Title :
Active pixel sensor for X-ray imaging spectroscopy
Author :
Lechner, P. ; Hartmann, R. ; Holl, P. ; Johannes, T. ; Klein, P. ; Kollmer, J. ; Lutz, G. ; Richter, R.H. ; Strüder, L. ; Fischer, P. ; Trimpl, M. ; Ulrici, J. ; Wermes, N. ; Castoldi, A. ; Gatti, E. ; Rehak, P.
Author_Institution :
MPI Halbleiterlabor, Munchen, Germany
fDate :
6/23/1905 12:00:00 AM
Abstract :
A promising candidate for the wide field imaging spectrometer of the European Space Agency´s X-ray Evolving Universe Spectroscopy (XEUS) mission is the Active Pixel Sensor (APS) based on the Depleted P-channel Field Effect Transistor (DEPFET). This concept combines low electronic noise with low power consumption, random accessibility of the pixels, high speed readout by parallel multi-channel processing, a fill factor of 100% by backside illumination and high quantum efficiency by an optimized entrance window and a fully depleted bulk. The DEPFET is a monolithic combination of detector and preamplifier with minimized capacitance and the possibility of repetitive non-destructive readout of the same signal thus reducing read noise. In this paper the DEPFET principle and the concepts of the APS and repetitive non-destructive readout are explained, measurements of single DEPFET structures and small APS prototypes are presented
Keywords :
X-ray detection; astronomical telescopes; astronomy computing; charge-coupled devices; field effect transistors; nondestructive readout; nuclear electronics; position sensitive particle detectors; preamplifiers; readout electronics; semiconductor counters; APS; DEPFET; European Space Agency X-ray Evolving Universe Spectroscopy mission; X-ray imaging spectroscopy; XEUS; active pixel sensor; backside illumination; depleted p-channel field effect transistor; fill factor; fully depleted bulk; high quantum efficiency; high speed readout; imaging spectrometer; low electronic noise; low power consumption; minimized capacitance; parallel multichannel processing; preamplifier; random accessibility; repetitive nondestructive readout; Detectors; Energy consumption; FETs; Image sensors; Lighting; Optical imaging; Pixel; Space missions; Spectroscopy; X-ray imaging;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2001 IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7324-3
DOI :
10.1109/NSSMIC.2001.1008400
