X-ray performance and simulation study of lobster eye optics

Jin Li; Takanori Sakamoto; Motoko Serino; Daisuke Yonetoku; Tatsuya Sawano; Ikuyuki Mitsuish; Tatehiro Mihara

doi:10.1117/12.2560121

13 December 2020 X-ray performance and simulation study of lobster eye optics

Jin Li, Takanori Sakamoto, Motoko Serino, Daisuke Yonetoku, Tatsuya Sawano, Ikuyuki Mitsuish, Tatehiro Mihara

Proceedings Volume 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray; 114447C (2020) https://doi.org/10.1117/12.2560121
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

Lobster eye optics (LEO) is an optics composed of many pores aligned along a sphere. Since the LEO can cover a wide field of view with good sensitivity in soft X-rays, it makes an ideal telescope to search for interesting transient sources such as high redshift gamma-ray bursts, electromagnetic counterparts of gravitational wave sources, and so on. We obtained two LEOs of different specifications manufactured by Photonis inc. (hereafter PLEO) and NNVT inc. (hereafter NLEO) and evaluated their X-ray performance. We confirmed that both LEOs focus parallel X-rays and make an image containing a center spot, cross arms, and scattering components at the focal plane, as suggested by Angel (1979). The full widths at half maximum of the measured point spread functions are ∼ 11′ (PLEO) and ∼ 4 ′ (NLEO). The effective areas of the central component at 1.5 keV are 1.37 cm2 (PLEO) and 2.58 cm² (NLEO). Based on our developed simulator calibrated using our X-ray measurements, the position accuracy of the PLEO is expected to be less than 1′ if the number of detected photons is more than 500.

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Citation Download Citation

Jin Li, Takanori Sakamoto, Motoko Serino, Daisuke Yonetoku, Tatsuya Sawano, Ikuyuki Mitsuish, and Tatehiro Mihara "X-ray performance and simulation study of lobster eye optics", Proc. SPIE 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, 114447C (13 December 2020); https://doi.org/10.1117/12.2560121

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