Bonn 2010 – wissenschaftliches Programm
HK 36.73: Poster
Mittwoch, 17. März 2010, 14:00–16:00, HG Aula
A Fast Microchannel-Plate Detector and High-Performance Electronics for Signal Conditioning — •Samuel Ayet1,2, Timo Dickel1, Marcel Diwisch1, Hans Geissel1,2, Christian Jesch1, Natalia Kuzminchuk1,2, Wolfgang Plass1,2, Christoph Scheidenberger1,2, and Baohua Sun1 — 1Justus-Liebig-Universität, Gießen — 2GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt
Microchannel-plate detectors are widely used in physics experiments. One of the most important factors of these detectors is the timing performance of the produced signal that limits the performance of the experiment, for example in mass spectrometry the mass resolution of time-of-flight mass spectrometers.
A microchannel-plate detector with a sub-nanosecond peak width has been developed. Electronics for amplification and splitting of the sub-nanosecond signals have also been developed. Specifically, an RF amplifier of 2.4 GHz bandwidth (-3 dB bandwidth) with flat (± 2.5 dB) and variable gain of typical 20 dB and a resistive power splitter of 5 GHz bandwidth have been developed.
These developments will be employed for a time-of-flight detector used for storage ring mass spectrometry and result in improved mass measurements accuracy.