jw den herder 1 18/10/2004 science case main science drivers (comsic vision 2015-2025): super novae...
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JW den Herder1
18/10/2004
Science case
Main science drivers (comsic vision 2015-2025):
• Super Novae and the life cycle of matter
• Study of cluster evolution (physical state and chemical abundances) up to z=2
• Study birth and growth of supermassive BH at z~10
• Gravity in the strong field limit (relativisticaly broadened line)
• Matter under extreme conditions (near the surface of a NS)
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JW den Herder2
18/10/2004
Aeff E (keV) “) FoV (‘) t CR c/s
Cluster evolution 10 2 0.1-10 5 10 - -
BH evolution 10 - 0.1-40 2 20 - -
GR (Fe-K, AGN) 1@6 4 1-40 - - 100 104
EOS 10 2 0.1-15 - - 1-10 s 105
SNe 10 2 0.2-40 5 10 - 200
GRB ?
WHIM absorption 10 0.5– 2 0.1-10 - - - -
WHIM emission 10 1-2 0.1-2 - 20 - -
Cluster outskirts 10 1-2 0.1-10 - 20 - -
Cooling flows 1 2 0.1-10 2 – 5 3 - -
AGN dynamics 10 1-2 0.1-20 - - 100 104
Microquasars 1 5 0.3-20 2-5 - 1-10 s 106
GR (Fe-K, galactic) 1@6 5 0.3-20 - - 1-10 s 106
Stellar flares 10 3 0.2-10 - - 10 104
Cyrogenic 1 1@6 4@6 0.3-15 2-5 10-20
Cryogenic 2 10 1-2 0.1-3 2-5 5-10
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JW den Herder3
18/10/2004
Conclusions
• Science case
Need for 2nd cryogenic instrument optimized at low energies, energy resolution prime driver, then low energy cutoff (0.2-0.1), next countrate, and finally FoV
Redundancy is also an important driver
• Instrument development plan
Demonstrate capability to build cryogenic instrument for XEUS/Con-X in Europe
Concentrate on TES microcalorimeter (but not excluding others)
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JW den Herder4
18/10/2004
commonalities
parameter TES Magnetic STJ
Cooler X X No (He3)
Filters X X X
Instrument control unit X Different different
Analysis software X similar similar
Integration and testing X similar similar
X-ray testing X x X
Cryo harness X X X
Read-out sytem X X ? no
Magnetic field X X X
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JW den Herder5
18/10/2004
Prototype instrument requirements(not yet XEUS level)
optimize on energy resolution
parameter Requirements comments
Array size 5 x 5 Scalable to 32 x 32,
multiplexing 4 x 8 or
2 x 16
FDM range: 1 - 10 MHz
E range 0.2-3
R 500 @ 1 keV
QE ~ 0.5 Including filters and filling factor at Oxygen lines
Time resolution 5 sec Goal 1 sec
Count rate limit 150 Hz/pixel Pile-up < 10 %
Pixel size > 0.25 x 0.25 mm2
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JW den Herder6
18/10/2004
Instrument concept
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JW den Herder7
18/10/2004
Roadmap 1
Item Active interested comment
Cooler + control MSSL IASF/INFN Separate ESA contract
Filters (X-ray, UV) Finland ESA, Leicester
Instrument control unit open
Signal processing Leicester In CIS contract
EGSE open
Analysis software Spain, Helsinki
Integration and testing SRON MSSL, INFN/IASF Heidelberg (at component level)
X-ray testing Italy, Leicester
MPE(Panter)
Synchrotron beam: ESFR, Diamond, Soleil
Environmental testing Not yet
Calibration France
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JW den Herder8
18/10/2004
Roadmap 2
Item Active interested comment
Packaging detector, LC filters + squids on cold finger
MSSL
Magnetic field generation/shielding
MSSL
Cryo harness + EMI MSSL
TES array SRON/MESA INFN/IASF 5 x 5
FDM system SRON/VTT INFN/ISAF, JAXA
FDM: AC-bias SRON partner
FDM: LC filters Spain (TBD)
FDM: SQUID + baseband feedback
VTT/SRON INF
FDM demux MPE ? ASIC
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JW den Herder9
18/10/2004
Key issues for XEUS
Item Active Interested
Excess noise SRON Leicester, INFN (Gatti)
Pixel size limitations SRON, JAXA
Selection of absorber material (low C)
SRON, INFN (Gatti) Spain
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JW den Herder10
18/10/2004
Next steps
• Science case: justification for 2nd instrument optimized at low energy Bleeker, Barcons
Compare to gratings, low E cut-off, Astro-E2,Be realistic, use cosmic vision
• Prototype instrument development plan de Korte + others• High level system overview, technology risks
and desired/required qualification level + technology risks
• Face-to-face meetings (where appropriate)• Funding (seek funding at national level)• Explore potential Japanese interest (ISAS)• Coordinate developments with ESA (payload
definition document etc)
• Identify consequences of magnetic micro calorimeter in the prototype
• Next meeting (spring 2005)
• Coordination/progress monitoring den Herder