Development of fast data processing electronics for a stacked x-ray detector system with application as a polarimeter

Maier, Daniel; Dick, Jürgen; Distratis, G.; Kendziorra, E.; Santangelo, A.; Schanz, T.; Tenzer, C.; Warth, Gabriele

doi:10.1117/12.926819

Cited by 2 publications

(5 citation statements)

References 12 publications

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“…We have already described this application in Maier et al (2012) 6 for a 200 keV test beam. At this energy Si works as an effective material for Compton scattering.…”

Section: X-ray Polarimetermentioning

confidence: 98%

“…The supply voltages and electrical signals of the LED are connected to the sides, while all electrical connections of the HED are connected to the backside of the vessel. Both detectors are installed in a way, that both sensitive (5) and (6). Right: the back view of the vessel shows the LED-ADC with the D3C (5) and the HED-ADC with controlling electronics (6).…”

Section: The Mechanical Setupmentioning

confidence: 99%

“…Both detectors are installed in a way, that both sensitive (5) and (6). Right: the back view of the vessel shows the LED-ADC with the D3C (5) and the HED-ADC with controlling electronics (6).…”

Section: The Mechanical Setupmentioning

confidence: 99%

“…For more details on the LED subsystem, see Maier et al (2012). 6 SEQ The sequencer (SEQ) is used to program the readout ASIC and the two switcher chips and to control the gate-, clear gate-, and clear pulses for detector operation. Additionally, it drives and synchronizes the readout chip and all further readout electronics and data processing units.…”

Section: Readout-and Event Processing Electronicsmentioning

confidence: 99%

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Development of a stacked detector system for the x-ray range and its possible applications

et al. 2014

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We have constructed a stacked detector system operating in the X-ray range from 0.5 keV to 250 keV that consists of a Si-based 64x64 DePFET-Matrix in front of a CdTe hybrid detector called Caliste-64. The setup is operated under laboratory conditions that approximate the expected environment of a space-borne observatory.The DePFET detector is an active pixel matrix that provides high count-rate capabilities with a near Fanolimited spectral resolution at energies up to 15 keV. The Caliste-64 hard X-ray camera consists of a 1 mm thick CdTe crystal combined with very compact integrated readout electronics, constituting a high performance spectro-imager with event-triggered time-tagging capability in the energy range between 2 keV and 200 keV. In this combined geometry the DePFET detector works as the Low Energy Detector (LED) while the Caliste-64 -as the High Energy Detector (HED) -detects predominantly the high energetic photons that have passed the LED.In addition to the individual optimization of both detectors, we use the setup to test and optimize the performance of the combined detector system. Side-effects like X-ray fluorescence photons, electrical crosstalk, and mutual heating have negative impacts on the data quality and will be investigated. Besides the primary application as a combined imaging detector system with high sensitivity across a broad energy range, additional applications become feasible. Via the analysis of coincident events in both detectors we can estimate the capabilities of the setup to be used as a Compton camera and as an X-ray polarimeter -both desirable functionalities for use in the lab as well as for future X-ray missions.

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“…We have already described this application in Maier et al (2012) 6 for a 200 keV test beam. At this energy Si works as an effective material for Compton scattering.…”

Section: X-ray Polarimetermentioning

confidence: 98%

Section: The Mechanical Setupmentioning

confidence: 99%

Section: The Mechanical Setupmentioning

confidence: 99%

Section: Readout-and Event Processing Electronicsmentioning

confidence: 99%

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Development of a stacked detector system for the x-ray range and its possible applications

et al. 2014

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“…The ECC method was tested with a 8 x 8 pixel CdTe detector Caliste 64 Meuris et al [2009b] within the detector setup CANDELA Maier et al [2012Maier et al [ , 2014.…”

Section: Applicationmentioning

confidence: 99%

Energy calibration via correlation

Maier

Limousin

2016

Nuclear Instruments and Methods in Physics Research Section A:

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The main task of an energy calibration is to find a relation between pulse-height values and the corresponding energies. Doing this for each pulse-height channel individually requires an elaborated input spectrum with an excellent counting statistics and a sophisticated data analysis. This work presents an easy to handle energy calibration process which can operate reliably on calibration measurements with low counting statistics. The method uses a parameter based model for the energy calibration and concludes on the optimal parameters of the model by finding the best correlation between the measured pulse-height spectrum and multiple synthetic pulse-height spectra which are constructed with different sets of calibration parameters. A CdTe-based semiconductor detector and the line emissions of an 241 Am source were used to test the performance of the correlation method in terms of systematic calibration errors for different counting statistics. Up to energies of 60 keV systematic errors were measured to be less than 0.1 keV. Energy calibration via correlation can be applied to any kind of calibration spectra and shows a robust behavior at low counting statistics. It enables a fast and accurate calibration that can be used to monitor the spectroscopic properties of a detector system in near realtime

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Development of fast data processing electronics for a stacked x-ray detector system with application as a polarimeter

Cited by 2 publications

References 12 publications

Development of a stacked detector system for the x-ray range and its possible applications

Development of a stacked detector system for the x-ray range and its possible applications

Energy calibration via correlation

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