Sensors for the End-cap prototype of the Inner Tracker in the ATLAS Detector Upgrade

Benítez, Victor H.; Ullán, M.; Quirion, D.; Pellegrini, G.; Fleta, C.; Lozano, M.; Sperlich, D.; Wonsak, S.; Parzefall, U.; Mahboubi, K.; Kuehn, S.; Mori, R.; Jakobs, K.; Bernabéu, J.; García, C.; Lacasta, C.; Marco, R.; Rodriguez, D. Rodriguez; Santoyo, D.; Solaz, C.; Soldevila, U.; Ariza, D.; Bloch, I.; Díez, Sergio Cañas; Gregor, I. M.; Keller, J. S.; Lohwasser, K.; Poley, L.; Brenner, R.; Affolder, A. A.

doi:10.1016/j.nima.2016.07.023

Cited by 8 publications

(7 citation statements)

References 11 publications

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“…A detailed R&D programme covering design, assembly and evaluation of these prototypes has been conducted. Two different readout architectures have been investigated to optimize the assembly and readout of full-size petals [3][4][5]. The main results of this study, the assembly and evaluation of fully assembled petalets are reviewed in this paper, including a comprehensive comparison between the two readout options investigated.…”

Section: Jinst 13 T03004mentioning

confidence: 99%

Prototyping of petalets for the Phase-II upgrade of the silicon strip tracking detector of the ATLAS experiment

Kuehn

Rehnisch²,

Parzefall³

et al. 2018

J. Inst.

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A : In the high luminosity era of the Large Hadron Collider, the HL-LHC, the instantaneous luminosity is expected to reach unprecedented values, resulting in about 200 proton-proton interactions in a typical bunch crossing. To cope with the resultant increase in occupancy, bandwidth and radiation damage, the ATLAS Inner Detector will be replaced by an all-silicon system, the Inner Tracker (ITk). The ITk consists of a silicon pixel and a strip detector and exploits the concept of modularity. Prototyping and testing of various strip detector components has been carried out. This paper presents the developments and results obtained with reduced-size structures equivalent to those foreseen to be used in the forward region of the silicon strip detector. Referred to as petalets, these structures are built around a composite sandwich with embedded cooling pipes and electrical tapes for routing the signals and power. Detector modules built using electronic flex boards and silicon strip sensors are glued on both the front and back side surfaces of the carbon structure. Details are given on the assembly, testing and evaluation of several petalets. Measurement results of both mechanical and electrical quantities are shown. Moreover, an outlook is given for improved prototyping plans for large structures. K: Solid state detectors, Particle tracking detectors (Solid-state detectors), Si microstrip and pad detectors

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Section: Jinst 13 T03004mentioning

confidence: 99%

Prototyping of petalets for the Phase-II upgrade of the silicon strip tracking detector of the ATLAS experiment

Kuehn

Rehnisch²,

Parzefall³

et al. 2018

J. Inst.

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“…N-in-p strip sensors in wedge-shapes have been produced for the petalet modules at Centro Nacional de Microelectronica (IMB-CNM, CSIC), Barcelona, Spain. The substrates used are high-resistivity, Float-Zone silicon wafers with 300 µm thickness [5]. For test purposes, some of these sensors have embedded pitch adapters, where a second metal layer is used in order to integrate the signal routing to the ASICs into the sensor [12].…”

Section: Development and Investigation Of Modulesmentioning

confidence: 99%

Prototyping of hybrids and modules for the forward silicon strip tracking detector for the ATLAS Phase-II upgrade

Kuehn

Poley²,

Parzefall³

et al. 2017

J. Inst.

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For the High-Luminosity upgrade of the Large Hadron Collider an increased instantaneous luminosity of up to 7.5 ⋅ 1034 cm−2 s−1, leading to a total integrated luminosity of up to 3000 fb−1, is foreseen. The current silicon and transition radiation tracking detectors of the ATLAS experiment will be unable to cope with the increased track densities and radiation levels, and will need to be replaced. The new tracking detector will consist entirely of silicon pixel and strip detectors. In this paper, results on the development and tests of prototype components for the new silicon strip detector in the forward regions (end-caps) of the ATLAS detector are presented. Flex-printed readout boards with fast readout chips, referred to as hybrids, and silicon detector modules are investigated. The modules consist of a hybrid glued onto a silicon strip sensor. The channels on both are connected via wire-bonds for readout and powering. Measurements of important performance parameters and a comparison of two possible readout schemes are presented. In addition, the assembly procedure is described and recommendations for further prototyping are derived.

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“…All these layouts of EPA were added in a new full wafer mask which includes the two TOP sensors of the petalet prototype [4]. Each of these sensors has 2 strip rows and each strip row has 384 channels.…”

Section: Design Of the Embedded Pitch Adaptersmentioning

confidence: 99%

“…The EPA have been implemented on the sensors fabricated for the prototype of the End-cap part of the ATLAS Upgrade Inner Tracker (ITk), the "petalet" [4,5]. Initial results on these sensors, which had first-generation layout designs, have shown no indication of cross-talk or pick-up from laser tests [6].…”

Section: Introductionmentioning

confidence: 99%

Embedded pitch adapters: A high-yield interconnection solution for strip sensors

Ullán

Allport

Baca

et al. 2016

Nuclear Instruments and Methods in Physics Research Section A:

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a b s t r a c t A proposal to fabricate large area strip sensors with integrated, or embedded, pitch adapters is presented for the End-cap part of the Inner Tracker in the ATLAS experiment. To implement the embedded pitch adapters, a second metal layer is used in the sensor fabrication, for signal routing to the ASICs. Sensors with different embedded pitch adapters have been fabricated in order to optimize the design and technology. Inter-strip capacitance, noise, pick-up, cross-talk, signal efficiency, and fabrication yield have been taken into account in their design and fabrication. Inter-strip capacitance tests taking into account all channel neighbors reveal the important differences between the various designs considered. These tests have been correlated with noise figures obtained in full assembled modules, showing that the tests performed on the bare sensors are a valid tool to estimate the final noise in the full module. The full modules have been subjected to test beam experiments in order to evaluate the incidence of cross-talk, pick-up, and signal loss. The detailed analysis shows no indication of cross-talk or pick-up as no additional hits can be observed in any channel not being hit by the beam above 170 mV threshold, and the signal in those channels is always below 1% of the signal recorded in the channel being hit, above 100 mV threshold. First results on irradiated mini-sensors with embedded pitch adapters do not show any change in the interstrip capacitance measurements with only the first neighbors connected.

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Sensors for the End-cap prototype of the Inner Tracker in the ATLAS Detector Upgrade

Cited by 8 publications

References 11 publications

Prototyping of petalets for the Phase-II upgrade of the silicon strip tracking detector of the ATLAS experiment

Prototyping of petalets for the Phase-II upgrade of the silicon strip tracking detector of the ATLAS experiment

Prototyping of hybrids and modules for the forward silicon strip tracking detector for the ATLAS Phase-II upgrade

Embedded pitch adapters: A high-yield interconnection solution for strip sensors

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