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Proceedings Paper

Characterization of x-ray lobster optics with a hybrid CMOS sensor (Conference Presentation)
Author(s): Tanmoy Chattopadhyay; Mitchell Wages; David Burrows; Evan Bray; Adolf Inneman; Rene Hudec; Veronika Stehlikova; David Schendt; Sam Hull; Abe Falcone; Maria Mcquaide
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Paper Abstract

X-ray lobster optics provide a unique way to focus X-rays onto a small focal plane imager with wide field of view imaging. Such an instrument with angular resolution of a few arcminutes can be used to study GRB afterglows, as well as the variability and spectroscopic characteristics for other astrophysical objects. At Penn state University, we characterize these lobster optics with an H1RG CMOS sensor (100 μm thick Silicon with 18 μm pixel size), procured from Teledyne Imaging Sensors at its focal plane. The light-weight compact lobster optic with a 25 cm focal length provides two dimensional imaging with ~25 cm^2 effective area at 2 keV. We chose the hybrid CMOS detector (HCD) since X-ray HCDs offer several advantages (e.g. radiation hard, low power, faster and flexible readout rate) over CCDs for future X-ray missions. We utilize 47 m long X-ray beam line at Penn state University to do our experiments where we characterize the overall effective area of the instrument at 1.5 - 8 keV for both on-axis and off-axis angles. In this presentation, we will describe the characterization test stand and methods, as well as the detailed results. We perform ray-tracing simulations to theoretically validate the results which would also be briefly discussed here. While this is simply a proof-of-concept experiment, such an instrument with significant collecting area can be explored for future rocket or CubeSat experiments.

Paper Details

Date Published: 19 September 2017
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Proc. SPIE 10399, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII, 103991P (19 September 2017); doi: 10.1117/12.2274647
Show Author Affiliations
Tanmoy Chattopadhyay, The Pennsylvania State Univ. (United States)
Mitchell Wages, The Pennsylvania State Univ. (United States)
David Burrows, The Pennsylvania State Univ. (United States)
Evan Bray, The Pennsylvania State Univ. (United States)
Adolf Inneman, Czech Technical Univ. in Prague (Czech Republic)
Rene Hudec, Czech Technical Univ. in Prague (Czech Republic)
Veronika Stehlikova, Czech Technical Univ. in Prague (Czech Republic)
David Schendt, The Pennsylvania State Univ. (United States)
Sam Hull, The Pennsylvania State Univ. (United States)
Abe Falcone, The Pennsylvania State Univ. (United States)
Maria Mcquaide, The Pennsylvania State Univ. (United States)


Published in SPIE Proceedings Vol. 10399:
Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII
Stephen L. O'Dell; Giovanni Pareschi, Editor(s)

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