1 / 24

THEMIS T IME H ISTORY OF E VENTS AND M ACROSCALE I NTERACTIONS DURING S UBSTORMS

THEMIS T IME H ISTORY OF E VENTS AND M ACROSCALE I NTERACTIONS DURING S UBSTORMS RESOLVING THE MYSTERY OF WHERE, WHEN AND HOW AURORAL ERUPTIONS START THEMIS Mission Integration Working Group University of California, Berkeley June 15-16, 2005. Conference Rooms. Main Conference Room.

duy
Download Presentation

THEMIS T IME H ISTORY OF E VENTS AND M ACROSCALE I NTERACTIONS DURING S UBSTORMS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. THEMIS • TIME HISTORY OF EVENTS AND MACROSCALE INTERACTIONS DURING SUBSTORMS • RESOLVING THE MYSTERY OF WHERE, WHEN AND HOW AURORAL ERUPTIONS START • THEMIS • Mission Integration Working Group • University of California, Berkeley • June 15-16, 2005

  2. Conference Rooms Main Conference Room • Coffee, and food at Silver Addition Main Entrance (outside) • Splinter room in Silver Annex Conference • Parking Passes, see Daniele • Other issues, see:Vassilis Angelopoulos or Peter Harvey Silver Addition Samuel Silver Space Sciences Laboratory Silver Annex For maps, etc. go to http://www.ssl.berkeley.edu/

  3. AGENDADay 1

  4. AGENDADay 2

  5. Attendance

  6. SPACE SCIENCES LABORATORY • Background • Initiated in 1958 by Drs. Teller and Seaborg • Multidisciplinary organization • Connecting campus research to space efforts • Facility opened in 1966 • New facilities added in 1998 • Research Efforts Involving • Balloons • Sounding rockets • Satellite instruments & science complements • Complete satellites • Mission & Science Operations • Ground Station Operations • Agencies Involved • NASA, NSF, NSBF, USAF, DOE • ESA, ISAS, IKI, PSI, etc. • $50M/yr (>90% NASA, <10% other.)

  7. Facilities • 55000 sq. ft. Office and Laboratory Space • Employing 420 Scientists, Engineers, Staff • On-Site Machine Shop • Clean Room Facilities to Class 100 • Thermal Vacuum Facilities up to 3m diameter • Spacecraft Integration Facility • 4-story High Bay • Radiation Sources Laboratory • Mission Operations Centers • Science Operations Centers • 11 Meter S-Band Satellite Antenna • Secure High Speed Communications to NASA

  8. Operational Flight Instruments RHESSI FAST IMAGE FUV, WIC GALEX detectors CHIPS Polar EFI Wind 3DP Cluster II EFW, CIS Mars Global Surveyor ER ROCSAT 2 - ISUAL Ulysses LAN FUSE detectors SOHO UVCS & SUMER detectors KITSAT SPEAR Under Development HUBBLE - COS STEREO – IMPACT THEMIS

  9. SSL PERSONNEL 107 Scientific Researchers 133 Professional/Technical/Support Staff 150 Graduate and Undergarduate Students SPACE PHYSICS RESEARCH GROUP(136 total personnel) 46 Scientific Researchers 25 involved in Magnetospheric Physics 46 Engineering & Technical Staff 37 Graduate & Undergraduate Students

  10. Operations Components • Mission Operations Center • Science Operations Center • 11-meter S-Band Antenna with • X-band capability • High Speed Communications to NASA • Ground Network • Network Security • Autonomous Operations • Pass Supports • Orbit Determination & Tracking • Spacecraft Command & Control • Emergency Response System • Self Checking

  11. FAST: A NASA Small Explorer (SMEX)PI: Prof. Robert P. Lin UCB-SSL • Science Package • Electric Field Instruments • Particle Instruments • Electronics • Mission Operations • Science Operations • Launched on 21 Aug 1996 • Mission Continuing through 2005

  12. RAMATY HIGH ENERGY SOLAR SPECTROSCOPIC IMAGER • RHESSI: A NASA Small Explorer (SMEX)PI: Dr. Charles Carlson, UCB-SSL • Project Management • Spacecraft Bus Subcontract to Spectrum Astro • Science Package • Imager • Spectrometer • Electronics • Launch Site Processing • Mission Operations • Science Operations • Ground Data Systems • Launched February 5, 2002 • Mission continuing through 2006-7

  13. Cosmic Hot Interstellar Plasma Spectrometer (CHIPS)A NASA University-Class Explorer (UNEX)PI Dr. Mark Hurwitz UCB-SSL

  14. TIME HISTORY OF EVENTS AND MACROSCALE INTERACTIONS DURING SUBSTORMS • THEMIS: A Middle Class Explorer (MIDEX#5) • PI: Dr. Vassilis Angelopoulos UCB-SSL • Project Management • Probes and Probe Carrier by Swales Aerospace • Mission Integration • Launch Site Processing • Science Package • Mission Operations • Science Operations • Ground Data Systems • Launch: October 19, 2006 • Nominal Lifetime: 2 years Production Mode Development ofFlight Boards (Here: SST Front-End)

  15. TIME HISTORY OF EVENTS AND MACROSCALE INTERACTIONS DURING SUBSTORMS (THEMIS) • SCIENCE GOALS: • Primary: • “How do substorms operate?” • One of the oldest and most important questions in Geophysics • A turning point in our understanding of the dynamic magnetosphere • First bonus science: • “What accelerates storm-time ‘killer’ electrons?” • A significant contribution to space weather science • Second bonus science: • “What controls efficiency of solar wind – magnetosphere coupling?” • Provides global context of Solar Wind – Magnetosphere interaction RESOLVING THE PHYSICS OF ONSET AND EVOLUTION OF SUBSTORMS Principal Investigator Vassilis Angelopoulos, UCB EPO Lead Nahide Craig, UCB Project Manager Peter Harvey, UCB Industrial Partner SWALES Aerospace

  16. Auroral eruptions and substorms …are a manifestation ofmagnetospheric substorms Auroral eruptions… SOLARWIND Aurora MAGNETOSPHERE EQUATORIAL PLANE

  17. : Ground Based Observatory Mission elements Probe conjunctions along Sun-Earth line recur once per 4 days over North America. … while THEMIS’s space-based probes determine onset of Current Disruption and Reconnection each within <10s. Ground based observatories completely cover North American sector; can determine auroral breakup within 1-5s …

  18. First bonus: What producesstorm-time “killer” MeV electrons? Affect satellites and humans in space ANIK telecommunicationsatellites lost for days to weeksduring space storm • Source: • Radially inward diffusion? • Wave acceleration at radiation belt? • THEMIS: • Tracks radial motion of electrons • Measures source and diffusion • Frequent crossings • Measures E, B waves locally

  19. Second bonus: What controls efficiencyof solar wind – magnetosphere coupling? • Important for solar wind energy transfer in Geospace • Need to determine how: • Localized pristine solar wind features… • …interact with magnetosphere • THEMIS: • Alignments track evolution of solar wind • Inner probes determine entry type/size

  20. Baseline launch elements Nominal Launch:Launch Elements Fuel margins Launch Date(APG,INC)(baseline,P5->1,P5->2->1) October 19, 2006 (14.2 Re, 13.4deg) (23.4%, 13.6%, 20.7%) OPTIMAL APER = -10deg Near-zero goal 80<aper<110 deg goal

  21. Probe release 1+4

  22. Boom release 2 first+6 later

  23. Ascend to orbit (courtesy Sabine Frey) Tail Season #1 Tail Season #1 INC T[hrs] Days sinceLaunch Days sinceLaunch Tail Season #2 Tail Season #2 T[hrs] INC Days since10/16/07 Days since10/16/07

  24. Probe alignments (courtesy Sabine Frey) Tail Season #1 Tail Season #2 Selected launch elements meet science requirements with sufficient fuel margins

More Related