JEMEUSO mission Astronomy with UHECRs - PowerPoint PPT Presentation

1 / 28
About This Presentation
Title:

JEMEUSO mission Astronomy with UHECRs

Description:

JEMEUSO mission Astronomy with UHECRs – PowerPoint PPT presentation

Number of Views:80
Avg rating:3.0/5.0
Slides: 29
Provided by: mtes2
Category:

less

Transcript and Presenter's Notes

Title: JEMEUSO mission Astronomy with UHECRs


1
JEM-EUSOmissionAstronomy with UHECRs
  • Masahiro Teshima
  • Max-Planck-Institute for Physics
  • For JEM-EUSO collaboration

2
Proposal was submitted to JAXA (Japanese space
agency) AO for second phase ISS utilization
program
Official Proposal to JAXA
Supplements
30 pages
82 pages
3
Physics 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

4
Candidates for UHECR accelerator
A.G.N.
GRB
Radio Galaxy Lobe
5
UHECR Propagation in our Galaxy
  • Deflection angle 1 degree at 1020eV
  • Astronomy by hadronic particles?

6
Full sky map of deflection angles
By K.Dolag, D.Grasso, V.Springel, and I.Tkachev
7
Matter (90Mpc) and Galaxies(45Mpc)
By A.Kravtsov
8
Cosmic Ray Energy Spectrum
9
(No Transcript)
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
11
EUSO 300 x AGASA 10-50 x Auger EUSO
(Instantaneous) 3000-15000 x AGASA 100-500 x
Auger
JEM-EUSO tilt-mode
AGASA
12
Astronomy with UHECRs JEM-EUSO
Matter (lt90Mpc), Galaxies (lt45Mpc) by A.Kravtsov
X30 Auger South UHECRs 2x106km2sr year UHE ? 20
T-Ton year
13
Configurations of JEM-EUSO in Launch and Deployed
phases
14
JEM-EUSO in HTV
15
Acceptance and Exposure
PMMA ? CYTOP (X1.5) UBA MAPMT (X1.5) Line
integration trigger (x2.0)
16
Sensitivity for UHE Neutrino
17
EUSO Instrument
18
JEM-EUSO Focal Surface
19
QE Measurement for R7600U-200 UBA PMT (by
C.C.Hsu, MPI-Munich)
Q.E. peak 41
Q.E. peak 38
UBA(Ultra-Bialkali) photocathode
20
Air shower imaged data
simulation
20 events of 1020eV proton showers are
superimposed on the EUSO focal surface with 192
k pixels.
4
21
JEM-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

22
JEM-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

23
H-II, HTV (H-II Transfer Vehicle)
24
HTV, HTV prototype
25
(No Transcript)
26
(No Transcript)
27
Time 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

28
Thanks
Write a Comment
User Comments (0)
About PowerShow.com