ATLASpix3 : A high voltage CMOS sensor chip designed for ATLAS Inner Tracker

Prathapan, Mridula; Schimassek, Rudolf; Benoit, M.; Casanova, R.; Ehrler, F.; Meneses, Annie; Pangaud, P.; Sultan, D. M. S.; Figueras, E. Vilella; Weber, A.; Wong, W.C.; Zhang, Hui; Perić, I.

doi:10.22323/1.370.0010

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…The Mighty Tracker design centres around a new pixel ASIC -the MightyPix. It is based on the ATLASPix [4] and MuPix [5] family of chips, using the TSI 180 nm process. The ASIC is a…”

Section: Mightypixmentioning

confidence: 99%

The LHCb Mighty Tracker

Hennessy

2024

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2023)

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The LHCb detector is set to undergo a significant upgrade during the upcoming long shutdown 4 of the LHC. This upgrade will result in a nearly tenfold increase in instantaneous luminosity, reaching 1.5×10 34 cm 2 s −1 , with an integrated luminosity expected to rise from 50 fb −1 to 300 fb −1 . To effectively handle the elevated track densities, the downstream tracking stations will employ silicon pixel sensors in the inner region where particle fluences are highest. The MightyPix ASIC is a Monolithic HV-CMOS sensor based on the HV-MAPS families MuPix and ATLASPix, specifically designed to meet the requirements of LHCb. The Mighty Tracker silicon detector will covering an extensive active area of 18 m 2 will comprise over 2 × 10 9 pixels. The first iteration of the chip, along with its features and design are presented. Notable recent advances in the mechanical and electronic design of the silicon modules are also shown. Progress on prototyping developments, which focus on simulation, verification and FPGA emulation work are outlined. The latest beam test campaigns have yielded valuable insights into the radiation performance of precursor chips of the MightyPix. Noteworthy highlights are presented, accompanied by plans in place to maximise the chip's performance.

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“…The Mighty Tracker design centres around a new pixel ASIC -the MightyPix. It is based on the ATLASPix [4] and MuPix [5] family of chips, using the TSI 180 nm process. The ASIC is a…”

Section: Mightypixmentioning

confidence: 99%

The LHCb Mighty Tracker

Hennessy

2024

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2023)

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“…To demonstrate the suitability of this technology for the Mighty Tracker, prototypes developed for other experiments, namely MuPix10 [7] and ATLASPix3 [8], are investigated in terms of efficiency, time resolution, power dissipation, and temperature dependence (figure 5). The input from results of these large scale prototypes will be used for the design of MightyPix1.…”

Section: Mightypix Developmentmentioning

confidence: 99%

Towards MightyPix, an HV-MAPS for the LHCb Mighty Tracker upgrade

Hammerich

2022

J. Inst.

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The Mighty Tracker is a proposed upgrade to the downstream tracking system of LHCb for operations at luminosities of up to 1.5 × 1034 cm−2 s−1 starting with the LHC Run 5 data taking period. It foresees the replacement of the most central area of the current scintillating fibre tracker with High Voltage CMOS (HV-CMOS) pixel sensors. Due to the increased luminosity, occupancy will be too high for track reconstruction in the fibre tracker and the fibres would no longer withstand the radiation damage. HV-CMOS sensors have demonstrated a significant radiation tolerance and good performance making them an ideal choice of technology for the LHCb experiment. Monolithic Active Pixel Sensors (MAPS) fabricated in HV-CMOS processes provide fast charge collection via drift and allow the implementation of the readout on the same die as the sensitive volume. Due to the use of commercial processes, these sensors can be fabricated at low cost as no hybridisation with bump bonds is required. Since they are not fully depleted, the inactive volume can be reduced by thinning to achieve a total die thickness of 50 to 100 microns. A dedicated sensor called the MightyPix is developed for this programme. It is based on the HV-MAPS families MuPix and ATLASPix and tailored to the requirements of LHCb. To demonstrate the feasibility of this technology for the LHCb environment, prototypes have been irradiated. These sensors are tested in terms of efficiency, time resolution and power dissipation in temperature controlled environments.

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