Conveners
Particle Detectors: DET 1C
- Ted Kolberg (Florida State University (US))
- Karol Krizka (Lawrence Berkeley National Lab. (US))
- Ulrich Heintz (Brown University (US))
Particle Detectors: DET 2C
- Karol Krizka (Lawrence Berkeley National Lab. (US))
- Dmitri Denisov (Brookhaven National Laboratiry)
- Pampa Ghose (Florida State University (US))
Particle Detectors: DET 3C
- Hong Ma (Brookhaven National Laboratory (US))
- Massimo Capasso (Barnard College, Columbia University)
Particle Detectors: DET 4C
- E. Craig Dukes (University of Virginia)
- Massimo Capasso (Barnard College, Columbia University)
Particle Detectors: DET 4L
- Ke Li (University of Washington (US))
- Dmitri Denisov (Brookhaven National Laboratiry)
Particle Detectors: DET 5C
- Ke Li (University of Washington (US))
- Jinlong Zhang (Argonne National Laboratory (US))
Particle Detectors: DET 6J
- Hannah Elizabeth Herde (SLAC National Accelerator Laboratory (US))
- Dmitri Denisov (Brookhaven National Laboratiry)
Particle Detectors: DET 6C
- Zijun Xu (SLAC National Accelerator Laboratory (US))
- Jinlong Zhang (Argonne National Laboratory (US))
The CMS electromagnetic calorimeter (ECAL) of the Compact Muon Solenoid (CMS) is a high granularity lead tungstate crystal calorimeter operating at the CERN Large Hadron Collider. The ECAL is designed to achieve excellent energy resolution which is crucial for studies of Higgs boson decays with electromagnetic particles in the final state, as well as for searches for new physics involving...
The CMS electromagnetic calorimeter (ECAL) is a high resolution crystal calorimeter operating at the CERN LHC. The on-detector readout electronics digitizes the signals and provides information on the deposited energy in the ECAL to the hardware-based Level-1 trigger system. The L1 trigger system receives information from different CMS subdetectors at 40 MHz, the proton bunch collision rate,...
To address the challenges of providing high performance calorimetry and other types of instrumentation in future experiments under high luminosity and difficult radiation and pileup conditions, R&D is being conducted on promising optical-based technologies that can inform the design of future detectors, with emphasis on ultra-compactness, excellent energy resolution and spatial resolution, and...
A challenge in large LArTPCs is efficient photon collection for low energy, MeV-scale, deposits. Past studies have demonstrated that augmenting traditional ionization-based calorimetry with information from the scintillation signals can greatly improve the precision of measurements of energy deposited. We propose the use of photosensitive dopants to efficiently convert the scintillation...
The “muon-to-electron conversion” (Mu2e) experiment at Fermilab will search for the Charged Lepton Flavour Violating neutrino-less coherent conversion of a muon into an electron in the field of an aluminum nucleus. The observation of this process would be the unambiguous evidence of physics beyond the Standard Model. Mu2e detectors comprise a straw-tracker, an electromagnetic calorimeter and...
The upgrade of the Mu2e experiment at Fermilab, Mu2e-II, is proposed to improve the expected Mu2e sensitivity. Mu2e-II will search for the neutrinoless conversion of a muon into an electron in the field of an Al nucleus, with a sensitivity up to few 10$^{-18}$.
As for Mu2e, the tracker system for the Mu2e-II will be responsible for precisely measuring the momentum of the conversion electron...
The Inner Tracker is an all-silicon detector that will replace ATLAS’ inner tracking layers for the High Luminosity LHC. SLAC National Accelerator Laboratory is responsible for the loading and integration of the pixel layers closest to the LHC Beamline, the Inner System. We’ll mount the silicon pixel detectors on their mechanical supports, then connect the loaded mechanical supports (“loaded...
The inner tracking detector of the ATLAS experiment at CERN is currently preparing for an upgrade to operate in the high Luminosity LHC, scheduled to start in 2027. A complete replacement of the existing Inner Detector of ATLAS is required to cope with the expected radiation damage. The all-silicon Inner Tracker (ITk) design under construction composes a mixture of Pixel and Strips layers. At...
The Upstream Tracker (UT) is a silicon tracking sub-detector currently under construction that will sit just upstream of LHCb's dipole magnets during Run III of the LHC. It improves on the previous tracker in several ways, including enabling LHCb's new 40 MHz fully-software trigger, and comprises 968 silicon sensors mounted in four planes together with their requisite readout electronics and...
The Large Hadron Collider (LHC) will soon undergo an upgrade, referred to as the High-Luminosity LHC (HL-LHC), which will increase the instantaneous luminosity beyond the LHC's design value. The ATLAS experiment is upgrading the innermost portion of the detector to the ITk pixel detector to accommodate the increase in luminosity. The RD53 collaboration was formed to develop the ASIC read out...
In Run 3 of the LHC (2022-2024), the Level-1 trigger system of the ATLAS experiment will introduce three feature extractors (FEX): eFEX for electron/photon, jFEX for jets/MET, and gFEX for global quantities. The increased calorimeter granularity is useful for all physics channels that deposit energy in the calorimeter, from high-bandwidth items like electrons to MET (missing transverse...
The challenging experimental environment at the High Luminosity LHC (HL-LHC) will require replacement of the existing endcap calorimeters of the CMS experiment. In their place, the new HGCAL detector will offer a radiation hard, high granularity calorimeter which meets the challenge and offers improved abilities for physics object reconstruction. We review the design and current status of the...
The HL-LHC upgrade of the CMS experiment includes a replacement of the endcap calorimeters with the new HGCAL High-Granularity Calorimeter. Development of radiation-hard 8" silicon sensors is an important part of the upgrade project. We will review the status of the sensor development, including radiation tests, and describe the plans towards the full sensor production.
The HGCAL endcap calorimeter of the CMS experiment at HL-LHC will include a hadronic compartment that is based partly on the SiPM-on-tile concept. Building a performant SiPM-on-tile system involves the development and testing of rad-hard scintillators and SiPMs to meet the challenges of the HL-LHC experimental environment. We will review the design of the SiPM-on-tile part of the calorimeter,...
T2K is a long-baseline accelerator neutrino oscillation experiment which has precisely measured neutrino oscillation parameters and hinted at a significant matter-antimatter asymmetry in the lepton sector. In view of the upcoming program of upgrades of the beam intensity, a novel plastic-scintillator detector for the T2K near detector upgrade, called SuperFGD, is proposed aiming to reduce the...
A novel particle detector design is proposed utilizing a modified bandgap reference circuit. The output of the circuit is calibrated to be proportional to the work function of gallium nitride, which provides a reference voltage that is independent of temperature variations, supply variations and loading. It is hypothesized that particle interactions with the detector cause temporal...
The ATLAS missing transverse momentum trigger is susceptible to the impact of multiple proton-proton interactions (pileup) in the same event. To mitigate the impact of pileup, sophisticated subtraction schemes are utilized. During the Run 2 data-taking (2015-2018), these methods focused only on information from the calorimeter due to the limited time available for the algorithms to utilize...
The Mu2e experiment at Fermilab will search for the charged-lepton flavor-violating process of a neutrinoless muon-to-electron conversion in the presence of a nucleus. The sensitivity goal of the experiment is four orders of magnitude below the current strongest limits on this process. This requires all backgrounds to sum to fewer than one event over the lifetime of the experiment. One major...
The Large Hadron Collider at CERN is upgrading to a High Luminosity version that will increase the instantaneous luminosity to 5x10^(34) cm^(-2)s^(-1). This substantial increase in rate means that the current experiments will need to be modified in order to cope with the increased rates. The Compact Muon Solenoid (CMS) detector is installing a new muon station consisting of 144 Gas Electron...
The cosmic-ray-veto detector (CRV) for the Mu2e experiment consists of four layers of plastic scintillating counters read out by silicon photo-multipliers (SiPM) through wavelength-shifting fibers. This presentation reports the testing procedure and light properties of wavelength-shifting fibers with a diameter of 1.8 mm that were purchased to improve the CRV efficiency in certain critical...
The CMS muon system plays an important role in the discovery of new physics like the Higgs boson and new particles. The next phase of the LHC is planned to increase luminosity to improve the discovery power. The high luminosity LHC (HL-LHC) will be a harsh environment of pp collisions and will require high-performance muon trigger and muon track reconstruction, especially in the endcap region....
The Mu2e experiment is designed to search for the charged-lepton-flavor-violating process, $\mu^-$ to a $e^-$, with unprecedented sensitivity. The single 105-MeV electron that results from this process can be mimicked by electrons produced by cosmic-ray muons traversing the detector. An active veto detector surrounding the apparatus is used to detect incoming cosmic-ray muons. To reduce the...
At the high luminosity Large Hadron Collider (LHC), the instantaneous luminosity will be up to $5-7.5 \times 10^{34} cm^{-2} s^{-1}$. This necessitates the upgrade of the muon spectrometer of the ATLAS detector. The Small Wheel, the innermost station of muon end-cap system, will be replaced by the 'New Small Wheel (NSW)'. For the high luminosity runs, the new system is required to improve...
The Mu2e experiment aims to measure the neutrinoless, muon-to-electron conversion process in the field of a nucleus with a single event sensitivity of $2.8×10^{-17}$. The Mu2e tracker utilizes an array of straw tube panels in a solenoidal magnetic field to track the conversion electrons and measure their momenta. Using pre-production panels, tracker operation and diagnosis schemes were...
Advances in semiconductor research and development have enabled engineering of scintillation materials based on quantum dot (QD) photoluminescence. This has yielded low-mass and radiation tolerant scintillators with excellent timing and light-yield performance awaiting application in high energy physics experiments. We introduce a detector system of such a scintillator that consists of bulk...
The Mu2e experiment will search for Beyond-the-Standard-Model, Charged Lepton Flavor Violation (CLFV) in the neutrinoless muon-to-electron conversion process $\mu^- + \text{Al}\rightarrow e^- + \text{Al}$. The number of muons stopped and captured by the aluminum Stopping Target is measured by the Stopping Target Monitor (STM) using muon atomic capture x-rays and muon nuclear capture...
ATLAS is preparing for the HL-LHC upgrade, where integrated and instantaneous
luminosity will reach unprecedented values. For this, an all-silicon Inner
Tracker (ITk) is under development with a pixel detector surrounded by a strip
detector. The strip system consists of 4 barrel layers and 6 endcap disks.
Prototyping has been completed successfully, and pre-production is about to...
The MIP Timing Detector (MTD) is a new sub-detector planned for the Compact Muon Solenoid (CMS) experiment at CERN, aimed at maintaining the excellent particle identification and reconstruction efficiency of the CMS detector during the High Luminosity LHC (HL-LHC) era. The MTD will provide new and unique capabilities to CMS by measuring the time-of-arrival of minimum ionizing particles with a...
The Compact Muon Solenoid (CMS) detector at the CERN Large Hadron Collider (LHC) is undergoing an extensive Phase II upgrade program to prepare for the challenging conditions of the High-Luminosity LHC (HL-LHC). A new timing detector in CMS will measure minimum ionizing particles (MIPs) with a time resolution of ~30-40 ps and hermetic coverage up to a pseudo-rapidity of |η|=3. The Endcap...
We report on new results and simulations from the Askaryan Calorimeter Experiment (ACE) which uses the coherent microwave Cherenkov emission from high energy particle showers in dielectric-loaded waveguides as calorimetric timing layers with ~1 ps resolution. Above ACE's energy threshold, a single 5 cm thick (1.4 $X_0$) layer of ACE waveguides would provide ~1 ps timing resolution, 3D spatial...
FASER (ForwArd Search ExpeRiment) fills the axial blindspot of other, radially arranged LHC experiments. It is installed 480 meters from the ATLAS interaction point, along the collision axis. FASER will search for dark matter and other new, long-lived particles that may be hidden in the collimated reaction products exiting ATLAS. FASER comprises: a magnetic spectrometer built with ATLAS...
The use of precision timing to measure time-of-flight or to distinguish events from the same bunch crossing in collider detectors has become a common feature of many modern experiments. Currently achieving a precision of 30 picoseconds is seen as an attainable goal. To move to a precision close to one picosecond will require further advances in our time measurement technology. One central...
The muon campus program at Fermilab includes the Mu2e experiment that will search for a charged-lepton flavor violating processes where a negative muon converts into an electron in the field of an aluminum nucleus, improving by four orders of magnitude the search sensitivity reached so far.
Mu2e’s Trigger and Data Acquisition System (TDAQ) uses {\it otsdaq} as its solution. Developed at...
The ATLAS experiment is currently preparing for an upgrade of the inner tracking detector for High-Luminosity Large Hadron Collider (LHC) operation, scheduled to start in 2027. The new detector, known as the Inner Tracker or ITk, employs an all-silicon design with five inner Pixel layers and four outer Strip layers. The staves are the building blocks of the ITk Strip barrel layers. Each stave...
Detectors based on Chemical Vapor Deposition (CVD) diamond have been used
successfully in beam conditions monitors in the highest radiation areas of
the LHC. Future experiments at CERN will accumulate an order of magnitude
larger fluence. As a result, an enormous effort is underway to identify
detector materials that can operate after fluences of 10^{16}/cm^2 and
10^{17}/cm^2.
Diamond...
As nuclear and particle physics facilities move to higher intensities, the
detectors used there must be more radiation tolerant. Diamond is in use at
many facilities due to its inherent radiation tolerance and ease of use. We
will present radiation tolerance measurements of the highest quality
poly-crystalline Chemical Vapor Deposition (pCVD) diamond material for
irradiations from a range...
Data acquisition (DAQ) tests of the RD53a single chip cards (SCC) using Yet Another Rapid Readout (YARR), Front-End Link eXchange (FELIX) and Reconfigurable Cluster Element (RCE) readout systems are performed. Test stand for the DAQ tests of RD53a SCC was assembled at the SLAC National Accelerator Laboratory. YARR is the system developed for readout of up to 4 SCC or one quad module. It is...
The High Luminosity upgrade of Large Hadron Collider (HL-LHC) will increase
the LHC Luminosity by an order of magnitude increasing with it the density
of particles on the detector by an order of magnitude. For protecting the
inner detectors of experiments and for monitoring the delivered luminosity,
a radiation hard beam monitor is being developed. For ATLAS we are developing
a set of...
A new silicon-strip charged-particle tracking detector (ITk strips) is a major component of the future upgrade of the ATLAS experiment for the high-luminosity LHC. The Autonomous Monitoring and Control (AMAC) chip is an application-specific integrated circuit designed to monitor voltages, currents and temperatures on each ITk module, and to control power to the front-end electronics. The ASIC...
Future operation of the LHC and HL-LHC will record a higher number of proton-proton collisions and therefore yield larger data rates and sample sizes. This will further stress real-time triggering systems and offline event reconstruction. Therefore, heterogenous computing systems utilizing both CPU and GPU hardware are being developed at CMS to deal with these tasks. Specifically, the precise...
A new silicon strip charged particle detector (ITk strips) is a major component of the future upgrade of the ATLAS experiment for the high luminosity LHC. The Autonomous Monitoring and Control (AMAC) chip is an application specific integrated circuit designed to monitor voltages and currents on each ITk module, and to control power to the front-end readout electronics. To guarantee the...
Reconstruction of charged particle trajectories (tracks) in the tracking detector surrounding the interaction region is a key component of the event reconstruction in the ATLAS experiment at the Large Hadron Collider.
The ATLAS Inner Detector (ID) records up to 1500 individual signals (hits) per proton-proton collision, and between 20 and 60 collisions happen simultaneously at each bunch...
The Hybrid Controller Chip (HCC) is an application specific integrated circuit designed as part of the silicon strip detector for the ATLAS Inner Tracker (ITk), which will be installed as part of the High Luminosity LHC upgrade program. A prototype of the HCC was produced and tested in 2018 and 2019, and the production version is currently being prepared. The HCC must read out clustered hit...
The Hybrid Controller Chip (HCC) is an application specific integrated circuit that's part of the front-end electronics for the new ATLAS Inner Tracker Strip detector, which will be installed as part of the High Luminosity LHC upgrade program. A prototype of the HCC was produced and tested in 2018 and 2019, and the production version is currently being prepared. The HCC must read out clustered...
A rate of 60 or more inelastic collisions per beam crossing was observed during LHC Run 2 and even higher vertex density, or pile-up, is expected in Run 3 and Run 4. Efficient and precise reconstruction of the primary vertex in proton-proton collision is essential for determining the full kinematic properties of the hard-scatter event and of soft interactions. Increasing instantaneous...
The monitored drift tube (MDT) chambers are the main component of the precision tracking system in the ATLAS muon spectrometer, capable of measuring the sagitta of muon tracks to an accuracy of 60 μm, which corresponds to a momentum accuracy of about 10% at pT=1 TeV. To cope with large amount of data and high event rate at HL-LHC, the present MDT readout electronics will be replaced and the...
