Development of a Depleted Monolithic CMOS Sensor in a 150 nm CMOS Technology for the ATLAS Inner Tracker Upgrade

Wang, T.; Rymaszewski, P.; Barbero, M.; Değerli, Y.; Godiot, S.; Guilloux, F.; Hemperek, T.; Hirono, T.; Krüger, H.; Liu, J.; Orsini, F.; Pangaud, P.; Rozanov, A.; Wermes, N.

doi:10.1088/1748-0221/12/01/c01039

Cited by 34 publications

(38 citation statements)

References 15 publications

(19 reference statements)

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“…The LF-Monopix chip [6,7,10] is the successor to CCPD LF and LF-CPIX [4,6] development line in 150 nm LFoundry technology and the first to incorporate a full standalone fast readout. It consists of a 129x36 matrix of pixels with 50x250 µm 2 size, while its total size is 10x9.5 mm 2 .…”

Section: Lf-monopix Chip Designmentioning

confidence: 99%

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CMOS monolithic pixel sensors based on the column-drain architecture for the HL-LHC upgrade

Moustakas

Barbero

Berdalovic

et al. 2019

Nuclear Instruments and Methods in Physics Research Section A:

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Depleted Monolithic Active Pixel Sensors (DMAPS) constitute a promising low cost alternative for the outer layers of the ATLAS experiment Inner Tracker (ITk). Realizations in modern, high resistivity CMOS technologies enhance their radiation tolerance by achieving substantial depletion of the sensing volume. Two DMAPS prototypes that use the same "column-drain" readout architecture and are based on different sensor implementation concepts named LF-Monopix and TJ-Monopix have been developed for the High Luminosity upgrade of the Large Hardon Collider (HL-LHC) . LF-Monopix was fabricated in the LFoundry 150 nm technology and features pixel size of 50x250 µm 2 and large collection electrode opted for high radiation tolerance. Detection efficiency up to 99% has been measured after irradiation to 1 · 10 15 n eq /cm 2 . TJ-Monopix is a large scale (1x2 cm 2 ) prototype featuring pixels of 36x40 µm 2 size. It was fabricated in a novel TowerJazz 180 nm modified process that enables full depletion of the sensitive layer, while employing a small collection electrode that is less sensitive to crosstalk. The resulting small sensor capacitance (<= 3 f F) is exploited by a compact, low power front end optimized to meet the 25ns timing requirement. Measurement results demonstrate the sensor performance in terms of Equivalent Noise Charge (ENC) ≈ 11e − , threshold ≈ 300 e − , threshold dispersion ≈ 30 e − and total power consumption lower than 120 mW/cm 2 .

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Section: Lf-monopix Chip Designmentioning

confidence: 99%

“…To reduce crosstalk noise, the peak transient currents of the readout logic and therefore the injected current to the sensitive node must be minimized. To this end, techniques that include current steering logic and column bus readout though a current-limiting source follower have been used [10].…”

Section: Lf-monopix Chip Designmentioning

confidence: 99%

CMOS monolithic pixel sensors based on the column-drain architecture for the HL-LHC upgrade

Moustakas

Barbero

Berdalovic

et al. 2019

Nuclear Instruments and Methods in Physics Research Section A:

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“…The large detector capacitance will slow down the pre-amplifier and increase the noise, which can only be compensated by increasing the power. Moreover, such sensors are sensitive to the cross talk introduced by the in-pixel electronics to the sensing node, and many design efforts are required to mitigate this issue [13]. Figure 1(b), TJ-MonoPix uses a high-resistivity (> 1 kΩ·cm) P-type epitaxial layer as the sensitive layer, located on top of a highly P-doped wafer substrate.…”

Section: Sensor Conceptsmentioning

confidence: 99%

Depleted fully monolithic CMOS pixel detectors using a column based readout architecture for the ATLAS Inner Tracker upgrade

Wang¹,

Barbero²,

Berdalovic³

et al. 2018

J. Inst.

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A: Depleted monolithic active pixel sensors (DMAPS), which exploit high voltage and/or high resistivity add-ons of modern CMOS technologies to achieve substantial depletion in the sensing volume, have proven to have high radiation tolerance towards the requirements of ATLAS in the high-luminosity LHC era. Depleted fully monolithic CMOS pixels with fast readout architectures are currently being developed as promising candidates for the outer pixel layers of the future ATLAS Inner Tracker, which will be installed during the phase II upgrade of ATLAS around year 2025. In this work, two DMAPS prototype designs, named LF-MonoPix and TJ-MonoPix, are presented. LF-MonoPix was designed and fabricated in the LFoundry 150 nm CMOS technology, and TJ-MonoPix has been designed in the TowerJazz 180 nm CMOS technology. Both chips employ the same readout architecture, i.e. the column drain architecture, whereas different sensor implementation concepts are pursued. The design of the two prototypes will be described. First measurement results for LF-MonoPix will also be shown. K: Depleted monolithic CMOS pixels, particle tracking detectors (solid-state detectors), Front-end electronics for detector readout, VLSI circuit 1Corresponding author.

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“…LF-Monopix chip [1,2] is the first fully monolithic prototype of Depleted Monolithic Active Pixel Sensors (DMAPS) [3] implemented in the LFoundry 150 nm CMOS technology aimed for high radiation environment. Its design has kept significant features from its ancestor LF-CPIX [4].…”

Section: Introductionmentioning

confidence: 99%

Characterization of a depleted monolithic pixel sensors in 150 nm CMOS technology for the ATLAS Inner Tracker upgrade

Iguaz

Balli

Barbero

et al. 2019

Nuclear Instruments and Methods in Physics Research Section A:

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This work presents a depleted monolithic active pixel sensor (DMAPS) prototype manufactured in the LFoundry 150 nm CMOS process. DMAPS exploit high voltage and/or high resistivity inclusion of modern CMOS technologies to achieve substantial depletion in the sensing volume. The described device, named LF-Monopix, was designed as a proof of concept of a fully monolithic sensor capable of operating in the environment of outer layers of the ATLAS Inner Tracker upgrade in 2025 for the High Luminosity Large Hadron Collider (HL-LHC). This type of devices has a lower production cost and lower material budget compared to presently used hybrid designs. In this work, the chip architecture will be described followed by the characterization of the different preamplifier and discriminator flavors with an external injection signal and an iron source (5.9 keV x-rays).

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Development of a Depleted Monolithic CMOS Sensor in a 150 nm CMOS Technology for the ATLAS Inner Tracker Upgrade

Cited by 34 publications

References 15 publications

CMOS monolithic pixel sensors based on the column-drain architecture for the HL-LHC upgrade

CMOS monolithic pixel sensors based on the column-drain architecture for the HL-LHC upgrade

Depleted fully monolithic CMOS pixel detectors using a column based readout architecture for the ATLAS Inner Tracker upgrade

Characterization of a depleted monolithic pixel sensors in 150 nm CMOS technology for the ATLAS Inner Tracker upgrade

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