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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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2.
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New architecture for the analog front-end of Medipix4
/ Sriskaran, V (CERN ; Ecole Polytechnique, Lausanne) ; Alozy, J (CERN) ; Ballabriga, R (CERN) ; Campbell, M (CERN) ; Egidos, N (CERN) ; Fernandez-Tenllado, J M (CERN) ; Heijne, E (CERN ; IEAP CTU, Prague) ; Kremastiotis, I (CERN) ; Koukab, A (Ecole Polytechnique, Lausanne) ; Llopart, X (CERN) et al.
The Medipix4 chip is the latest member of the family of Medipix pixel detector readout chips aimed at high rate spectroscopic X-ray imaging. Unlike its predecessors, it will be possible to tile the chip on all 4 sides permitting seamless large area coverage. [...]
2020
- Published in : Nucl. Instrum. Methods Phys. Res., A 978 (2020) 164412
In : 12th international "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD), Hiroshima, Japan, 14 - 18 Dec 2019, pp.164412
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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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4.
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Induced radioactivity in ATLAS cavern measured by MPX detector network
/ Campbell, M (CERN) ; Heijne, E (IEAP CTU, Prague ; CERN) ; Leroy, C (Montreal U.) ; Nessi, M (CERN) ; Pospisil, S (IEAP CTU, Prague) ; Solc, J (IEAP CTU, Prague ; Czech Metrology Inst., Brno) ; Suk, M (IEAP CTU, Prague) ; Turecek, D (IEAP CTU, Prague ; CESNET, Praha) ; Vykydal, Z (IEAP CTU, Prague ; Czech Metrology Inst., Brno)
An application of the use of MPX detectors for the measurement of induced radioactivity in the Large Hadron Collider (LHC) experiment environment is presented. The sixteen ATLAS-MPX detectors measured the associated photon ambient dose equivalent rate (H$^*$(10) rate) in ATLAS due to the LHC operation. [...]
2019 - 13 p.
- Published in : JINST 14 (2019) P03010
Fulltext from Publisher: PDF;
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5.
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Penetration of ionizing radiation from ATLAS cavern into USA15 measured by MPX detectors
/ Campbell, M (CERN) ; Heijne, E (IEAP CTU, Prague ; CERN) ; Leroy, C (Montreal U.) ; Nessi, M (CERN) ; Pospisil, S (IEAP CTU, Prague) ; Solc, J (IEAP CTU, Prague ; Czech Metrology Inst., Brno) ; Suk, M (IEAP CTU, Prague) ; Turecek, D (IEAP CTU, Prague ; CESNET, Praha) ; Vykydal, Z (IEAP CTU, Prague ; Czech Metrology Inst., Brno)
The attenuation of the ionizing radiation through a concrete wall between the ATLAS Cavern UX15 and Service Cavern USA15 was measured during LHC collisions in 2012 with two ATLAS-MPX detectors. The detectors were mounted on either side of the wall separating UX15 and USA15. [...]
2019 - 8 p.
- Published in : JINST 14 (2019) P02020
Fulltext: PDF; Fulltext from Publisher: PDF;
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6.
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A simulator for Timepix-like pixel front-ends
/ Sune, R Ballabriga (CERN) ; Bromberger, H (DESY) ; Campbell, M (CERN) ; Cudie, X Llopart (CERN) ; Christodoulou, P (CERN ; IEAP CTU, Prague) ; Sriskaran, V (CERN) ; Tlustos, L (CERN ; IEAP CTU, Prague)
This work presents the development of a front-end simulation code for the Timepix3 readout chip [1], intended as digitizer stage in full detector simulation. The front-end electronics is modelled using an integrator stage and 3 parallel feedback loops with individually configurable time constants. [...]
2024 - 8 p.
- Published in : JINST 19 (2024) C03022
Fulltext: PDF;
In : 16th Topical Seminar on Innovative Particle and Radiation Detectors, Siena, Italy, 25 - 29 Sep 2023, pp.C03022
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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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8.
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X-ray imaging with gaseous detectors using the VMM3a and the SRS
/ Scharenberg, L (CERN ; Bonn U.) ; Bortfeldt, J (LMU Munich (main)) ; Brunbauer, F (CERN) ; Desch, K (Bonn U.) ; Garcia, F (Helsinki Inst. of Phys.) ; Hracek, M (CERN ; IEAP CTU, Prague) ; Janssens, D (CERN ; Vrije U., Brussels) ; Lisowska, M (CERN ; Wroclaw Tech. U.) ; Lupberger, M (Bonn U.) ; Muller, H (CERN) et al.
The integration of the VMM3a Application-Specific Integrated Circuit (ASIC) into RD51’s Scalable Readout System (SRS) provides a versatile tool for the readout of Micro-Pattern Gaseous Detectors (MPGDs). With its self-triggered high-rate readout, its analogue part that allows to get information on the deposited energy in the detector, and its so-called neighbouring-logic that allows to recover information on the charge distribution, this new system has features of particular interest for digital X-ray imaging. [...]
2021 - 15 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1011 (2021) 165576
Fulltext: PDF;
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10.
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