BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:The high-performance DIRC detector for ePIC Detector at the future Electron-Ion Collider DTSTART;VALUE=DATE-TIME:20230905T104000Z DTEND;VALUE=DATE-TIME:20230905T110000Z DTSTAMP;VALUE=DATE-TIME:20260714T125707Z UID:indico-contribution-544-3232@indico.tlabs.ac.za DESCRIPTION:Speakers: Greg Kalicy (CUA)\nThe next frontier project of nucl ear physics in the United States will be the Electron-Ion Collider (EIC)\, planned to be built in the Brookhaven National Laboratory (BNL). Excellen t particle identification (PID) is one of the key requirements for the EIC central detector. Identification of the hadrons in the final state is cri tical to study how different quark flavors contribute to nucleon propertie s. A detector using the Detection of Internally Reflected Cherenkov light (DIRC) principle\, with a radial size of only 7-8 cm\, was selected to me et these requirements. The high-performance DIRC (hpDIRC) detector is bein g developed through multiple R&D programs. It will extend the momentum cov erage well beyond the state-of-the-art 3 standard deviations or more separ ation of π/K up to at least 6 GeV/c\, p/K up to 10 GeV/c\, and low moment um e/π. Key components of the hpDIRC detector are a 3-layer compound lens and small pixel-size photosensors. This contribution will present major d evelopments in the DIRC R&D programs\, with a focus on developing and vali dating the radiation hard 3-layer lens\, investigating the reuse of BaBar DIRC bars\, and the hpDIRC full system prototype program with Cosmic Ray T elescope at Stony Brook.\n\nhttps://indico.tlabs.ac.za/event/112/contribut ions/3232/ LOCATION: Meeting Room 2.44 - 2.46 URL:https://indico.tlabs.ac.za/event/112/contributions/3232/ END:VEVENT BEGIN:VEVENT SUMMARY:Waveform calibration of the SND electromagnetic calorimeter DTSTART;VALUE=DATE-TIME:20230905T102000Z DTEND;VALUE=DATE-TIME:20230905T104000Z DTSTAMP;VALUE=DATE-TIME:20260714T125707Z UID:indico-contribution-544-3207@indico.tlabs.ac.za DESCRIPTION:Speakers: Ilya Surin ()\nThe Spherical Neutral Detector (SND) is intended for the study electron-positron annihilation processes operati ng at VEPP-2000 e+e- collider\, which is located at Novosibirsk\, Russia. The main part of the SND detector is a three-layer electromagnetic calorim eter (EMC). \n The EMC is equipped with spectrometric channel\, which pro vides measurement of the calorimeter signal arrival time and amplitude wit h 1 ns and 250 keV resolutions\, respectively. It's necessary for providin g reliable detection of low-speed anti-neutrons\, which are produced in $ e^+e^- \\to n \\overline{n} $ reaction near threshold. \n The algorithm of determination of signal parameters (time\, amplitude) is based on inva riability of the signal waveform. The waveform calibration procedure using generator signals and Bhabha scattering events is presented here.\n\nhttp s://indico.tlabs.ac.za/event/112/contributions/3207/ LOCATION: Meeting Room 2.44 - 2.46 URL:https://indico.tlabs.ac.za/event/112/contributions/3207/ END:VEVENT BEGIN:VEVENT SUMMARY:Energy response function and calibration of the FOOT calorimeter. DTSTART;VALUE=DATE-TIME:20230905T100000Z DTEND;VALUE=DATE-TIME:20230905T102000Z DTSTAMP;VALUE=DATE-TIME:20260714T125707Z UID:indico-contribution-544-2981@indico.tlabs.ac.za DESCRIPTION:Speakers: Alessandro Valetti (Unito)\nThe FOOT experiment aims at measuring the differential cross sections for the production of second ary fragments in interactions between light ions (C\, O) and hydrogen-enri ched targets\, with beam energies of up to 400 MeV/u\, a topic relevant fo r the optimization of particle therapy treatments\, which can only be addr essed in inverse kinematics [1]. By extending the energy range up to 800 M eV/u\, the experiment will also collect valuable data for understanding fr agmentation processes relevant for the design of spacecraft shielding [2]. \n\nThe experiment\, whose construction is almost completed\, aims at ide ntifying heavy fragments by measuring their momentum\, kinetic energy\, an d time of flight with high resolution: 5%\, 2% and <100 ps respectively. T he kinetic energy will be measured with a calorimeter detector made of 320 BGO crystals coupled to SiPM photodetectors\, covering a dynamic range fr om tens of MeVs to about 10 GeV.\n\nData takings\, aiming at measuring the response function for different ions and at optimizing crystal intercalib ration\, have been conducted at HIT (Heidelberg\, Germany)\, and at CNAO ( Pavia\, Italy)\, using 12 modules of 3x3 crystals each. The energy respons e between 50 and 430 MeV/u is consistent with a modified Birks function fo r all the ions\, although the parameters depend on Z. The parameters depen dency on Z has been measured\, allowing to reconstruct the fragment energy . The integrated system resolution is\, as expected\, well below 2% over t he 100-300 MeV/u range.\n\n1. *Battistoni G\, Toppi M\, Patera V and The F OOT Collaboration (2021) Measuring the Impact of Nuclear\nInteraction in P article Therapy and in Radio Protection in Space: the FOOT Experiment. Fro nt. Phys. 8:568242.\ndoi: 10.3389/fphy.2020.568242*\n2. *M. Durante and F. Cucinotta\, “Physical basis of radiation protection in space travel\, ” Rev. Mod. Phys.\, vol. 83\,\nno. 4\, p. 1245\, 2011.*\n\nhttps://indic o.tlabs.ac.za/event/112/contributions/2981/ LOCATION: Meeting Room 2.44 - 2.46 URL:https://indico.tlabs.ac.za/event/112/contributions/2981/ END:VEVENT BEGIN:VEVENT SUMMARY:ASHIPH Cherenkov counters in the KEDR experiment DTSTART;VALUE=DATE-TIME:20230905T090000Z DTEND;VALUE=DATE-TIME:20230905T092000Z DTSTAMP;VALUE=DATE-TIME:20260714T125707Z UID:indico-contribution-544-2970@indico.tlabs.ac.za DESCRIPTION:Speakers: Ivan Ovtin ()\nThe particle identification system AS HIPH (Aerogel\, SHifter\, PHotomultiplier) has been working in the KEDR ex periment at VEPP-4M $e^{+}e^{-}$-collider (Budker INP\, Novosibirsk) since 2014. The system consists of 160 aerogel cherenkov counters arranged in t wo layers and covers 96% of the solid angle. The volume of aerogel is 1000 liters\, its refractive index is 1.05. For the photon detection we use th e Micro Channel Plate (MCP) PMTs. $\\pi$/K separation in the momentum rang e from 0.95 to 1.45 GeV/$c$ is better than 4$\\sigma$. The status of the s ystem is presented. The long-term stability of aerogel counters in the KED R experiment is shown. A review of the use of ASHIPH system for perform ph ysical analysis in the KEDR experiment is presented\, such as measurements of the masses of neutral and charge $D$-mesons and measurement the branch ing fractions of $J/\\psi$ meson decays to the final states $p\\bar{p}$\, $2(\\pi^{+}\\pi^{-})\\pi^{0}$\, $K^{+}K^{-}\\pi^{+}\\pi^{-}\\pi^{0}$\, $2( \\pi^{+}\\pi^{-})$ and $K^{+}K^{-}\\pi^{+}\\pi^{-}$.\n\nhttps://indico.tla bs.ac.za/event/112/contributions/2970/ LOCATION: Meeting Room 2.44 - 2.46 URL:https://indico.tlabs.ac.za/event/112/contributions/2970/ END:VEVENT BEGIN:VEVENT SUMMARY:Development of FARICH technique for the Super Charm-Tau Factory pr oject DTSTART;VALUE=DATE-TIME:20230905T094000Z DTEND;VALUE=DATE-TIME:20230905T100000Z DTSTAMP;VALUE=DATE-TIME:20260714T125707Z UID:indico-contribution-544-2781@indico.tlabs.ac.za DESCRIPTION:Speakers: Alexander Barnyakov (Budker Institute of Nuclear Phy sics)\nThe Super Charm-Tau (SCT) Factory project is a future electron-posi tron colliding beam experiment with unprecedented high luminosity $10^{35} $cm$^{-2}$s$^{-1}$ at the interaction energy range from 3 to 7 GeV. The ph ysics program of the experiment is aimed to search the phenomena beyond th e standard model and its precise calibration in this energy range. The ma in features of the SCT Factory project are presented. To perform the broad physics program at the ultimately high beam intensity the high performanc e universal detector is proposed. One of the proposed detector subsystems is the PID system based on Focusing Aerogel RICH (FARICH) technique. The p roposed FARICH scheme combined with abilities of tracking system will prov ide the excellent $\\pi/K$-separation for the whole operation momentum ran ge and $\\mu/\\pi$-separation up to momentum of 1.5 GeV/c. The idea of FAR ICH detector based on dual aerogel radiator (focusing aerogel tile with m aximal refractive index 1.05 and high optical density aerogel with refract ive index of 1.12) is described. Results of GEANT4 simulation and beam tes t results are in good agreement. PID capabilities of this approach is demo nstrated with help of numerical simulation. In 2023 two multilayer focusin g aerogel samples with overal sizes 230$\\times$230$\\times$35$~$mm were p roduced in Novosibirsk for the first time all over the world. The results of the first beam tests of these aerogel samples and comparison with simul ation are presented. Conceptual design and some technical issues of the PI D system based on FARICH technique are discussed as well.\n\nhttps://indic o.tlabs.ac.za/event/112/contributions/2781/ LOCATION: Meeting Room 2.44 - 2.46 URL:https://indico.tlabs.ac.za/event/112/contributions/2781/ END:VEVENT BEGIN:VEVENT SUMMARY:Progress in the production of aerogel radiators for the RICH detec tors in Novosibirsk DTSTART;VALUE=DATE-TIME:20230905T092000Z DTEND;VALUE=DATE-TIME:20230905T094000Z DTSTAMP;VALUE=DATE-TIME:20260714T125707Z UID:indico-contribution-544-2775@indico.tlabs.ac.za DESCRIPTION:Speakers: Aleksandr Katcin (Budker Institute of Nuclear Physic s)\nModern projects require large format aerogel radiators. In 2022-2023\, several unique aerogel tile were produced in Novosibirsk. Aerogel blocks larger than 200 by 200 mm in lateral size and 40\, 50 mm thickness with a refractive index of 1.03 or 1.05 were fabricated. Also in 2023\, for the f irst time in the world\, samples of a multilayer focusing aerogel with dim ensions of 230x230x35 mm were made. Their parameters were investigated on the test benches and with relativistic electron beams. The results of thes e tests are presented.\n\nhttps://indico.tlabs.ac.za/event/112/contributio ns/2775/ LOCATION: Meeting Room 2.44 - 2.46 URL:https://indico.tlabs.ac.za/event/112/contributions/2775/ END:VEVENT END:VCALENDAR