BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Construction and commissioning of a new T2K near detector SuperFGD DTSTART;VALUE=DATE-TIME:20240417T084000Z DTEND;VALUE=DATE-TIME:20240417T090000Z DTSTAMP;VALUE=DATE-TIME:20260907T003721Z UID:indico-contribution-443-194@indico.nsrrc.org.tw DESCRIPTION:Speakers: Hikaru Tanigawa (KEK)\nThe T2K experiment is a long baseline neutrino oscillation experiment aiming to discover CP violation i n neutrino mixing. A new detector\, SuperFGD\, has been installed in the n ear detector since October 2023 to reduce systematic errors in the neutrin o oscillation analysis. It consists of about 2 million 1 cm scintillator c ubes\, about 56\,000 wavelength shifting fibers penetrating them from thre e directions\, and an equal number of photodetector MPPCs. The SuperFGD re corded its first neutrino beam data in December 2023. We report about the assembly and commissioning of the unique detector.\n\nhttps://indico.nsrrc .org.tw/event/16/contributions/194/ LOCATION: Research Building A300 URL:https://indico.nsrrc.org.tw/event/16/contributions/194/ END:VEVENT BEGIN:VEVENT SUMMARY:On recent progress and perspectives in development of aerogel base d Cherenkov detectors for future colliding beam experiments DTSTART;VALUE=DATE-TIME:20240418T032000Z DTEND;VALUE=DATE-TIME:20240418T034000Z DTSTAMP;VALUE=DATE-TIME:20260907T003721Z UID:indico-contribution-443-199@indico.nsrrc.org.tw DESCRIPTION:Speakers: Alexander Barnyakov (Budker Institute of Nuclear Phy sics)\nNow there are several colliding beam experiments proposed for reali sation in a future all around the world. Among them are hadron colliding b eam experiment SPD at NICA (JINR\, Dubna\, Russia)[1]\, electron-positron colliding beam experiments SCTF (Sarov\, Russia)[2]\, STCF (Hefei\, China) \, CEPC (China)[3]\, and electron-ion colliding experiment EicC (Huizhou\ , Guangdong\, China) [4]. The construction of an universal detectors for e very one of these experiments are presumed. The particle identification sy stem is the natural part of each these universal detectors. The aerogel ba sed Cherenkov detectors are able to provide excellent particle separation in wide momentum range. For some of these experiments like SPD or EicC onl y pi/K-separation up to high momentum range is required for other such lik e SCTF the mu/pi-separation up to 1.5 GeV/c. To satisfy these requirements to PID system several RICH detector concepts based on aerogel Cherenkov r adiators are under consideration. The recent progress in aerogel Cherenkov radiators production in Novosibirsk is presented. Evaluations of expected performances for several RICH concepts like FARICH or mRICH based on Novo sibirsk aerogel is given. For the first time direct comparison of aerogels produced in Novosibirsk and in China performed with help of optical measu rements and beam tests as well. The new concept of RICH detector based on aerogel fibres produced in SINANO is proposed. Some peculiarities of this concept and results obtained with help of MC simulation are discussed too. \n\n[1] http://spd.jinr.ru\n[2] https://sct.inp.nsk.su\n[3] http://cepc.ih ep.ac.cn\n[4] https://indico.pnp.ustc.edu.cn/event/1191/overview\n\nhttps: //indico.nsrrc.org.tw/event/16/contributions/199/ LOCATION: Research Building A300 URL:https://indico.nsrrc.org.tw/event/16/contributions/199/ END:VEVENT BEGIN:VEVENT SUMMARY:Development of LGAD Sensors at IHEP DTSTART;VALUE=DATE-TIME:20240417T090000Z DTEND;VALUE=DATE-TIME:20240417T092000Z DTSTAMP;VALUE=DATE-TIME:20260907T003721Z UID:indico-contribution-443-196@indico.nsrrc.org.tw DESCRIPTION:Speakers: Mengzhao Li (Institute of High Energy Physics\, Chin ese Academy of Sciences)\nThe Low Gain Avalanche Diode (LGAD) is a novel s ilicon sensor known for its excellent timing resolution. The AC-Coupled LG AD (AC-LGAD) is a new type 4D detector developed based on LGAD technology\ , capable of accurately measuring the time and position information of par ticles. This presentation will showcase the development status of LGAD and AC-LGAD sensors designed by the Institute of High Energy Physics (IHEP). Following irradiation fluence of 2.5 × 1015 neq/cm2\, the time resolution of IHEP LGAD sensors is superior to 35 ps\, with collected charges exceed ing 10 fC. The IHEP LGAD has been selected as the sensor for the ATLAS Hig h Granularity Timing Detector (HGTD) project. The position resolution of I HEP AC-LGAD can achieve 10 μm\, with a time resolution of 38 ps\, making it suitable for the development of time-track detectors in future collider experiments such as the Circular Electron Positron Collider (CEPC) and th e Future Circular Collider (FCC).\n\nhttps://indico.nsrrc.org.tw/event/16/ contributions/196/ LOCATION: Research Building A300 URL:https://indico.nsrrc.org.tw/event/16/contributions/196/ END:VEVENT BEGIN:VEVENT SUMMARY:Laser polarimeter for measuring the beam energy of the VEPP-4M acc elerator using the resonant depolarization method DTSTART;VALUE=DATE-TIME:20240417T082000Z DTEND;VALUE=DATE-TIME:20240417T084000Z DTSTAMP;VALUE=DATE-TIME:20260907T003721Z UID:indico-contribution-443-183@indico.nsrrc.org.tw DESCRIPTION:Speakers: Ivan Nikolaev (Budker Institute of Nuclear Physics)\ nThe KEDR detector at the VEPP-4M accelerator complex plans to measure the mass\nof the Y(1S) meson with an accuracy better than 50 keV. This experi ment\nrequires precision measurement of the beam energy. The most accurate method of\nmeasuring beam energy is the resonance depolarization method. The method is\nbased on the connection of the particle energy with the spi n precession\nfrequency\, which is determined by the destruction of the be am polarization in\nthe presence of an alternating electromagnetic field. The polarization of the\nbeam is measured by the asymmetry of the Compton backscattering of\ncircularly polarized photons on transversely polarized electrons. The report is\ndevoted to the description of the "Laser Polarim eter" facility and the\nfeatures of beam energy measurement. An Nd:YLF las er with a wavelength of 527\nnm and an average power of 2 watts is used as a photon source. The\nbackscattered gamma quanta are detected using a two -coordinate detector based\non triple GEM. The laser polarimeter allows me asuring the energy of the VEPP-4M beam\nwith an accuracy of about 15 keV i n 30 minutes directly during the data collecting by the KEDR detector.\n\n https://indico.nsrrc.org.tw/event/16/contributions/183/ LOCATION: Research Building A300 URL:https://indico.nsrrc.org.tw/event/16/contributions/183/ END:VEVENT BEGIN:VEVENT SUMMARY:Fluorescence diamond EUV/soft X-ray imaging sensor development DTSTART;VALUE=DATE-TIME:20240418T053000Z DTEND;VALUE=DATE-TIME:20240418T055000Z DTSTAMP;VALUE=DATE-TIME:20260907T003721Z UID:indico-contribution-443-164@indico.nsrrc.org.tw DESCRIPTION:Speakers: Teng-I Yang (Taiwan Instrument Research Institute)\n We have achieved a groundbreaking demonstration of utilizing FNDs as scint illators for imaging synchrotron-based EUV radiation. The carbon-based sci ntillator comprises an ensemble of NV0 centers serving as the primary sour ce of light emission upon above-bandgap excitation (energy > 5.47 eV or wa velength \n\nhttps://indico.nsrrc.org.tw/event/16/contributions/164/ LOCATION: Research Building A300 URL:https://indico.nsrrc.org.tw/event/16/contributions/164/ END:VEVENT BEGIN:VEVENT SUMMARY:MPGD Production capability and R&D plan in Korea DTSTART;VALUE=DATE-TIME:20240418T071000Z DTEND;VALUE=DATE-TIME:20240418T073000Z DTSTAMP;VALUE=DATE-TIME:20260907T003721Z UID:indico-contribution-443-198@indico.nsrrc.org.tw DESCRIPTION:Speakers: Inseok Yoon (Seoul National University)\nKorea CMS i s one of the only two organizations\, along with CERN micro pattern techno logy workshop\, capable of producing large GEM foils\, playing a crucial r ole in the CMS GEM upgrade. To achieve this\, it has built the world's fir st large GEM production facility using the double-mask etching technology\ , which is suitable for faster production. The validation results and mass production progress of GEM foils produced in Korea will be reported. Addi tionally\, R&D plan for the production of uRWELL\, the next-generation mic ro pattern gaseous detector\, by expanding the established capabilities wi ll be presented. This R&D effort aims to supply uRWELL for the DAMSA exper iment\, a new venture in search for axion-like particle and dark photon\, with the potential to also contribute to the ePIC experiment.\n\nhttps://i ndico.nsrrc.org.tw/event/16/contributions/198/ LOCATION: Research Building A300 URL:https://indico.nsrrc.org.tw/event/16/contributions/198/ END:VEVENT BEGIN:VEVENT SUMMARY:Detector development of the Beam Expansion Application at CSNS DTSTART;VALUE=DATE-TIME:20240417T092000Z DTEND;VALUE=DATE-TIME:20240417T094000Z DTSTAMP;VALUE=DATE-TIME:20260907T003721Z UID:indico-contribution-443-197@indico.nsrrc.org.tw DESCRIPTION:Speakers: You Lyu ()\nThe China Spallation Neutron Source (CSN S) was completed in March 2018\, and it is the first spallation neutron so urce in China. The CSNS project plans to construct four beamlines for beam expansion applications\, including a back-streaming white neutron beamlin e\, a medium-energy proton beamline\, a high-energy proton beamline\, and a surface muon beamline. Around these four beamlines\, we have developed a series of detectors for use in various experiments\, including beam monit oring\, beam profile measurement\, charged particle detection\, etc. All t hese detectors will be briefly presented in this report\, with a particula r focus on the TPC used for neutron-induced secondary cross-section measur ement and the B-MCP detector for neutron resonance photography.\n\nhttps:/ /indico.nsrrc.org.tw/event/16/contributions/197/ LOCATION: Research Building A300 URL:https://indico.nsrrc.org.tw/event/16/contributions/197/ END:VEVENT BEGIN:VEVENT SUMMARY:Research and Development of industrialization of module assembly f or the ALICE 3 Outer Tracker DTSTART;VALUE=DATE-TIME:20240418T061000Z DTEND;VALUE=DATE-TIME:20240418T063000Z DTSTAMP;VALUE=DATE-TIME:20260907T003721Z UID:indico-contribution-443-202@indico.nsrrc.org.tw DESCRIPTION:Speakers: Jiyoung Kim (Inha University (KR))\nALICE 3 is the n ext-generation heavy-ion experiment proposed for the LHC Run 5 and 6. Its tracking system will be based on a vertex detector\, integrated into a ret ractable structure inside the beam pipe to achieve the best possible point ing resolution\, and a large outer tracker\, surrounding the vertex detect or and covering about eight units of pseudorapidity ($|\\eta|\n\nhttps://i ndico.nsrrc.org.tw/event/16/contributions/202/ LOCATION: Research Building A300 URL:https://indico.nsrrc.org.tw/event/16/contributions/202/ END:VEVENT BEGIN:VEVENT SUMMARY:Precision Timing at High-Luminosity LHC with the CMS MIP Timing De tector DTSTART;VALUE=DATE-TIME:20240418T034000Z DTEND;VALUE=DATE-TIME:20240418T040000Z DTSTAMP;VALUE=DATE-TIME:20260907T003721Z UID:indico-contribution-443-200@indico.nsrrc.org.tw DESCRIPTION:Speakers: Chang-Seong MOON (Kyungpook National University)\nTh e MIP Timing Detector (MTD) is a new sub-detector planned for the Compact Muon Solenoid (CMS) experiment at CERN\, aimed at maintaining the excellen t particle identification and reconstruction efficiency of the CMS detecto r during the High-Luminosity LHC (HL-LHC) era. The MTD will provide new an d unique capabilities to CMS by measuring the time-of-arrival of minimum i onizing particles with a resolution of 30 - 40 ps at the beginning of HL-L HC operation. The information provided by the MTD will help disentangle ~2 00 nearly simultaneous pileup interactions occurring in each bunch crossin g at LHC by enabling the use of 4D reconstruction algorithms. The MTD will be composed of an endcap timing layer (ETL)\, instrumented with low-gain avalanche diodes\, as well as a barrel timing layer (BTL)\, based on LYSO: Ce crystals coupled to SiPMs. In this talk\, we will present an overview o f the MTD design\, highlight the new physics capabilities provided by the MTD\, describe the latest progress toward production\, and show test beam results demonstrating the achieved target time resolution.\n\nhttps://indi co.nsrrc.org.tw/event/16/contributions/200/ LOCATION: Research Building A300 URL:https://indico.nsrrc.org.tw/event/16/contributions/200/ END:VEVENT BEGIN:VEVENT SUMMARY:R&D of Barrel Imaging Calorimeter for the ePIC experiment DTSTART;VALUE=DATE-TIME:20240418T055000Z DTEND;VALUE=DATE-TIME:20240418T061000Z DTSTAMP;VALUE=DATE-TIME:20260907T003721Z UID:indico-contribution-443-201@indico.nsrrc.org.tw DESCRIPTION:Speakers: Jeongsu Bok (Pusan National University)\nElectron-Io n Collider (EIC) is a new collider to explore the fundamental structure an d dynamics of matter in the visible world. The EIC project includes a gene ral-purpose detector: The ePIC Detector. The unique physics goals at the E lectron-Ion Collider lead to specific design considerations for the electr omagnetic calorimeter in the barrel region. The Barrel Imaging Calorimeter comprises silicon layers using the AstroPix sensors for position measurem ent\, and bulk Pb-SciFi layers for energy measurement. Precise measurement of electron energy and shower profile will enable us to distinguish elect rons from pions and to identify photons from pion decays. This talk will p rovide a plan and current R&D effort from Korean institutions for the ePIC Barrel Imaging Calorimeter. Korean institutions plan to contribute to the mass chip test and module assembly of the silicon layers. In addition\, t he production of a Pb-SciFi prototype is ongoing for further study includi ng readout box\, calibration\, and integration with a silicon layer.\n\nht tps://indico.nsrrc.org.tw/event/16/contributions/201/ LOCATION: Research Building A300 URL:https://indico.nsrrc.org.tw/event/16/contributions/201/ END:VEVENT BEGIN:VEVENT SUMMARY:R&D of Fast Timing Multi Anode MCP-PMT for Radiation Imaging DTSTART;VALUE=DATE-TIME:20240418T084000Z DTEND;VALUE=DATE-TIME:20240418T090000Z DTSTAMP;VALUE=DATE-TIME:20260907T003721Z UID:indico-contribution-443-181@indico.nsrrc.org.tw DESCRIPTION:Speakers: Ma Lishuang (IHEP，CAS)\nThe time performance of ph otodetector is a critical parameter for the development of Radiation Imagi ng Detectors based on time of flight (TOF) technique\, for example TOF pos itron emission tomography (TOF-PET). In 2020\, the proposal of roadmap tow ard the 10 ps TOF-PET challenge places higher requirement on the time perf ormance of the photodetector. Microchannel Plate Photomultiplier (MCP-PMT) is a popular candidate photodetector of TOF-PET for its high gain\, good detection efficiency\, single photon detect ability\, magnetic field resis tance\, ultimately its good time resolution and spatial resolution. \nThis manuscript introduces the R&D of fast timing MCP-PMT with 8*8 anodes with a rise time (RT) less than 300 ps and Transit time spread (TTS) less than 40 ps under single photon mode. In addition to the performance evaluation of the MCP-PMT itself\, the performance of this kind of MCP-PMT coupled w ith crystal array also be calibrated under proton and neutron beam respect ively\, including the energy resolution and uniformity\, the time resoluti on and uniformity. The experiment is in progress\, and the relevant result s are being analysed step by step\, and the full results will be presented in a formal report or article.\n\nhttps://indico.nsrrc.org.tw/event/16/co ntributions/181/ LOCATION: Research Building A300 URL:https://indico.nsrrc.org.tw/event/16/contributions/181/ END:VEVENT BEGIN:VEVENT SUMMARY:Research and Development of the ALICE Inner Tracking System 3 in K orea DTSTART;VALUE=DATE-TIME:20240418T040000Z DTEND;VALUE=DATE-TIME:20240418T042000Z DTSTAMP;VALUE=DATE-TIME:20260907T003721Z UID:indico-contribution-443-203@indico.nsrrc.org.tw DESCRIPTION:Speakers: Jiyoung Kim (Inha University (KR))\nThe ALICE (A Lar ge Ion Collider Experiment) collaboration is gearing up for an upgrade of the Inner Tracking System (ITS2) during the LHC Long Shutdown 3 (2026 - 20 28). The upgrade will replace the three innermost layers of ITS2 with a tr uly cylindrical vertex detector\, ITS3. This innovative tracker is compose d of a 65 nm CMOS Monolithic Active Pixel Sensor (MAPS) employing stitchin g technology to produce a large sensor size O(10 x 26 cm$^{2}$). Its ultra -thin thickness\, O(20 - 50 $\\mu$m)\, allows flexibility to be bent into a half-cylindrical shape without additional supporting material. Finally\, the three layers of the tracker consist of only six silicon sensors and l ight carbon forms to hold each layer to keep it in shape and location. \n\ nThis detector configuration of ITS3 can reduce the material budget to 0.0 7\\% X$_{0}$ per layer. As a result\, it foresees the tracking performance \, in particular at low transverse momentum ($p_{\\text{T}} >$ 0.1 GeV/\\t extit{c})\, is improved by a factor of 2 to the current ITS2. The developm ent and validation of the sensor technology are in progress\, with the pro totype sensors from the first and the second test production runs: Multi-r eticle-Layer Run 1 (MLR1) and Engineering Run 1 (ER1). Sensor design and i ts characteristics fabricated with 65 nm CMOS technology are the main inte rests in MLR1 prototypes whereas the validation of stitching technology is a crucial task in the R\\&D with the ER1 ones.\n\nThis talk will introduc e the design and structure of ITS3 and discuss extensive R\\&D for bent MA PS detectors focusing on the Korean ALICE ITS3 team's activities.\n\nhttps ://indico.nsrrc.org.tw/event/16/contributions/203/ LOCATION: Research Building A300 URL:https://indico.nsrrc.org.tw/event/16/contributions/203/ END:VEVENT BEGIN:VEVENT SUMMARY:Neutron Detection Study from Beam test of Boron GEM detector DTSTART;VALUE=DATE-TIME:20240418T082000Z DTEND;VALUE=DATE-TIME:20240418T084000Z DTSTAMP;VALUE=DATE-TIME:20260907T003721Z UID:indico-contribution-443-207@indico.nsrrc.org.tw DESCRIPTION:Speakers: WooJong Kim (University of Seoul)\nThe GEM neutron d etector incorporates a layer of boron for neutron capture.\nThe aim is to offer more cost-effective and larger-scale coverage for neutron detection compared to conventional cold neutron detectors. \nWe present the results of the beam test using cold neutrons (10 meV) at HANARO (High-Flux Advance d Neutron Application Reactor)\, analyzing the hit positions of the neutro n beam and the signal waveform.\n\nhttps://indico.nsrrc.org.tw/event/16/co ntributions/207/ LOCATION: Research Building A300 URL:https://indico.nsrrc.org.tw/event/16/contributions/207/ END:VEVENT BEGIN:VEVENT SUMMARY:Development of new optical readout concept in the visible range fo r dark matter detectors DTSTART;VALUE=DATE-TIME:20240418T065000Z DTEND;VALUE=DATE-TIME:20240418T071000Z DTSTAMP;VALUE=DATE-TIME:20260907T003721Z UID:indico-contribution-443-204@indico.nsrrc.org.tw DESCRIPTION:Speakers: Vladislav Oleynikov (Budker INP)\nLiquid argon detec tors are used in a variety of fundamental physical experiments\, such as d ark matter searches and neutrino studies. The use of argon as a target med ium is largely due to its high light yield. However\, the maximum emission intensity occurs at a wavelength of 128 nm\, which is difficult to detect with high efficiency. The standard solution is to use wavelength shifter\ , which re-emits 128 nm into the visible range\, but it has its own drawba cks. In this paper\, an alternative readout concept is considered\, namely light readout in the visible and infrared range without wavelength shifte r. The results of measurements of the light yield of primary scintillation s (S1) in liquid phase and electroluminescence (S2) in gaseous phase in pu re argon and their mixtures with methane are presented. Possible applicati ons of this new readout concept in dark matter detectors and neutron veto detectors are also discussed.\n\nhttps://indico.nsrrc.org.tw/event/16/cont ributions/204/ LOCATION: Research Building A300 URL:https://indico.nsrrc.org.tw/event/16/contributions/204/ END:VEVENT BEGIN:VEVENT SUMMARY:Development of micro-pattern gaseous TPC for direction-sensitive d ark matter search DTSTART;VALUE=DATE-TIME:20240418T080000Z DTEND;VALUE=DATE-TIME:20240418T082000Z DTSTAMP;VALUE=DATE-TIME:20260907T003721Z UID:indico-contribution-443-206@indico.nsrrc.org.tw DESCRIPTION:Speakers: Satoshi Higashino (Kobe University)\nThe sensitivity of the direct dark matter search is being improved by various energy-sens itive experiments such as XENONnT\, LZ\, Panda-X and so on. On the other h and\, in order to reveal properties of the dark matter particle after its discovery or to explore beyond the neutrino-fog region\, direction-sensiti ve dark matter search is designed and taken place recently.The 3D tracking technology of nuclear recoils induced by dark matters allows to measure t he directionality of dark matters.One of the method to reconstruct nuclear recoils' track is the use of low-pressure gaseous TPC with micro-pattern readout.In this talk\, we report the recent activities of the development of low-pressure gaseous TPC's used for direction-sensitive direct dark mat ter searches in the world\, especially for our experiment: NEWAGE.\n\nhttp s://indico.nsrrc.org.tw/event/16/contributions/206/ LOCATION: Research Building A300 URL:https://indico.nsrrc.org.tw/event/16/contributions/206/ END:VEVENT BEGIN:VEVENT SUMMARY:Development of the detectors and conducting experiments with Tunk a-Grande and TAIGA-Muon scintillation detectors arrays DTSTART;VALUE=DATE-TIME:20240417T080000Z DTEND;VALUE=DATE-TIME:20240417T082000Z DTSTAMP;VALUE=DATE-TIME:20260907T003721Z UID:indico-contribution-443-205@indico.nsrrc.org.tw DESCRIPTION:Speakers: E.A. Kravchenko (Novosibirsk State University/ Budke r Institute of Nuclear Physics)\nTunka-Grande and TAIGA-Muon are scintilla tion detector arrays that are part of the TAIGA gamma observatory located near Lake Baikal. TAIGA is a hybrid complex of different systems located o n an area of 1 km2 and detecting simultaneously secondary charged particle s and Cherenkov light produced by extensive air showers (EAS). The experim ental scientific program covers gamma-ray astronomy\, cosmic ray physics a nd astroparticle physics. \nTunka-Grande scintillation array was put into service at the end of 2015. It consists of 19 stations each equipped with 12 surface and 8 underground detectors with the area 0.64 m^2. The energy range of Tunka-Grande array is 10^16–10^18 eV. The latest experimental r esults on the search for diffuse gamma radiation will be presented. \nTo e xpand the energy range of the experiment to 10^15 eV\, it was decided to s upplement the existing detector system with a new TAIGA-muon installation. For this purpose\, the new scintillation detectors of large area (0.96 m^ 2) were developed. These detectors use wavelength shifting light guides fo r the collection of scintillation light on the PMT. The original design he lped to minimize the thickness of the scintillator in the counter and allo wed to use small PMTs in the detector. All these minimize the cost of the counter. At the moment\, 5 new TAIGA-Muon stations have been installed. On e station comprises 20 underground and 4 surface detectors. The 4 remainin g consist of only 8 surface detectors. This summer all of them will be equ ipped with underground detectors. The scientific program of the upgraded s cintillation arrays includes the search for diffuse gamma radiation in the extended energy region\, study of the mass composition of cosmic rays and search of multi-messenger events in coincidence with other astroparticle experiments.\n\nhttps://indico.nsrrc.org.tw/event/16/contributions/205/ LOCATION: Research Building A300 URL:https://indico.nsrrc.org.tw/event/16/contributions/205/ END:VEVENT BEGIN:VEVENT SUMMARY:Construction of an electromagnetic calorimeter prototype using LYS O crystals for the ZDC at ePIC DTSTART;VALUE=DATE-TIME:20240418T063000Z DTEND;VALUE=DATE-TIME:20240418T065000Z DTSTAMP;VALUE=DATE-TIME:20260907T003721Z UID:indico-contribution-443-241@indico.nsrrc.org.tw DESCRIPTION:Speakers: Kai-Yu Cheng (Academia Sinica)\nThe Electron-Ion col lider (EIC) is designed to collide spin-polarized beams of electrons and i ons to study with precision the dynamics of gluons and sea quarks and thei r role in the structure of visible matter. The ePIC is a general-purpose l arge-acceptance detector and will be the first experiment operated at the EIC. For studies aiming at the three-dimensional structure of nucleons and nuclei and gluon density saturation. It requires the identification of fa r-angle photons and tagging spectator neutrons. Zero Degree Calorimeter (Z DC) is proposed to achieve reasonable energy resolution for neutrons(~beam energy) and photons(0.1 to 40 GeV)\, respectively. The position resolutio n is also asked to be better than 3mrad/sqrt(E) for neutrons and 1mm for p hotons. We developed the first electromagnetic calorimeter prototype using 64 LYSO crystals\, each size 7.12mm x 7.12mm x 88mm\, and SiPMs for the ZDC. The calibration was done with Co60 and Na22 radiation sources. This F ebruary\, a beam test was performed in ELPH in Japan with 50MeV to 823MeV positron beam. The results from the calibration and test beam will be show n in this presentation.\n\nhttps://indico.nsrrc.org.tw/event/16/contributi ons/241/ LOCATION: Research Building A300 URL:https://indico.nsrrc.org.tw/event/16/contributions/241/ END:VEVENT END:VCALENDAR