Extreme Ultraviolet Radiation Spectrometer Design and Optimization

Slides:



Advertisements
Similar presentations
Fisica Generale - Alan Giambattista, Betty McCarty Richardson Copyright © 2008 – The McGraw-Hill Companies s.r.l. 1 Chapter 25: Interference and Diffraction.
Advertisements

AST 101 Lecture 9 The Light of your Life
Interference and Diffraction
Spectral Resolution and Spectrometers
Spectrometer Sam Valerio. Shows spectral distribution of a light source in the form of a graph. This specific one in the Imaging Science Center is called.
Spectral Resolution and Spectrometers A Brief Guide to Understanding and Obtaining the Proper Resolution of the 785 Raman System.
Ultrafast XUV Coherent Diffractive Imaging Xunyou GE, CEA Saclay Director : Hamed Merdji.
Lecture 33 Review for Exam 4 Interference, Diffraction Reflection, Refraction.
Final Review Friday, May 8, When the distance between two slits increases, the fringe spacing 1.Decreases 2.Increases 3.Stays the same 4.Depends.
Single-Slit Diffraction: Interference Caused by a Single “Slit” or “Hole in the Wall”
Transmission grating based XUV imaging spectrometer for W and other high Z emission Space and time resolved spectra from ~ Å Few Å spectral resolution.
Telescopes (Chapter 6). Based on Chapter 6 This material will be useful for understanding Chapters 7 and 10 on “Our planetary system” and “Jovian planet.
1 A Grating Spectrograph for the LCLS Philip Heimann Advanced Light Source Observe the spontaneous radiation spectrum of the individual undulators Observe.
Chapter 25: Interference and Diffraction
R. M. Bionta SLAC November 14, 2005 UCRL-PRES-XXXXXX LCLS Beam-Based Undulator K Measurements Workshop Use of FEL Off-Axis Zone Plate.
Photoelectron Spectroscopy Lecture 7 – instrumental details –Photon sources –Experimental resolution and sensitivity –Electron kinetic energy and resolution.
Example: What is the ratio of the irradiances at the central peak maximum to the first of the secondary maxima?
Lab15_Slides Diffraction Grating
Discussion of measurement methods for femtosecond and attosecond pulses.
ANALYTICAL CHEMISTRY CHEM 3811 CHAPTER 18 DR. AUGUSTINE OFORI AGYEMAN Assistant professor of chemistry Department of natural sciences Clayton state university.
High Harmonic Generation in Gases Muhammed Sayrac Texas A&M University.
14 October Observational Astronomy SPECTROSCOPY and spectrometers Kitchin, pp
Optical Characterization methods Rayleigh scattering Raman scattering transmission photoluminescence excitation photons At a glance  Transmission: “untouched”
Waves: Diffraction Gratings
Development of TOP counter for Super B factory K. Inami (Nagoya university) 2007/10/ th International Workshop on Ring Imaging Cherenkov Counters.
Objective Our goal is to create a radically inexpensive spectrometer for educational purposes using a Raspberry Pi. The prototype is housed in a black.
Multi-colour sctintillator-based ion beam profiler James Green, Oliver Ettlinger, David Neely (CLF / STFC) 2 nd Ion diagnostic workshop June 7-8 th.
1.Stable radiation source 2.Wavelength selector 3.Transparent sample holder: cells/curvettes made of suitable material (Table 7- 2) 4.Radiation detector.
Enhancing the Macroscopic Yield of Narrow-Band High-Order Harmonic Generation by Fano Resonances Muhammed Sayrac Phys-689 Texas A&M University 4/30/2015.
DIFFRACTION AND INTERFERENCE. Specification Topics Interference The concept of path difference and coherence The laser as a source of coherent monochromatic.
Higher Physics – Unit Waves. a a λ λ crest trough Wave Theory All waves transmit energy. The energy of a wave depends on its amplitude. a = amplitude.
Conditions for Interference
Physics 2DL Lectures Vivek Sharma Lecture # 3 Discussion of Experiments.
Today’s Lecture Interference Diffraction Gratings Electron Diffraction
G482. Standing waves and Progressive waves Standing wave A wave remains in a constant position as a result of interference between two waves travelling.
Date of download: 6/1/2016 Copyright © 2016 SPIE. All rights reserved. Spatial (angular) resolution versus field angle for design with toroidal grating.
An introduction to Spectrometric Methods. Spectroscopy Definition Spectroscopy is a general term for the science that deal with the interactions of various.
The Zeeman Effect in Mercury Casey Wall with Advisor Alan Thorndike Summer 2011 Purpose The purpose of this experiment was to observe the effect of a magnetic.
20 Overview current  magnetic field magnetic field  current
Color Light and Optics Review
The Electromagnetic Spectrum High Harmonic Generation
Diffraction Gratings.
Waves: Diffraction Gratings
Dissociation of Molecular Ions Studied by
Using a Radio Telescope
Elettra Sincrotrone Trieste
Photons: Light Waves Behaving as Particles
Acknowledgements Slides and animations were made by Dr. Jon Karty Mass Spectrometry Facility Indiana University, Bloomington.
Preliminary study for Soft X-ray Spectroscopy in VEST
Precise measurement of air fluo yield

Preliminary results on SE1 beamline
Waves: Diffraction Gratings
Diffraction and Thin Film Interference
Chapter 35-Diffraction Chapter 35 opener. Parallel coherent light from a laser, which acts as nearly a point source, illuminates these shears. Instead.
Bi-plasma interactions on femtosecond time-scales
Free Electron Lasers (FEL’s)
Kansas Light Source Upgrade
6a Students know visible light is a small band within a very broad electromagnetic spectrum.
Wave nature of light and optical instruments
Light Investigate the properties and behaviors of mechanical and electromagnetic waves Explore and explain the nature of sound and light energy.
Diagnosis of a High Harmonic Beam Using
LCLS bunch length monitor utilizing coherent radiation
Light and Matter Chapter 2.
High Harmonic Analysis Using a COLTRIMS Technique
Transverse coherence and polarization measurement of 131 nm coherent femtosecond pulses from a seeded FEL J. Schwenke, E. Mansten, F. Lindau, N. Cutic,
DIFFRACTION AND INTERFERENCE
Key areas The relationship between the wavelength, distance between the sources, distance from the sources and the spacing between maxima or minima. The.
Mr. Thompkins in Wonderland
LCLS Lehman Review February 7-9, 2005
Presentation transcript:

Extreme Ultraviolet Radiation Spectrometer Design and Optimization Shaun Pacheco Mentors: Dr. Guillaume Laurent & Wei Cao

Research Project Goal 1: Improve the Resolution Goal 2: Calibrate the Spectrometer to find wavelengths not intensity profile Summarize talk here.

Diagram of Apparatus COLTRIMS Interferometer To XUV Spectrometer GC DM 0.5m FM M1 M4 M2 BS DS RM AF TM 40fs@800nm High-Order Harmonic COLTRIMS Gas Jet Magnetic Coils Spectrometer MCP PSD PSD To XUV Spectrometer Interferometer M1~M4: Plane mirror BS: Beam splitter RM: Recombination mirror MCP: Microchannel Plate FM: Focusing mirror GS: Gas cell DS: Delay stage PSD: Positon Sensitive Detector DM: Diverging mirror AF: Al filter TM: Toroidal Mirror

Diagram of Apparatus Diffraction Grating Spherical Mirror Minus first and second order diffraction shown in the image Phosphor Plate MCP

High Harmonic Generation Where n is an odd integer, ω0 is the fundamental laser frequency, "High-order Harmonic Generation." Swineburne4 Aug. 2010. <www.swinburne.edu.au/engineering/caous/HHG.htm >.

Energies Allowed in Experiment Transmission Argon Highest Order cut-off determined by E = 3.2Up + Ip Ip is the ionization potential of the gas Up is the mean kinetic energy of the electron Highest energy seen is 51eV Aluminum Foil Citation needed Photon Energy (eV) Aluminum Foil 200 nm thickness Argon - 200 mTorr for 3 cm followed by 5 mTorr for 1 m Tong. High-Order Harmonic Generation. <http://www.phys.ksu.edu/personal/xmtong/class/chapter02.pdf> Gullikson, Eric. "X-Ray Interactions With Matter." Lawrence Berkeley National Laboratory. N.p., n.d. Web. 4 Aug. 2010. <henke.lbl.gov/optical_constants/>

Goal 1: Improving the Resolution Phosphor Plate New Placement 100s of nanonmeter size hole Old placement "Microchannel Plate Principles of Operation." HRC. Web. 4 Aug. 2010. <hea-www.harvard.edu/HRC/mcp/mcp.html >.

Goal 1: Improving the Resolution Microchannel Plate 4 mm Phosphor plate Old Gap 10 mm 1 kV per mm otherwise u’ll get a spark Phosphor plate was moved from 10 mm away to 4 mm

Goal 1: Resolution improved Show photoelectron spectrum Theoretical limit New Resolution Old Resolution

Goal 2: Calibrating the Spectrum Find distance of each spectral line from zero order Integrate across the spectral lines to get intensities d is the slit spacing m is the diffraction order θi is the incident angle θd is the diffracted angle Supplementary slide how determined thetai and b

Calibrated Spectrum Black Curve is the photoelectron spectrum Blue Curve is the spectrum from the XUV spectrometer Energy resolution is comparable to photoelectron spectrum Count (arb. Units) Photoelectron Energy (eV)

Results and Discussion Blue Shift Can be Observed Blue Curve – Low Intensity, no blue shift Red Curve – Medium Intensity, blue shift Yellow Curve – High Intensity, blue shift Calibrate positions of peak, not intensity Harmonics

Conclusion XUV spectrum is now comparable to photoelectron spectrum Spectrometer good enough to observe small change in the harmonic wavelength Improvements: Calibrate the intensity profile of XUV spectrum

Work Cited "High-order Harmonic Generation." Swineburne4 Aug. 2010. <www.swinburne.edu.au/engineering/caous/HHG.htm > "Microchannel Plate Principles of Operation." HRC. 4 Aug. 2010. <hea- www.harvard.edu/HRC/mcp/mcp.html >. Gullikson, Eric. "X-Ray Interactions With Matter." Lawrence Berkeley National Laboratory. Web. 4 Aug. 2010. <henke.lbl.gov/optical_constants> Tong. High-Order Harmonic Generation. <http://www.phys.ksu.edu/personal/xmtong/class/chapter02.pdf>

Questions?