Toward large µ-calorimeters x-ray matrices based on metal-insulator sensors and HEMTs/SiGe cryo-electronics

J. L. Sauvageot; C. Pigot; X. de la Broïse; T. Charvolin; H. Sahin; M. Rodriguez; F. Lugiez; A. Le Coguie; Q. Dong; Y. Jin

doi:10.1117/12.2232397

18 July 2016 Toward large _μ-calorimeters x-ray matrices based on metal-insulator sensors and HEMTs/SiGe cryo-electronics

J. L. Sauvageot, C. Pigot, X. de la Broïse, T. Charvolin, H. Sahin, M. Rodriguez, F. Lugiez, A. Le Coguie, Q. Dong, Y. Jin

Author Affiliations +

Proceedings Volume 9905, Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray; 99050S (2016) https://doi.org/10.1117/12.2232397
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

The launch of ASTRO-H/ITOMI ,the X-ray Japanese/US mission, in February 2016 with μ-calorimeters based on Metal-Insulator-Sensors (M.I.S) experiment with a 4.5eV spectral resolution, would certainly generate renewed interest on the high impedance M.I.S based on Si P:B. Since 2009 we are involved in a large program to build a camera consisting of a 2x2 mosaic of 32x32 pixel matrices using this sensor type. Since we rely on very similar approach of ASTRO-H/ITOMI design, we have concentred our efforts on the use of collective all-silicon technologies only. We have already presented the building block such as thermometers, sensors and cryo-electronics. Now, thanks to our new 32x32 CAD, we are today in the process of building 4 32x32 matrices per wafer. ASTRO-H/SXS uses degenerated Si as output wiring of the pixel and an HgTe semi-conductor absorber. Thanks to the use of superconducting wiring and composite superconducting Tantalum absorber, we hope to enhance the spectral resolution of this matrix onto that of SXS. Moreover, our development benefits of an ultra low power consumption Cryo-Electronics chain. This chain is based on High Electron Mobility Transistors (HEMTs, with an AsGa/AlAsGa hetero-junction) and SiGe ASICs, and handles 34:1 multiplexing. It has been successfully tested under cryogenic conditions. The composite Tantalum absorber have been tested with 6keV X-rays, and our M.I.S. exhibit good and homogeneous sensitivity. To be compatible with the 1μW at 50mK thermal budget allowed in present day spatial cryo-coolers, we have also developed new thermal insulation techniques that will allow us to easily handle more than 4000 independent pixels within this tiny power budget.

Citation Download Citation

J. L. Sauvageot, C. Pigot, X. de la Broïse, T. Charvolin, H. Sahin, M. Rodriguez, F. Lugiez, A. Le Coguie, Q. Dong, and Y. Jin "Toward large _μ-calorimeters x-ray matrices based on metal-insulator sensors and HEMTs/SiGe cryo-electronics", Proc. SPIE 9905, Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray, 99050S (18 July 2016); https://doi.org/10.1117/12.2232397

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available