1 BROOKHAVEN SCIENCE ASSOCIATES 0.1-meV Optics Update Yong Cai Inelastic X-ray Scattering Group Experimental Facilities Division, NSLS-II Experimental.

Slides:



Advertisements
Similar presentations
Focusing monochromators/analyzers Asymmetric diffraction geometry of the monochromator Dispersive double crystal monochromator Two wavelength sandwich.
Advertisements

1 BROOKHAVEN SCIENCE ASSOCIATES Can the optics get to 1-nm? Hanfei Yan NSLS-II, Brookhaven National Laboratory.
Tomsk Polytechnic University1 A.S. Gogolev A. P. Potylitsyn A.M. Taratin.
1 BROOKHAVEN SCIENCE ASSOCIATES National Synchrotron Light Source II Semi-permanent Setup at the NSLS for 0.1 meV Optics R&D Zhong.
1 BROOKHAVEN SCIENCE ASSOCIATES National Synchrotron Light Source II Status and Progress of 0.1meV R&D at NSLS-II Xianrong Huang, Zhong Zhong, Yong Cai.
Upcoming Review of the Hall D Photon Beam and Tagger Richard Jones, University of Connecticut, for the GlueX collaboration GlueX Collaboration Meeting.
Bragg Spectrographs for LCLS Diagnostics and Science D. Peter Siddons Zhong NSLS Brookhaven National Laboratory Upton, NY
Richard M. Bionta XTOD October 12, 2004 UCRL-PRES-XXXXX X Ray Transport, Optics, and Diagnostics, Overview Facility Advisory Committee.
On-Orbit Adjustment Calculation for the Generation-X X-ray mirror Figure D. A. Schwartz, R. J. Brissenden, M. Elvis, G. Fabbiano, D. Jerius, M. Juda, P.
John Arthur Photon April 20, 2006 Photon Systems Update John Arthur SLAC Photon Systems Manager.
Stephen Milton Undulator System 20 April, 2006 LCLS Undulator System Update S. Milton, ANL FAC, April 20 th, 2006.
MICE Collaboration Meeting March 29 - April 1, CERN MICE alignment, tolerances and supports Tuesday March 30 Room Edgar Black/IIT March17-
1 Michael Rowen 1 SXR Instrument FAC SXR Instrument Michael Rowen – Engineering Physicist June 9, 2009.
1 BROOKHAVEN SCIENCE ASSOCIATES Welcome: Workshop Overview of the Workshop Yong Cai NSLS-II February 7-8, 2008.
1 BROOKHAVEN SCIENCE ASSOCIATES Nanopositioning R&D Plan Yong Chu Experimental Facilities Division, NSLS-II Experimental Facilities Advisory Committee.
A U.S. Department of Energy Office of Science Laboratory Operated by The University of Chicago Argonne National Laboratory Office of Science U.S. Department.
XCS Aymeric ROBERT 1 LUSI X-ray Correlation Spectroscopy Instrument Advanced Procurement Review : Large Offset Monochromator.
1 BROOKHAVEN SCIENCE ASSOCIATES Steve Hulbert, for John Hill CFAC May 8, 2007 Experimental Facilities Update.
Effective lens aperture Deff
1 BROOKHAVEN SCIENCE ASSOCIATES John Hill PAC May 24 th 2007 Initial Beamline Suite and Beamline Development.
Instrument Development Test Station at HFIR CG1 Lowell Crow, May 15, 2009.
Environmental Sciences Department BNL Environmental Sciences Dept. and EnviroSuite: from NSLS to NSLS-II Jeff Fitts July 18, 2007 Environmental Research.
1 BROOKHAVEN SCIENCE ASSOCIATES Lonny Berman and Dario Arena, NSLS Summary The present built-out NSLS-II design includes: 30 bending magnet ports, each.
1 BROOKHAVEN SCIENCE ASSOCIATES NSLS-II Experimental Facilities Overview Qun Shen Director, Experimental Facilities Division NSLS-II Experimental Facilities.
Understanding typical users for this instrument Graduate studentGraduate student –not an X-ray expert but wants to make a spatially resolved measurement;
1 BROOKHAVEN SCIENCE ASSOCIATES John Hill EFAC May 10 th 2007 Experimental Facilities Overview.
1 BROOKHAVEN SCIENCE ASSOCIATES User Access and Beamline Development John Hill Director, NSLS-II Experimental Facilities Division NSLS-II User Workshop.
Global Design Effort Beam Delivery System => EDR LCWS07 June 2, 2007 at DESY Andrei Seryi for BDS Area leaders Deepa Angal-Kalinin, A.S., Hitoshi Yamamoto.
The Development of Laue Monochromator at X17B3 National Synchrotron Light Source in (111) diffraction intensities by severer of non-bending Si.
1 BROOKHAVEN SCIENCE ASSOCIATES Experimental Facilities John Hill Director, NSLS-II Experimental Facilities Division NSLS-II User Workshop July 17, 2007.
1 BROOKHAVEN SCIENCE ASSOCIATES Experimental Facilities J.P. Hill Experimental Facilities Division Director PAC Meeting November 20, 2007.
Project Management Mark Palmer Cornell Laboratory for Accelerator-Based Sciences and Education.
1 BROOKHAVEN SCIENCE ASSOCIATES NSLS-to-NSLS-II beamline transition plan Outline Reasons, Scope, Criteria, Further input, Timeline Transition plan, Beamline.
SAXS/WAXS Conversion for Beamline Engineering Review.
Assessing Single Crystal Diamond Quality
1nm R&D plan K. Evans-Lutterodt Contributions from:
1 BROOKHAVEN SCIENCE ASSOCIATES Mirror Metrology and Development Strategy Q. Shen, K. Kaznatcheev, A. Fluerasu Experimental Facilities Division NSLS-II.
Stability Requirements for Superconducting Wiggler Beamlines
1 BROOKHAVEN SCIENCE ASSOCIATES Workshop, February 7-8, 2008 Inelastic X-ray Scattering at NSLS-II IXS Program, and Current Project Beamline.
1 BROOKHAVEN SCIENCE ASSOCIATES NSLS-II Overview Satoshi Ozaki Director, Accelerator Systems Division NSLS-II Project March 27, 2007.
Proposed NSLS X13B Microdiffraction Instrument Source & Optics James M. Ablett National Synchrotron Light Source.
1 BROOKHAVEN SCIENCE ASSOCIATES NSLS-II Beamline Development John Hill NSLS-II Experimental Facilities Division Director PAC Meeting November 20, 2007.
FNAL efforts on LHC Crab Cavity R&D (Proposals for R&D sub-tasks, resources and schedule) Nikolay Solyak.
14FEB2005/KWCAE2-UsersGroup Astro-E2 X-Ray Telescopes XRT Setup & Structure Performance Characteristics –Effective Area –Angular Resolution –Optical Axes.
Diamond Radiator Fabrication and Assessment Brendan Pratt Fridah Mokaya Richard Jones University of Connecticut GlueX Collaboration Meeting, Jefferson.
1 BROOKHAVEN SCIENCE ASSOCIATES Lonny Berman EFAC May 10 th 2007 ID Beamline Optics and Damping Wigglers.
Crystal Channeling Study (experiment to study and apply channeling to HEP) Vincenzo Guidi University of Ferrara and INFN.
NMI3 meeting, ISIS, September 26-29, 2005 Contents: Overview of new capabilities of the RESTRAX software Numerical optimizations of TAS parameters Virtual.
New emittance monitor beamline
A New High Intensity Cold Neutron Spectrometer at NIST J. A. Rodriguez 1,3, P. Brand 3, C. Broholm 2,3, J.C. Cook 3, Z. Huang 3, P. Hundertmark 3, J. Lynn.
TC Straw man for ATLAS ID for SLHC This layout is a result of the discussions in the GENOA ID upgrade workshop. Aim is to evolve this to include list of.
1 BROOKHAVEN SCIENCE ASSOCIATES A Wiggler Beamline for XAS at NSLS-II Paul Northrup NSLS-II Project and Environmental Sciences Department Brookhaven National.
Michael Pivovaroff OCT 2005 UCRL-PRES FEL Offset Mirrors LCLS Week * FAC Meeting 26–27 October 2005.
Characterization of a strip crystal previously in use at FNAL Vincenzo Guidi, Andrea Mazzolari CERN, March 24, 2009 University of Ferrara and INFN - Italy.
1 BROOKHAVEN SCIENCE ASSOCIATES Vibrations effect on 1nm focussing K. Evans-Lutterodt NSLS-II VTG Januaury
HYSPEC IDT Polarized Beam Mode for the Hybrid Spectrometer (HYSPEC) at the Spallation Neutron Source. Outline Polarization analysis and the HYSPEC place.
1 BROOKHAVEN SCIENCE ASSOCIATES Beam Stability Overview NSLS-II CFAC Meeting May 8, 2007 S. Krinsky.
Seungyu Rah (Pohang Accelerator Laboratory, POSTECH, Korea) Nov
October, 2001 Hybrid Spectrometer for Single Crystal Studies at the Pulsed SNS: an update. n Principal features of the proposed hybrid spectrometer. n.
SRI 2007: CLS Optical Metrology Facility- Overview
T980 STATUS AND CHANGES FOR
Fabrication of silicon crystals for COHERENT experiment
SSRL Beam Line Infrastructure Update February 2002
Vertex Detector Mechanical R&D Design Questions and Issues
Davide De Salvador INFN-Laboratori Nazionali di Legnaro &
X-Ray Transport, Optics, and Diagnostics WBS Alan J
Test Beamline System Requirements and Charge to PDR Committee
X-Ray Endstation Design & Management/Commissioning
X-Ray Endstation Systems (XES) 2006 Schedule
LCLS Photon Systems Overview
Presentation transcript:

1 BROOKHAVEN SCIENCE ASSOCIATES 0.1-meV Optics Update Yong Cai Inelastic X-ray Scattering Group Experimental Facilities Division, NSLS-II Experimental Facilities Advisory Committee Meeting April 23-24, 2009

2 BROOKHAVEN SCIENCE ASSOCIATES The IXS Group Current Members  Xianrong Huang, 0.1 meV crystal optics  Marcelo Honnicke, multilayer mirrors for analyzer system  Jeff Keister, R&D beamline operation, upgrade and support  Zhong Zhong, NSLS D&I beamline spokesperson (M)  Scott Coburn, engineering design (50%)  Leo Reffi, mechanical design (on loan from design group)  Bill Struble, crystal cutting and lab support  Yong Cai, IXS beamline, group leader Future Members (per staffing plan)  Postdoctoral Fellow (Crystal fabrication, optics testing, etc.) – offer accepted, to start around June 1  Scientific Associate (Crystal fabrication lab) – Searching  Beamline Scientist (IXS beamline) - Searching

3 BROOKHAVEN SCIENCE ASSOCIATES Outline Summary of progress to date, issues & plan Current optical scheme and technical challenges Near-term milestones and longer-term plan Summary

4 BROOKHAVEN SCIENCE ASSOCIATES Summary of Progress to Date, Issues & Plan Major progress in building up the infrastructure to support the R&D program  R&D beamline and optics test end station at NSLS (X16A)  Crystal fabrication labs (Bldg 703) R&D activities have been focused on gaining a better understanding of the technical requirements and challenges of the optics  0.1meV crystal optics  Multilayer mirrors Issues and plan  Crystal fabrication capabilities (equipment & staffing)  Access to more advanced light source(s) for prototyping Since last EFAC Meeting (May 5-7, 2008)

5 BROOKHAVEN SCIENCE ASSOCIATES 0.1meV Crystal Optics CDW CDDW CDW and CDDW optics schemes at 9.1 keV proposed by Yu. Shvyd’ko, verified by our dynamical theory calculations (Xianrong Huang) 0.11 meV Large angular acceptance (>100 µrad) High efficiency (~50%) Sharp tails (Borrmann effect), more important than resolution!

6 BROOKHAVEN SCIENCE ASSOCIATES Beamline and Spectrometer Optics Layout ~20 μrad Divergence ΔE of CDWΔE of CDDW Θ e (= 90˚ – φ) Length of D 2 meV1 meV4.5˚120 mm 0.7 meV0.3 meV1.5˚380 mm 0.2 meV 0.1 meV0.4˚1400 mm! Major parameters determined and verified for E = 9.13 keV, Δ θ e = 5 µrad, and h = 0.5 mm Comb crystal proposed by Yu. Shvyd’ko: a possible solution to the long D crystal length, but a major challenge to fabricate (in progress)

7 BROOKHAVEN SCIENCE ASSOCIATES Comb Crystal Fabrication Current approach employed by APS: o Cut directly from a monolithic crystal. o Polishing the diffraction surface a major challenge. Alternative approach to be explored: o Prepare reference Si(100) surface from a monolithic block o Cut individual fins allowing fine polishing of diffraction surface o Align individual blocks using reference surface on symmetric backscattering Si(800) reflection o Mechanical positioning a challenge, but more solvable As-cut surface roughness 35.4 nm by AFM Reference surface Fine polishing Tilting  (  rad) Reference Si(800) reflection Θ 5mm 100mm

8 BROOKHAVEN SCIENCE ASSOCIATES CDDW for 1meV + Channel Cut Collimated  20  rad 55 No need for long D crystal Switchable between 0.1 and 1 meV Channel-cut (grazing 7  ) Require incident beam collimated to ≤20  rad no problem for mono analyzer needs high-precision mirror. CC causes ~20% efficiency loss Tails sharper than Lorentz

9 BROOKHAVEN SCIENCE ASSOCIATES Lattice homogeneity of the crystal:  d/d = ΔE/E ~ (0.1 meV/10 keV) Temperature uniformity and stability: ΔT ≤ 4 mK (Δd/d = αΔT and thermal coefficient of Si: α=2.56  K -1 ) Surface quality slope errors (straightness of surface): < 10 µrad, crystal bending (due to mounting or gravity sag): < 0.2 µrad, surface roughness (causes diffused scattering): < 2 nm Crystal angular stability: < 0.2 µrad as a result of energy tuning by angular rotation, independent of resolution 0.1 – 1 meV, CDW/CDDW analyzer requires 50~100:1 multilayer focusing mirrors for 5~10 mrad acceptance Other Major Technical Challenges

10 BROOKHAVEN SCIENCE ASSOCIATES Angular Stability Energy Tuning by D crystal rotation  : Tuning rate: 0.07 meV/µrad This implies also: o Angular vibrations of C,W, D all change , must be stable < 0.2  rad (independent of targeted energy resolution  E ) o Lattice bending due to gravity sag or mounting changes , so must be < 0.2  rad, for all C, W, D.

11 BROOKHAVEN SCIENCE ASSOCIATES Laterally Graded Multi-layer Mirror CDW or CDDW 0.2 – 0.3 mm Design Objectives:  Angular acceptance: 5 mrad x 5 mrad  To retain a q resolution of 0.01 nm -1 o Corresponding to ~0.1 mrad in horizontal acceptance at 9.1 keV or 20 µm transverse width at 200 mm from source. Possible solution: use area detector! o Laterally projected source size due to sample thickness may be a limiting factor, but not a severe problem due to lessen q resolution required at higher q. (0.1 mrad = 20 µm projected source size at 200mm) 5 mrad 0.1 mrad Horizontal Scattering Plane Strip Detector

12 BROOKHAVEN SCIENCE ASSOCIATES Ideal Mirror Figure CDW/CDDW Sample Sample – first focus (f 1 ) Parabolic ellipsoid (focusing collimator)  Horizontal collimation to 0.1 mrad or better is required in order to retain the q resolution!  Vertical focusing (up to 0.1 mrad) to minimize D crystal length for analyzer, but may limit the horizontal q resolution at low q.  Vertical collimation to less than 20 µrad may allow the use of 2 nd channel cut for resolution switching between 0.1 and 1 meV for the analyzer, and/or possible energy dispersive and q resolved detection in the vertical direction with an area detector  A real challenge to make!

13 BROOKHAVEN SCIENCE ASSOCIATES Alternative Mirror Configurations A single toroidal mirror to approximate the ideal surface Montel optics: parabolic (collimator) in a double bounce geometry (involving beam inversion of L-R and U-D) KB configuration A single mirror only for vertical focusing/collimating Horizontal angular acceptance of C crystal ~ 3mrad! Horizontal energy dispersion of D crystal: E(φ) = E 0 (1-φ 2 /2) Montel Optics (collimating) 0.2 m 10 m

14 BROOKHAVEN SCIENCE ASSOCIATES Other Works Accomplished Multilayer parameters determined and optimized both for parabolic and elliptical figures. o Mirror specifications for a non-graded flat surface Si or B 4 C layer 1.5 nm, W layer 1.0 nm, 100 bi-layers on Si substrate Theoretical peak reflectivity: 85% o Figure specifications In-house ray-tracing codes developed to examine performance of the multilayer mirrors including effects of slope error, roughness, and interlayer thickness fluctuation (δd/d). Actively in contact with possible vendors for test mirrors Test plan using R&D beamline at NSLS developed. FigureP (mm)Θ m (rad)δx (mm)δy (mm)d 1 (nm)d 2 (nm) Parabolic Elliptical

15 BROOKHAVEN SCIENCE ASSOCIATES First CDW-CDW Test at NSLS C,W D Proof of Principles: o Collimation effect of C crystal o Enhanced Bormann transmission of W crystal o Most importantly, the dispersion effect of the D crystal o  E = 10 meV achieved, possible causes being analyzed Tilting  (  rad) ΔE = 10 meV

16 BROOKHAVEN SCIENCE ASSOCIATES New CDW-CDW Test Aim for a more controlled study of the optics to understand conditions to achieve the targeted energy resolution. Verify sharp tail in resolution function with new optical path New C/W crystal to minimize strain Bill Struble’s first crystal With help from Shu Cheung

17 BROOKHAVEN SCIENCE ASSOCIATES Optics Test End Station 17 Current components designed to test CDW-CDW scheme with temperature control ovens Include a double-crystal diffraction / imaging stage for characterizing crystal quality Flexible and adaptable for other schemes (e.g., CDDW, comb crystals, …) Most components fabricated and assembled, and being installed on R&D beamline C/W crystal D crystal in oven

18 BROOKHAVEN SCIENCE ASSOCIATES Temperature Control Oven Room T Outer Oven, ΔT ≤ 0.5 mK Inner Oven, ΔT ≤ 0.25 mK First oven tests: passive controlling on both inner (~45 C) and outer (~35 C) ovens. Excellent stability; uniformity to be tested. ~15 hr D crystal

19 BROOKHAVEN SCIENCE ASSOCIATES Dedicated R&D Beamline at NSLS An existing PRT beamline, revived after major clean-up and repair effort of shielding, vacuum, safety and user interlock, beamline and endstation control, to allow initial testing of 0.1 meV resolution optics Existing beamline optics (a 1:1 focusing mirror and a DCM) found to be functional but required optimization, to be upgraded within 6-12 months. Beamline granted operation status since April 10, 2009 after beamline review and readiness walkthrough. (took just 1 year from inception to operation, but still a lot of work!) Source Mirror (1:1) Mono R&D beamline assembly Endstation

20 BROOKHAVEN SCIENCE ASSOCIATES Crystal Fabrication Labs EQUIPMENT X-ray Diffractometer / Blade Saw / Diamond Wire Saw Lapping Machine / Spindle Polisher / CMP Polisher Etching Hood High-precision dicing saw for Comb crystal fabrication Two labs being fit out, to be completed in April: Cutting / Lapping Lab major equipments: o Crystal Diffractometer (NSLS equipment) o Mark Blade Saw (NSLS equipment) o Diamond wire saw (delivered) o Lapping machine (delivered) o Strasbaugh Spindle Polisher (rough polishing) Polishing / Etching Lab major equipments: o ADT dicing saw (delivered) o Strasbaugh CMP polisher (superfine ~ 0.1 nm) o Strasbaugh Spindle Polisher (fine polishing) o Chemical etching hood and wet bench Partial operation in April Need to consolidate fabrication equipment and streamline fabrication process Too few staff with expertise in polishing and etching

21 BROOKHAVEN SCIENCE ASSOCIATES Overall Strategy and Near-Term Milestones CDW/CDDW prototypes 1meV  0.5meV  0.1meV Comb crystals fabrication and test Design and Develop collimating multilayer mirrors Overall strategy and timeline: 0.1 meV prototype spectrometer DateItemStatus June 2009 Actual measurement of the resolution function for CDW scheme. Looking for a sharper tail may be more important than the actual resolution. Still on schedule, waiting on completion of end station. Key areas to watch: new control system, ovens test, X16A mirror and mono. Sept 2009 Fabrication and testing of first comb crystal cut for 1meV. Energy resolution and efficiency measured. Still on schedule, need to push for bldg 703 labs. Hire of scientific associate to fill knowhow gap (etching and polishing). Short-term outsourcing Sept 2009 Fabrication and testing of multilayer mirror. Demonstrate required specs can be met. In progress, potential road block – the on-time delivery of mirror Nov 2009 Demonstration of the CDDW/CDDW scheme (beam pass thru all optics) Area to watch, continue investigation of alternative schemes

22 BROOKHAVEN SCIENCE ASSOCIATES Longer-Term Plan & Milestones 2010 Develop a prototype with 1meV resolution Strategy being considered: a Partner User Proposal with APS for Sector 30 Demonstration experiments on Plexiglas with 1meV resolution (real test of energy resolution and tail by scattering rather than diffraction) Full work on CDDW prototype to test 0.5 meV resolution (with comb crystals), including detailed exploration of crystal quality (defects, impurities, inhomogeneities), fabrication issues. Test and improve collimating/focusing multilayer mirrors Seek alternative approaches if encounter unexpected showstoppers 2011 Test and improve analyzer optics with multilayer mirrors Full work on CDDW prototype to test 0.1 meV resolution (with comb crystals) Finalize design

23 BROOKHAVEN SCIENCE ASSOCIATES Summary Excellent progress has been made in establishing the essential infrastructure to support the R&D program. Initial test results of the asymmetric dispersion optics prove the working principles of the optics. Key technical challenges to achieve the 0.1meV resolution for both the monochromator and analyzer are now well understood and being addressed. Need to streamline crystal fabrication capability within the NSLS-II project, and for prototyping a 1meV resolution instrument. A modified approach with intermediate staged goals may be necessary for the development of the IXS beamline.