euso balloon phase a review cnes, 2.2.2012
DESCRIPTION
EUSO BALLOON phase A review CNES, 2.2.2012. Mechanical design of the instrument approach for integration and tests Peter von Ballmoos, IRAP Toulouse. EUSO BALLOON instrument overview. data processing. optical system. Photo detection. - PowerPoint PPT PresentationTRANSCRIPT
EUSO BALLOON phase A review CNES, 2.2.2012
Mechanical design of the instrument
approach for integration and tests
Peter von Ballmoos, IRAP Toulouse
EUSO BALLOON instrument overview
data
processingPhoto
detection
optical
system
Functional Block Diagram of EUSO-Balloon Instrument
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 !
Recent Cosmic-Ray & Particle Physics Instruments
ATIC
HEAT
CAPRICEMASS
TRACER
CREAM
TIGER
1 part/m2/year
1 part/m2/s
Auger
200 km/h50 g
≈1026 nucleons
Le spectre des Rayons Cosmiques
1 part/km2/century!
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
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
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
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…
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
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
THE HV switches in JEM-EUSO & EUSO BALLOON
~ 430 km
40 km
~ 7 km/s
< 0.1 km/s
the task of the high voltage switches …
~ 7 km/s
JEM-EUSO FOV
the task of the high voltage switches …
~ 7 km/s
EUSO BALLON FOV
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
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
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 ...)
what sources are accelerating UHECR's ?what is the acceleration-mechanism ?
prepare JEM-EUSO
with EUSO-BALLON
astrophysics with very high particles
=~= 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 ?
Fermi acceleration
black hole
accretion disk
jetsshock front
Active Galactic Nuclei
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
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 ….
JEM-EUSO
On the Japanese module of the International Space Station
UV nigthglow
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
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