Proposed NSLS X13B Microdiffraction Instrument Source & Optics

Proposed NSLS X13B Microdiffraction Instrument Source & Optics

Proposed NSLS X13B Microdiffraction Instrument Source & Optics James M. Ablett National Synchrotron Light Source NSLS 2.8 GeV X-ray Storage Ring X13 Straight-Section EPW MGU Log [ Brightness ( ph / sec / mm2 /mrad2 / 0.1% BW / 300 mA) ]

NSLS 'Hard' X-Ray Sources 1st Harmonic MGU IVUN X17 Wiggler 2nd Harmonic 3rd Harmonic X21 / X25 Wigglers X13 Wiggler

NSLS Bending Magnet Photon Energy [keV] X13 Undulator Source The Mini-Gap Undulator [MGU] the brightest source of hard x-rays (E ~ 3.7 keV 16 keV) at the NSLS. MGU parameters: 54 pole, 1.25 cm period At a gap of 3.3 mm , Magnetic field = 0.92 Tesla and Deflection Parameter, K~1.07 Fundamental @ 3.7 keV, 4x1017 ph/sec/mm2/mrad2/0.1%BW/300mA

Brightness (ph/sec/mm2/mrad2/0.1%BW/300mA) MGU Brightness Magnetic Gap=3.3 mm 8x1017 Calculated Experiment 6x1017 4x1017 2x1017

0 2 4 6 8 10 12 Photon Energy [keV]

14 16 Log[Brightness (ph/sec/mm2/mrad2/0.1%BW/300mA)] MGU Spectral Measurements (August 2002 Ablett,Berman) MGU Tuning Curves 18 17 16

15 14 2 6 10 14 Photon Energy [keV] 18

Current X13B Beamline Status monochromator hutch 27 24 20 15

12 numbers (in meters )indicate distance from center of X13 straight-section, where MGU is located. Specifications The X13B microdiffraction instrument will be modular and compact in design, which will make available a variety of x-ray optics for the experimentalist. Focused X-ray Beams on the micron-length scale and below, together with low and high x-ray divergence will be available with these optics.These will be mounted on a motorized rails and will be readily accessible. Pink Beam (Laue) and Monochromatic modes of operation will be available.- Energy tunability will be accomplished through a

4 bounce monochromator. X13B Microdiffraction Instrument Layout x-ray microfocusing optics detector circle four-bounce mono tank vibration isolation table diffractometer vibration isolation table 24

25 26 Distance from MGU source [meters] 27 Suite of Optics offered Pin Holes Capillaries KB Mirrors Zone Plates Planar Refractive Lenses (Current R&D)

Kirkpatrick-Baez Elliptical Mirrors Key Features: Achromatic - Energy independent focusingpink beam and monochromatic modes Accurate Elliptical Figures Achievable (either by bending or metal deposition ) Small Spot Sizes Heavy metal Polished spherical Silicon substrate High Reflectivity at Grazing Incidence Angles X13B Microprobe

differentially-deposited elliptical KB optics have been used at X13B during the past few years, designed primarily for high-pressure x-ray spectroscopy. Vertical blade scan current derivative Horizontal blade scan current derivative ~ 9 microns FWHM ~ 3 microns FWHM blade position [ microns ] blade position [ microns ] X13B Microprobe

Calcium K Fluorescence Mapping of Osteoarthritic Bone 1. 3.7 mm 3. 2. 3.3 mm 1 . 2.

3. Preliminary KB layout 25 m to MGU source 2cm incident x-rays focal position 3cm 10 cm Expected Parameters 1 micro-radian figure error Spot size 0.7 x 2 micron2

Divergence 1mrad (v) x 7 mrad(h) 8 keV, 6x109 ph/sec Gain 5x104 With Figure Error (1 micro-radian) X13B Microprobe R&D Efforts -Planar Refractive Lenses Intensity [arb. Unit] (K. Evans-Lutterodt, J.M. Ablett) Position [mm] Summary

A state-of-the-art hard x-ray microdiffraction instrument is proposed for NSLS mini-gap undulator beamline X13B. It will offer a variety of x-ray microfocusing optics micron scale spatial resolution and below & high and low divergence. Big-beam (unfocused ) mode. Pink Beam and Monochromatic Modes of Operation. Simultaneous fluorescence and diffraction information.

Recently Viewed Presentations

  • Chapter 12 Health & Medicine How does the

    Chapter 12 Health & Medicine How does the

    HF(aq) + H2O(l) ⇌ H3O+(aq) + F−(aq) For these weak acids, such as hydrofluoric acid, HF, there is a considerable amount of undissociated HF present, as well as its . conjugate base, F . A conjugate base reacts with the...
  • CAPTCHA, THE ESP GAME, AND OTHER STUFF LUIS

    CAPTCHA, THE ESP GAME, AND OTHER STUFF LUIS

    www.captcha.net www.espgame.org slide design luis von ahn captcha crew luis von ahn manuel blum nicholas hopper john langford the esp game crew luis von ahn laura dabbish speaker's entertainment provided by homestarrunner.com special thanks to aditya akella josh benaloh lenore...
  • The Marine Biology of Spongebob Squarepants

    The Marine Biology of Spongebob Squarepants

    Gary the Snail. General name - Sea Snail. Classification - Kingdom Animalia, Phylum Molusca, Class Gastropoda. Invertebrate - does not have a backbone, but does have a protective shell. Each species of sea snail differs in what they eat, but...
  • The Formation of Western Europe, 8001500 CHAPTER 14

    The Formation of Western Europe, 8001500 CHAPTER 14

    14 CHAPTER The Formation of Western Europe, 800-1500 910 Benedictine Abbey founded at Cluny, France. 987 Capetian dynasty begins in France. 1066 Norman invasion of England. 14 CHAPTER Time Line 800 1500 HOME The Formation of Western Europe, 800-1500 1453...
  • Descriptive Writing

    Descriptive Writing

    -The happy students walked into class with a huge smile on their faces. -The boy gave his girlfriend prettyred flowers. Adverbs. Words used to describe a verb, an adjective or another adverb. ... Similes: directly comparing two things through connective...
  • Consistency Checking of RM-ODP Specifications

    Consistency Checking of RM-ODP Specifications

    Consistency Checking of RM-ODP Specifications Kenneth Baclawski Mieczyslaw Kokar Jeffrey Smith Jerzy Letkowski
  • Digestive system of the ox The mouth The

    Digestive system of the ox The mouth The

    Digestive system of the ox. The mouth. The cavity of the mouth is shorter and wider-the vestibule is more capacious. The lips are thick,wide and immobile-middle part of upper lip and the surface between the nostrils is bare-termed muzzle-it is...
  • 2016 First Quarter

    2016 First Quarter

    Comparing models . Payment facilitation vs. traditional acquiring. Use a master merchant account to process transactions on behalf of customers vs. each merchant using its own account to process transactions with traditional acquiring.You are underwritten by an acquirer and then...