EUSO BALLOON phase A review CNES, 2.2.2012
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Transcript of EUSO BALLOON phase A review CNES, 2.2.2012
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EUSO BALLOON phase A review CNES, 2.2.2012
Mechanical design of the instrument
approach for integration and tests
Peter von Ballmoos, IRAP Toulouse
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EUSO BALLOON instrument overview
data
processingPhoto
detection
optical
system
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Functional Block Diagram of EUSO-Balloon Instrument
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The birth of stratospheric ballooning and astroparticle physics
1912 The discovery of Cosmic Rays Victor Hess measures increasing radiation levels aboard a balloon gondola at up to ~ 5000 m
Scientific Ballooning and Space Science celebrate a centennial common history !
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Recent Cosmic-Ray & Particle Physics Instruments
ATIC
HEAT
CAPRICEMASS
TRACER
CREAM
TIGER
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1 part/m2/year
1 part/m2/s
Auger
200 km/h50 g
≈1026 nucleons
Le spectre des Rayons Cosmiques
1 part/km2/century!
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EUSO-BALLOON is a pathfinder mission for the Extreme Universe Space Observatory on-board the Japanese Experiment Module mission, and any future mission dedicated to observing Ultra-High Energy Cosmic-Rays from space
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precursor balloon instruments
1998 Milo2001 Milo2002 Milotransmedmoonless !
upward UV flux [photons m−2 sr−1 ns−1]
sea 310-450 < BaBy/Nightglow (?)
land ~ 800 300 ± 41
BaBy (It)
2000 Palestine2001 ASP 1 h2003 ASP ULDB … (…1 day, full moon)
Nigthglow (US)
2005 Sanrikupacific, clouds, then moon
- (Japan)
flights
single PM counts - NO TRIGGER / SIGNATURES
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objectives for EUSO BALLOON
Full scale end-to-end test JEM-EUSO' s key technologies and instrumentation
A-level (technology demonstrator): - the entire PDM, its PMT's, ASIC's, FEE, Trigger, HV power supplies, HV switches
- onboard hard- and software algorithms for triggering and recognition airshowers
B-level (cosmic ray acquisition and background study)- experimental confirmation of the effective background below 40 km
- acquisition of 2.5 s frames, ground-pixels representative for JEM-EUSO
- test and adjust trigger and switching algorithms, observational modes
- testing of the acquisition capability of the IR camera (TBC)
C-level (precursor mission) :- 1st detection of air-showers by looking down from the edge of space
- detection of laser induced events from space …
"fringe benefits" of EUSO-BALLOON
- balloon triggers decisive steps in TRL levels in subsystems crucial for JEM-EUSO
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Mission requirements on A-level (technology demonstrator)
[MRA1]
payload is representative of the JEM-EUSO acquisition module and optics
- Photodetector module + Data Processing Components
- 3 Fresnel lenses
- HV (switch) systems must be able to work at float, this is at 3 mbar
[MRA2]
flight data recording at float level over land for
- 3 h (TBC) during moonless part of the night
- 3 h (TBC) during a moonlit phase (< 25 (TBC) % full).
absolute minimum : 2 hour (TBC) during the night with a <25% (TBC) full moon.
[MRA3]
flight data at float level include background enhancements due to city lights etc…
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objectives for EUSO BALLOON
Full scale end-to-end test JEM-EUSO' s key technologies and instrumentation
A-level (technology demonstrator): - the entire PDM, its ASIC's, the FEE, Trigger, HV power supplies, HV switches
- onboard hard- and software algorithms for triggering and recognition airshowers
B-level (cosmic ray acquisition and background study)- experimental confirmation of the effective background below 40 km
- acquisition of 2.5 s frames, ground-pixels representative for JEM-EUSO
- test and adjust trigger and switching algorithms, observational modes
- testing of the acquisition capability of the IR camera (TBC)
C-level (precursor mission) :- 1st detection of air-showers by looking down from the edge of space
- detection of laser induced events from space …
"fringe benefits" of EUSO-BALLOON
- balloon triggers decisive steps in TRL levels in subsystems crucial for JEM-EUSO
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Mission requirements on B-level (real data and background)
experimentally confirm the effective background below 40 km
acquisition of JEM-EUSO type data,
adjust the trigger algorithms with real data
simulate "groundspeeds" comparable to the ~ 7 km/s of the ISS
[MRB1]
2nd flight : fill in the B-level requirements not yet fulfilled in first flight
•1st priority : over ocean / moonless (SRB1a)
•2nd priority : over ocean / moon (SRB1b)
•3rd priority : over land / moonless (SRB1c)
•4th priority : over land, moon (SRB1d)
launch date shall allow to observe at least 2h (TBD) at a float level of 3 mbar.
[MRB2]
Testing the operation of a prototype Infrared Camera on the EUSO-Balloon gondola
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THE HV switches in JEM-EUSO & EUSO BALLOON
~ 430 km
40 km
~ 7 km/s
< 0.1 km/s
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the task of the high voltage switches …
~ 7 km/s
JEM-EUSO FOV
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the task of the high voltage switches …
~ 7 km/s
EUSO BALLON FOV
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Number and date of required balloon flights
[SRD]
A first flight (level A) should take place no later than summer 2013
to be of direct use for JEM-EUSO.
[SRE]
further flights are needed at > 3 months interval until all level B reqs are fulfilled
science flights (level C) may take place in 2014 and later,
as they present an important goal in their own right - beyond JEM-EUSO.
Operational requirements
[MRF]
downlink rate : 1.3 Mbits/sec (TBC - SIREN / NOSYCA compatible)
[MRG]
uplink rate : < 50 kb/s (TBC - SIREN / NOSYCA compatible)
Mission Planning and Operational Requirements
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objectives for EUSO BALLOON
Full scale end-to-end test JEM-EUSO' s key technologies and instrumentation
A-level (technology demonstrator): - the entire PDM, its ASIC's, the FEE, Trigger, HV power supplies, HV switches
- onboard hard- and software algorithms for triggering and recognition airshowers
B-level (cosmic ray acquisition and background study)- experimental confirmation of the effective background below 40 km
- acquisition of 2.5 s frames, ground-pixels representative for JEM-EUSO
- test and adjust trigger and switching algorithms, observational modes
- testing of the acquisition capability of the IR camera (TBC)
C-level (precursor mission) :- 1st detection of air-showers by looking down from the edge of space
- detection of laser induced events from space …
"fringe benefits" of EUSO-BALLOON
- balloon triggers decisive steps in TRL levels in subsystems crucial for JEM-EUSO
![Page 18: EUSO BALLOON phase A review CNES, 2.2.2012](https://reader031.fdocuments.in/reader031/viewer/2022032206/56813251550346895d98d188/html5/thumbnails/18.jpg)
Mission requirements on C-level (precursor mission)
goal : perform first detection of air-showers by looking downward from the edge of space for CR's of energy E>1018 eV. The rate of such events is estimated to be ~ 0,05 ev/h (see talk by Mario Bertaina).
[MRC1]
Long duration flight operation (≥ 50 hours at night, TBC) of the EUSO-Balloon instrument in trigger mode and in low background configuration. Altitude loss down to 35 (TBC) km is acceptable after 3 day/night transitions.
[MRC2]
Measure temperature/altitude of cloud cover with the Infrared Camera
[MRC3]
Fly a co-aligned laser on the gondola; generate laser induced events during taged data acquisition.
[MRC4]
Choose launch date to allow for a part of the flight over a high reflectivity surface (clouds, snow ...)
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what sources are accelerating UHECR's ?what is the acceleration-mechanism ?
prepare JEM-EUSO
with EUSO-BALLON
astrophysics with very high particles
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=~= d____Rgyro
dB___ E
d ______1 Mpc
B ______10-9 G
E_________3 x 1020 eV
___0.1o ~=
[ [ ]]
astronomy with protons ?
deviationd distanceRgyro ryro-radiusB magnetic fieldE proton energie
how to know where hey came from ?
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Fermi acceleration
black hole
accretion disk
jetsshock front
Active Galactic Nuclei
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precursor mission ?
With an optics offering a 8° FOV, it appears that we can expect to see 2 or 3 showers during a 10h balloon flight (TBC)
see Mario Bertaina's talk
=> 1st detection of air-showers by looking down from the edge of space
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balloons as means for R&D and training
experience
ideas
enthusiasm
- training of future PI's, mission scientist and project managers
and if you're quick (and lucky), you may snatch a mayor result before the satellite with your new technology is ready to fly
need "light" projects – i.e.- timescale ≈ PhD thesis- paper mass << payload mass
=> quick, cheap and … not without risk ….
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JEM-EUSO
On the Japanese module of the International Space Station
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UV nigthglow
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PARTICLE PHYSICS BIRTH WAS DUE TO COSMIC RAYS
Hesse, Wulf, Wilson, Anderson, Bothe, Kohlorster, Millikan,
Blackett, Skobeltsyn, Rochester, Butler, Rossi, Pancini ,
Conversi, Powell, Occhialini ……
Advent of accelerators
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PHASE A REVIEW - REHEARSAL FOR EUSO- BALLOON
* Welcome, Objectives for the day, General guidelines for the review
* Presentation of JEM EUSO P. PICOZZA - 15 min (+10 min)
* Presentation of EUSO-Balloon P. VON BALLMOOS - 20 min (+10 min)
* Performance aspects of the instrument M. BERTAINA - 15 min (+10 min)
* Organization for the development A. SANTANGELO (15 min (+10 min)
* PDM description M. CASOLINO - 15 min (+10 min)
* EC UNIT description P. BARILLON - 30 min (+20 min)
* HV description, development plan PH. GORODEZTKY - 10 min (+10 min)
* Flight electronics description G.OSTERIA - 30 min (+20 min)
* Lenses description PH. GORODEZTKY - 10 min (+10 min)
* Mechanical design of the instrument P. VON BALLMOOS - 15 min (+10 min)
* IR camera MD RODRIGUEZ FRIAS - 15 min (+10 min)
* Planning S. DAGORET - 15 min (+10 min)
* 2nd iteration on the presentation & possible questions
* Wrap-up / conclusion on the review
* beyond phase A - what's next ? - doing it - status of US involvement etc
* AOB
* where we go for dinner