Gianpiero Tagliaferri – INAF/OABr XIPE – ESA/M4 -Roma 05-11-14 Development of grazing-incidence...

transcript

Gianpiero Tagliaferri – INAF/OABrXIPE – ESA/M4 -Roma 05-11-14

Development of grazing-incidence X-ray optics @ INAF/OAB and proposed optics for

G. Tagliaferri, D. Spiga, G. Pareschi, et al.

INAF – Osservatorio Astronomico di Brera

CNR - Milano

SPECTRUM X-Gamma

WFXT WFXT FeasibilitFeasibility Studyy StudySimbol-X design,

study and development eROSITA

Beppo-SAX soft X-ray (0.1 – 10 keV) concentrators

GRB970228

• Wolter I double-cone approx. – Au coating

• 4 modules – 30 shells/mod.

• F.L. = 180 cm Max diam = 16.1 cm

• Aeff @ 1 keV = 85 cm2 /module

• HEW= 60 arcsec (corresponding to the double-cone geom. aberration!)

JET-X (optics ready since1996) / SwiftXRT(2004) optics

Source separation: 20”

• Wolter I profile – Au coating (pathfinder of XMM)

• 2 mod. (JET-X) / 1 mod (Swift) – 12 shells/mod.

• F.L. = 350 cm - Max diam = 30 cm

• Aeff @ 1 keV= 150 cm2 /module

• HEW= 15 arcsec

SWIFT-XRT Layout XRT mating with Swift spacecraft

The optic wheel necessary to mount the mirror

modules

POLARIX

To verify the imaging capabilities of thin Ni electroformed mirrors, we realized a 0.13 mm Au coated shell exploiting the largest JET-X mandrel

the thickness has been diminished of a factor 8.58.5 with respect JET-X/SWIFT

Fabrication of a thin (130 Fabrication of a thin (130 m) MS from the largest JET-X mandrelm) MS from the largest JET-X mandrel

= 30 cm Height = 60 cmFocal Length = 3.5 m Thickness = 0.13 mm Mirror mass = 660 g

• diam. = 30 cm

• thickness = 130 m

X-Ray test @ Panter-MPE (July ’02) - E = 1.5 keVE = 1.5 keV

X-ray imaging test of a thin JET-X mirror shell (July X-ray imaging test of a thin JET-X mirror shell (July ‘‘02)02)

• wall thickness 8.5 times less than JET-X

HEWHEWmeasmeas = 25 arcsec = 25 arcsec

Multilayer coated Ni mirror shells Multilayer coated Ni mirror shells tested at Pantertested at Panter

shell 295

HEW (arcsec)Energy (KeV)

1 keV 40 keV

Proposed new Mirror design for XIPE

• 3-mirror modules with FL=3.5 m

• 27 shells with the same thickness as for NHXM,

diameter min=183 mm, max=400 mm

• Electroformed in Ni (or NiCo) with Ir+C coating

• Total weight of 1 MM is ~40 kg (shells 30kg, 30%

structure, total for 3MM=120 kg)

Proposed new Mirror design for XIPE

CONCLUSIONS

• 3 MMs with ~1400 cm2 at 1-3 keV and 750 cm2 at 8 keV

• Same shell properties as the ones developed for the

Simbol-X & NHXM programs

• Same technology and integration scheme used for

BeppoSAX, XMM-Newton, Swift, eROSITA, so TRL≥6?

Gianpiero Tagliaferri – INAF/OABr XIPE – ESA/M4 -Roma 05-11-14 Development of grazing-incidence...

Documents