Signal processor controlled USB2.0 interface for Medipix2 detector

Platkevič, Michal; Bocarov, V.; Jakůbek, J.; Pospı́šil, S.; Tichý, Vladimír; Vykydal, Z.

doi:10.1016/j.nima.2008.03.065

Cited by 16 publications

(8 citation statements)

References 5 publications

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“…Due to the heat dissipation from the ASIC the temperature of the CdTe sensor was approximately 37 ∘ C. Stabilization of the detector at lower temperature is an option for leakage current reduction and possibly for an improvement of the energy resolution. Images in time-over-threshold mode were taken using the USB readout [34] controlled by the data acquisition software Pixelman [35]. The probability for pair production is 16.2% of the Compton scattering probability in CdTe at this photon energy.…”

Section: Energy Resolution Of Tracksmentioning

confidence: 99%

The Potential of Hybrid Pixel Detectors in the Search for the Neutrinoless Double-Beta Decay of¹¹⁶Cd

Michel

Gleixner

Durst

et al. 2013

Advances in High Energy Physics

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We investigated the potential of the energy resolving hybrid pixel detector Timepix contacted to a CdTe sensor layer for the search for the neutrinoless double-beta decay ofCd. We found that a CdTe sensor layer with 3 mm thickness and 165 μm pixel pitch is optimal with respect to the effective Majorana neutrino mass (mββ) sensitivity. In simulations, we were able to demonstrate a possible reduction of the background level caused by single electrons by approximately 75% at a specific background rate of 10−3counts/(kg×keV×yr) at a detection efficiency reduction of about 23% with track analysis employing random decision forests. Exploitation of the imaging properties with track analysis leads to an improvement in sensitivity tomββby about 22%. After 5 years of measuring time, the sensitivity tomββof a 420 kg CdTe experiment (90%Cdenrichment) would be 59 meV on a 90% confidence level for a specific single-electron background rate of 10−3counts/(kg×keV×yr). Theα-particle background can be suppressed by at least about six orders of magnitude. The benefit of the hybrid pixel detector technology might be increased significantly if drift-time difference measurements would allow reconstruction of tracks in three dimensions.

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Section: Energy Resolution Of Tracksmentioning

confidence: 99%

The Potential of Hybrid Pixel Detectors in the Search for the Neutrinoless Double-Beta Decay of¹¹⁶Cd

Michel

Gleixner

Durst

et al. 2013

Advances in High Energy Physics

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“…The Timepix offers the capability of high event rates up to 4 kHz [21] and allows very fast data acquisition with an appropriate interface for data transfer. The experimental setup presented here was not optimized for fast data acquisition, since more advanced USB-based readout modules are currently being developed [22]. The scanning method and delay line readout approach realized in conventional mass spectrometric imaging obtains positional information indirectly.…”

Section: Discussionmentioning

confidence: 99%

Digital Imaging Mass Spectrometry

Bamberger

Renz

Bamberger

2011

J. Am. Soc. Mass Spectrom.

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Methods to visualize the two-dimensional (2D) distribution of molecules by mass spectrometric imaging evolve rapidly and yield novel applications in biology, medicine, and material surface sciences. Most mass spectrometric imagers acquire high mass resolution spectra spot-by-spot and thereby scan the object's surface. Thus, imaging is slow and image reconstruction remains cumbersome. Here we describe an imaging mass spectrometer that exploits the true imaging capabilities by ion optical means for the time of flight mass separation. The mass spectrometer is equipped with the ASIC Timepix chip as an array detector to acquire the position, mass, and intensity of ions that are imaged by matrix-assisted laser desorption/ionization (MALDI) directly from the target sample onto the detector. This imaging mass spectrometer has a spatial resolving power at the specimen of (84±35)μm with a mass resolution of 45 and locates atoms or organic compounds on a surface area up to~2 cm 2 . Extended laser spots of~5 mm 2 on structured specimens allows parallel imaging of selected masses. The digital imaging mass spectrometer proves high hit-multiplicity, straightforward image reconstruction, and potential for high-speed readout at 4 kHz or more. This device demonstrates a simple way of true image acquisition like a digital photographic camera. The technology may enable a fast analysis of biomolecular samples in near future.

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“…Cylindrical samples of trabecular bone from porcine proximal femurs (3 mm in diameter, n=4) were scanned using in-house micro-CT system, consisting of X-ray Hamamatsu tungsten microfocus tube, rotating table on which the sample is placed and Medipix-2 detector [5,6] (300 m thick Si sensors arranged into 256x256 square matrix).…”

Section: Methodsmentioning

confidence: 99%

Comparison of different plasticity criteria for trabecular bone failure modelling

Jiroušek

2008

Proc Appl Math and Mech

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Different plasticity criteria applied to failure analysis of trabecular bone are compared. A cylindrical sample of bovine trabecular bone is mechanically tested in uniaxial compression/tension with 2% applied strain. Obtained response in compared to responses obtained using finite element model of trabecular bone inner structure subjected to the same loading conditions. FE model is reconstructed from micro-CT images. Elastic material properties at the level of trabecula are determined using nanoindentation. Compared plasticity criteria are based on these elastic material properties, i.e. on Young's modulus of elasticity from nanoindentation. The objective of the paper is to demonstrate the importance to reflect the anisotropic plasticity and to evaluate variation in obtained response when the anisotropy is neglected.

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Signal processor controlled USB2.0 interface for Medipix2 detector

Cited by 16 publications

References 5 publications

The Potential of Hybrid Pixel Detectors in the Search for the Neutrinoless Double-Beta Decay of¹¹⁶Cd

The Potential of Hybrid Pixel Detectors in the Search for the Neutrinoless Double-Beta Decay of¹¹⁶Cd

Digital Imaging Mass Spectrometry

Comparison of different plasticity criteria for trabecular bone failure modelling

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Signal processor controlled USB2.0 interface for Medipix2 detector

Cited by 16 publications

References 5 publications

The Potential of Hybrid Pixel Detectors in the Search for the Neutrinoless Double-Beta Decay of116Cd

The Potential of Hybrid Pixel Detectors in the Search for the Neutrinoless Double-Beta Decay of116Cd

Digital Imaging Mass Spectrometry

Comparison of different plasticity criteria for trabecular bone failure modelling

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The Potential of Hybrid Pixel Detectors in the Search for the Neutrinoless Double-Beta Decay of¹¹⁶Cd

The Potential of Hybrid Pixel Detectors in the Search for the Neutrinoless Double-Beta Decay of¹¹⁶Cd