BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Powering SiPMs and front-end electronics in HEP detectors: the ALD O2 ASIC DTSTART;VALUE=DATE-TIME:20230905T160000Z DTEND;VALUE=DATE-TIME:20230905T162000Z DTSTAMP;VALUE=DATE-TIME:20260410T231305Z UID:indico-contribution-515-2984@indico.tlabs.ac.za DESCRIPTION:Speakers: Paolo Carniti (INFN and University of Milano Bicocca )\nSiPMs (also known as MPPCs) are becoming widely used in HEP experiments thanks to their excellent photon counting performance\, compactness\, and immunity to magnetic fields.\nPowering these devices\, apparently simpler than high-voltage photosensors\, still poses several challenges due to th e dependence of their performance on bias voltage and the significant incr ease of leakage current after radiation damage.\nTo help integrate SiPMs i n HEP detectors\, we designed the ALDO2 ASIC\, a rad-hard\, multi-function \, adjustable\, low dropout linear regulator in onsemi I3T80 0.35 $\\mu$m HV CMOS technology.\nALDO2 allows for precise and stable regulation of the bias voltage of SiPM arrays\, as well as its adjustment using an external DAC.\nBy providing a mirrored copy of the output current\, the chip enabl es on-detector I-V curve characterization and fine-tuning of the SiPMs' wo rking points as radiation damage accumulates.\nThe chip also features auxi liary low-dropout linear regulators to filter and stabilize the supply vol tage of the front-end chips\, making it a complete power management soluti on for SiPM-based readout systems in HEP detectors\, like the CMS Barrel T iming Layer (BTL) and the High-granularity Calorimeter (HGCAL).\nIn this c ontribution\, we present a general overview of the chip and the powering s cheme adopted\, together with selected measurements and radiation hardness qualification of samples from the final production.\n\nhttps://indico.tla bs.ac.za/event/112/contributions/2984/ LOCATION: Meeting Room 2.44 - 2.46 URL:https://indico.tlabs.ac.za/event/112/contributions/2984/ END:VEVENT BEGIN:VEVENT SUMMARY:TID effects study on the monitoring system of the RD53 chip DTSTART;VALUE=DATE-TIME:20230905T154000Z DTEND;VALUE=DATE-TIME:20230905T160000Z DTSTAMP;VALUE=DATE-TIME:20260410T231305Z UID:indico-contribution-515-3174@indico.tlabs.ac.za DESCRIPTION:Speakers: Mohsine MENOUNI (Aix Marseille Univ\, CNRS/IN2P3\, C PPM\, Marseille\, France)\nThe High-Luminosity LHC upgrade aims to increas e the instantaneous luminosity of the LHC machine to a nominal value of $5 \\times10^{34}\\:cm^{-2}s^{-1}$. During the Long Shutdown 3 (2026-2028)\, ATLAS and CMS silicon tracking systems will be entirely replaced and the m ain design goals include the capability to deal with high hit and data rat es\, the increase in granularity\, and improved radiation tolerance to cop e with fluences of up to $2\\times10^{16 }\\:n_{eq}/cm^2$ and a Total Ioni zing Dose (TID) of up to 1 Grad.\n\nThe RD53 collaboration has been worki ng since 2014 on the development of pixel chips for the future CMS and ATL AS upgrades. This work has recently led to the development and submission of the ATLAS RD53 production chip (ITkPixV2) which is using the 65 nm CMOS process and containing 153600 pixels of $50~\\mu m \\times 50~\\mu m$.\n\ nSeveral TID test campaigns with Xray sources were already done on the ful l-size pre-production chip under low temperature (same conditions as for t he inner detector) and have shown that the chip continues to work correctl y up to 1 Grad. However\, these tests have shown that some analog voltage and current values can shift by about 8%. It is therefore important to mon itor the different sensitive voltages and currents in the chip in order to measure the variation and possibly adjust them if necessary.\n\nThe monit oring system implemented in the RD53 front-end chip is based on a 12-bit A DC associated with a multi-channel multiplexer. It allows the digitization of different sensitive parameters in the chip\, particularly the voltages issued from the on-chip temperature sensors required for the off-line tem perature calculation. The dependence of the ADC reference voltage ($V_{ref ADC}$) on the total ionizing dose results in a high drift of the temperatu re measured through the ADC\, making the measurement unacceptable. \n\nA n ew temperature measurement approach not dependent on the $V_{refADC}$ shif t is proposed. It provides more precise temperature measurement even at hi gh radiation levels. Based on this\, a correction method for the $V_{refAD C}$ value is foreseen to be applied regularly during the operation of the pixel detector to increase the accuracy for the digitization of voltages o r currents in the RD53 chip.\n\nThe purpose of this presentation is to giv e a general overview of the RD53 chip architecture\, in particular the mon itoring system implemented inside the chip. Next\, the TID test results fo r the monitoring bloc are presented to show that the shift of the $V_{refA DC}$ due to the TID has the most significant impact on the measurement acc uracy and results in an unacceptable loss of accuracy for temperature meas urement. Afterwards\, the new temperature measurement approach that does n ot use the $V_{refADC}$ value is presented to show that better accuracy ca n be achieved. Finally\, the method to be followed to ensure more accurate voltages and currents monitoring despite dose effects on the ADC referenc e voltage is shown and discussed.\n\nhttps://indico.tlabs.ac.za/event/112/ contributions/3174/ LOCATION: Meeting Room 2.44 - 2.46 URL:https://indico.tlabs.ac.za/event/112/contributions/3174/ END:VEVENT BEGIN:VEVENT SUMMARY:HKROC: a modern integrated front-end ASIC to readout photomultipli er tubes for Cherenkov-based experiments DTSTART;VALUE=DATE-TIME:20230905T152000Z DTEND;VALUE=DATE-TIME:20230905T154000Z DTSTAMP;VALUE=DATE-TIME:20260410T231305Z UID:indico-contribution-515-3107@indico.tlabs.ac.za DESCRIPTION:Speakers: Rudolph Rogly (CNRS)\nThe HKROC ASIC was originally designed to readout the photomultiplier tubes for the Hyper-Kamiokande exp eriment. HKROC is an auto-triggered very versatile and innovative ASIC cap able of readout a large number of channels while meeting very stringent re quirements in terms of noise\, time & charge resolution while sustaining v ery high hit-rate and low-power consumption.\nEach HKROC channel features a low-noise preamplifier and shapers\, a 10-bit successive approximation A nalog-to-Digital Converter (SAR-ADC) for the charge measurement (up to 250 0 pC) and a Time-to-Digital Converter (TDC) for the Time-of-Arrival (ToA) measurement with 25 ps binning. The key feature of HKROC is its “wavefor m digitization” capability: it dynamically opens acquisition windows for internal digitization. It enables new possibilities in terms of pulse-sha pe analysis and double pulse triggering with a low dead time (down to 10 n s)\, while preserving a very low power consumption compared to standard fl ash-ADC. Moreover\, HKROC is equiped with an adaptive readout which allows to cope with very high rate events such as close supernovae (Betelgeuse …) for neutrino based experiment.\nThe presentation will describe the AS IC architecture and the experimental results of the second HKROC prototype received in December 2022.\n\nhttps://indico.tlabs.ac.za/event/112/contri butions/3107/ LOCATION: Meeting Room 2.44 - 2.46 URL:https://indico.tlabs.ac.za/event/112/contributions/3107/ END:VEVENT BEGIN:VEVENT SUMMARY:Chips for calibration of the ATLAS LAr calorimeter DTSTART;VALUE=DATE-TIME:20230905T150000Z DTEND;VALUE=DATE-TIME:20230905T152000Z DTSTAMP;VALUE=DATE-TIME:20260410T231305Z UID:indico-contribution-515-3189@indico.tlabs.ac.za DESCRIPTION:Speakers: Gisele Martin-Chassard (IN2P3)\nThe LHC upgrade at CERN implies an increase in the dynamic range for the electromagnetic liq uid argon (Lar) calorimeter of the ATLAS detector\, a change in the power supply system and an increase of the luminosity and thus of radiation effe cts on detectors. This requires completely redoing the Lar calibration sys tem. The new system should provide a 16-bit range current (from 625 nA to 320 mA) with 1‰ accuracy while being radiation tolerant. The former oper ating principle is used: a very precise DC current is stored in an inducto r when this current is switched off it generates a precise pulse injected in the readout electronics. This is achieved by two different chips: the f irst one\, in TSMC 130nm technology\, provides the 16-bit current DAC as w ell as the calibration management system (I2C slow control and commands to obtain pulses)\; the second chip\, in XFAB 180nm technology\, embeds four high-frequency switches (1GHz) to generate the fast pulses for calibratio n. This talk will present these two chips in details and give measurement results as well as irradiation test results for both technologies.\n\nhttp s://indico.tlabs.ac.za/event/112/contributions/3189/ LOCATION: Meeting Room 2.44 - 2.46 URL:https://indico.tlabs.ac.za/event/112/contributions/3189/ END:VEVENT BEGIN:VEVENT SUMMARY:TIGER ASIC as a candidate front end electronics solution for futur e Straw Trackers DTSTART;VALUE=DATE-TIME:20230905T144000Z DTEND;VALUE=DATE-TIME:20230905T150000Z DTSTAMP;VALUE=DATE-TIME:20260410T231305Z UID:indico-contribution-515-3153@indico.tlabs.ac.za DESCRIPTION:Speakers: Vitaly Bautin (JINR)\nA custom Application Specific Integrated Circuit (ASIC) TIGER (Turin Integrated Gem Electronics for Read out) is capable of simultaneous precise measurements of both the charge an d time characteristics of signals in gaseous detectors. Flexibility of TIG ER operation parameters makes it attractive to be evaluated as a front-end electronics solution for Straw-based Trackers of future High Energy and N eutrino Physics experiments.\n\nWe present first performance measurements done with Straw drift tubes operated with the TIGER-based readout. The res ults obtained with the SPS muon beam at CERN allows us to explore the adva ntages and limitations of the TIGER readout option for Straw tubes. An ove rview of possible further development is presented.\n\nhttps://indico.tlab s.ac.za/event/112/contributions/3153/ LOCATION: Meeting Room 2.44 - 2.46 URL:https://indico.tlabs.ac.za/event/112/contributions/3153/ END:VEVENT BEGIN:VEVENT SUMMARY:Future ASICs for calorimetry at OMEGA DTSTART;VALUE=DATE-TIME:20230905T142000Z DTEND;VALUE=DATE-TIME:20230905T144000Z DTSTAMP;VALUE=DATE-TIME:20260410T231305Z UID:indico-contribution-515-2806@indico.tlabs.ac.za DESCRIPTION:Speakers: Christophe de LA TAILLE (OMEGA CNRS/IN2P3 and Ecole Polytechnique)\nCalorimeters have recently evolved to provide much more gr anularity in order to better identify particles inside showers and improve the energy resolution\, in particular for jets. “Imaging calorimetry” has been studied in detail by the CALICE collaboration since the mid 2000 s and more recently chosen by the CMS experiment to equip its endcap calor imeter. Imaging calorimetry increases by one or two orders of magnitude t he number of channels and requires readout electronics embedded onto the d etectors. Also recently\, timing information with a few tens of picosecond s accuracy has been added to the energy measurements and provides valuable supplementary information. All these improvements have been made possible by high performance readout ASICs\, handling the large calorimeter dynami c range with high speed low noise performance while operating at low power (~20 mW/ch). In the future\, the granularity will continue to increase\, requiring even lower power operation. This will be achieved by further p rogress on the analog front-end and also advanced on-chip data processing. \nOMEGA laboratory has been developing the SKIROC/SPIROC/HARDROC ASIC fami ly for the CALICE readout and more recently HGCROC for CMS HGCAL\, which i s now undergoing its final tests before fabrication for the HL LHC. Their design and performance will be recalled and the architectural choices and prototypes in design for the future experiments (EIC\, ILC\, FCC…) will be presented.\n\nhttps://indico.tlabs.ac.za/event/112/contributions/2806/ LOCATION: Meeting Room 2.44 - 2.46 URL:https://indico.tlabs.ac.za/event/112/contributions/2806/ END:VEVENT BEGIN:VEVENT SUMMARY:TEMPUS: a Timepix4-based readout system for photon science DTSTART;VALUE=DATE-TIME:20230905T140000Z DTEND;VALUE=DATE-TIME:20230905T142000Z DTSTAMP;VALUE=DATE-TIME:20260410T231305Z UID:indico-contribution-515-2790@indico.tlabs.ac.za DESCRIPTION:Speakers: Jonathan Correa (DESY)\nA readout system for the Tim epix4 timestamping pixel ASIC\, TEMPUS\, is being developed for photon sci ence experiments. Compared to current systems\, this will have higher time resolution (in the ns regime for silicon sensors and X-ray applications) and much higher event rate capability (around Mhit/mm2/s)\, requiring deve lopment of high-data-rate board designs and firmware. Moreover\, when work ing in the photon counting mode\, higher frame rates than currently availa ble systems will be achievable (40kfps). The first image from a single chi p has been obtained using a radioactive source. Also multi-chip modules ar e under development with the idea of covering large areas while reducing g aps between sensors. In this context\, TSV technology (fully supported by the ASIC) is expected to be used.\n\nhttps://indico.tlabs.ac.za/event/112/ contributions/2790/ LOCATION: Meeting Room 2.44 - 2.46 URL:https://indico.tlabs.ac.za/event/112/contributions/2790/ END:VEVENT END:VCALENDAR