Position-Sensitive Magnetic Calorimeters for Lynx
| Autor: | Stephen J. Smith, Wonsik Yoon, Archana M. Devasia, Peter C. Nagler, Thomas R. Stevenson, Simon R. Bandler, Kevin Ryu, M. A. Balvin |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Photon Pixel business.industry Detector Condensed Matter Physics 01 natural sciences Noise (electronics) Atomic and Molecular Physics and Optics 010305 fluids & plasmas Calorimeter Pulse (physics) Optics Cardinal point 0103 physical sciences General Materials Science 010306 general physics business Energy (signal processing) |
| Zdroj: | Journal of Low Temperature Physics. 199:916-922 |
| ISSN: | 1573-7357 0022-2291 |
| DOI: | 10.1007/s10909-019-02311-6 |
| Popis: | We describe the performance of position-sensitive metallic magnetic calorimeter X-ray detectors for potential future astrophysics missions, such as Lynx. The motivation behind this is to achieve a large focal plane area by increasing the number of pixels compared to the number of readout channels (called hydra). The detector consists of a $$5 \times 5$$ array of gold absorbers thermally coupled to a paramagnetic sensor. Since each absorber has a different thermal link to the sensor, it generates a different pulse shape and enables discrimination of pixel position. Recently, we have been successfully able to discriminate 25 averaged pulse shapes by means of rise-time and pulse height. The measured pulse shapes and distribution agree well with the modeling results. The estimated energy resolutions based on the pulse height and noise data we measured are 2.8–3.7 eV for $$\hbox {MnK}\alpha $$ X-ray photons at 50 mK. |
| Databáze: | OpenAIRE |
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