| タイトル | Small, Fast TES Microcalorimeters with Unprecedented X-ray Spectral Performance |
| 本文（外部サイト） | http://hdl.handle.net/2060/20110013295 |
| 著者（英） | Hilton, G. C.; Kelley, R. L.; Eckart, M. E.; Bandler, S. R.; Bailey, C. N.; Porter, F. S.; Irwin, K. D.; Finkbeiner, F. M.; Smith, S. J.; Chervenak, J. A.; Vale, L. R.; Adams, J. S.; Sadleir, J. E.; Kilbourne, C. A. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2011-01-01 |
| 言語 | eng |
| 内容記述 | Driven initially by the desire for X-ray microcalorimeter arrays suitable for imaging the dynamic solar corona, we have developed a transition-edge-sensor (TES) microcalorimeter optimization that exhibits a unique combination of high spectral resolving power and a wide X-ray bandpass. These devices have achieved spectral performance of dE approximately 1.3 eV FWHM at 1.5 keV, 1.6 eV at 6 keV, and 2.0 eV at 8 keV, using small TESs (e.g., approximately 35 micron x 35 micron) that operate in a regime in which the superconducting transition is highly current dependent. In order to accommodate high X-ray count rates, the devices sit directly on a solid substrate instead of on membranes, and we use an embedded heatsinking layer to reduce pixel-to-pixel crosstalk. We will present results from devices with a range of TES and absorber sizes, and from device wafers with varied embedded heatsink materials. This contribution will focus on count-rate capabilities, including a discussion of the trade-off between count rate and energy resolution, and the heatsinking design. We will also present preliminary tests of array readout using a code-division multiplexed SQUID readout scheme, which may be necessary to enable large arrays of these fast devices. |
| NASA分類 | Instrumentation and Photography |
| レポートNO | GSFC.ABS.4480.2011 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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