Lothar Struder

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We propose a new detector system capable to fulfil the requirements of the future XFEL in Hamburg. The instrument will be able to record X-ray images with a maximum frame rate of 5MHz and to achieve a high dynamic range. The system is based on a pixel-silicon sensor with a new designed non-linear-DEPFET as a central amplifier structure. The detector chip is(More)
A PNCCD is successfully operating as one of the focal plane CCDs aboard the satellite XMM-Newton. An advanced version of this kind of CCDs will be the sensing devices for the eROSITA X-ray astronomy mission. These fully depleted CCDs are developed and manufactured at the MaxPlanck-Institute Semiconductor Lab together with the company PNSensor. Their(More)
The relatively small doppler broadening of silicon and the excellent energy and position resolution of Controlled-Drift Detectors make these detectors suitable candidates as scatter detectors that allow reconstruction of the orginal location of the gamma-ray with ultimate position resolution. The achievable performance of such detectors allow imaging the 2D(More)
The German X-ray telescope eROSITA is the core instrument on the Russian satellite Spectrum-Roentgen-Gamma (SRG). Its scientific goal is the exploration of the X-ray Universe in the energy band from about 0.3 keV up to 10 keV with excellent energy, time and spatial resolution and large effective telescope area. The launch of the SRG satellite is scheduled(More)
Measurements with a high-speed pn-charge coupled device (pnCCD) system have been performed in the optical and near infrared (NIR) wavelength range. Some of the key parameters of the system that were determined include the overall quantum efficiency (QE), the point spread function (PSF) and the photon transfer curve (PTC). The results of these measurements(More)
New generation synchrotron light sources, the X-ray free electron lasers, require a two dimensional focal plane instrumentation to perform X-ray imaging from below 100eV up to 25keV. The instruments have to face the accelerator bunch structure and energy bandwidth which is different for existing (FLASH, Hamburg) and future photon sources (LCLS, SCSS and(More)
We describe innovative topologies of Silicon Drift Detectors suitable for 2D position sensing applications with very fast readout (i.e. operating at high drift fields) and we report the experimental characterisation of two prototypes. The specific design issues taken into account in order to operate at high drift fields (e.g. able to achieve drift speeds of(More)
The Max-Planck-Institute semiconductor lab develops, fabricates, tests, and qualifies pnCCDs for space and ground based applications. pnCCDs are CCDs showing high quantum efficiency up to 20 keV while delivering good spatial and energy resolution. This article describes the algorithms applied to the raw data as recorded by the data acquisition system. The(More)
The ATHENA X-ray Observatory-IXO is a planned multinational orbiting X-ray observatory with a focal length of 11.5 m. ATHENA aims to perform pointed observations in an energy range from 0.1 keV to 15 keV with high sensitivity. For high spatial and timing resolution imaging and spectroscopic observations the 640 &#x00D7; 640 pixels<sup>2</sup> large(More)
VERITAS is the first 128-channel ASIC developed to readout both the pnCCDs and the DEPFET arrays produced at the MPI-Halbleiterlabor in Munich. These detectors are used in a large variety of scientific applications, ranging from X-ray astronomy to the new X-ray Free Electron Laser sources. The main concept of VERITAS is to provide a flexible readout chip(More)