MIXS focal plane assembly

Juan, J. L. San; Serrano, Javier; Mas-Hesse, J. M.; Treis, J.; Whitford, C. H.; Stevenson, T.; Pedrosa, Enrique; R, Javier Moreno; Peso, Germán; F, Javier Moreno; Lecina, María

doi:10.1117/12.789006

Cited by 3 publications

(1 citation statement)

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“…In the instrument setup, the surface of the cooling block serves as interface for the thermal strap from the radiator. The outer frame is coupled to the spacecraft ambient temperature, which is expected to be above 30 • C. Thermal simulations show, 19 that in this way the detector can be kept at a temperature below -40 • C, while the hybrid resides at temperatures above +30 • C with large thermal gradients along the bond wires and the hybrid frame spokes. The environmental testing of a structural thermal model (STM) is in progress.…”

Section: Macropixel Devices For Mixsmentioning

confidence: 99%

The DEPFET-based focal plane detectors for MIXS on BepiColombo

et al. 2010

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behalf of the MIXS collaboration ABSTRACT X-ray detectors based on arrays of DEPFET macropixels, which consist of a silicon drift detector combined with a detector/amplifier structure DEPFET as readout node, provide a convenient and flexible way to adapt the pixel size of a focal plane detector to the resolving power of any given X-ray optical system. Macropixels combine the traditional benefits of an SDD, like scalability, arbitrary geometry and excellent QE even in the low energy range, with the advantages of DEPFET structures: Charge storage capability, near Fano-limited energy resolution, low power consumption and high speed readout. Being part of the scientific payload of ESA's BepiColombo mission, the MIXS instrument will be the first instrument to make use of DEPFET macropixel based FPA detectors in space. MIXS will perform a complete planetary X-ray fluorescence analysis of Mercury's crust with high spectral and spatial resolution. MIXS will contain two focal plane detectors consisting of a 64 × 64 macropixel matrix with 300 × 300 μm 2 pixel size. The main challenges for the instrument are the difficult radiation and thermal environment around Mercury, requiring high speed readout and sophisticated thermal management to reduce the impact of thermally generated leakage current within an irradiated detector. Dedicated VLSI integrated readout electronics has been developed for MIXS: a fast, radiation hard, low power, high voltage switch circuit to control the device, and a low noise, high speed amplifier/shaper IC. Detector assemblies have been built, electrical screening tests for the flight models and spectroscopical qualification tests are in progress.

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Section: Macropixel Devices For Mixsmentioning

confidence: 99%