DEPFET Macropixel Detectors for MIXS: Integration and Qualification of the Flight Detectors

Majewski, P.; Andricek, L.; Bähr, Alexander; Vita, G. De; Günther, Bettina; Hermenau, K.; Hilchenbach, M.; Lauf, T.; Lechner, P.; Lütz, G.; Miessner, Danilo; Porro, M.; Reiffers, Jonas; Richter, R.; Schäller, G.; Schnecke, M.; Schopper, F.; Soltau, H.; Stefanescu, A.; Strecker, Rafael; Strüder, L.; Treis, J.

doi:10.1109/tns.2012.2211616

Cited by 16 publications

(9 citation statements)

References 21 publications

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“…The telescope has a focal length of 1 m and offers an effective area of~0.005 m 2 with a high performance silicon DEPFET active pixel sensor detector. The detector is optimised for spectroscopy and provides almost Fanolimited energy resolution [51]. Hence, it does not operate at the time resolution required for XNAV, but could be replaced by a suitable detector, as discussed below.…”

Section: Opticsmentioning

confidence: 99%

Towards practical autonomous deep-space navigation using X-Ray pulsar timing

et al. 2016

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We investigate the feasibility of deep-space navigation using the highly stable periodic signals from X-ray pulsars in combination with dedicated instrumentation on the spacecraft: a technique often referred to as 'XNAV'. The results presented are based on the outputs from a study undertaken for the European Space Agency. The potential advantages of this technique include increased spacecraft autonomy and lower mission operating costs. Estimations of navigation uncertainties have been obtained using simulations of different pulsar combinations and navigation strategies. We find that the pulsar PSR B1937 + 21 has potential to allow spacecraft positioning uncertainties of~2 and~5 km in the direction of the pulsar after observation times of 10 and 1 h respectively, for ranges up to 30 AU. This could be achieved autonomously on the spacecraft using a focussing X-ray instrument of effective area~50 cm 2 together with a high performance atomic clock. The Mercury Imaging X-ray Spectrometer (MIXS) instrument, due to be launched on the ESA/JAXA BepiColombo mission to Mercury in 2018, is an example of an instrument that may be Exp Astron (2016) further developed as a practical telescope for XNAV. For a manned mission to Mars, where an XNAV system could provide valuable redundancy, observations of the three pulsars PSR B1937 + 21, B1821-24 and J0437-4715 would enable a three-dimensional positioning uncertainty of~30 km for up to 3 months without the need to contact Earth-based systems. A lower uncertainty may be achieved, for example, by use of extended observations or, if feasible, by use of a larger instrument. X-ray instrumentation suitable for use in an operational XNAV subsystem must be designed to require only modest resources, especially in terms of size, mass and power. A system with a focussing optic is required in order to reduce the sky and particle background against which the source must be measured. We examine possible options for future developments in terms of simpler, lower-cost Kirkpatrick-Baez optics. We also discuss the principal design and development challenges that must be addressed in order to realise an operational XNAV system.

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Section: Opticsmentioning

confidence: 99%

Towards practical autonomous deep-space navigation using X-Ray pulsar timing

et al. 2016

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“…The ROAn framework development has started in 2006. Now the framework has reached an advanced state and has been used applied and used for ASIC qualifications [7,8] and detector qualifications in projects such as XEUS [9], Simbol-X [10], IXO [11,12], and BepiColombo [6,13]. A standard set of analysis steps for DePFET data analysis is available and has been adapted continuously to the latest developments of DePFET detectors.…”

Section: Discussionmentioning

confidence: 99%

ROAn, a ROOT based Analysis Framework

Lauf¹,

Andritschke²

2013

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The ROOT based Offline and Online Analysis (ROAn) framework was developed to perform data analysis on data from Depleted P-channel Field Effect Transistor (DePFET) detectors, a type of active pixel sensors developed at the MPI Halbleiterlabor (HLL). ROAn is highly flexible and extensible, thanks to ROOT's features like run-time type information and reflection. ROAn provides an analysis program which allows to perform configurable step-by-step analysis on arbitrary data, an associated suite of algorithms focused on DePFET data analysis, and a viewer program for displaying and processing online or offline detector data streams.The analysis program encapsulates the applied algorithms in objects called steps which produce analysis results. The dependency between results and thus the order of calculation is resolved automatically by the program. To optimize algorithms for studying detector effects, analysis parameters are often changed. Such changes of input parameters are detected in subsequent analysis runs and only the necessary recalculations are triggered. This saves time and simultaneously keeps the results consistent.The viewer program offers a configurable Graphical User Interface (GUI) and process chain, which allows the user to adapt the program to different tasks such as offline viewing of file data, online monitoring of running detector systems, or performing online data analysis (histogramming, calibration, etc.).Because of its modular design, ROAn can be extended easily, e.g. be adapted to new detector types and analysis processes.

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“…The vertical section of the assembly contains a detector plane assembly (Fig. 10-C) which holds the detector and its associated ASICs (Majewski et al 2012) which are located on a ceramic circuit board (CCB) that is mounted co-planar with the detector.…”

Section: Focal Plane Assembliesmentioning

confidence: 99%

The BepiColombo Mercury Imaging X-Ray Spectrometer: Science Goals, Instrument Performance and Operations

et al. 2020

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The Mercury Imaging X-ray Spectrometer is a highly novel instrument that is designed to map Mercury’s elemental composition from orbit at two angular resolutions. By observing the fluorescence X-rays generated when solar-coronal X-rays and charged particles interact with the surface regolith, MIXS will be able to measure the atomic composition of the upper ∼10-20 μm of Mercury’s surface on the day-side. Through precipitating particles on the night-side, MIXS will also determine the dynamic interaction of the planet’s surface with the surrounding space environment. MIXS is composed of two complementary elements: MIXS-C is a collimated instrument which will achieve global coverage at a similar spatial resolution to that achieved (in the northern hemisphere only – i.e. ∼ 50 – 100 km) by MESSENGER; MIXS-T is the first ever X-ray telescope to be sent to another planet and will, during periods of high solar activity (or intense precipitation of charged particles), reveal the X-ray flux from Mercury at better than 10 km resolution. The design, performance, scientific goals and operations plans of the instrument are discussed, including the initial results from commissioning in space.

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DEPFET Macropixel Detectors for MIXS: Integration and Qualification of the Flight Detectors

Cited by 16 publications

References 21 publications

Towards practical autonomous deep-space navigation using X-Ray pulsar timing

Towards practical autonomous deep-space navigation using X-Ray pulsar timing

ROAn, a ROOT based Analysis Framework

The BepiColombo Mercury Imaging X-Ray Spectrometer: Science Goals, Instrument Performance and Operations

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