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RESEARCH PRODUCT
The IXO Wide-Field Imager
P. MajewskiSven HerrmannGerhard LutzJohannes TreisA. StefanescuA. StefanescuLuca BombelliT. LaufPeter LechnerRainer RichterGiulio De VitaMatteo PorroJonas ReiffersFlorian AschauerCarlo FioriniLothar StrüderA. Meurissubject
X-ray AstronomyImaging spectrometerWide Field ImagerField of viewSettore ING-INF/01 - ElettronicaIntegrated amplifierlaw.inventionTelescopeOpticslawWFIDePFETX-ray SpectroscopyInternational X-ray Observatory; IXO; Wide Field Imager; WFI; X-ray Astronomy; X-ray Spectroscopy; X-ray Imaging; DePFET; Active Pixel SensorPhysicsCMOS sensorActive Pixel SensorPixelSpectrometersezelebusiness.industryAmplifierIXObusinessInternational X-ray ObservatoryX-ray Imagingdescription
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 × 10 cm² with a format of 1024 × 1024 pixels it will cover a field of view of 18 arcmin. The pixel size of 100 × 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 × 256 pixels are presented.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-07-16 |