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High-rate, high-resolution single photon X-ray imaging: Medipix4, a large 4-side buttable pixel readout chip with high granularity and spectroscopic capabilities
/ Sriskaran, Viros (CERN) ; Alozy, Jerome (CERN) ; Ballabriga, Rafael (CERN) ; Campbell, Michael (CERN) ; Christodoulou, Pinelopi (CERN ; CTU, Prague) ; Heijne, Erik (CTU, Prague) ; Koukab, Adil (Ecole Polytechnique, Lausanne) ; Kugathasan, Thanushan (CERN) ; Llopart, Xavier (CERN) ; Piller, Markus (CERN ; Graz, Tech. U.) et al.
The Medipix4 chip is the latest member in the Medipix/Timepix family of hybrid pixel detector chips aimed at high-rate spectroscopic X-ray imaging using high-Z materials. It can be tiled on all 4 sides making it ideal for constructing large-area detectors with minimal dead area. [...]
arXiv:2310.10188.-
2024-02-16 - 15 p.
- Published in : JINST 19 (2024) P02024
Fulltext: 2310.10188 - PDF; Publication - PDF;
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Pixel detectors using single energetic quantum imaging: Past and future
/ Heijne, Erik H M (IEAP CTU, Prague ; CERN ; Nikhef, Amsterdam)
The early steps with 2-dimensional semiconductor detectors for particle physics experiments are briefly described. A comparison is made between monolithic devices, especially the CCD, and hybrid detectors, which combine a semiconductor sensor matrix with a separate ASIC in advanced CMOS technology. [...]
2023 - 16 p.
- Published in : PoS Pixel2022 (2023) 003
Fulltext: PDF;
In : International Workshop on Semiconductor Pixel Detectors for Tracking and Imaging (PIXEL 2022), Santa Fe, USA, 11 - 16 Dec 2022, pp.003
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4.
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The Timepix4 analog front-end design: Lessons learnt on fundamental limits to noise and time resolution in highly segmented hybrid pixel detectors
/ Ballabriga, R (CERN) ; Alozy, J A (CERN) ; Bandi, F N (CERN) ; Blaj, G (SLAC) ; Campbell, M (CERN) ; Christodoulou, P (CERN ; IEAP CTU, Prague ; Prague, Tech. U.) ; Coco, V (CERN) ; Dorda, A (CERN ; KIT, Karlsruhe, IPE) ; Emiliani, S (CERN ; Ecole Polytechnique, Lausanne) ; Heijhoff, K (Nikhef, Amsterdam) et al.
This manuscript describes the optimization of the front-end readout electronics for high granularity hybrid pixel detectors. The theoretical study aims at minimizing the noise and jitter. [...]
2023 - 17 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1045 (2023) 167489
Fulltext: PDF;
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5.
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Timepix4, a large area pixel detector readout chip which can be tiled on 4 sides providing sub-200 ps timestamp binning
/ Llopart, X (CERN) ; Alozy, J (CERN) ; Ballabriga, R (CERN) ; Campbell, M (CERN) ; Casanova, R (Barcelona, IFAE) ; Gromov, V (Nikhef, Amsterdam) ; Heijne, E H M (CERN ; IEAP CTU, Prague) ; Poikela, T (CERN) ; Santin, E (CERN) ; Sriskaran, V (CERN) et al.
Timepix4 is a 24.7 × 30.0 mm$^{2}$ hybrid pixel detector readout ASIC which has been designed to permit detector tiling on 4 sides. It consists of 448 × 512 pixels which can be bump bonded to a sensor with square pixels at a pitch of 55 µm. [...]
2022 - 15 p.
- Published in : JINST 17 (2022) C01044
Fulltext: PDF;
In : 22nd International Workshop on Radiation Imaging Detectors, Online, 27 Jun - 1 Jul 2021, pp.C01044
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Study of low power front-ends for hybrid pixel detectors with sub-ns time tagging
/ Llopart, X (CERN) ; Alozy, J (CERN) ; Ballabriga, R (CERN) ; Campbell, M (CERN) ; Egidos, N (CERN) ; Fernandez, J M (CERN) ; Heijne, E (CERN) ; Kremastiotis, I (CERN) ; Santin, E (CERN) ; Tlustos, L (CERN) et al.
Power consumption is always a concern in the design of readout chips for hybrid pixel
detectors. The Timepix3 chip is capable of dealing with up to 80 Mhits/cm$^2$/sec and tagging each hit
within a time bin of 1.56 ns. [...]
2019 - 9 p.
- Published in : JINST 14 (2019) C01024
In : 20th International Workshop On Radiation Imaging Detectors, Sundsvall, Sweden, 24 - 28 Jun 2018, pp.C01024
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7.
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Comparison of measurement and simulation of ATLAS cavern radiation background
/ Heijne, E (CERN ; IEAP CTU, Prague) ; Koi, T (SLAC) ; Leroy, C (Montreal U.) ; Oberlack, H (Munich, Max Planck Inst.) ; Pospisil, S (IEAP CTU, Prague) ; Sherwood, P (Imperial Coll., London) ; Shupe, M (Arizona U.) ; Solc, J (IEAP CTU, Prague) ; Suk, M (IEAP CTU, Prague) ; Takai, H (Brookhaven) et al.
Sixteen Medipix2 pixel detector based (MPX) devices were
operated at various positions within the ATLAS detector and cavern
continuously from early 2008 up to 2013. In addition to photons,
each MPX detector is capable to detect charged particles, and
neutrons as it is covered with a mask of converter materials
dividing its area into regions sensitive to thermal or fast
neutrons. [...]
2022 - 35 p.
- Published in : JINST 17 (2022) P01027
Fulltext: PDF;
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A miniaturized radiation monitor for continuous dosimetry and particle identification in space
/ Gohl, St (CTU, Prague ; Charles U., Prague (main)) ; Malich, M (CTU, Prague) ; Bergmann, B (Prague, Tech. U.) ; Burian, P (CTU, Prague ; Pilsen U.) ; Granja, C (Unlisted, CZ) ; Heijne, E (CTU, Prague ; CERN) ; Holik, M (CTU, Prague ; Pilsen U.) ; Jacubek, J (Unlisted, CZ) ; Janecek, J (CTU, Prague) ; Marek, L (Unlisted, CZ) et al.
A Miniaturized Radiation Monitor (MIRAM) has been developed for the continuous measurement of the radiation field composition and ionizing dose rates in near earth orbits. Compared to currently used radiation monitors, the presented device has an order of magnitude lower weight while being comparable in power consumption and functionality. [...]
2022 - 12 p.
- Published in : JINST 17 (2022) C01066
In : 22nd International Workshop on Radiation Imaging Detectors, Online, 27 Jun - 1 Jul 2021, pp.C01066
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Photon Counting Detectors for X-ray Imaging with Emphasis on CT
/ Ballabriga, R (CERN) ; Alozy, J (CERN) ; Bandi, F N (CNA, Seville) ; Campbell, M (CERN) ; Egidos, N (CERN) ; Fernandez-Tenllado, J M (CERN) ; Heijne, E H M (CERN ; IEAP CTU, Prague) ; Kremastiotis, I (CERN) ; Llopart, X (CERN) ; Madsen, B J (CERN) et al.
X-ray imaging is a widely used imaging modality in
the medical diagnostic field due to its availability, low cost, high
spatial resolution and fast image acquisition. X-ray photons in
standard X-ray sources are polychromatic [...]
2021 - 22 p.
- Published in : IEEE Trans. Rad. Plasma Med. Sci. 5 (2021) 1
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Registration of the transition radiation with GaAs detector: Data/MC comparison
/ Alozy, J (CERN) ; Belyaev, N ; Bergmann, B L (IEAP CTU, Prague) ; Billoud, T R V (IEAP CTU, Prague) ; Broulim, P (Pilsen, Coll. Mech. Elect. Eng.) ; Burian, P (IEAP CTU, Prague ; Pilsen, Coll. Mech. Elect. Eng.) ; Campbell, M (CERN) ; Chelkov, G (Dubna, JINR) ; Cherry, M (Louisiana State U.) ; Dachs, F (CERN) et al.
New developments of pixel detectors based on GaAs sensors offer effective registration of the transition radiation (TR) X-rays and perform simultaneous measurements of their energies and emission angles. This unique feature opens new possibilities for particle identification on the basis of maximum available information about generated TR photons. [...]
2020 - 8 p.
- Published in : J. Phys.: Conf. Ser. 1690 (2020) 012041
Fulltext: PDF;
In : 5th International Conference on Particle Physics and Astrophysics (ICPPA), Moscow, Russian Federation, 5 - 9 Oct 2020, pp.012041
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