Introduction of Graduate School of Science, the University of Tokyo and Associated Institute (ISAS/JAXA) and Suggestions on SpaceMaster Thesis Themes Masafumi HIRAHARA Space and Planetary Science Group, Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo (email: [email protected]) (skype: masa.hirahara) http://www.s.u-tokyo.ac.jp/en/ http://www.eps.s.u-tokyo.ac.jp/index_en.html Departments in Graduate School of Science Physics Astronomy Earth and Planetary Science (EPS) Chemistry Biophysics and Biochemistry Biological Sciences Research Groups in Our Department Atmospheric and Oceanic Science Group Space and Planetary Science Group Earth and Planetary System Science Group Solid Earth Science Group Geosphere and Biosphere Science Group Introduction of myself • Solar-terrestrial physics (STP), Space (plasma) physics • Auroral and geospace/planetary explorations through satellites and spacecraft operations from ground-based sites • Developments of plasma/particle instruments and associated calibration facility for in-situ observation in space • Experimental/data analysis works for space plasma/particle observations 9 Today I am a representative of three research groups; two in Univ. Tokyo and one in ISAS/JAXA. 1. Space instrumentation/data analysis in Hongo of Univ. Tokyo 2. Planetary research in Kashiwa of Univ. Tokyo 3. Satellite component development in Sagamihara of ISAS/JAXA Solar wind plasma stream and interplanetary magnetic field (Expansion of solar corona) Terrestrial upper atmosphere and intrinsic magnetic field Mercury’s magnetospheric formation and acceleration of space plasma particles due to interaction between solar wind and Mercury’s Intrinsic magnetic field Mercury magnetospheric exploration mission Atmospheric escape/evolution and climate change due to direct interaction between solar wind and Martian ionosphere Solar-Terrestrial Environment Mercury Mars Sun Earth Geospace- magnetosphere Solar wind Radiation belt (Van Allen belt) Gespace-ionosphere Ring current Graduate School of Science (GSS), the University of Tokyo (UT) Main Island of Japan Central Area of Tokyo Central Tokyo Akihabara Univ. Tokyo In Hongo Area Campuses of Univ. Tokyo Hongo, Komaba, Kashiwa, Shirokane, Nakano
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Introduction of Graduate School of Science, the University of Tokyo and Associated
Institute (ISAS/JAXA)and
Suggestions on SpaceMaster Thesis ThemesMasafumi HIRAHARA
Space and Planetary Science Group,Department of Earth and Planetary Science,
Graduate School of Science, The University of Tokyo(email: [email protected]) (skype: masa.hirahara)
Departments in Graduate School of SciencePhysicsAstronomyEarth and Planetary Science (EPS)ChemistryBiophysics and BiochemistryBiological Sciences
Research Groups in Our DepartmentAtmospheric and Oceanic Science GroupSpace and Planetary Science GroupEarth and Planetary System Science GroupSolid Earth Science GroupGeosphere and Biosphere Science Group
Introduction of myself• Solar-terrestrial physics (STP), Space (plasma) physics• Auroral and geospace/planetary explorations through
satellites and spacecraft operations from ground-based sites
• Developments of plasma/particle instruments and associated calibration facility for in-situ observation in space
• Experimental/data analysis works for space plasma/particle observationsToday I am a representative of three research groups; two in Univ. Tokyo and one in ISAS/JAXA.
1. Space instrumentation/data analysis in Hongo of Univ. Tokyo2. Planetary research in Kashiwa of Univ. Tokyo3. Satellite component development in Sagamihara of ISAS/JAXA
Solar wind plasma stream and interplanetary magnetic field(Expansion of solar corona)
Terrestrial upper atmosphereand intrinsic magnetic field
Mercury’s magnetospheric formation andacceleration of space plasma particles due tointeraction between solar wind and Mercury’sIntrinsic magnetic field
Mercury magnetosphericexploration mission
Atmospheric escape/evolution and climatechange due to direct interaction between solar wind and Martian ionosphere
Solar-TerrestrialEnvironment
Mercury Mars
Sun
Earth
Geospace-magnetosphere
Solar wind
Radiation belt(Van Allen belt)
Gespace-ionosphereRing current
Graduate School of Science (GSS),the University of Tokyo (UT)
Main Island of Japan
Central Area of TokyoCentral Tokyo
Akihabara
Univ. TokyoIn Hongo Area
Campuses of Univ. TokyoHongo, Komaba, Kashiwa,Shirokane, Nakano
Graduate School of Science (GSS),the University of Tokyo (UT)
Main Island of Japan
Central Area of TokyoCentral Tokyo
Akihabara
Univ. TokyoIn Hongo Area
Hongo Campus of Univ. Tokyo
GSS of UT forSpaceMaster
Campuses of Univ. TokyoHongo, Komaba, Kashiwa,Shirokane, Nakano
In Hongo campus of Univ. Tokyo
Master Themes in Hongo of Univ. Tokyo• Construction and automation of ion/electron beam facility for
calibrating space plasma/particle instruments for BepiColomboMercury magnetosphere and future terrestrial/planetary explorations– 1 – 200 keV ion/electron beam line – Beam line profiling and calibration system control– Final calibration for BepiColombo high-energy ion sensor– A few eV – a few tens of keV ion beam line
• Design of suprathermal ion energy/mass spectrometers for future terrestrial/planetary explorations– Polar-ionosphere and Geospace explorations– Martian upper atmosphere and ionosphere exploration
• Data display/analysis system for auroral images and plasma particle data– Auroral imaging camera data from Reimei and ALIS– Google Earth or other visualization platform
SunSolar Wind
Auroral Camera
Geospace-Ionosphere
Aurora
Magnetometer
ORBITALS
Radiation BeltsRing Current
RBSP
ERG
RadarLidarHeater
International Geospace Observation Network
RESONANCE
KuaFu
LANLGOES
POES
Geospace-Magnetosphere
THEMIS
GeotailCluster II
AkebonoFAST
Reimei
FORMOSAT-5
CASSIOPE
Earth
Radiation Belts(Van Allen Belts)
Ring Current
Magnetosphere
Sun
Ionosphere
Solar Wind
PlasmaSheet
Geospace
plasmasphere
ring current
plasma sheet
inner belt outer belt
1 eV
100 keV
1 MeV
Space Plasma/Particle Energy Distributionin Geospace
LEP-i
MEP-i
HEP-i
1 keVLEP-e
MEP-e
HEP-e
XEP
10 MeV
ion(H+, He+, O+)
electron
Plasma/particle instrument package has to cover a wide energy range over more than 7 orders.
L=5 ReL=2 Re
TSP-i TSP-e
Altitude from Earth
Ene
rgy
Calibration Facility for Space Plasma/Particle Instruments~200-keV ion/electron beam line
IsolationTransformer
(200kV)High-voltage power supply (+50kV)
High-voltage power supply (+150kV)
Vacuum chamber
Vacuum pumps
Turntableand X-stage
Isolation tube with linear accelerator
Ionization source withmass separator and beam expander
Inside of clear room(GSS, UT)
outside of clear room(GSS, UT)
Air shower
Air shower
EU-Japan Joint Mercury Exploration Mission
0
2
4
6
8
10
0 500 1000 1500
55-keV_H^+_He^2+_He^+_N^+H^+He^2+He^+N^+
H^+
TOF-ch
0
2
4
6
8
10
12
14
0 500 1000 1500
110-keV_H^+_He^2+_He^+_N^+H^+He^2+He^+N^+
H^+
TOF-ch
Master Themes in Hongo of Univ. Tokyo• Construction and automation of ion/electron beam facility for
calibrating space plasma/particle instruments for BepiColomboMercury magnetosphere and future terrestrial/planetary explorations– 1 – 200 keV ion/electron beam line – Beam line profiling and calibration system control– Final calibration for BepiColombo high-energy ion sensor– A few eV – a few tens of keV ion beam line
• Design of suprathermal ion energy/mass spectrometers for future terrestrial/planetary explorations– Polar-ionosphere and Geospace explorations– Martian upper atmosphere and ionosphere exploration
• Data display/analysis system for auroral images and plasma particle data– Auroral imaging camera data from Reimei and ALIS– Google Earth or other visualization platform
Auroral emission and particle observations by ReimeiEmission-particle simultaneous measurements with high time/spatial resolutions
Launch August 23 in 2005 as piggy-back by a Dnepr rocketfrom the Baikonur Cosmodrome in Kazakhstan
Titan atmosphere Polycarbonate impacting Cu at 6km/s
Projectile
Research Approaches
•Hypervelocity Impact experiments–Degassing experiments and chemical analysis–High-speed spectroscopy
• Instrument development–LIBS (laser-induced breakdown spectroscopy)–TOF MS (Time-of-flight mass spectrometer)
•Data analysis–Development of spectral data analysis algorithms.–Image and spectral analysis of mid-IR data from AKARI satellite and the Subaru telescope.
Research Approaches
2-stage light gas gun@ISAS Laser gun@Osaka Univ.
AKARI Satellite Subaru telescope
LIBS system@Kashiwa
Research Themesfor SpaceMaster Program
in Sagamihara of ISAS/JAXA
Hirobumi SaitoInstitute of Space and Astronautical Science (ISAS)
Institute of Space and Astronautical Science (ISAS),Japan Aerospace Exploration Agency (JAXA)
Main Island of Japan
Sagamihara
~30 km
Hongo CampusUniv. Tokyo
ISAS/JAXA
Institute of Space and Astronautical Science (ISAS),Japan Aerospace Exploration Agency (JAXA)
~30 km
ISAS/JAXA
ISAS/JAXA
ISAS/JAXA Institute of Space and Astronautical Science (ISAS),Japan Aerospace Exploration Agency (JAXA)
(http://www.isas.jaxa.jp/e/index.shtml)National Space Institutes in the world• US: NASA (National Aeronautics and Space Administration) • EU: ESA (European Space Agency)• Japan: JAXA (Japan Aerospace Exploration Agency)• Russia: RFSA (Russian Feredal Space Agency) / Roskosmos• China: CNSA (China National Space Administration)• Korea: KARI (Korean Aerospace Research Institute)• Taiwan: NSPO (National Space Organization)• India: ISRO (Indian Space Research Organization)• Canada: CSA (Canadian Space Agency)• Sweden: SNSB (Swedish National Space Board)• UK: BNSC, France: CNES, Germany: DLR, Italy: ASIBrazil: INPE
Research Themes for SpaceMaster ProgramHirobumi Saito Lab. at ISAS/JAXA
1. Automated Ground Operation System
for Micro Satellite REIMEI
2. Compensation Method of Satellite Fiber
Optical Gyroscope with “Shupe” Effect
3. GPS Receiver for Spinning Rocket
4. High Speed Data Communications for
Small Satellite
1.Automated Ground Operation System for Micro Satellite REIMEI
- We have operated micro satellite REIMEI from small tracking station at our laboratory.
- Scientists at remote area send their observation plans.
- At tracking station, plans are integrated and verified nearly automatically.
- At present we are constructing automatedsystem for satellite tracking.
Outline of INDEX (REIMEI)
160W (MAX)PowerTechnologyValidation
Engineering Mission
Aurora ObservationScienceMission
72 kgMass
72 x 62 x 62cm3Size
Outline of INDEX (REIMEI) Contd.
One Year PassedMission Life
Near Sun Synchronous(608 x 655 km)
Orbit24/8/2005, from BaikonurLaunch Date
$ 4 million + our salaryCost
Dnepr RocketLaunch Vehicle
- Three-Axis Controlledw/ Bias-Momentum
- Magnetic Control- Accuracy : 0.05deg
Attitude Control
ISAS/JAXA Sagamihara Campus Station• The station has an antenna of 3 meter
in diameter on the roof of the main building.
• Downlink: 131kbps* / Uplink: 1kbps• Orbit determination is based on:
– one-way doppler– TLE information– onboard GPS receiver (mission)
• The REIMEI operation team consists of young researchers, engineers, and students. Most operation software and tools are developed by themselves and a venture software house.>> Flexible operation!!!
*The onboard S-band transmitter (STX) is in the high-power mode. The mode is limitedly used when the satellite faces a critical situation.
Operation / Ground StationPhotos during the REIMEI operation
The REIMEI project has received a technical award from the Japan
society for aeronautical and space sciences in Jan., 2010.
2. Compensation Method of Satellite Fiber Optical Gyroscope with Shupe Effect
- Fiber optical gyroscopes (FOG) are suitablefor small satellite attitude control sensors.
- Bias angular rate of FOG due to temperaturevariation (“Shupe” effect) degrades FOG performances.
- We study on the compensation method of FOG “Shupe” effect by means of temporal measurement of temeperature.
FIBER OPTICAL GYRO with TEMPERATURE CONTROL
Commercial FOG(JAE JG-34)
Mass 1axis 140g Radiation 15 kradVibration 20GrmsShock 50G, 11msBias Stability is Critical
0.1[deg/h] with temp. cntl.
Measurement System of FOG Bias Rate due to “Shupe” Effects
3. GPS Receiver for Spinning Rocket
- GPS receivers for spinning rocket are
developed with antenna diversity techniques.
- Software receiver algorithm is proposed and
investigated by means of simulations.
- The algorithm will be implemented in the GPS
hardware.
Background• Cost effective GPS receivers for the
next-generation solid motor launchers and sounding rockets of ISAS/JAXA– Precise payload insertion– Redundant flight safety
Air conditioner, TV, small refrigerator, desk/chair, bed with linens, toilet and shower with small bathtub in 15 m2
• Common kitchen, clothes mashers/ driers available anytime
• Cafeteria open for lunch at weekday
• Shop open for 9:30-16:30 at weekday
Interview through skype or TV conference system using internet
Before mutual decision/agreement to study together in Japan for master thesis subject, a remote interview between SpaceMaster students and Japanese groups is preferable.
Please contact to Masa Hirahara and the professor by whom you wish to be supervised via email.
1. Masa Hirahara (Space Physics in Hongo of Univ. Tokyo)email: [email protected]: masa.hirahara
2. Seiji Sugita (Planetary Research in Kashiwa of Univ. Tokyo)email: [email protected]
3. Hirobumi Saito (Satellite Subsystem in Sagamihara of ISAS/JAXA)email: [email protected]