BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:X-ARAPUCA as photon detection system of SBND DTSTART;VALUE=DATE-TIME:20230906T140000Z DTEND;VALUE=DATE-TIME:20230906T142000Z DTSTAMP;VALUE=DATE-TIME:20260714T134705Z UID:indico-contribution-524-3209@indico.tlabs.ac.za DESCRIPTION:Speakers: Ana Amelia Machado (UNICAMP)\nThe SBND (Short Baseli ne Near Detector) is the near detector of the short baseline neutrino prog ram (SBN) at Fermilab. SBND\, is located at 110m from the neutrino beam an d will collect an impressive statistic of neutrino-argon interactions. SBN D will also serve as test bed for new technologies for LAr-TPCs. In partic ular SBND implements different and complementary solutions for the detecti on of LAr scintillation light. LAr light is emitted in a narrow 10 nm band centered around 127 nm\, in the Vacuum Ultra-Violet and the shape of the signal is the sum of two exponential decays with very different characteri stic times (6 ns and 1\,500 ns). Scintillation light can be used to perfor m calorimetric measurements of the deposited energy\, T0 determination of the neutrino interaction and particle discrimination through pulse shape s tudies.\nThe Photon Detection System is a combination of traditional\, lar ge area (8") photomultipliers and X-ARAPUCAs\, a novel detector which is t he baseline choice of the Deep Underground Neutrino Experiment.\nThe PDS w ill collect not only the direct VUV LAr light\, but also the visible one\, shifted by the layer of Tetra-Phenyl Butadiene (TPB – emission waveleng th around 430nm) deposited on reflective foils installed on the cathode of the TPC. This will allow to test a new version of X-ARAPUCA which is sens itive to visible light\, and SBND is the only experiment which will operat e this version of X-ARAPUCA.\n\nhttps://indico.tlabs.ac.za/event/112/cont ributions/3209/ LOCATION: Meeting Room 2.41 - 2.43 URL:https://indico.tlabs.ac.za/event/112/contributions/3209/ END:VEVENT BEGIN:VEVENT SUMMARY:The Quality Assurance test setup for DUNE SiPMs characterization DTSTART;VALUE=DATE-TIME:20230906T142000Z DTEND;VALUE=DATE-TIME:20230906T144000Z DTSTAMP;VALUE=DATE-TIME:20260714T134705Z UID:indico-contribution-524-2803@indico.tlabs.ac.za DESCRIPTION:Speakers: Marco Guarise (University of Ferrara and INFN Ferrar a)\nThe Deep Underground Neutrino Experiment (DUNE) is an upcoming neutrin o physics experiment that will answer some of the most compelling question s in particle physics and cosmology. DUNE comprises a high-intensity neutr ino source located at Fermilab\, a massive far detector (FD) situated 1.5 km underground at the Sanford Underground Research Facility (SURF) in Sout h Dakota\, and a composite near detector (ND) installed just downstream of the neutrino source.\nThe DUNE FD exploits silicon photomultipliers (SiPM s) to detect scintillation photons produced by the interaction of charged particles in a liquid Argon time projection chamber (LArTPC). The FD is c omposed of four modules\, each with a fiducial mass of 10 kt. The first mo dule (HD-FD) is a LArTPC with electrons drifting horizontally toward modul ar Anode wire-Plane Assembly (APA)\, inside where the Photon Detection Sys tem (PDS) is located.\nThe SiPMs are photosensors consisting of a matrix o f single-photon avalanche diodes (SPAD) operating in the Geiger-Mueller re gion. Their high sensitivity and dynamic range\, as well as the possibilit y to fill large surfaces with high-granularity sensors\, makes them an ide al choice for the DUNE FD photodetection system.\nAn international consort ium of research groups is currently engaged in systematic quality assuranc e tests of all the sensors that will be installed in the HD-FD to control their specifications. A custom setup\, CACTUS (Cryogenic Apparatus for Con tinuous Tests Upon SiPMs)\, has been developed at Ferrara and Bologna Univ ersities-INFN sites to automatically perform the tests for a large number of sensors in parallel. This system can characterize up to 120 SiPM simult aneously both testing their mechanical and thermal resistance\, and measur ing the current-voltage curve for each sensor at room and cryogenic temper atures. These data allow to extrapolate the quenching resistor (R_q) and t he breakdown voltage (V_bd)\, the key operating parameters of the SiPMs. F urthermore\, the CACTUS test facility allows to perform dark noise assessm ent through a custom-made fixed threshold amplifier-discriminator system.\ nThe CACTUS system will operate in the next years in 5 laboratories (in Bo logna\, Ferrara\, Granada\, Milano Bicocca and Prague) allowing the test o f at least 120 sensor per day per site with the aim of quality assurance a nd determine the sensors operating voltage of the whole DUNE HD-FD product ions. Preliminary results of the measurements already performed on ~4000 s ensors for ProtoDUNE2-HD and in progress on the first batches of more than 25000 sensors for the DUNE HD-FD will be presented.\n\nhttps://indico.tla bs.ac.za/event/112/contributions/2803/ LOCATION: Meeting Room 2.41 - 2.43 URL:https://indico.tlabs.ac.za/event/112/contributions/2803/ END:VEVENT BEGIN:VEVENT SUMMARY:Timing and synchronisation of the DUNE far detector DTSTART;VALUE=DATE-TIME:20230906T150000Z DTEND;VALUE=DATE-TIME:20230906T152000Z DTSTAMP;VALUE=DATE-TIME:20260714T134705Z UID:indico-contribution-524-3188@indico.tlabs.ac.za DESCRIPTION:Speakers: Stoyan Trilov (University of Bristol)\nThe Deep Unde rground Neutrino Experiment (DUNE) will be composed of two neutrino detect ors positioned in an intense neutrino beam\, originating at the Fermi Nati onal Accelerator Laboratory (FNAL). The near detector (ND) will be located at FNAL\, and will characterise the neutrino beam. The far detector (FD) will be 1300 km from FNAL\, and 1.5 km underground. The FD is segmented in to four liquid argon time projection chamber (LArTPC) modules\, each with a mass of 17kt. The DUNE timing system (DTS) will distribute a phase-align ed clock and synchronised timestamps to all FD electronics. Alongside cloc k and timestamps\, the DTS will be able to distribute fast fixed-latency m essages\, allowing synchronised operations across the large DUNE FD\, e.g. calibration laser firing. The system is expected to achieve sub-ns timest amp synchronisation within a FD module. High reliability through system re dundancy in a hot-swap configuration is a fundamental feature of the syste m's architecture. The built-in redundancy will help minimise downtime\, an d allow cross-checking of synchronisation. An overview of the DTS hardware \, firmware\, software\, and system level functionality is given\, as well as summary of the DTS prototype operations at the ProtoDUNE detectors hos ted at the European Organization for Nuclear Research (CERN).\n\nhttps://i ndico.tlabs.ac.za/event/112/contributions/3188/ LOCATION: Meeting Room 2.41 - 2.43 URL:https://indico.tlabs.ac.za/event/112/contributions/3188/ END:VEVENT BEGIN:VEVENT SUMMARY:Testing of back-end card(BEC) for JUNO experiment DTSTART;VALUE=DATE-TIME:20230906T144000Z DTEND;VALUE=DATE-TIME:20230906T150000Z DTSTAMP;VALUE=DATE-TIME:20260714T134705Z UID:indico-contribution-524-2995@indico.tlabs.ac.za DESCRIPTION:Speakers: Feng Gao ()\nJiangmen Underground Neutrino Observato ry (JUNO) is a neutrino experiment currently under construction in China. Its main goal is to determine the mass hierarchy of neutrinos\, and it wil l do this by detecting the antineutrinos produced by nuclear reactors usin g a large liquid scintillator (LS) volume. The JUNO detector will be instr umented with around 20\,000 large photomultiplier tubes(20-inch)\, and the JUNO electronics readout system is composed of two parts: (i) the underwa ter front-end electronics system and (ii) the back-end electronics system. \nThe back-end card(BEC) is a critical component of the JUNO experiment's back-end electronics system\, as it links approximately 7\,000 underwater electronics boxes to the trigger system. Each BEC is comprised of a base b oard\, 6 mezzanine cards and 1 TTIM (Trigger/Timing interface Mezzanine) m odule\, located inside a mechanical box. A total of 180 boxes have been pr oduced and installed at the JUNO site. This presentation will focus on the testing of the BECs\, which include both self-tests and combined tests.\n \nhttps://indico.tlabs.ac.za/event/112/contributions/2995/ LOCATION: Meeting Room 2.41 - 2.43 URL:https://indico.tlabs.ac.za/event/112/contributions/2995/ END:VEVENT BEGIN:VEVENT SUMMARY:The performance of atmospheric neutrino identification in JUNO DTSTART;VALUE=DATE-TIME:20230906T154000Z DTEND;VALUE=DATE-TIME:20230906T160000Z DTSTAMP;VALUE=DATE-TIME:20260714T134705Z UID:indico-contribution-524-2979@indico.tlabs.ac.za DESCRIPTION:Speakers: Yongpeng Zhang ()\nThe Jiangmen Underground Neutrino Observatory (JUNO) with a 20 kton liquid scintillator (LS) detector is a multi-purpose underground experiment. The neutrino mass ordering (NMO) in JUNO can be determined by measuring atmospheric neutrinos with the matter effect (MSW) and measuring the spectrum modification of reactor anti-neutr inos induced by oscillations with ∆M$_{31}$$^{2}$\, respectively. The tw o independent methods are complementary\, and the joint analysis can great ly increase the NMO sensitivity. Considering the signal efficiency and pur ity\, flavor identification is crucial to the NMO sensitivity of atmospher ic neutrino. Based on the high detection efficiency of a LS detector for n eutrons and Michel electrons compared with other detector like a water Cer enkov detector\, we can make full use of these particle’s distribution i nformation for particle identification (PID)\, particularly for the identi fication of neutrinos and anti-neutrinos. The features extracted from the waveforms of the photomultiplier tubes are also used. The preliminary PID strategy and results of the atmospheric neutrino based on multiple machine learning methods will be presented in this contribution.\n\nhttps://indic o.tlabs.ac.za/event/112/contributions/2979/ LOCATION: Meeting Room 2.41 - 2.43 URL:https://indico.tlabs.ac.za/event/112/contributions/2979/ END:VEVENT BEGIN:VEVENT SUMMARY:Development of Hit Finding Algorithms for the DUNE Experiment Usin g SiMD Parallel Processing DTSTART;VALUE=DATE-TIME:20230906T152000Z DTEND;VALUE=DATE-TIME:20230906T154000Z DTSTAMP;VALUE=DATE-TIME:20260714T134705Z UID:indico-contribution-524-2813@indico.tlabs.ac.za DESCRIPTION:Speakers: Adam Abed Abud (CERN)\nThe DUNE experiment will star t operating at the end of this decade\, with the objective of measuring in detail neutrino oscillations\, and other rare physics processes. Four far detectors modules (17 kt each) will be installed at SURF\, in South Dakot a\, about 1.5 km underground. The data selection system of one DUNE far de tector module's Time Projection Chamber (TPC) relies on the real-time proc essing of approximately half a million channels sampled at 2 MHz. Data for each channel are analyzed to identify activity incompatible with noise (h it finding). The hits are then clustered and processed further to form a t rigger decision. The aim of the DUNE data selection system is to reduce th e data volume produced by the detector electronics by four orders of magni tude. In this paper\, after the description of the application design\, we present the implementation and tuning of multiple software-based hit find ing algorithms. The high rate of incoming data (~20 GB/s per host) is sust ained through the employment of SiMD parallel processing\, using algorithm implementations based on the AVX2 instruction set. We show the obtained p erformance comparing it across multiple CPU hardware platforms and conclud e by illustrating live results from recent tests at a setup using prototyp e detector components.\n\nhttps://indico.tlabs.ac.za/event/112/contributio ns/2813/ LOCATION: Meeting Room 2.41 - 2.43 URL:https://indico.tlabs.ac.za/event/112/contributions/2813/ END:VEVENT END:VCALENDAR