Testing ATHENA optics: a new measurement standard at the PANTER x-ray test facility

Bradshaw, Miranda; Burwitz, V.; Hartner, Gisela; Langmeier, A.; Vacanti, Giuseppe; Collon, Maximilien J.; Barrière, Nicolas M.

doi:10.1117/12.2599664

Cited by 8 publications

(11 citation statements)

References 7 publications

(9 reference statements)

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“…The effective area is determined to be 0.26 ± 0.02 cm 2 at the peak of the vignetting curve. These HEW and effective area compare numbers are identical with numbers obtained in March 2020 with TRoPIC using 100%: HEW = 2.9 ± 0.1 arcsec [15] and the effective area 0.25 ± 0.02 cm 2 . Furthermore, the Azimuthal scans show that PSF as a function of the azimuthal position has not changed.…”

Section: Spo "Measurement Standard" Resultssupporting

confidence: 82%

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Characterising x-ray optics at PANTER for the NewATHENA mission and x-ray optic test facilities

Burwitz,

Hartner,

Müller

et al. 2023

Optics for EUV, X-Ray, and Gamma-Ray Astronomy XI

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At the PANTER x-ray test facility of the Max-Planck-Institute for extraterrestrial Physics, x-ray optics for future missions are developed, tested, and calibrated. For the ESA mission NewATHENA many campaigns to test individual Silicon Pore Optic (SPO) mirror modules have been performed to monitor the different aspects of the performance improvement in terms of Half Energy Width (HEW) of the image Point Spread Function (PSF) and the effective area of the optic. Support is also provided for new x-ray optic test facilities such as the recently commissioned BEaTriX facility for characterizing individual SPO mirror modules and the future VERT-X facility designed to test and calibrate the complete NewATHENA mirror by scanning it with a small parallel x-ray beam. The optics (such as parabolas, Wolter-1) needed for the facilities are calibrated at PANTER using a parallel beam generated with a Fresnel Zone-Plate optimized for 1.5 keV. The results of the recent remeasuring of the SPO “measurement standard” optic is presented here. The objective of this test aimed to confirm the sustained stability of the optical component itself, along with variations between BESSY II in Berlin, PANTER in Neuried, both located in Germany, and the newly finished Minerva beamline at ALBA in Barcelona, Spain. The outcomes from PANTER validate the constancy of the "measurement standard" optic, affirming that crucial parameters, notably the Half-Energy Width (HEW) of the Point Spread Function (PSF), remain unaltered.

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Section: Spo "Measurement Standard" Resultssupporting

confidence: 82%

“…After completion, the "measurement standard" optic was brought to PANTER so that it could be tested under full illumination. The original PANTER measurements took place in March 2020 [15]. The setup in PANTER and the coordinate system used is shown in Figure 2.…”

Section: The Spo "Measurement Standard" Opticmentioning

confidence: 99%

Characterising x-ray optics at PANTER for the NewATHENA mission and x-ray optic test facilities

Burwitz,

Hartner,

Müller

et al. 2023

Optics for EUV, X-Ray, and Gamma-Ray Astronomy XI

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“…The Beam Expander Testing X-ray facility has been built at INAF-Brera Astronomical Observatory to sequentially perform the X-ray acceptance tests, in terms of Point Spread Function (PSF), Half Energy Width (HEW) and Effective Area (EA), of the NewATHENA SPO MMs. The most existing facilities for the AIT of a single SPO MM (such as PANTER 4 ) create a divergent beam by placing the source at very large distance to simulate astronomical sources at an infinite distance; however, this entails large volumes to be evacuated, non-infinite distance of the source, which determines beam divergence. Another reference facility is BESSY II; 5 this synchrotron generates a monochromatic and collimated pencilbeam to scan the optic aperture, which however requires a PSF reconstruction.…”

Section: Introductionmentioning

confidence: 99%

X-ray beam diagnostics at the BEaTriX facility

Sisana,

Spiga,

Salmaso

et al. 2023

Optics for EUV, X-Ray, and Gamma-Ray Astronomy XI

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In the framework of NewATHENA x-ray space telescope, BEaTriX (Beam Expander Testing X-ray) is the novel ground support equipment designed to perform the Silicon Pore Optics Mirror Modules (SPO MMs) acceptance tests in terms of point spread function and effective area. As of today, the facility built at INAF-Brera Astronomical Observatory in Merate has a first operative beamline at the energy of 4.51 keV. The 170 mm × 60 mm x-ray beam, created by an innovative optical setup, is able to fully illuminate a complete SPO MM in a single exposure with a parallel and monochromatic X-ray beam. The optical chain includes a paraboloidal mirror, with an x-ray source in its focus, that collimates and expands vertically the beam, a monochromatic stage composed by a set of symmetrically cut silicon crystals (the Channel Cut Crystals), and an asymmetrically cut silicon crystal (the Beam Expander) that expands the beam horizontally. To achieve the expected x-ray beam quality in terms of collimation, number of photons and uniformity, the BEaTriX optical components need to be properly aligned. The result of several measurements confirms the theoretical predictions on the behavior of each optical element. This paper describes the work performed to quantify the x-ray beam properties with the adoption of different types of detectors, and alignment sequence, providing the outlook for further optimizations.

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“…Conventional X-ray sources are used at the PANTER facility of MPE near Munich [5]. To obtain a low divergence beam, the source is placed at large distance from the optic to be tested: in the case of PANTER, the source is at the end of a 120 m long vacuum tube.…”

Section: Introductionmentioning

confidence: 99%

X-ray tests of the ATHENA mirror modules in BEaTriX: from design to reality

Salmaso

Basso

Ghigo

et al. 2022

Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray

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The BEaTriX (Beam Expander Testing X-ray) facility is now operative at the INAF-Osservatorio Astronomico Brera (Merate, Italy). This facility has been specifically designed and built for the X-ray acceptance tests (PSF and Effective Area) of the ATHENA Silicon Pore Optics (SPO) Mirror Modules (MM). The unique setup creates a parallel, monochromatic, large X-ray beam, that fully illuminates the aperture of the MMs, generating an image at the ATHENA focal length of 12 m. This is made possible by a microfocus X-ray source followed by a chain of optical components (a paraboloidal mirror, 2 channel cut monochromators, and an asymmetric silicon crystal) able to expand the X-ray beam to a 6 cm × 17 cm size with a residual divergence of 1.5 arcsec (vertical) × 2.5 arcsec (horizontal). This paper reports the commissioning of the 4.5 keV beam line, and the first light obtained with a Mirror Module.

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Testing ATHENA optics: a new measurement standard at the PANTER x-ray test facility

Cited by 8 publications

References 7 publications

Characterising x-ray optics at PANTER for the NewATHENA mission and x-ray optic test facilities

Characterising x-ray optics at PANTER for the NewATHENA mission and x-ray optic test facilities

X-ray beam diagnostics at the BEaTriX facility

X-ray tests of the ATHENA mirror modules in BEaTriX: from design to reality

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