Speaker
Dr
Julian Becker
(DESY)
Description
One of the main advantages of the European XFEL is its fast bunch repetition frequency of 4.5 MHz.
The XFEL will provide bunch trains of up to 2700 bunches every 222 ns, followed by an idle time of 99.4 ms, resulting in a supercycle of 10 Hz and 27000 bunches per second. Correspondingly fast 2D detectors such as AGIPD are being developed. Thiswill allow investigations with various techniques on timescales that have not been accessible with 2D detectors before.
The AGIPD is one of three detector development projects approved by the European XFEL project team. The development is done in a collaboration between DESY, the University of Hamburg and the University of Bonn in Germany, and the Paul Scherrer Institute (PSI) in Switzerland.
AGIPD is based on the hybrid pixel technology. A newly developed ASIC will feature in each pixel a dynamic gain switching amplifier (to cope with the high dynamic range) and an analogue pipeline capable of storing the pictures at the desired 4.5 MHz speed.
The AGIPD will feature a pixel size of 200 x 200 um^2 and a sensor thickness of 500 um. The ASIC will be able to store more than 300 images inside the pixel area during the bunch train. The image data will be read out and digitized in the gap between two bunch trains.
The current results of the 16 x 16 pixel prototype will be presented, showing for example the linearity, noise and high pulse tolerance of the ASIC.
Preferred medium (Oral/poster)
oral
Author
Dr
Julian Becker
(DESY)
