spirou: a nir chelle spectropolarimeter for cfhtmain science drivers habitable exo-earths around...
TRANSCRIPT
SpIRou: a nIR échelle spectropolarimeter for CFHT
JF Donati, LATT
LATT: Donati, FouquéLAOG: Delfosse, Forveille, Bonfils, Bouvier, Ménard
LESIA: Catala, LellouchLAM: Moutou, Deleuil
OCA: Hill
Genève: Pepe, FigueiraCanada: Bohlender, Landstreet, Walker
Taiwan: Wang, Trung, LimUK: Cameron, Jardine, Gregory, Barnes
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main science drivers
habitable exo-Earthsaround low-mass stars
frequency of habitable exo-Earthsgiant planets around brown dwarfs
80% of stars within 10 pcout of reach of optical surveys
1000+ accessible targets 200+ nights/year for 5+ years
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main science drivers
habitable exo-Earthsaround low-mass stars
frequency of habitable exo-Earthsgiant planets around brown dwarfs
80% of stars within 10 pcout of reach of optical surveys
1000+ accessible targets 200+ nights/year for 5+ years
© E
SO/C
NRS
main science drivers
habitable exo-Earthsaround low-mass stars
frequency of habitable exo-Earthsgiant planets around brown dwarfs
80% of stars within 10 pcout of reach of optical surveys
1000+ accessible targets 200+ nights/year for 5+ years
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SO/C
NRS
main science drivers
habitable exo-Earthsaround low-mass stars
star/planet formation
frequency of habitable exo-Earthsgiant planets around brown dwarfs
80% of stars within 10 pcout of reach of optical surveys
1000+ accessible targets 200+ nights/year for 5+ years
embedded protostars/protodiscsbetter view @ nIR wavelengthsbetter sensitivity to mag fields
probing innermost regions (<1 AU)200+ accessible targets
50+ nights/year for 5+ years
© E
SO/C
NRS
main science drivers
habitable exo-Earthsaround low-mass stars
star/planet formation
frequency of habitable exo-Earthsgiant planets around brown dwarfs
80% of stars within 10 pcout of reach of optical surveys
1000+ accessible targets 200+ nights/year for 5+ years
embedded protostars/protodiscsbetter view @ nIR wavelengthsbetter sensitivity to mag fields
probing innermost regions (<1 AU)200+ accessible targets
50+ nights/year for 5+ years
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SO/C
NRS top priority CFHT instrument for PNPS & PNP
a scientific niche
existing instruments: narrow coverageinstrument resolution (slit) coverage (domain µm)
Phoenix/Gemini 75 K (O.17”) 0.02 (0.8-2.5)
NIRSPEC/Keck2 25 K (0.40”) 0.2 (0.9-5.5)
IRCS/Subaru 25 K (0.14”) 0.2 (1-3)
CRIRES/VLT 40 K (0.50”) 0.02 (1-5)
a scientific niche
existing instruments: narrow coverage
in construction or planned : no fibre/échelle & no spectropol
instrument resolution (slit) coverage (domain µm)
Phoenix/Gemini 75 K (O.17”) 0.02 (0.8-2.5)
NIRSPEC/Keck2 25 K (0.40”) 0.2 (0.9-5.5)
IRCS/Subaru 25 K (0.14”) 0.2 (1-3)
CRIRES/VLT 40 K (0.50”) 0.02 (1-5)
instrument resolution (feed) domain (µm) status
GIANO/TNG 50 K (O.50” slit) 0.9-2.5 2010
PRVS/Gemini 25 K (fiber) 0.9-1.8 abandoned
NAHUAL/GTC 25 K (0.18” slit) 0.9-2.4 not yet funded
SPIRou/CFHT 50 K (1.4” fiber) 0.9-2.4 2014
top performances0.9-2.4 µm, full coverage in 1 exp @ R=50K
15% throughput (telescope & detector included)SN=150 in 1hr @ mJ=12 & mK=11
polarimetric capabilities & high RV accuracy (1 m/s)
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instrument concept
a Cassegrain module image stabilisation, calibration & ADCachromatic dual-beam polarimeter
fiber feed to spectrograph
top performances0.9-2.4 µm, full coverage in 1 exp @ R=50K
15% throughput (telescope & detector included)SN=150 in 1hr @ mJ=12 & mK=11
polarimetric capabilities & high RV accuracy (1 m/s)
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instrument concept
a Cassegrain module
a cryogenic spectrograph
image stabilisation, calibration & ADCachromatic dual-beam polarimeter
fiber feed to spectrograph
injection module w/ image slicerdual-pupil bench-mounted spectrograph
cryogenic tank cooled @ 77 K
top performances0.9-2.4 µm, full coverage in 1 exp @ R=50K
15% throughput (telescope & detector included)SN=150 in 1hr @ mJ=12 & mK=11
polarimetric capabilities & high RV accuracy (1 m/s)
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SO/C
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instrument concept
preliminary design by P Rabou (2008)
dual-pupil bench-mounted spectrograph w/ 15 cm pupil2 parabolic off-axis collimators (1.2 m focal length)
R2 diffraction grating & prism-train Xdisperserfully-dioptric f/2 camera (32 cm focal length)
Hawaii-2 2kx2k detector w/ 18 µm square pixels
full spectral domain in single exp (0.98-2.4 µm)~50% peak throughput
spot diagram < 18 µm over 0.98-2.4 µm and 10° FoVvarious options for Xdisperser
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optics
preliminary design by P Rabou (2008)
dual-pupil bench-mounted spectrograph w/ 15 cm pupil2 parabolic off-axis collimators (1.2 m focal length)
R2 diffraction grating & prism-train Xdisperserfully-dioptric f/2 camera (32 cm focal length)
Hawaii-2 2kx2k detector w/ 18 µm square pixels
full spectral domain in single exp (0.98-2.4 µm)~50% peak throughput
spot diagram < 18 µm over 0.98-2.4 µm and 10° FoVvarious options for Xdisperser
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SO/C
NRS
optics
preliminary design by P Rabou (2008)
dual-pupil bench-mounted spectrograph w/ 15 cm pupil2 parabolic off-axis collimators (1.2 m focal length)
R2 diffraction grating & prism-train Xdisperserfully-dioptric f/2 camera (32 cm focal length)
Hawaii-2 2kx2k detector w/ 18 µm square pixels
full spectral domain in single exp (0.98-2.4 µm)~50% peak throughput
spot diagram < 18 µm over 0.98-2.4 µm and 10° FoVvarious options for Xdisperser
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SO/C
NRS
optics
to be studied @ OMP (2009 - if selected)
copied from GIANO2mx1.3m cylindrical stainless steel cryostat
optical bench/tank on isostatic hexapod systemfilled w/ LN2 (100 l) w/ pressure & temperature control
ultra-accurate RV stability
study modifications from GIANO resulting from different optical design
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cryomechanics
to be studied @ OMP (2009 - if selected)
copied from GIANO2mx1.3m cylindrical stainless steel cryostat
optical bench/tank on isostatic hexapod systemfilled w/ LN2 (100 l) w/ pressure & temperature control
ultra-accurate RV stability
study modifications from GIANO resulting from different optical design
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SO/C
NRS
cryomechanics
to be studied @ OMP (2009 - if selected)
copied from GIANO2mx1.3m cylindrical stainless steel cryostat
optical bench/tank on isostatic hexapod systemfilled w/ LN2 (100 l) w/ pressure & temperature control
ultra-accurate RV stability
study modifications from GIANO resulting from different optical design
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NRS
cryomechanics
core team
PI: JF Donati (LATT)project manager: D Kouach (OMP)
instrument scientist: X Delfosse (LAOG)system engineer: E Artigau (tbc)
optics: P Rabou (LAOG) & L Parès (LATT) cryogenics: M Bouyé (OMP) & P Feautrier (LAOG)
mechanics: G Gallou (LATT) & B Dubois (OMP)detector: SY Wang (TW)
control: M Dupieux (LATT) & S Baratchart (LMTG)reduction pipeline JF Donati (LATT) & X Delfosse (LAOG)
CFHT contact: G Barrick
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team
core team
PI: JF Donati (LATT)project manager: D Kouach (OMP)
instrument scientist: X Delfosse (LAOG)system engineer: E Artigau (tbc)
optics: P Rabou (LAOG) & L Parès (LATT) cryogenics: M Bouyé (OMP) & P Feautrier (LAOG)
mechanics: G Gallou (LATT) & B Dubois (OMP)detector: SY Wang (TW)
control: M Dupieux (LATT) & S Baratchart (LMTG)reduction pipeline JF Donati (LATT) & X Delfosse (LAOG)
CFHT contact: G Barrick
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team
+ 23p international science team
tentative schedule 2008: feasibility study (completed)2008 Dec: selection of 2+ projects for phase A
2009: phase A study2009 Dec: funding of 2- projects by CFHT
2010-2011: complete design study2012-2013: construction & AIT
2014: transport, commissionning & delivery
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agenda
tentative schedule 2008: feasibility study (completed)2008 Dec: selection of 2+ projects for phase A
2009: phase A study2009 Dec: funding of 2- projects by CFHT
2010-2011: complete design study2012-2013: construction & AIT
2014: transport, commissionning & delivery
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agenda
integration @ OMP in new lab