Conveners
Parallel Session-II: at AG66
- Ismael Martel (University of Huelva (ES))
Parallel Session-II: at AG66
- Ismael Martel (University of Huelva (ES))
Parallel Session-II: at AG69
- Saranya Samik Ghosh (Indian Institute of Technology Hyderabad (IN))
Parallel Session-II: at AG66
- Prakash Rout (Bhabha Atomic Research Centre (IN))
Parallel Session-II: at AG66
- Shilpi Jain (Tata Institute of Fundamental Research (IN))
In 2024 the Belle II experiment resumed data taking after its Long Shutdown 1, which was required to install a two-layer pixel detector and upgrade components of the accelerator. We describe the challenges of this upgrade and report on the operational experience during the subsequent data taking. With new data, the SVD confirmed high hit efficiency, large signal-to-noise and good...
The silicon part of the High Granularity Calorimeter (HGCAL) of the CMS will have approximately 6 million readout channels. Each of these modules will be readout by a front-end board, called the hexaboard, using a dedicated readout chip called the HGAL Readout Chip (HGCROC). Before these hexaboards can be approved for use in the HGCAL post assembly, it is essential to know whether all the ball...
For the HL-LHC operations, the CMS tracker is required to be replaced with an improved tracking system to achieve the unique objectives associated with the CMS Physics program. The CMS Phase 2 tracker have been designed with high granularity for the track reconstruction in the challenging HL-LHC environment consisting large number of pile-up events. Additionally, the new CMS tracker would be...
Authors: Anup Kumar Sikdar1,โ, Arun Kumar Yadav1,3, Sanjib Muhuri1,3,
Jogender Saini, Zubayer Ahammed1,3, Anamika Pallavi1, Subikash Choudhary4,
Sudhirsinh Vala5
1 EHEPAG, Variable Energy Cyclotron Centre, Kolkata - 700064, INDIA
2 Bhabha Atomic Research Centre, Mumbai - 400085, INDIA
3 Homi Bhabha National Institute, Mumbai - 400064, INDIA
4 Jadavpur University, Kolkata - 700032,...
The muon's anomalous magnetic moment (g-2) is a sensitive probe for new physics beyond the Standard Model, as it can be both experimentally measured and theoretically predicted with high precision. The consistency between experimental measurements and theoretical predictions is a subject of ongoing discussion, and validation from both sides is desired. The J-PARC muon g-2/EDM experiment aims...
The LHCb (Large Hadron Collider Beauty) experiment is a dedicated machine for precision measurement of CP (Charge Parity) violation and rare processes in heavy flavour physics. For operation during Runs III and IV at the LHC, a complete overhaul of the VELO (VErtex LOcator) was installed and commissioned in 2022. The VELO was completely redesigned replacing the original strip detector with a...
NA60+/DiCE is a new fixed-target experiment designed to study the phase diagram of the strongly interacting matter at high baryochemical potential from 200 to 550 MeV at the CERN SPS. The experimental setup includes a vertex spectrometer based on large-area stitched Monolithic Active Pixel Sensors (MAPS), a muon spectrometer based on Multi Wire Proportional Chambers, two dipole magnets, a...
The Tile Calorimeter (TileCal) is a sampling hadronic calorimeter covering the central region of the ATLAS experiment, with steel as absorber and plastic scintillators as active medium. The High-Luminosity phase of LHC, delivering five times the LHC nominal instantaneous luminosity, is expected to begin in 2030. TileCal will require new electronics to meet the requirements of a 1 MHz trigger,...
Mostly all operating and planned large-area space detectors for charged cosmic rays (CCR) and ฮณ -ray (GR) measurement require solid state tracking systems based on Si-microstrip (SiMS) sensors. In the context of the Pentadimensional Tracking Space Detector project (PTSD), we are currently developing a demonstrator to increase the Technological Readiness Level of LGAD Si-microstrip tracking...
The anomalous magnetic moment ($g-2$) of the muon can be determined with high precision both theoretically and experimentally, providing a sensitive test of the Standard Model. The consistency between theoretical predictions and experimental results is still under discussion and requires further verification on both sides. The electric dipole moment (EDM) of the muon, which violates...
The Compressed Baryonic Matter (CBM) experiment is currently under development at Facility for Antiproton Ion Research (FAIR) in Darmstadt, Germany. It is a fixed-target heavy-ion experiment designed to explore the Quantum Chromodynamics (QCD) phase diagram at high net baryon densities and moderate temperatures in a triggerless, free-streaming data-acquisition mode. Its Micro-Vertex Detector...
At the Large Hadron Collider, the experiments sensitive detector components are at risk of being damaged during adverse beam conditions. Thus, the beam-induced backgrounds are closely monitored at multiple locations at the collider. At the LHCb experiment, a Beam Conditions Monitor (BCM) is mounted around the beam pipe at two stations, upstream and downstream of the interaction point. It is...
Finding the answers to the long-standing questions, such as, emergence of mass and spin of the proton from partons, saturation of gluon density, and gluon momentum distribution inside the proton and nuclei, motivated the EIC [1] under construction at Brookhaven National Laboratory, USA. The first EIC detector, ePIC (electron Proton-Ion Collision experiment), consists of a central barrel...
This study aimed to develop a machine-learning approach for early failure detection in custom low-voltage power supply (LVPS) electronic boards within a quality control process. Neural Networks (NNs) were applied as an anomaly detection model to classify the data between two distinct Quality Control (QC) tests, focusing on the performance metrics of the boards. The QC tests occur before and...
540 Cathode Strip Chambers (CSC) trigger muon events and provide precise measurements of muon track coordinates in the CMS endcap region. CMS CSCs operate with 40%Ar+50%CO2+10%CF4 as a working gas mixture where CF4 provides protection against anode wire aging. However, CF4 has a Global Warming Potential (GWP) of 6630 over 100 years, and is subject to the European Union F-gas regulation which...
The CGEM-IT (Cylindrical Gaseous Electron Multiplier โ Inner Tracker) is the new inner tracker of the BESIII experiment, based in Beijing. It consists of three layers of cylindrical triple-GEM. It deploys a dedicated readout chain based on TIGER (Torino Integrated GEM Electronics for Readout) ASIC and GEMROC (GEM-Read Out Card) readout cards to collect signals from the approximately 10000...
Straw trackers based on thin wall drift tubes are being developed for several future detectors, such as the SHiP Hidden Sector, the DUNE SAND and the SPD detectors. In some cases they have to serve not only precise tracking, but also particle identification in the sub-GeV momentum region. Searches for the straw read-out options satisfying such a challenging requirement is the primary goal of...
The custom chip VMM3a has been developed by Brookhaven National Laboratory (BNL) and is capable of simultaneous measurements of both the charge and time characteristics of signals in gaseous detectors. Its flexibility makes it attractive as a front-end electronics solution for a wide range of applications, including readout systems of Straw Trackers in future High Energy and Neutrino Physics...
During recent Belle II data-taking, localized efficiency losses were observed in the Central Drift Chamber (CDC), concentrated in specific $\phi$ regions. These losses originated from consecutive front-end board failures that disabled an entire CDC superlayer. A superlayer consists of group of consecutive concentric axial or stereo wire layers essential for three-dimensional tracking. The...
A systematic study was performed on a single Thick Gas Electron Multiplier (THGEM) detector to optimize its time response. The detector consisted of a 0.8 mm double sided THGEM electrode with 0.5 mm diameter perforated holes with 0.1 mm rim, ordered in an hexagonal array with pitch of 1 mm, operated in Ar/CO$_{2}$ gas mixture. The induction gap was varied in the range between 0.1 to 2 mm....
Future high-energy experiments require advanced gaseous detectors that combine excellent space and time resolution with high-rate capability and operational robustness in harsh environments. The ฮผ-RWELL, a single-stage resistive Micro-Pattern Gaseous Detector developed by the authors, achieves typical gas gains of 2ร10^4, space resolution below 100 ฮผm, and time resolution in the range of 5-6...
The Vertex Locator (VELO) of LHCb, located at the heart of the collision, needs an upgrade with the upcoming upgrade of LHC (HL-LHC). It needs to maintain the performance by precisely tracking the particles close to the interaction point. The important challenge is to reduce the material budget and improve the timing resolution of the sub-detector to better separate the events. This talk...
In order to cope with the harsh conditions at the High-Luminosity LHC, the ATLAS experiment will replace its inner tracking system with a new, all-silicon inner tracker (ITk) during LHC long-shutdown 3. The core of ITk is a 5-layer hybrid pixel detector. This new pixel detector will feature a sensitive surface of about 13m$^2$ and employ several different silicon sensor technologies as well as...
The High-Luminosity LHC (HL-LHC), starting in 2029, will increase instantaneous luminosity by a factor ~ 7.5, posing major challenges for muon triggering and reconstruction in CMS. To address this, new Gas Electron Multiplier (GEM) detectors are being installed in the forward muon system. The first GEM station (GE1/1) was fully deployed during Long Shutdown 2, with the second (GE2/1) entering...
The High Luminosity LHC (HL-LHC) phase, scheduled to start in 2030 and deliver 3000 fb-1 in 10 years, will offer unique potential for precision measurements and searches for rare processes. However, it will also pose significant challenges for the detectors due to extremely high radiation levels and the large number of simultaneous interactions per bunch crossing (up to 200). To mitigate the...
The Super Tau-Charm Facility (STCF) is a high-luminosity electron-positron collider proposed in China. It will operate in an energy range of 2-7GeV with a peak luminosity higher than 0.5*10^35 cm^2 s^-1. The STCF physics goals require efficient and precise reconstruction of exclusive final states produced in the e+e- collisions. This places stringent demands on the performance of the STCF...
The Super Tau-Charm Facility (STCF) is a new-generation electron-positron collider in the tau-charm energy region, with a peak luminosity of โฅ$0.5\ast{10}^{35}cm^{-2}s^{-1}$ at 4 GeV. The high luminosity gives rise to a high event rate and high beam background, presenting a significant challenge to the STCF detector. The outmost layer of the STCF detector is instrumented with a muon detector...
The Super Tau-Charm Facility (STCF) is the next-generation high luminosity $e^+e^-$ collider in China with a center-of-mass energy ($\sqrt{s}$) from $2$ to ~$7$ $GeV$ and a peak luminosity of at least $0.5\times10^{35}$ $cm^{-2}s^{-1}$ optimized at $\sqrt{s}=4$ $GeV$. A high event rate and a high beam background count rate of over 1 MHz per module places new demands on the electromagnetic...
The AC-LGAD technology is chosen to be used as the time of flight detector and out track for the Circular electron-positron collider (CEPC). As suggested by the CEPC board, the time of flight is urgent for the flavor physics in CEPC, especially for the k/p and k/pi separation in the low-energy part. The AC-LGAD based ToF & out tracker would be located between the TPC and ECAL which would cover...
The proposed Super Tau-Charm Facility (STCF) is a next generation high-luminosity $\textit{e}^{+}\textit{e}^{-}$ collider with the designed peak luminosity exceed $0.5ร10^{35} cm^{-2}s^{-1}$. To achieve high-precision particle detection at high event rate, especially for low-momentum particles, the inner tracker (ITK) should feature high spatial resolution, low power consumption, low material,...
The ALICE experiment will install the Inner Tracking System 3 (ITS3) during LHC Long Shutdown 3 (2026โ2030), replacing the three innermost ITS2 layers with the first fully cylindrical, wafer-scale silicon vertex detector. ITS3 employs Monolithic Active Pixel Sensors (MAPS) fabricated in a 65 nm CMOS process, thinned to 50 ยตm and bent to radii of 19, 25, and 32 mm. Wafer-scale stitching enables...
The ALICE experiment at the CERN LHC is preparing to upgrade its innermost vertex detector to the third-generation Inner Tracking System (ITS3) during the Long Shutdown 3 (LS3, 2026โ2030). ITS3 will pioneer the first truly cylindrical, wafer-scale monolithic pixel tracker in high-energy physics. The detector concept relies on wafer-scale stitched CMOS sensors bent to radii of 19, 25, and 32...
In view of LHC Run4 the ALICE experiment will upgrade the innermost three layers of its Inner Tracking System with an innovative vertex detector based on wafer-scale bent Monolithic Active Pixel Sensors. Each layer is realized with only two 50ยตm thick sensors which are bent to form a cylinder and held in place with carbon foam supports.
The application of air cooling and the integration of...
High-Voltage CMOS (HV-CMOS) pixel detectors, with excellent radiation hardness and fast signal collection enabling nanosecond-level timing and micron-level spatial resolution, are chosen as the promising candidates both for the CEPC Inner Silicon Tracker and LHCb Upstream tracker upgrade II. Our R&D using a 55โฏnm process has produced the COFFEE series of prototype chips. Following verification...
The NEWS-G experiment, located at the Sudbury Neutrino Observatory (SNO) in Canada, is searching for Weakly Interacting Massive Particles (WIMPs) in the sub-GeV mass range. This direct dark matter detection experiment uses Spherical Proportional Counters (SPCs) as detectors, which measure nuclear recoils in noble gases. Since nuclear recoils are quenched compared to electronic recoils, precise...
SNO+ is a liquid scintillator-based neutrino detector that aims to detect neutrino-less double beta decay (NDBD) which can confirm whether the neutrino is its own antiparticle or not. The detection process demands a very low radiogenic background level, good energy resolution, and at the same time large mass of isotopes in the detector. 130Te is chosen due to its high isotopic abundances Page...
