BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Performance of a prototype gaseous TPC with optical readout for ra re events studies DTSTART;VALUE=DATE-TIME:20230905T092000Z DTEND;VALUE=DATE-TIME:20230905T094000Z DTSTAMP;VALUE=DATE-TIME:20260308T210255Z UID:indico-contribution-511-3114@indico.tlabs.ac.za DESCRIPTION:Speakers: Atul Prajapati (GSSI)\nA gaseous Time Projection C hamber (TPC) with optical readout is proposed in the CYGNO project as an i nnovative technique to study rare events such as DM particle or solar neut rino interactions. 3D particle tracks can be reconstructed in the TPC volu me\, filled with He:CF4 at atmospheric pressure. The amplification stage e xploits a stack of three Gas Electron Multipliers (GEM) stack where the io nisation charge is multiplied\; photons are produced in the multiplication process which are in turn read out by sCMOS sensors and PMTs. The sCMOS c amera guarantees a high readout granularity\, a high sensitivity\, and a l ow noise level. PMTs are used as well to measure the drift time of ionisat ion electrons to obtain the coordinate perpendicular to the camera plane. This technique allows the measurement of the particle energy with a O(KeV) threshold and\, also\, to have a sensibility to the direction of the even ts. This last characteristic is very relevant\, especially for background discrimination. \nA 50 L prototype (LIME) is the last and largest prototyp e built. It was operated at the Frascati National Laboratories (LNF) and w as then moved underground at the Gran Sasso National Laboratories (LNGS) w here it is still under test exploiting different shielding configuration t o carefully measure internal and external backgrounds and to test reconstr uction capability in realistic conditions.\nResults on the measured perfor mance of LIME overground using several radioactive sources will be present ed\, as well as the studies on the long-term stability and performances of the prototype both over and underground. The comparison of a Monte Carlo simulation of the detector response with measured data will be shown. More over\, current R&D activities with the aim of optimizing the design of the O(1) m3 demonstrator to be hosted in Hall F of LNGS will be discussed.\n\ nhttps://indico.tlabs.ac.za/event/112/contributions/3114/ LOCATION: Meeting Room 2-61 - 2.63 URL:https://indico.tlabs.ac.za/event/112/contributions/3114/ END:VEVENT BEGIN:VEVENT SUMMARY:The Power System of GEM-Muon Sub-Detector for CMS Phase-II upgrade DTSTART;VALUE=DATE-TIME:20230905T100000Z DTEND;VALUE=DATE-TIME:20230905T102000Z DTSTAMP;VALUE=DATE-TIME:20260308T210255Z UID:indico-contribution-511-3255@indico.tlabs.ac.za DESCRIPTION:Speakers: Shimaa AbuZeid (Ain Shams University (Egypt) and INF N (Italy))\nIn preparation for the High Luminosity LHC phase\, the Compac t Muon Solenoid (CMS) experiment is working on its (Phase-2) upgrade. The Gas Electron Multiplier (GEM) detectors are one of the technologies inv olved in this upgrade. The GEM systems consist of 3 stations. GE1/1 was i nstalled and is taking data since the beginning of Run3\; GE2/1 and ME0 w ill be installed during the next Year End Technical Stop (YETS) and the L ong Shutdown 3 (LS3). The GEM stations utilize different modules manufac tured by CAEN for the High-Voltage (HV) and Low Voltage (LV) power syste ms (PS). The HV-PS is used to generate the electric field needed for the multiplication of electrons inside of the GEM foils while the LV-PS is cr ucial for the GEM ON/OFF detector electronics. Some hardware modificatio ns are applied to CAEN HV-boards to meet the HV-PS requirements for ME0. We benefit from different features of CAEN modules to build a LV power s ystem for the 3 stations of GEM detectors that minimizes the space needed in both the service and the experimental caverns of CMS\, the power con sumption\, and the financial budget. All these modules have to be tested and validated before installation in the CMS caverns. In this talk the co nfiguration\, the design and mapping of HV and LV power systems for the G EM Phase-II upgrade will be presented.\n\nhttps://indico.tlabs.ac.za/event /112/contributions/3255/ LOCATION: Meeting Room 2-61 - 2.63 URL:https://indico.tlabs.ac.za/event/112/contributions/3255/ END:VEVENT BEGIN:VEVENT SUMMARY:Long-term Performance Studies of Resistive Plate Chambers with Env ironmentally Friendly HFO/CO2 Gas Mixtures at the GIF++ Facility DTSTART;VALUE=DATE-TIME:20230905T104000Z DTEND;VALUE=DATE-TIME:20230905T110000Z DTSTAMP;VALUE=DATE-TIME:20260308T210255Z UID:indico-contribution-511-2975@indico.tlabs.ac.za DESCRIPTION:Speakers: Gianluca Rigoletti (CERN)\nThe development and evalu ation of environmentally sustainable gas mixtures for Resistive Plate Cham bers (RPCs) have become increasingly important due to the high Global Warm ing Potential (GWP) associated with the currently mostly used gases\, C2H2 F4 and SF6. The ECOGAS collaboration\, which includes ATLAS\, CMS\, ALICE\ , LHCb/SHiP\, and the CERN EP-DT group\, is dedicated to investigating the long-term performance of RPC detectors under irradiation using eco-friend ly HFO/CO2-based gas mixtures. These long-term tests conducted at the GIF+ + facility complement existing research on alternative gas mixtures aimed at reducing greenhouse gas emissions. The experimental setup and the tools utilized to monitor the system are designed to study the impact of HFO/CO 2 gas mixtures on RPC performance over extended periods and high integrate d charge. This abstract presents the latest results from test beams and ag ing test and it discusses future plans for continued evaluation of environ mentally friendly gas mixtures in the context of RPC detectors.\n\nhttps:/ /indico.tlabs.ac.za/event/112/contributions/2975/ LOCATION: Meeting Room 2-61 - 2.63 URL:https://indico.tlabs.ac.za/event/112/contributions/2975/ END:VEVENT BEGIN:VEVENT SUMMARY:Longevity Studies of the CMS Muon System for HL-LHC DTSTART;VALUE=DATE-TIME:20230905T102000Z DTEND;VALUE=DATE-TIME:20230905T104000Z DTSTAMP;VALUE=DATE-TIME:20260308T210255Z UID:indico-contribution-511-2956@indico.tlabs.ac.za DESCRIPTION:Speakers: Lisa Borgonovi (Università e INFN Bologna)\nDuring the upcoming years of the High Luminosity Large Hadron Collider (HL-LHC) p rogram\, the CMS Muon spectrometer will face challenging conditions. The e xisting detectors\, which consist of Drift Tubes (DT)\, Resistive Plate Ch ambers (RPC)\, and Cathode Strip Chambers (CSC)\, as well as recently inst alled Gas Electron Multiplier (GEM) stations\, will need to sustain an ins tantaneous luminosity of up to $5-7 \\cdot 10^{34}$ cm$^{−2}$s$^{−1}$\ , resulting in increased pile-up\, and about 10 times the expected LHC int egrated luminosity. To cope with the high rate environment and maintain go od performance\, additional GEM stations and improved RPC (iRPC) detectors will be installed in the innermost region of the forward muon spectromete r. The CMS muon system upgrade program includes\, together with the substi tution of the on-detector and backend electronics of the existing detector s\, accelerated irradiation studies performed at the CERN Gamma Irradiatio n Facility (GIF++) or with specific X-ray sources\, in order to certify th e detector performance for 10 years of operation under the harsh HL-LHC co nditions. Furthermore\, since RPCs and CSCs use gases with a global warmin g potential (GWP)\, ongoing efforts are being made to find new eco-friendl y gas mixtures\, as part of the CERN-wide program to phase out fluorinated greenhouse gases. This report presents the status of the CMS Muon system longevity studies\, along with actions taken to reduce detector aging and minimize greenhouse gas consumption.\n\nhttps://indico.tlabs.ac.za/event/1 12/contributions/2956/ LOCATION: Meeting Room 2-61 - 2.63 URL:https://indico.tlabs.ac.za/event/112/contributions/2956/ END:VEVENT BEGIN:VEVENT SUMMARY:Gas Quality Monitor for gaseous detectors DTSTART;VALUE=DATE-TIME:20230905T094000Z DTEND;VALUE=DATE-TIME:20230905T100000Z DTSTAMP;VALUE=DATE-TIME:20260308T210255Z UID:indico-contribution-511-3148@indico.tlabs.ac.za DESCRIPTION:Speakers: Kirill Salamatin (JINR)\nReliable operation of gaseo us coordinate detectors in modern High Energy Physics experiments requires precise and stable composition of the working gas mixture. Independent mo nitoring of the gas quality is vital for many detector systems.\n\nWe prop ose independent gas quality monitoring system based on a straw tube module equipped with a configurable high voltage supply\, readout electronics an d RaspberryPi-based lightweight Data Acquisition System. The module can be connected to a supply or return lines of the monitored gas system. Straw response to a 55Fe X-ray source is amplified\, digitized and recorded. The peak position of the signal amplitude spectra is proportional to the stra w gas gain which in turn depends on the gas quality\, pressure and tempera ture.\n\nCareful calibration of pressure and temperature dependence allows to obtain high sensitivity to the changes of the gas composition. The res ults achieved with Ar/CO2/CF4 gas mixtures are presented.\n\nhttps://indic o.tlabs.ac.za/event/112/contributions/3148/ LOCATION: Meeting Room 2-61 - 2.63 URL:https://indico.tlabs.ac.za/event/112/contributions/3148/ END:VEVENT BEGIN:VEVENT SUMMARY:Resistive Charge-Readouts: Towards the Next Generation of Dual-Pha se LArT-TPCs DTSTART;VALUE=DATE-TIME:20230905T090000Z DTEND;VALUE=DATE-TIME:20230905T092000Z DTSTAMP;VALUE=DATE-TIME:20260308T210255Z UID:indico-contribution-511-2772@indico.tlabs.ac.za DESCRIPTION:Speakers: Andrea Tesi (Weizmann Institute of Science)\nThe dev elopment of new materials with tunable surface and/or bulk resistivity pav ed the way to explore new resistive-MPGD technologies for application in c ryogenic systems. We will present new results obtained with two novel tech nologies targeting operation in liquid argon DP-TPCs: the cryogenic Resist ive WELL (RWELL) and the cryogenic Resistive Plate WELL (RPWELL). The RWEL L and RPWELL consist of a single-sided THGEM electrode coupled to a readou t anode either through an insulating sheet coated with a thin resistive la yer (DLC) or through a Fe2O3-YSZ ceramic plate\, respectively. The advant ages of these technologies relative to non-resistive detector configuratio ns are demonstrated and their performance is compared in terms of maximal achievable gain\, pulse shape\, and discharge probability. Scaled-up versi ons of such detectors could become a technology of choice in DP-TPC-based applications requiring cost-effective solutions for large area coverage at moderate spatial and energy resolution.\n\nhttps://indico.tlabs.ac.za/eve nt/112/contributions/2772/ LOCATION: Meeting Room 2-61 - 2.63 URL:https://indico.tlabs.ac.za/event/112/contributions/2772/ END:VEVENT END:VCALENDAR