Work with plasmas Work with RPAs

Slides:

Advertisements

Similar presentations

Cristina Chifor SESI Student Intern 2005 Solar Physics, Code 612 NASA/Goddard Space Flight Center Mentors: Dr. Ken Phillips & Dr. Brian Dennis FE AND FE/NI.

Advertisements

Speed-I View from Material Side Qing Peng, Anil U. Mane, Jeffrey W. Elam Energy Systems Division Argonne National Laboratory Limitations on Fast Timing.

PIII for Hydrogen Storage

This work was performed under the auspices of the Significant Opportunities in Atmospheric Research and Science Program. SOARS is managed by the University.

1 Introduction to Plasma Immersion Ion Implantation Technologies Emmanuel Wirth.

PSSC Space Instrument Laboratory Plasma instrument calibration system provides an ion beam of energy range up to 130keV/charge in a clean room To develop.

1 Grades 3 - 5: Introduction. 2 Better Observation Of The Sun And Earth Importance of Space Technology.

RHESSI/GOES Observations of the Non-flaring Sun from 2002 to J. McTiernan SSL/UCB.

Summer student work at MSSL, 2009 Kate Husband – investigation of magnetosheath electron distribution functions. Flat-topped PSD distributions, correlation.

Martian and Lunar Environment Test Apparatus Nicholas Vachon September 30, 2008.

Gravitational waves LIGO (Laser Interferometer Gravitational-Wave Observatory ) in Louisiana. A laser beam is.

Stephanie Moats Mentor: Kathy Reeves August 2009 Harvard-Smithsonian Center for Astrophysics.

Measuring the Magnetic Field in the Sun and the Interstellar Medium Steven R. Spangler… University of Iowa.

SMART About NASA’s Magnetospheric Multiscale Mission (MMS) MAGNETIC RECONNECTION is a little-understood physical process at the heart of space weather.

The Effect of Solar Wind on Pulsar Observations Xiaopeng YOU Southwest University, Chongqing, China.

What coronal parameters determine solar wind speed? M. Kojima, M. Tokumaru, K. Fujiki, H. Itoh and T. Murakami Solar-Terrestrial Environment Laboratory,

Spacecraft bus voltage and power DSCS II RCA SATCOM MILSTAR TDRS SKYLAB SPACE TELESCOPE LEASAT ISS HS702 space factory 、 space hotel.

Space Weather Major sources of space weather ● Solar wind – a stream of plasma consisting of high energy charged particles released from the upper atmosphere.

VTS Sputter Roll Coater

Solar Weather and Tropical Cyclone Activity Abstract Worldwide tropical cyclone energy and frequency data was obtained from the Unisys Weather database.

8/24.  Matter - any substance which has mass and takes up space  List 5 Examples of Matter:  List 5 Examples of things that are NOT matter:

OBSERVATION OF THE JANUARY 1997 CORONAL MASS EJECTION NEAR THE SUN USING RADIO SOUNDING TECHNIQUE WITH GALILEO SPACECRAFT A.I. Efimov, L.N. Samoznaev,

Cluster photoemission Aug 24, 2011.

CASS/UCSD - Jeju 2015 A Jets in the Heliosphere: A Solar Wind Component B.V. Jackson, H.-S. Yu, P.P. Hick, and A. Buffington, Center for Astrophysics and.

Space Science MO&DA Programs - September Page 1 SS It is known that the aurora is created by intense electron beams which impact the upper atmosphere.

Ion Energy Distributions from a Permanent-Magnet Helicon Thruster Francis F. Chen, UCLA Low Temperature Plasma Physics Webinar, January 17, 2014.

THEMIS/SRR ESA- 1 UCB, 06/08/2003 THEMIS Electrostatic Analyzer (ESA) instrument David W. Curtis Space Sciences Laboratory University of California, Berkeley.

CesrTA EC Build-Up and Mitigation Program - Introduction Mark Palmer June 25, 2009.

Effective drift velocity and initiation times of interplanetary type-III radio bursts Dennis K. Haggerty and Edmond C. Roelof The Johns Hopkins University.

Modern Atomic Theory 4.3. Bohr’s model A. Concentrated on placement of electrons around the nucleus B. Looks like planets revolving around the sun.

IMPORTANCE OF FAST MEASUREMENTS OF SOLAR WIND PARAMETERS AT THE IP SHOCK FRONT Moscow, February 6-10, 2012 Z. Němeček, J. Šafránková, L. Přech, O. Goncharov,

Ion Energetics of the Modes of the CubeSat Ambipolar Thruster Timothy A. Collard 1, J. P. Sheehan 1, and Alec D. Gallimore 1 1 Aerospace Engineering, University.

Jarred Alexander Young December 10,  Filament power supply has been repaired and returned  Beam Testing can continue  Research methods of incorporating.

Real-Time Simulation of 3-Level STATCOM With 72 Switches Topology OPAL-RT TECHNOLOGIES Montreal, Quebec, Canada EMS Rev. 001, October 20,

Jarred Alexander Young September 18,  Beam Analysis  Performed scans with RPA perpendicular to beam to look at possible CEX behavior  Material.

1 Grades 6-8: Introduction. 2 Aerospace Technology Space Science Human Exploration And Development Of Space Earth Science Main Areas Of Research.

ESS 265Low Energy Particle Instruments 1 Particle Measurements Types of particle measurements –Langmuir Probes –Retarding potential analyzers –Magnetic.

ESS 265Low Energy Particle Instruments 1 Retarding Potential Analyzers In the ionosphere, mount along ram velocity, measure species densities –Ram speed.

Solar Wind Helium Abundance and the Minimum Speed of the Solar Wind

Finding the Source of Ion Beams in the Solar Wind Hanna Kristensen Advisors: Justin Kasper and Mike Stevens.

SEPT/STEREO Observations of Upstream Particle Events: Almost Monoenergetic Ion Beams A. Klassen, R. Gomez-Herrero, R. Mueller-Mellin and SEPT Team, G.

Analytic modelling of Rosetta spacecraft potential measurements based on SPIS simulations Master thesis by: Christian Hånberg Swedish Institute of Space.

A Global Hybrid Simulation Study of the Solar Wind Interaction with the Moon David Schriver ESS 265 – June 2, 2005.

SPES Target Group Data…… INFN-CISAS-CNR collaboration The Ablation Ion Source for refractory metal ion beams A preliminary design.

Gyeongbok Jo 1, Jongdae Sohn 2, KyeongWook Min 2, Yu Yi 1, Suk-bin Kang 2 1 Chungnam National University 2 Korea Advanced Institute of Science.

Davin Larson, Roberto Livi, Phyllis Whittlesey,

Data-Model Comparisons

High efficiency work and MBK development for accelerators

Acknowledgements Slides and animations were made by Dr. Jon Karty Mass Spectrometry Facility Indiana University, Bloomington.

T. Agoh (KEK) Introduction CSR emitted in wiggler

Solar Wind Core Electrons

Radio Remote Sensing of the Solar Corona

Solar Flare Energy Partition into Energetic Particle Acceleration

Introduction to Atmospheric Science at Arecibo Observatory

Effect of Faraday shields on capacitive coupling

Spherical Measuring Device of Secondary Electron Emission Coefficient Based on Pulsed Electron Beam Kaile Wen Shulin Liu Baojun Yan Yuzhen Yang Yang.

CESRTA Measurement of Electron Cloud Density by TE Wave and RFA

NASA Nasa's Parker Solar Probe mission set off to explore the Sun's atmosphere in the summer of The probe will swoop to within 4 million miles of.

NASA NASA's Parker Solar Probe mission set off to explore the Sun's atmosphere on Sunday morning August 12, It will swoop to within 4 million miles.

In situ particle detection

Background for JGO: Rosetta dual Langmuir probes (LAP)

Lecture 14. Diagnostic equipment of the accelerators

Study of Fast Ions in CESR

Space activities at Charles University

Grades 3 - 5: Introduction

Grades 9-12: Introduction

Temperature and Thermal Energy

Grades 3 - 5: Introduction

Quantifying CMEs and CIRs to predict future events

Approved for public release; distribution is unlimited

Presentation transcript:

Application of a Fast Modulation Technique to Retarding Potential Analyzers Work with plasmas Work with RPAs Amelia Gagnon – University of North Dakota Mentor: Paul Craven Space Environmental Effects, EM50, MSFC

The Project: Can the Smithsonian Astrophysical Observatory method for plasma measurement work for other RPAs?

What is a Plasma? Earth based: Lightning Neon signs Space based: Solar wind Coronal mass ejections

Equipment Electron Source Ion Source RPA Test Setup in Vacuum Chamber Electron Source Ion Source Retarding Potential Analyzer (RPA) In a set up of

What is an RPA?

Equipment: Retarding Potential Analyzer (RPA) RPA Grids Copper Collector

Equipment: Retarding Potential Analyzer (RPA) Electroformed Nickel Mesh Grid – 90% Transparency RPA Cross Section

The Project: Can the Smithsonian Astrophysical Observatory method work for other RPAs?

Traditional Method Apply DC voltage to retarding grid. Wait specified time. Measure collector current. Repeat first step over specified voltage range. Result is single Current vs Voltage curve.

Smithsonian Astrophysical Observatory (SAO) Method Apply AC modulated voltage to retarding grid. Measure phase-locked collector current response. Repeat first step over fixed range of energy windows. Result is distribution of Current vs Energy. Single Energy Window

Smithsonian Astrophysical Observatory (SAO) Method Energy Window Number Energy Window Lower Value (V) Energy Window Upper Value Energy Window Width 100 105 5 1 110.25 5.25 2 115.7625 5.5125 3 121.5506 5.7881 4 127.6282 6.0776 134.0096 6.3814 6 140.71 6.7004 … 46 898.5008 943.4258 44.9250 47 990.6 47.1742

Results Traditional Method Smithsonian Method

Comparison of Methods Traditional Method SAO Method Beam Energy Energy Spread Flux Energy Stability Flux Stability High Speed

Results Stable Energy/Stable Flux Unstable Energy/Unstable Flux

Comparison of Methods 1 second per I-E curve 120 seconds per I-E curve Traditional Method Smithsonian Method

Why is this important? Faster testing Real-time data feedback Additional information with this method

Conclusion This method worked Group is going to do further testing with higher voltages End goal: use this measurement method within the group

Questions?

References Case et al., Design of a Sun-pointing Faraday Cup for Solar Probe Plus, Thirteenth International Solar Wind Conference, Poster 5-2, Kona-Kailua, Big Island, Hawaii, 18-22 June, 2012. clker.com/cliparts/2/k/n/l/C/Q/transparent-green-checkmark-md.png content.mycutegraphics.com/graphics/sports/stop-watch.png K. W. Olgivie, et al., SWE, A comprehensive plasma instrument for the Wind spacecraft, Space Sci. Rev., vol. 71, p. 55, 1995. nasa.gov/images/content/397961main_HoH1.jpg science.nasa.gov/media/medialibrary/2007/04/27/27apr_nox_resources/Blitzschlag.jpg upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Red_x.svg/2000px-Red_x.svg.png