, schedule, interfaces *Only full-time person. November 12, 2008 Michael Rowen LCLS FAC Meeting [email protected] stanford. edu