Radiation monitoring is critical for evaluating the performance and lifetime of detector components in high-energy physics (HEP) experiments. Fibre Bragg grating (FBG) sensors are particularly attractive for such environments due to their small size, electromagnetic immunity, multiplexing capability, and potential radiation tolerance. Beyond conventional temperature and strain monitoring,...
The gap and crack scintillator cells (E1–E4) of the ATLAS Tile Calorimeter provide essential energy measurements in the transition region between the barrel and extended barrels, where accurate calibration is important for maintaining the calorimeter energy scale and overall detector performance. This contribution presents a measurement of the energy response of these cells using isolated...
The CMS Muon system is undergoing a comprehensive upgrade to prepare for the High Luminosity LHC (HL-LHC), ensuring optimal performance under increased particle rates and luminosity. Key upgrades include enhancements to existing detectors and electronics, as well as the addition of new muon stations to expand coverage and improve resolution. The upgrades include enhancements to both the...
The High-Luminosity Large Hadron Collider (HL-LHC) will significantly increase the instantaneous luminosity of the Large Hadron Collider (LHC), requiring major upgrades to the ATLAS detector electronics to ensure reliable data acquisition, detector control, and long-term operational stability. As part of the ATLAS Tile Calorimeter (TileCal) Phase-II upgrade. This contribution presents two...
Photomultiplier tubes (PMTs) play a critical role in the readout systems of the ATLAS TileCal. They rely on dynode materials with high secondary electron emission (SEE) and radiation tolerance. Secondary electron yields corelate with the electrical conductivity of these dynode materials which are usually extremely high band gap insulators. The conductivity in its turn is dramatically affected...
The CALICE Silicon-Tungsten Electromagnetic Calorimeter (SiW-ECAL) is a
highly-granular imaging calorimeter prototype developed to validate
particle-flow calorimetry techniques for future lepton and hadron collider
experiments, using fine transverse and longitudinal segmentation to resolve
individual showers within dense jets. We present linearity and energy-resolution
studies of the...
MinPET is an intelligent, sensor-based sorting technology to map light element concentrations inside host rock at run-of-mine throughput. This technique can bring large savings in the monetary and environmental cost of diamond mining. Conventional techniques have poor recovery rates due to occlusion of exposed diamonds and encapsulation within kimberlite. This requires scrupulous washing and...
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 scintillators are read-out by the wavelength shifting fibres coupled to the photomultiplier tubes (PMTs). The analogue signals from the PMTs are amplified, shaped, digitized by sampling the signal every 25...
The Phase-II upgrade of the ATLAS Tile Calorimeter (TileCal) for the High-Luminosity Large Hadron Collider (HL-LHC) includes the Low Voltage Box (LVBOX), which provides reliable low voltage power distribution to the front-end electronics while meeting stringent radiation and performance requirements. The production of the finger Low Voltage Power Supply Boards (fLVPSB), manufactured and tested...
Reliable temperature sensing in intense radiation fields remains an important instrumentation challenge across high-energy physics (HEP), accelerator facilities and nuclear systems. In these environments, radiation may not only produce an instantaneous perturbation to an optical sensor, but also alter its underlying calibration and therefore its ability to provide reliable measurements after...
The Phase-II upgrade of the ATLAS Tile Calorimeter (TileCal) requires a reliable Low Voltage Power Supply (LVPS) system to support stable detector operation during the High-Luminosity LHC era. The LVPS box houses multiple LVPS boards and associated control components that provide regulated low-voltage power to the TileCal front-end electronics. Following assembly at CERN, each LVPS box...
We are studying a new readout system for the ATLAS TileCal. The idea is to replace the photomultiplier tubes by SiPM arrays. This allows us to record the signal of each individual tile, This information can be used for particle flow and would be useful for the ATLAS experiment since CMS is building this highly sophisticated endcap calorimeter. We have constructed a prototype reading out 32 3...
The ATLAS experiment in the LHC Run 3 uses a two-level trigger system to select events of interest to reduce the 40 MHz bunch crossing rate to a recorded rate of up to 3 kHz of fully-built physics events. The trigger system is composed of a hardware based Level-1 trigger and a software based High Level Trigger. The selection of events by the High Level Trigger is based on a wide variety of...
The ATLAS experiment at CERN is constructing upgraded system for the "High Luminosity LHC", with collisions due to start in 2030. In order to deliver an order of magnitude more data than previous LHC runs, 14 TeV protons will collide with an instantaneous luminosity of up to 7.5x10e34 cm-2s-1, resulting in much higher pileup and data rates than the current experiment was designed to handle....
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 up to 7.5 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...
