Regensburg 2013 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 36: Magnetic Measurement Techniques
MA 36.3: Vortrag
Donnerstag, 14. März 2013, 10:15–10:30, H3
Multi-Segmented Delayline Detector: A new Data Acquisition Strategy for FEL and Other Timing Experiments — •P. Luschchyk1, A. Oelsner2, D. Kutnyakhov1, A. Fognini3, Y. Acremann3, A. Vaterlaus3, V. Rybnikov4, and G. Schönhense1 — 1Johannes Gutenberg-Universität, Institut für Physik, D-55099 Mainz — 2Surface Concept GmbH — 3Laboratorium für Festkörperphysik, ETH Zürich, Switzerland — 4FLASH, DESY, Hamburg
High-brilliance but low-repetition-rate sources like free electron lasers require new strategies of particle detection because many events have to be registered within one pulse. In this contribution we describe the design parameters and performance of a novel multi-segmented delayline detector (DLD). It consists of an array of 16x9=144 discrete anodes, where the 16 columns are read out by a 16-channel DLD electronics unit, whereas the 9 rows are separated by delayline coupling. The readout of each channel is designed such that all 9 in a row can register simultaneously a hit, thus all 144 anodes can register hits in parallel. The dead time of the detector is as short as 80 ns. This approach increases the detection efficiency by more than an order of magnitude (limited by Poisson statistics) in comparison to the standard DLD [1]. Data acquisition is based on LINUX and integrated in FLASH DAQ system to transfer all results synchronously per macrobunch. [1] A. Oelsner et al., Rev. Sci. Instrum. 72, 3968 (2001) Project funded by BMBF (05K12UM2)