EUV, X-RAY, AND GAMMA-RAY INSTRUMENTATION FOR ASTRONOMY IX
|
1998年
/
3445卷
关键词:
XMM;
EPIC;
pn-CCD;
X-ray detectors;
X-ray astronomy;
fast timing;
D O I:
10.1117/12.330303
中图分类号:
P1 [天文学];
学科分类号:
0704 ;
摘要:
The pn-CCD camera is one of the three focal plane instruments of the European Photon Imaging Camera (EPIC) on board the X-ray Multi Mirror (XMM) mission scheduled for launch in August 1999. The detector consists of four quadrants oi. three pn-CCDs each, which are integrated on one 4 inch silicon wafer. Each CCD has 200 x 64 pixels (150 mu m x 150 mu m) with 280 mu m depletion depth. One CCD of a quadrant is readout at a time, while the four quadrants can be processed independently oi each other. Observations of point sources blighter than II mCrab in imagine mode will be effected by photon pile-up. However, special operating modes can be used to observe bright sources up to 150 mCrab in Timing Mode with 30 mu s time resolution and very bright sources up to several Crab in Burst Mode with 7 mu s time resolution. We have tested and calibrated the flight model FM of the EPIC pn-CCD camera at the long beam test facility Panter near Munich and at the synchrotron monochromators of the Institut d'Astrophysique Spatiale (IAS) in Orsay, Fiance. In this paper we describe the calibration of the pn-CCD detector in high time resolution/bright source operating modes and present preliminary results on the performance in these modes.