Results of accelerometer monitor in the ground testing of Resolve x-ray microcalorimeter instrument onboard XRISM

Ryuta Imamura; Masahiro Tsujimoto; Hisamitsu Awaki; Meng P. Chiao; Ryuichi Fujimoto; Yoshitaka Ishisaki; Richard L. Kelley; Caroline A. Kilbourne; Frederick S. Porter; Makoto Sawada; Gary A. Sneiderman; Yoh Takei; Shinya Yamada

doi:10.1117/12.2629773

29 August 2022 Results of accelerometer monitor in the ground testing of Resolve x-ray microcalorimeter instrument onboard XRISM

Ryuta Imamura, Masahiro Tsujimoto, Hisamitsu Awaki, Meng P. Chiao, Ryuichi Fujimoto, Yoshitaka Ishisaki, Richard L. Kelley, Caroline A. Kilbourne, Frederick S. Porter, Makoto Sawada, Gary A. Sneiderman, Yoh Takei, Shinya Yamada

Author Affiliations +

Proceedings Volume 12191, X-Ray, Optical, and Infrared Detectors for Astronomy X; 121912C (2022) https://doi.org/10.1117/12.2629773
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

The Resolve instrument onboard the XRISM satellite is equipped with 6 × 6 x-ray microcalorimeter detectors aiming at an energy resolution of 7 eV (FWHM) at 5.9 keV. It is currently under development by an international collaboration and will be launched in 2023. The detectors are operated at 50 mK, which is achieved by a combination of four Stirling coolers (STC), one Joule-Thomson cooler (JTC), three-stage adiabatic demagnetization refrigerators, and superfluid helium inside the dewar. The cryocoolers (STC and JTC) are significant sources of microphonic noise against the detector performance. To understand and characterize the microphonic propagation, we monitored the level of vibration throughout the ground instrument-level tests in 2019–2022, yielding a rich and unique data set of the accelerometers and the detector at 50 mK amounting to 1720 hours (6.2 Ms). In this article, we report the result of classifying thermal and non-thermal microcalorimeter noise, distinguishing the origin of the noise, and the method for optimizing the cooler drive frequency that minimizes the effect of the noise originating from the cooler.

Citation Download Citation

Ryuta Imamura, Masahiro Tsujimoto, Hisamitsu Awaki, Meng P. Chiao, Ryuichi Fujimoto, Yoshitaka Ishisaki, Richard L. Kelley, Caroline A. Kilbourne, Frederick S. Porter, Makoto Sawada, Gary A. Sneiderman, Yoh Takei, and Shinya Yamada "Results of accelerometer monitor in the ground testing of Resolve x-ray microcalorimeter instrument onboard XRISM", Proc. SPIE 12191, X-Ray, Optical, and Infrared Detectors for Astronomy X, 121912C (29 August 2022); https://doi.org/10.1117/12.2629773

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