The TRILL project: increasing the technological readiness of Laue lenses

Ferro, L.; Virgilli, Enrico; Moita, M.; Frontera, F.; Rosati, P.; Guidorzi, C.; Ferrari, C.; Lolli, Riccardo; Caroli, E.; Auricchio, N.; Stephen, J. B.; Sordo, S. Del; Gargano, C.; Squerzanti, S.; Pucci, Mauro; Limousin, O.; Meuris, A.; Laurent, Philippe; Allaire, Hugo

doi:10.1117/12.2629872

Cited by 4 publications

(6 citation statements)

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“…After this period, we noted that the crystals’ position remained stable for at least 1 week, when we stopped the daily measurements. Very preliminary results of our assembled module were reported in a previous work 10 . The final sector was made by 11 crystals instead of 12 because the crystal 26B got detached from its original position due to an assembly mishap and left a white spot of cured glue on the quartz substrate (clearly visible in Fig.…”

Section: Data Analysis and Resultsmentioning

confidence: 75%

“…Very preliminary results of our assembled module were reported in a previous work. 10 The final sector was made by 11 crystals instead of 12 because the crystal 26B got detached from its original position due to an assembly mishap and left a white spot of cured glue on the quartz substrate (clearly visible in Fig. 6, which rendered it impossible to bond another crystal on the same position without risk of damage to the assembly).…”

Section: Data Analysis and Resultsmentioning

confidence: 99%

“…In addition, we included in the simulation a uniform random distribution of the curvature radius of the crystals, with a mean value of 39.7 m and a width of 1.0 m. These values were obtained from the measurements of the curvature radius of a sample of 82 bent crystals of Ge(220) specifically prepared for this project and measured at CNR-IMEM. 10 The set of 11 crystals used for this demonstration prototype is part of the same batch of samples. The assembly misalignment angles and curvature radius of each crystal were sampled from those random distributions.…”

Section: Simulationsmentioning

confidence: 99%

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Recent developments in Laue lens manufacturing and their impact on imaging performance

Ferro,

Virgilli,

Auricchio

et al. 2024

J. Astron. Telesc. Instrum. Syst.

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We report on recent progress in the development of Laue lenses for applications in hard X/soft gamma-ray astronomy. Here, we focus on the realization of a sector of such a lens made of 11 bent germanium crystals and describe the technological challenges involved in their positioning and alignment with adhesive-based bonding techniques. The accurate alignment and the uniformity of the curvature of the crystals are critical for achieving optimal X-ray focusing capabilities. We assessed how the errors of misalignment with respect to the main orientation angles of the crystals affect the point spread function (PSF) of the image diffracted by a single sector. We corroborated these results with simulations carried out with our physical model of the lens, based on a Monte Carlo ray-tracing technique, adopting the geometrical configuration of the Laue sector, the observed assembly accuracy, and the measured curvatures of the crystals. An extrapolation of the performances achieved on a single sector to an entire Laue lens based on this model shows that a PSF with a halfpower-diameter of 4.8 arcmin can be achieved with current technology. This has the potential to lead to a significant improvement in the sensitivity of spectroscopic and polarimetric observations in the 50 to 600 keV band.

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Section: Data Analysis and Resultsmentioning

confidence: 75%

Section: Data Analysis and Resultsmentioning

confidence: 99%

Section: Simulationsmentioning

confidence: 99%

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Recent developments in Laue lens manufacturing and their impact on imaging performance

Ferro,

Virgilli,

Auricchio

et al. 2024

J. Astron. Telesc. Instrum. Syst.

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“…Several R&D activities have been made in the past for increasing the maturity of the Laue lenses. Within the recent TRILL project [5], funded by ASI-INAF, CNR/IMEM (Parma) has optimised a method based on lapping one of the largest faces to provide the crystals the defined curvature. We have provided and qualified dozens of crystals by demonstrating the reproducibility of the crystal bending process at the nominal radius of 40 m (twice the FL).…”

Section: -Technical Development Activitiesmentioning

confidence: 99%

Opening the path to hard X-/soft gamma-ray focussing: the ASTENA-pathfinder mission

Virgilli¹,

Amati²,

Auricchio³

et al. 2023

Preprint

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Hard X-/soft gamma-ray astronomy is a crucial field for transient, nuclear and multimessenger astrophysics. However, the spatial localization, imaging capabilities and sensitivity of the measurements are strongly limited for the energy range >70 keV. To overcome these limitations, we have proposed a mission concept, ASTENA, submitted to ESA for its program "Voyage 2050". We will report on a pathfinder of ASTENA, that we intend to propose to ASI as an Italian mission with international participation. It will be based on one of the two instruments aboard ASTENA: a Laue lens with 20 m focal length, able to focus hard X-rays in the 50-700 keV passband into a 3-d position sensitive focal plane spectrometer. The combination of the focussing properties of the lens and of the localization properties of the detector will provide unparalleled imaging and spectroscopic capabilities, thus enabling studies of phenomena such as gamma-ray bursts afterglows, supernova explosions, positron annihilation lines and many more.

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“…A group in Ferrara (Italy) has been investigating the use of crystals with a radial curvature matching the focal length of the lens in order to reduce the radial extent of the diffracted spot onto the focal plane. [6][7][8] We go one step further with a new concept of Laue lens elements that focus both in the radial and azimuthal directions, called Silicon Laue Components (SiLC). In this concept, the size of the PSF still depends on the mosaic defocusing, but for the first time, it is independent from the cross-sectional dimensions of the elements.…”

Section: Introductionmentioning

confidence: 99%

Laue lens made of SiLCs for hard x-ray polarimetry

Barrière,

Abalo,

Collon

et al. 2023

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

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The case of a Laue lens providing effective area in the energy band 60 keV to 150 keV is investigated. The goal is to establish whether this type of optics could be used to extend polarimetric study of celestial sources beyond the energy range enabled by current-generation grazing incidence mirrors, with a focal length compatible with sub-orbital missions. The Laue lens considered is based on Silicon Laue components (SiLC), which makes use of Silicon Pore Optics technology heritage. A SiLC is a stack of thin crystalline silicon wedged plates that are curved in two directions to provide both radial and azimuthal focusing. SiLC technology is presented and the potential performance of a SiLC lens designed for 8 m focal length is investigated.

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The TRILL project: increasing the technological readiness of Laue lenses

Cited by 4 publications

References 0 publications

Recent developments in Laue lens manufacturing and their impact on imaging performance

Recent developments in Laue lens manufacturing and their impact on imaging performance

Opening the path to hard X-/soft gamma-ray focussing: the ASTENA-pathfinder mission

Laue lens made of SiLCs for hard x-ray polarimetry

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