Title: JEMEUSO mission Astronomy with UHECRs
1JEM-EUSOmissionAstronomy with UHECRs
- Masahiro Teshima
- Max-Planck-Institute for Physics
- For JEM-EUSO collaboration
2Proposal was submitted to JAXA (Japanese space
agency) AO for second phase ISS utilization
program
Official Proposal to JAXA
Supplements
30 pages
82 pages
3Physics Objectives of JEM-EUSO
- Origin of Ultra High Energy Cosmic Rays
- Energy Spectrum of cosmic rays above 3x1019eV
- GZK cutoff or extension
- Beyond GZK energy
- Arrival directions of cosmic rays above 1020eV
- Matter/AGN density distribution within 50-100Mpc
- Number of events above 1020eV gt Number of sources
(10-100) - To establish sources, we needs at least 10
events/sources - Fundamental physics
- Look for exotic origin (gamma rays, neutrinos)
- Neutrino cross-section (extra-dimension, etc)
- Test of Lorentz invariance at ?1011
- Earth Science
- Study of atmospheric night-glow, plasma-discharge
and lightning
4Candidates for UHECR accelerator
A.G.N.
GRB
Radio Galaxy Lobe
5UHECR Propagation in our Galaxy
- Deflection angle 1 degree at 1020eV
- Astronomy by hadronic particles?
6Full sky map of deflection angles
By K.Dolag, D.Grasso, V.Springel, and I.Tkachev
7Matter (90Mpc) and Galaxies(45Mpc)
By A.Kravtsov
8Cosmic Ray Energy Spectrum
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10 JEM-EUSO Telescope on ISS
JEM-EUSO Telescope will be attached to Exposure
Facility of Japanese Experiment Module (JEM/EF)
of ISS in 2012- 2013
Vertical Mode
Tilted Mode
Larger effective area (x5) with 35tilt
11EUSO 300 x AGASA 10-50 x Auger EUSO
(Instantaneous) 3000-15000 x AGASA 100-500 x
Auger
JEM-EUSO tilt-mode
AGASA
12Astronomy with UHECRs JEM-EUSO
Matter (lt90Mpc), Galaxies (lt45Mpc) by A.Kravtsov
X30 Auger South UHECRs 2x106km2sr year UHE ? 20
T-Ton year
13Configurations of JEM-EUSO in Launch and Deployed
phases
14JEM-EUSO in HTV
15Acceptance and Exposure
PMMA ? CYTOP (X1.5) UBA MAPMT (X1.5) Line
integration trigger (x2.0)
16Sensitivity for UHE Neutrino
17EUSO Instrument
18JEM-EUSO Focal Surface
19QE Measurement for R7600U-200 UBA PMT (by
C.C.Hsu, MPI-Munich)
Q.E. peak 41
Q.E. peak 38
UBA(Ultra-Bialkali) photocathode
20Air shower imaged data
simulation
20 events of 1020eV proton showers are
superimposed on the EUSO focal surface with 192
k pixels.
4
21JEM-EUSO Level-0 Specification 1
- Science Requirements
- More than 1000 events above 71019 eV
- Determine arrival direction to a few degrees or
less, and identify the source - Clarify the entire structure of the trans-GZK(5 x
1019lt E lt 1021 eV) - Observational Requirements(e.g. E1020eV, Zenith
angle 60?) - Observational area ? 7105 (H/400 km)2 km2 sr
- Accuracy of arrival direction ? 2.5
- Energy resolution ? 30
- Xmax Resolution ? 120 g cm2
- Requirements of the Instruments
- Detection Efficiency ? 10
- Loss of efficiency ? 30 than specification
during operations - Lifetime ? 2 yrs (and 2 yrs storage time before
launch) - Accuracy of attitude control ? 0.05?, allowing
off-line correction) - (absolute) clock and timing accuracy ? 1 ms
22JEM-EUSO Level-0 Specification 2
- Spec of the Instruments
- Field of View Wide-field 30 degree
- Aperture Diameter 2.5m
- Optical bandwidth 330-400nm
- Angular Resolution 0.1 degree
- Pixel Size ? 4.5mm
- Number of Pixels 2.0105
- Pixel Size at the ground 750m
- Duty Cycle 20
- Observational Area 1.9105 km2 and x 3 - 5
larger by tilt - Parameters of Mission
- Time of launch 2012-13
- Operation Period 3 years (2 - 5) years
- Launching Rocket H2B
- Transportation to ISS non pressurized
Cargo-Carrier of H2 Transfer Vehicle - Site to Attach Japanese
Experiment Module/ Exposure Facility E2 - Mass 1880 kg
- Power 1031 W (operative) 344 W (non-operative)
- Data Transfer Rate 360 kpbs
23H-II, HTV (H-II Transfer Vehicle)
24HTV, HTV prototype
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27Time schedule and etc.
- Time schedule
- We will hear the judgment from JAXA this May we
are very optimistic - After two years of Phase-A study, there is a
critical review of the mission - In 2009-2012, JEM-EUSO will be build
- Launch is expected in 2012 or 2013, as a program
in the second phase of ISS utilization - Physics
- More focus on the Astronomy with UHECRs
(gt1000events above GZK cutoff, 1020eV) - Deliver the skymap of UHECRs with 100010,000
events above 1020eV
28Thanks