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29 July 2010 The wide-field imager for IXO: status and future activities
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The Wide Field Imager (WFI) of the International X-ray Observatory (IXO) is an X-ray imaging spectrometer based on a large monolithic DePFET (Depleted P-channel Field Effect Transistor) Active Pixel Sensor. Filling an area of 10 x 10 cm2 with a format of 1024 x 1024 pixels it will cover a field of view of 18 arcmin. The pixel size of 100 x 100 μm2 corresponds to a fivefold oversampling of the telescope's expected 5 arcsec point spread function. The WFI's basic DePFET structure combines the functionalities of sensor and integrated amplifier with nearly Fano-limited energy resolution and high efficiency from 100 eV to 15 keV. The development of dedicated control and amplifier ASICs allows for high frame rates up to 1 kHz and flexible readout modes. Results obtained with representative prototypes with a format of 256 x 256 pixels are presented.
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Proceedings of SPIE (January 25 2002)
The IXO wide-field imager
Proceedings of SPIE (July 16 2010)
Active pixel sensors for imaging x-ray spectrometers
Proceedings of SPIE (March 11 2003)
Test setup for DEPMOSFET matrices for XEUS
Proceedings of SPIE (June 15 2006)

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