Conveners
Large Detector Systems: The Far Future
- Manfred Krammer (CERN)
Large Detector Systems: Today
- Gagan Mohanty (Tata Inst. of Fundamental Research (IN))
Large Detector Systems: The Near Future
- Joachim Josef Mnich (CERN)
Large Detector Systems: Future Tracking
- Marko Dragicevic (HEPHY Vienna)
Large Detector Systems: Future Calorimetry and Timing
- Yuri Tikhonov (Budker INP)
Large Detector Systems: The Far Future
- Manfred Jeitler (Austrian Academy of Sciences (AT))
The European Strategy for Particle Physics Update recommended that “Organised by ECFA, a roadmap should be developed by the community to balance the detector R&D efforts in Europe, taking into account progress with emerging technologies in adjacent fields“. This Roadmap which is based on the input of the community and was developed within the Detector R&D Panel, was approved by ECFA and...
The EIC’s ability to collide high-energy electron beams with high-energy ion beams will provide access to those regions in the nucleon and nuclei where their structure is dominated by gluons. Moreover, polarized beams in the EIC will give unprecedented access to the spatial and spin structure of gluons and sea-quarks in the proton and light nuclei.
The EIC will be an unprecedented collider...
During the second long shutdown of the LHC, the ALICE Inner Tracking System (ITS) has been replaced with a full-pixel detector constructed entirely with CMOS monolithic active pixel sensors (ITS2).
The ITS2 consists of three inner layers with 50um thick sensors and four outer layers with 100um thick sensors. The entire tracker covers 10 m^2 and comprises approximately 12.5 billion pixels with...
After multiple dedicated commissioning phases, the SuperKEKB accelerator in Tsukuba, Japan, started providing e+e- -collisions to the Belle II experiment equipped with a new 6 layer silicon VerteX Detector (VXD) in 2019. The two innermost layers of the VXD are comprised of two layers of PiXel Detector (PXD). It is made from all-silicon modules integrating support structure and sensor. The...
Since the start of data taking in spring 2019 at the Super-KEKB collider (KEK, Japan) the Silicon Vertex Detector (SVD) has been operating reliably and with high efficiency, while providing high quality data: high signal-to-noise ratio, greater than 99% hit efficiency, and precise spatial resolution. These attributes, combined with stability over time, results in good tracking...
After ten years of intense work, the two New Small Wheels (NSW) for the upgrade of the Atlas Muon Spectrometer are now ready for final commissioning and to collect data in LHC Run3, starting February 2022.
The NSW is the largest phase-1 upgrade project of ATLAS. Its challenging completion and readiness for data taking is a remarkable achievement of the Collaboration.
The two wheels (10...
The Mu2e experiment will search for a Standard Model violating rate of neutrinoless conversion of a muon into an electron in the presence of an aluminum nucleus. Observation of this charged-lepton flavor-violating process would be an unambiguous sign of new physics. Mu2e aims to improve upon previous searches by four orders of magnitude. This requires the world's highest-intensity muon beam, a...
In the quest for the Lepton Flavour Violation (LFV) the MEG experiment at the Paul Scherrer Institut (PSI) represents the state of the art in the search for the charged LFV $\mu^+ \rightarrow e^+ \gamma$ decay. MEG set the most stringent upper limit on the BR$(\mu^+ \rightarrow e^+ \gamma) \leq 4.2 \times 10^{-13}$ ($90\%$ confidence level), imposing one of the tightest constraints on models...
An upgraded silicon pixel detector, called the phase-1 pixel detector, was constructed for the higher instantaneous luminosity and total radiation fluence experienced during the Run 2 period of the Large Hardon Collider (LHC) and was installed in the Compact Muon Solenoid (CMS) in 2017. The upgraded detector is comprised of four barrel layers and three end-cap disks, with modules in the...
During the long shutdown 2 of the LHC, the ALICE Time Projection Chamber (TPC) was upgraded in order to cope with the increased Pb-Pb interaction rate of 50 kHz planned for Run 3. The MWPC-based amplification system was replaced by Gas Electron Multipliers (GEM). These avoid the long dead time caused by the ion gating grid of the MWPC, and hence allow for a continuous readout. At the same...
The ATLAS experiment is currently preparing for an upgrade of the Inner Tracking for High-Luminosity LHC operation, scheduled to start in 2027. The radiation damage at the maximum integrated luminosity of 4000/fb implies integrated hadron fluencies over 2x10$^{16}$ n$_{eq}$/cm$^2$ and tracking in very dense environment call for a replacement of the existing Inner Detector. An all-silicon Inner...
LHCb physics achievements to date include the world's most precise measurements of the CKM phase $\gamma$ and the rare decay $B^0_s \rightarrow \mu^+ \mu^-$, the discovery of $C\!P$ violation in charm, and intriguing hints of lepton-university violation. These accomplishments have been possible thanks to the enormous data samples collected and the high performance of the sub detectors, in...
LHCb is undergoing a major upgrade during LHC LS2 to be completed in February 2022 to cope with increased instantaneous luminosities and a trigger-less 40 MHz read-out to improve on many world-best physics measurements. A light and homogeneous detector based on plastic scintillating fibres will be installed downstream of the LHCb dipole magnet.
The Scintillating Fibre (SciFi) tracker covers...
ALICE is developing the ITS3 (inner tracker system) as upgrade of the inner layers of the presently installed ITS with the aim to improve the pointing resolution by factor of two and to lower the material budget to an unprecedented value of 0.05% X0 per layer.
Its three layers are based on Monolithic Active Pixel Sensors (MAPS) thinned down to 20-40 µm. The configuration employs...
The HL-LHC opens up new windows for exciting discoveries but also brings about new challenges due to the high pileup environment of approximately 200 interactions per collision. Precise measurements of track and vertex timing can efficiently mitigate these pileup effects. The CMS detector will be upgraded with a MIP timing detector (MTD) capable of providing ultra-fast timing information of...
The increase of the particle flux at the HL-LHC with instantaneous luminosities up to L ≃ 7.5 × 10$^{34}$ cm$^{−2}$s$^{−1}$ will have a severe impact on the ATLAS detector performance. The forward region where the liquid Argon calorimeter has coarser granularity and the inner tracker has poorer momentum resolution will be particularly affected. A High Granularity Timing Detector (HGTD) will be...
The CMS Collaboration is preparing to build replacement endcap calorimeters for the HL-LHC era. The new high-granularity calorimeter (HGCAL) is, as the name implies, a highly-granular sampling calorimeter with approximately six million silicon sensor channels (~1.1cm^2 or 0.5cm^2 cells) and about four hundred thousand scintillator tiles readout with on-tile silicon photomultipliers. The...
The Belle II experiment at the SuperKEKB e+e- collider has started data taking in 2019 with the perspective of collecting 50ab-1 in the course of the next several years. The detector is working well with very good performance, but the first years of running are showing novel challenges and opportunities for reliable and efficient detector operations with machine backgrounds extrapolated to...
The future ALICE programme for Run 5 and beyond relies on a novel detector concept, ALICE 3, to address the determination of QGP properties that will remain inaccessible with existing and planned detectors in Run 3 and 4. Amongst others, this requires next-level measurements of dileptons down to very low invariant mass as well as the clean reconstruction of heavy-flavour hadrons. They call for...
The aim of the LHCb Upgrade II is to operate at a luminosity in the range of 1 to 2 x 10$^{34}$ cm$^{-2}$ s$^{-1}$ to collect a data set of 300 fb$^{-1}$. This will require a substantial modification of the current LHCb ECAL due to high radiation doses in the central region and increased particle densities. The ECAL has to provide good energy and position resolutions in these conditions....
The particle physics community is currently studying collider projects for the post-LHC era. Among those, muon colliders are particularly interesting due to their ability to reach multi-TeV energies in the environment typical for lepton colliders where backgrounds due to other physics processes are significantly lower than at a hadron collider experiment. However, as muons are unstable...
