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Direct electron detection is currently revolutionizing many fields of electron microscopy due to its lower noise, its reduced point-spread function, and its increased quantum efficiency. More specifically to this work, Timepix3 is a…

Timepix3 is a multi-purpose readout ASIC for hybrid pixel detectors. It can measure time and energy simultaneously by employing time-of-arrival (ToA) and time-over-threshold (ToT) techniques. Both methods are systematically affected by…

The hybrid pixel detector Timepix3 allows the measurement of the time and energy deposition of an event simultaneously in each 55 $\mu$m pixel, which makes Timepix3 a promising approach for a compact Compton camera. However, the angular…

仪器与探测器 · 物理学 2021-12-21 Jiaxing Wen , Xutao Zheng , Huaizhong Gao , Ming Zeng , Yuge Zhang , Minghai Yu , Yuchi Wu , Jirong Cang , Ge Ma , Zongqing Zhao

This paper describes an iterative method of per-pixel energy calibration of hybrid pixel detectors with GaAs:Cr sensor and Timepix readout chip. A convolution of precisely measured spectra of characteristic X-rays of different metals with…

Detector developments are currently enabling new capabilities in the field of transmission electron microscopy (TEM). We have investigated the limits of a hybrid pixel detector, Medipix3, to record dynamic, time varying, electron signals.…

仪器与探测器 · 物理学 2019-12-17 Gary W. Paterson , Raymond J. Lamb , Rafael Ballabriga , Dima Maneuski , Val O'Shea , Damien McGrouther

Timepix3 pixel detectors have demonstrated great potential for tracking applications. With $256\times 256$ pixels, 55 $\mathrm{\mu}$m pitch and improved resolution in time (1.56 ns) and energy (2 keV at 60 keV), they have become powerful…

数据分析、统计与概率 · 物理学 2022-02-09 Petr Mánek , Benedikt Bergmann , Petr Burian , Declan Garvey , Lukáš Meduna , Stanislav Pospíšil , Petr Smolyanskiy , Eoghan White

For the advancement of the understanding of timing systematics in pixelized readout chips and for the benefit of future fast timing detectors to aid 4D tracking technology in the HL-LHC, we have performed detailed studies of the timing…

仪器与探测器 · 物理学 2022-01-25 R. Geertsema

The hybrid architecture of the Timepix (TPX) family of detectors enables the use of different semiconductor sensors, most commonly silicon (Si), as well as high-density materials such as Cadmium Telluride (CdTe) or Gallium Arsenide (GaAs).…

This study investigates the response of Timepix3 semiconductor pixel detectors in proton beams of varying intensities, with a focus on FLASH proton therapy. Using the Timepix3 ASIC chip, we measured the spatial and spectral characteristics…

仪器与探测器 · 物理学 2024-10-02 C. Oancea , J. Šolc , C. Granja , E. Bodenstein , F. Horst , J. Pawelke , J. Jakubek

The Medipix3, a hybrid pixel detector with a silicon sensor, has been evaluated as a beam instrumentation device with proton and carbon ion measurements in the non-clinical research room (IR1) of MedAustron Ion Therapy Center. Protons…

仪器与探测器 · 物理学 2021-10-15 Navrit Johan Singh Bal , Claus Stefan Schmitzer , Andrea De Franco , Sascha Enke

In our article we report first quantitative measurements of imaging performance for the current generation of hybrid pixel detector, Medipix3, as direct electron detector. Utilising beam energies of 60 & 80 keV, measurements of modulation…

This work investigates the operational acquisition time limits of Timepix3 and Timepix2 detectors operated in frame mode for high-count rate of high deposited energy transfer particles. Measurements were performed using alpha particles from…

仪器与探测器 · 物理学 2024-09-27 C. Oancea , A. Resch , S. Barna , G. Magrin , L. Grevillot , D. Hladik , L. Marek , J. Jakubek , C. Granja

Timepix and Timepix3 are hybrid pixel detectors ($256\times 256$ pixels), capable of tracking ionizing particles as isolated clusters of pixels. To efficiently analyze such clusters at potentially high rates, we introduce multiple…

数据分析、统计与概率 · 物理学 2019-11-07 Petr Mánek , Benedikt Bergmann , Petr Burian , Lukáš Meduna , Stanislav Pospíšil , Michal Suk

The calibration process for the hybrid array pixel detector designed for High Energy Photon Source in China, we called HEPS-BPIX, is presented in this paper. Based on the threshold scanning, the relationship between energy and threshold is…

仪器与探测器 · 物理学 2021-09-01 Ye Ding , Zhenjie Li , Wei Wei , Jie Zhang , Hangxu Li , Yan Zhang , Xiaolu Ji , Peng Liu , Yuanbai Chen , Kejun Zhu

The M\"ONCH hybrid pixel detector, with a 25 \textmu m pixel pitch and fast charge-integrating readout, has demonstrated subpixel resolution capabilities for X-ray imaging and deep learning-based electron localization in electron…

Hybrid pixel sensor technology such as the Medipix3 represents a unique tool for electron imaging. We have investigated its performance as a direct imaging detector using a Transmission Electron Microscope (TEM) which incorporated a…

仪器与探测器 · 物理学 2017-12-06 J. A. Mir , R. Plackett , I. Shipsey , J. M. F. dos Santos

Two-photon absorption (TPA) enables three-dimensional characterisation of silicon detectors by generating charge carriers within a confined volume around a focused laser spot. In combination with pixelated readout systems, TPA measurements…

仪器与探测器 · 物理学 2026-04-20 Tianqi Gao

We have evaluated the imaging capabilities of the Timepix4 hybrid silicon pixel detector for 100 keV and 200 keV electrons in a Transmission Electron Microscope (TEM). Using the knife-edge method, we have measured the Modulation Transfer…

Charged particle therapy (CPT) is an advanced modality of radiation therapy which has grown rapidly worldwide, driven by recent developments in technology and methods of delivery. To ensure safe and high quality treatments, various…

仪器与探测器 · 物理学 2021-11-16 J. S. L. Yap , N. J. S. Bal , A. Kacperek , J. Resta López , C. P. Welsch

This work aims to characterize ultra high dose rate pulses (UHDpulse) electron beams using the hybrid semiconductor pixel detector. The Timepix3 (TPX3) ASIC chip was used to measure the composition, spatial, time, and spectral…

医学物理 · 物理学 2022-02-01 C. Oancea , C. Bălan , J. Pivec , C. Granja , J. Jakubek , D. Chvatil , V. Olsansky , V. Chiş
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