BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:The ATLAS ITk Strip Detector for the Phase-II LHC Upgrade DTSTART;VALUE=DATE-TIME:20230906T104000Z DTEND;VALUE=DATE-TIME:20230906T110000Z DTSTAMP;VALUE=DATE-TIME:20260714T132728Z UID:indico-contribution-518-2987@indico.tlabs.ac.za DESCRIPTION:Speakers: Jose Bernabeu (IFIC)\nThe ATLAS ITk Strip Detector f or the Phase-II LHC Upgrade\nATLAS-ITK Strip Collaboration\n\nThe inner de tector of the present ATLAS experiment has been designed and developed to function in the environment of the present Large Hadron Collider (LHC). At the ATLAS Phase-II Upgrade\, the particle densities and radiation levels will exceed current levels by a factor of ten. The instantaneous luminosit y is expected to reach unprecedented values\, resulting in up to 200 proto n-proton interactions in a typical bunch crossing. The new detectors must be faster and they need to be more highly segmented. The sensors used also need to be far more resistant to radiation\, and they require much greate r power delivery to the front-end systems. At the same time\, they cannot introduce excess material which could undermine tracking performance. For those reasons\, the inner tracker of the ATLAS detector was redesigned and will be rebuilt completely.\n\nThe ATLAS Upgrade Inner Tracker (ITk) cons ists of several layers of silicon particle detectors. The innermost layers will be composed of silicon pixel sensors\, and the outer layers will con sist of silicon microstrip sensors. This contribution focuses on the strip region of the ITk. The central part of the strip tracker (barrel) will be composed of rectangular short (~ 2.5 cm) and long (~5 cm) strip sensors. The forward regions of the strip tracker (end-caps) consist of six disks p er side\, with trapezoidal shaped sensors of various lengths and strip pit ches. After the completion of final design reviews in key areas\, such as Sensors\, Modules\, Front-End electronics\, and ASICs\, a large scale prot otyping program has been completed in all areas successfully. We present a n overview of the Strip System and highlight the final design choices of s ensors\, module designs and ASICs. We will summarise results achieved duri ng prototyping and the current status of pre-production and production on various detector components\, with an emphasis on QA and QC procedures.\n\ nhttps://indico.tlabs.ac.za/event/112/contributions/2987/ LOCATION: Auditorium 2 URL:https://indico.tlabs.ac.za/event/112/contributions/2987/ END:VEVENT BEGIN:VEVENT SUMMARY:Prototype validation for the CMS Inner Tracker Phase-2 upgrade DTSTART;VALUE=DATE-TIME:20230906T094000Z DTEND;VALUE=DATE-TIME:20230906T100000Z DTSTAMP;VALUE=DATE-TIME:20260714T132728Z UID:indico-contribution-518-2976@indico.tlabs.ac.za DESCRIPTION:Speakers: Nazar Bartosik (INFN Torino)\nThe **Inner Tracker** of the **CMS experiment** will be replaced during the Phase-2 upgrade in o rder to maintain nominal performance under the harsh conditions of HL-LHC. The main factors defining the new detector design are: \n- radation dose: 1 MeV neutron equivalent fluence of up to 2.3 x 10^16 neq/cm^2 and a tota l ionizing dose (TID) of up to 12 MGy (1.2 Grad)\; \n- projected hit rates of up to 3 GHz/cm^2\; \n- pile-up of 140-200 collisions per bunch crossin g. \nThe core components of the Inner Tracker making it compatible with th ese conditions are pixel sensors with smaller thickness and finer pitch\, as well as a new readout chip with improved radiation hardness.\n\nThis co ntribution will give an overview of the **Phase-2 upgrade of the CMS pixel tracker**\, focusing on the ongoing testing and validation of module prot otypes in preparation for large-scale production. This includes wafer-leve l testing of readout chips\, laboratory characterisation of assembled modu le prototypes and testing their performance with charged-particle beams.\n \nhttps://indico.tlabs.ac.za/event/112/contributions/2976/ LOCATION: Auditorium 2 URL:https://indico.tlabs.ac.za/event/112/contributions/2976/ END:VEVENT BEGIN:VEVENT SUMMARY:The ALICE Inner Tracking System Upgrade DTSTART;VALUE=DATE-TIME:20230906T092000Z DTEND;VALUE=DATE-TIME:20230906T094000Z DTSTAMP;VALUE=DATE-TIME:20260714T132728Z UID:indico-contribution-518-2955@indico.tlabs.ac.za DESCRIPTION:Speakers: Valerio Sarritzu (CERN)\nThe ALICE experiment at CER N is developing an upgrade of the three innermost layers of the Inner Trac king System (ITS3) vertexing detector\, to be installed during the Long Sh utdown 3 of the LHC (2026-28)[1]. It will consist of three truly cylindric al sensors wrapped around the beam pipe\, a concept that is enabled by the flexible nature of silicon when thinned down to less than 50 µm[2]. The three layers will be installed at a distance of 30\, 24\, and 18 mm from t he interaction point\, respectively — so close that a thinner beam pipe will also be installed. Full tracker half-layers will be covered by single wafer-scale CMOS monolithic active pixel bent detectors measuring up to $ ~10 \\times 26$ cm$^2$ in size\, manufactured in a commercial 65 nm techno logy developed by Tower Partners Semiconductor Co. (TPSCo). In order to bu ild detector elements larger than the reticle size\, a process called stit ching is used to join detector elements to build sensors up to 300 mm in l ength in a single wafer. Mechanical support is provided by carbon foam spa cers\, dramatically reducing the material budget in the region close to th e interaction point from the current $0.35\\%$ $X/X_0$ down to $0.05\\%$ $ X/X_0$ per layer. The new technology also provides improved power efficien cy below 20 mW/cm²\, only requiring the use of forced air for cooling. \n \nAt the core of the development\, the R&D process of the sensor ASIC pose s an entire new set of challenges mainly revolving around designing and va lidating the first wafer-scale silicon detector for high-energy physics. T o this purpose\, a submission named Engineering Run 1 has been delivered i n April 2023 that includes a large stitched detector prototype named Monol ithic Stitched Sensor (MOSS). MOSS is the first full-size stitched sensor demonstrator designed to validate manufacturing yield and feasibility of p ower and signal transmission. A custom readout system has been developed t o test the MOSS in all of its features and evaluate its functional yield a t a high level of granularity down to each single one of its 7 million pix els. This was a challenge in itself\, given the nearly 3000 connections ne eded to operate it and the expertise required to handle\, bond\, and mecha nically support such a huge and delicate sensor in a variety of use cases such as lab testing or test beams. This contribution will provide an overv iew of the detector\, the MOSS prototype\, and its test system\, including the early results of its characterization.\n\n[1]\nMusa\, L. et al.\,\n*L etter of Intent for an ALICE ITS Upgrade in LS3*\,\nCERN-LHCC-2019-018\; L HCC-I-034\n\n[2]\nAglieri Rinella\, G. et al.\,\n*First demonstration of i n-beam performance of bent Monolithic Active Pixel Sensors*\,\nNuclear Ins t. and Methods in Physics Research A **1028** 166280\n\nhttps://indico.tl abs.ac.za/event/112/contributions/2955/ LOCATION: Auditorium 2 URL:https://indico.tlabs.ac.za/event/112/contributions/2955/ END:VEVENT BEGIN:VEVENT SUMMARY:The ATLAS HL-LHC Upgrade Program DTSTART;VALUE=DATE-TIME:20230906T090000Z DTEND;VALUE=DATE-TIME:20230906T092000Z DTSTAMP;VALUE=DATE-TIME:20260714T132728Z UID:indico-contribution-518-2817@indico.tlabs.ac.za DESCRIPTION:Speakers: Claudia Gemme (INFN)\nWhile the on-going Run-3 data -taking campaign will provide twice the integrated proton-proton luminosi ty currently available at the LHC\, most of the data expected for the full LHC physics program will only be delivered during the HL-LHC phase. Fo r this\, the LHC will undergo an ambitious upgrade program to be able to deliver an instantaneous luminosity of $7.5\\times 10^{34}$ cm$^{-2}$ s$^{ -1}$\, allowing the collection of more than 3 ab$^{-1}$ of data at $\\sqrt {s}=$13.6 (14) TeV. This unprecedented data sample will allow ATLAS to pe rform several precision measurements to constrain the Standard Model Theor y (SM) in yet unexplored phase-spaces\, in particular in the Higgs sector\ , a phase-space only accessible at the LHC. To benefit from such a rich data-sample it is fundamental to upgrade the detector to cope with the cha llenging experimental conditions that include huge levels of radiation and pile-up events. The ATLAS upgrade comprises a completely new all-silicon tracker with extended rapidity coverage that will replace the current inne r tracker detector\; a redesigned trigger and data acquisition system for the calorimeters and muon systems allowing the implementation\n of a free- running readout system. Finally\, a new subsystem called High Granularity Timing Detector\, will aid the track-vertex association in the forward reg ion by incorporating timing information into the reconstructed tracks. A f inal ingredient\, relevant to almost all measurements\, is a precise deter mination of the delivered luminosity with systematic uncertainties below t he percent level. This challenging task will be achieved by collecting the information from several detector systems using different and complementa ry techniques.\nThis presentation will describe the ongoing ATLAS detector upgrade status and the main results obtained with the prototypes\, giving a synthetic\, yet global\, view of the whole upgrade project.\n\nhttps:// indico.tlabs.ac.za/event/112/contributions/2817/ LOCATION: Auditorium 2 URL:https://indico.tlabs.ac.za/event/112/contributions/2817/ END:VEVENT BEGIN:VEVENT SUMMARY:ALICE ITS3: how to integrate a large dimension MAPS sensor in a be nt configuration detector DTSTART;VALUE=DATE-TIME:20230906T102000Z DTEND;VALUE=DATE-TIME:20230906T104000Z DTSTAMP;VALUE=DATE-TIME:20260714T132728Z UID:indico-contribution-518-2796@indico.tlabs.ac.za DESCRIPTION:Speakers: Domenico Colella (INFN and University of Bari)\nThe ALICE collaboration foresees the replacement of the three innermost layers of the present inner tracking system (ITS2)\, during the LHC long shutdow n 3\, with a completely new system\, called ITS3. The expected performance will improve the pointing resolution of the tracking\, particularly at lo w transverse momentum\, hence significantly extending the heavy flavour ph ysics program of the experiment. \n\nThe full detector consists of two hal f-barrels\, each containing three sensors\, of the size up to ~26 cm x ~10 cm\, bent in a half-cylindrical shape\, spaced by 6 mm in a concentrical configuration\, covering a pseudo rapidity acceptance up to ±2.5 (layer 0 ). The development of a wafer size MAPS sensor is based on 65 nm technolog y\, using the stitching technique to allow for a sensor size exceeding the technologies reticle size. A sensor thickness of less than 50 um and the usage of extremely light support structures based on carbon foam and air c ooling allow reducing the material budget per layer to the order of 0.05% X/X_0 in the detector active area. Replacement of the beam pipe allows pla cing the first detector layer only 1.8 cm far from the interaction point. \n\nThe contribution will describe the global detector integration concept \, focusing on: the sensor bending procedure at different thicknesses to t he target radii\, the electrical interconnection techniques via wire-bondi ng and the choice of the best carbon foam\, in terms of material density a nd thermal dissipation properties\, as light mechanical supporting structu res. Details on the electrical characteristics and mechanical integration of the flexible circuits designed to provide power and communication with sensors will be discussed\, as well as findings from the study of the cool ing by air at the expected dissipated power. Moreover\, results on the eff ects of the bending on already available 180 nm sensors (ALPIDE)\, both in laboratory and in particle beams\, and on new 65 nm prototype sensor stru cture\, will be exposed. Finally\, the outcome of the assembly of the firs t working large-scale sensor detector prototype\, called super-ALPIDE\, wi ll be reported.\n\nhttps://indico.tlabs.ac.za/event/112/contributions/2796 / LOCATION: Auditorium 2 URL:https://indico.tlabs.ac.za/event/112/contributions/2796/ END:VEVENT BEGIN:VEVENT SUMMARY:ATLAS ITk Pixel Detector Overview DTSTART;VALUE=DATE-TIME:20230906T100000Z DTEND;VALUE=DATE-TIME:20230906T102000Z DTSTAMP;VALUE=DATE-TIME:20260714T132728Z UID:indico-contribution-518-2963@indico.tlabs.ac.za DESCRIPTION:Speakers: Koji Nakamura (CERN)\nIn the high-luminosity era of the Large Hadron Collider\, the instantaneous luminosity is expected to r each unprecedented values\, resulting in up to 200 proton-proton interacti ons in a typical bunch crossing. To cope with the resulting increase in oc cupancy\, bandwidth and radiation damage\, the ATLAS Inner Detector will b e replaced by an all-silicon system\, the Inner Tracker (ITk). The innermo st part of the ITk will consist of a pixel detector\, with an active area of about 13 m2. To deal with the changing requirements in terms of radiati on hardness\, power dissipation and production yield\, several silicon sen sor technologies will be employed in the five barrel and endcap layers. Pr ototype modules assembled with RD53A readout chips have been built to eval uate their production rate. Irradiation campaigns were done to evaluate th eir thermal and electrical performance before and after irradiation. A new powering scheme – serial – will be employed in the ITk pixel detector \, helping to reduce the material budget of the detector as well as power dissipation. This contribution presents the status of the ITk-pixel projec t focusing on the lessons learned and the biggest challenges towards produ ction\, from mechanics structures to sensors\, and it will summarize the l atest results on closest-to-real demonstrators built using module\, electr ic and cooling services prototypes.\n\nhttps://indico.tlabs.ac.za/event/11 2/contributions/2963/ LOCATION: Auditorium 2 URL:https://indico.tlabs.ac.za/event/112/contributions/2963/ END:VEVENT END:VCALENDAR