Conveners
Solid State Detectors - Poster session
- Jerome Baudot (IPHC - IN2P3)
- Claudia Gemme (Istituto Nazionale di Fisica Nucleare)
After the manufacture and delivery of a state-of-the-art detection system for the XRF-XAFS beamline of the synchrotron light source SESAME, a new and improved detection system was realized. This new multichannel modular detection system based on Silicon Drift Detectors consists of 8 monolithic multipixel arrays, each comprising 8 (SDD) cells with a total area of 570 mm$^2$. As the previous...
The Inner Tracker (ITk) will be one of the major upgrades that the ATLAS experiment will undergo during the long shutdown 3 of the LHC. The ITk Pixel detector will be composed by an Inner System (IS), two Endcaps (EC) and an Outer Barrel (OB). The OB itself will be composed of more than 4,000 pixel modules, arranged on modular "local support" structures (longerons and half rings).
In total,...
PIONEER is a next-generation experiment to measure the charged-pion branching ratio to electrons vs muons, Re/μ and pion beta decay (Pib) π+→π0eν. Re/μ provides the best test of e-µ universality and is extremely sensitive to new physics at high mass scales; Pib could provide a clean high precision value for Vud. PIONEER was approved with high priority at the Paul Scherrer institute (PSI), with...
The ATLAS collaboration is working on a major upgrade of the Inner-Tracker, able to withstand the extreme operational conditions expected for the forthcoming High-Luminosity Large Hadron Collider (HL-LHC) upgrade. During the prototyping phase of the new large area silicon strip sensors, the community observed a degradation of the breakdown voltage (down to 200-500 V from $\geq$1 kV in bias...
Monolithic Active Pixel Sensors (MAPS) are a promising technology that provides large sensitive areas at potentially low power consumption and low material budget. The ARCADIA project is developing Fully Depleted MAPS (FD-MAPS) with an innovative sensor design, that uses a backside bias to improve charge collection efficiency and timing over a wide range of operational and environmental...
For the HL-LHC upgrade the current ATLAS Inner Detector is replaced by an all-silicon system. The Pixel Detector will consist of 5 barrel layers and a number of rings, resulting in about 14 m2 of instrumented area. Due to the huge non-ionizing fluence (1e16 neq/cm2) and ionizing dose (5 MGy), the two innermost layers, instrumented with 3D pixel sensors (L0) and 100μm thin planar sensors (L1)...
The FOOT (FragmentatiOn On Target) experiment aims to measure the double differential cross-sections that are in the energy range of therapeutic interest (100-400 MeV), to produce sufficiently precise measurements. These data will allow a better modelling of the dose imparted to the health tissues traversed, and therefore an accurate assessment of the damage induced during therapy. To succeed...
Both the current upgrades to accelerator-based HEP detectors (e.g. ATLAS, CMS) and also future projects (e.g. CEPC, FCC) feature large-area silicon-based tracking detectors. Using production lines of industrial CMOS foundries to fabricate silicon radiation detectors, both for pixels and for large-area strip sensors would be most beneficial in terms of availability, throughput and cost. In...
The high luminosity upgrade of the Large Hadron Collider, foreseen for 2028, requires the replacement of the ATLAS Inner Detector with a new all-silicon Inner Tracker (ITk). The expected total integrated luminosity of 4000 fb^−1 means that the strip part of the ITk detector will be exposed to the total particle fluences and ionizing doses reaching the values of 1.6E15 1 MeV n_eq/cm^2 and 0.66...
The ALICE collaboration is currently carrying out the final commissioning the upgraded Inner Tracking System (ITS), a new ultralight and high-resolution silicon tracker designed to match the requirements of the experiment in terms of material budget, readout speed and low power consumption of the sensors. The upgraded ITS has an active area of about 10m2, consisting of 24120 Monolithic Active...
The unprecedented density of charged particles foreseen at the next generation of experiments at future hadronic machines poses a significant challenge to the tracking detectors, which are expected to withstand extreme levels of radiation as well as to be able to efficiently reconstruct a huge number of tracks and primary vertices. To meet this challenge new extremely radiation hard materials...
Single Photon Avalanche Diodes (SPADs) are getting rising attention in the field of optical sensing systems, since they can offer outstanding time and space resolution in a wide set of applications. In addition, SPADs can take advantage of CMOS planar technology, which enables the integration of both sensor and processing electronics in the same chip.
This work will present the results from...
The current prototype for the proposed sensor was developed in 180nm TSI HV-technology with a 24x40 pixel matrix. Single pixels exploit deep nwells on p-substrate diodes. Secondary particles are collected on the deep n-wells which include the front-end pixel electronics. Front-end electronics contains an integrator in addition to a comparator. Each time the charge acquired surpasses the...
In the past few years, thanks to the introduction of controlled low gain and to the optimization of the sensor design, silicon sensors have become the detector of choice for the construction of 4D trackers. Presently, both the ATLAS and CMS experiments are building large timing layers (about 20 m2) to add to their experiment the capabilities of time-tagging charge particles.
In this...
The MALTA pixel chip is a 2 cm x 2 cm large monolithic sensor developed in the 180 nm TowerJazz imaging process. The chip contains four CMOS transceiver blocks at its sides which allow chip-to-chip data transfer. The power pads are located mainly the side edges on the chip which allows for chip-to-chip power transmission. The MALTA chip has been used to study module assembly techniques using...
Owing to its excellent radiation hardness, diamond has been widely used as solid-state particle detectors and dosimeters in high-radiation environments. A system based on single-crystal synthetic-diamond detectors has been developed and installed in order to monitor the radiation level and detect beam losses near the interaction region of the SuperKEKB collider for the the Belle II...
Major advances in silicon pixel detectors, with outstanding timing performance, have recently attracted significant attention in the community. In this work we present and discuss the use of state-of-the-art Geiger-mode APDs, also known as single-photon avalanche diodes (SPADs), for the detection of minimum ionizing particles (MIPs) with best-in-class timing resolution. The SPADs were...
In order to cope with the occupancy and radiation doses expected at the High-Luminosity LHC, the ATLAS experiment will replace its Inner Detector with an all-silicon Inner Tracker (ITk), containing pixel and strip subsystems. The strip detector will be built from modules, consisting of one or two n+-in-p silicon sensors, PCB hybrids accommodating the front-end electronics, and powerboard...
The ATLAS experiment is currently preparing for an upgrade of the inner tracking detector for High-Luminosity 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 consists of a low-mass...
The High Luminosity-Large Hadron Collider is expected to start in
2027 and to provide an integrated luminosity of 3000 fb-1 in ten year,
about a factor 20 more than what was collected so far. This high
statistics will allow to perform precise measurements in the Higgs sector and
improve searches of new physics at the TeV scale.
The luminosity needed is L ~7.5 1034 cm-2 s-1,...
In the last few years, Low Gain Avalanche diodes (LGAD) have been considered one of the most promising solutions for timing application in HEP experiments, as well as for 4-dimensional tracking, due to some important advantages: larger internal signal, better time resolution and higher radiation hardness with respect to standard p-i-n based sensors.
Although the LGAD technology recently...
Depleted Monolithic Active Pixel Sensors are of highest interest at the HL-LHC and beyond for the replacement of the Pixel trackers in the innermost radii of HEP experiments where maximum performance, and cost effectiveness is required. They aim to provide high granularity and low material budget over large surfaces and ease of integration. This research includes the development of radiation...
Experiments at the future Electron-Ion Collider (EIC) pose stringent requirements on the tracking system for the measurement of the scattered electron and charged particles produced in the collision, as well as the position of the collision point and any decay vertices of hadrons containing heavy quarks. Monolithic Active Pixel Sensors (MAPS) offer the possibility of high granularity in...
The ATLAS experiment will undergo substantial upgrades to cope with the higher radiation environment and particle hit rates foreseen for HL-LHC. The phase II upgrade will include the replacement of the inner detector with a completely new silicon-based tracker. The ATLAS phase II Inner Tracker (ITk) will consist of hybrid pixel detectors and silicon strip detector layers. The innermost...
The MONOLITH ERC Advanced project aims at producing a monolithic silicon pixel ASIC with picosecond-level time stamping by using fast SiGe BiCMOS electronics and a novel sensor concept, the Picosecond Avalanche Detector (PicoAD).
The PicoAD uses a multi-PN junction to engineer the electric field and produce a continuous gain layer deep in the sensor volume. The result is an ultra-fast current...
The negative capacitance (NC) feature of doped high-k dielectric HfO2 has emerged with important technological applications in CMOS nanoscale electronic devices. The discovery of ferroelectricity in HfO2 reveals a new perspective for manufacturability and scalability in multiple fields, with groundbreaking implications in the design of low power, steep switching transistors. Ferroelectricity...
The upgrade of the MEG experiment, MEGII, has started physics data taking
in fall 2021, collecting ~ 8x10^13 mu on target during 34 days of DAQ live
time, searching for the Standard Model violating Lepton Flavor Violating
Decay mu->e gamma with sensitivity improved by an order of magnitude.
During this period the pixelated Timing Counter (pTC), a time of flight
detector devoted to...
We describe the status of the ATLAS Forward Proton Detectors (AFP and ALFA) for LHC Run 3 after all refurbishments and improvements done during Long Shutdown 2. Based on analysis of Run 2 data, the expected performance of the Tracking and Time-of-Flight Detectors, the electronics, the trigger, and the readout and detector control and data quality monitoring are described. Finally, the physics...
The High Luminosity upgrade of the CERN Large Hadron Collider (HL-LHC) requires new radiation tolerant silicon pixel sensors. In the case of the CMS experiment, the first layer of pixel detectors will be installed at about 3 cm distance from the beam pipe: fluence up to 2E16 neq/cm2 (1 MeV equivalent neutrons) are expected. The 3D concept for silicon pixel sensors presents several advantages...
A silicon-based modern detector, which acts as an active-target capable of imaging particles in 3D, similar to a bubble chamber, does not exist. Ideas for a silicon active target providing continuous tracking were put forward already almost 40 years ago, but the required technology did not exist until recently.
In this talk, a project to construct the first silicon active target based on...
Data quality monitoring (DQM) and data certification (DC) are of vital importance to advanced detectors such as CMS, and are key ingredients in assuring solid results of high-level physics analyses using its data. The current approach for DQM and DC is mainly based on manual monitoring of reference histograms summarizing the status and performance of the detector. This requires a large amount...
The TRISTAN project is the upgrade of the KATRIN experiment that will search for sterile neutrinos with mass in the keV range through precise measurements of the entire Tritium $\beta$-spectrum.
For this purpose, the current KATRIN detector must be replaced with a multipixel detector based on Silicon Drift Detectors (SDDs). SDDs have a small anode capacitance that is reflected in a small...
Without an external magnetic field, the position resolution of silicon sensors is about $pitch\;size/\sqrt{12}$: in identical conditions, silicon sensors with resistive read-out achieve a resolution of a few percent of the pitch size. This remarkable improvement is due to the introduction of resistive read-out in the silicon sensor design. Resistive silicon sensors are based on the LGAD...
The Belle II experiment at the SuperKEKB $e^+e^-$ collider has started developing an upgrade program on the time frame of 2026-2027 to improve the detector performance and robustness against beam-induced backgrounds.
To replace the current Belle II pixel and strip system (VXD), the VTX detector concept has been developed, a fully pixelated system based on thin Depleted Monolithic Active Pixel...
Scientific Charge-Coupled Devices (CCDs) have been widely used in astronomy and particle physics due to their great spatial resolution and sensitivity to low-energy signals. The skipper-CCD, a recently developed sensor, allows to measure single-electron signals with sub-electron noise, making its application very attractive in experiments where a low-energy threshold is required. In this talk...
The High Luminosity upgrade of the Large Hadron Collider will force the experiments to cope with harsh radiation environments. The CMS experiment is considering the option of installing 3D pixel sensors in the innermost layer of its tracking system where a fluence up to 2e16 neq/cm2 is expected. This pixel technology should maintain high detection efficiency and manageable power dissipation at...
During the era of the High-Luminosity (HL) LHC the experimental devices will be subjected to enhanced radiation levels with fluxes of neutrons and charged hadrons in the outer tracker detectors (200mm - 1200mm from the beam axis) from $3x10^{14}$ to $1x10^{15}$ neq/$cm^{2}$ and total ionization doses from 10 kGy to 750 kGy after 3000 $fb^{-1}$ of irradiation. A systematic program of radiation...
The EUDET-style telescopes provide excellent spatial resolution, but timing capabilities are limited by the rolling shutter architecture. The Telepix prototype is developed to significantly improve the time stamping of the telescopes and to provide a fast trigger signal with a selectable region of interest. This will be used to efficiently take data with small sensor prototypes.
Telepix is...
The Quality Control (QC) of pre-production strip sensors for the Inner Tracker (ITk) of the ATLAS Inner Detector upgrade has finished, and the collaboration has embarked on the QC test programme for production sensors. This programme will last more than 3 years and comprises the evaluation of approximately 22000 sensors. 8 Types of sensors, 2 barrel and 6 endcap, will be measured at many...
The High Luminosity Large Hadron Collider (HL-LHC) at CERN is expected to collide protons at a centre-of-mass energy of 14 TeV and to reach the unprecedented peak instantaneous luminosity of $5-7.5\times10^{34} cm^{-2}s^{-1}$ with an average number of pileup events of 140-200. This will allow the CMS experiment to collect integrated luminosities up to 3000-4000 fb$^{-1}$ during the project...
In the last few years, fast timing detectors have become more and more important for high energy physics and for technological applications. The CMS Proton Precision Spectrometer (PPS), operating at the LHC, makes use of 3D silicon tracking stations to measure the kinematics of protons scattered in the very forward region, as well as timing detectors based on planar single crystal CVD diamond...
High luminosity upgrades will be performed on all experiments at CERN’s Large Hadron Collider. The increased number of events will provide a larger statistic, giving a consequent better probability of discovering new phenomena. Not only will this cause an increase in radiation damage to the detector systems, but this will give an increased event overlap. As a result, radiation-tolerant...
For the upgrade of the Large Hadron Collider (LHC) to the High-Luminosity Large Hadron Collider (HL-LHC) the ATLAS detector will install a new Inner Tracker (ITk), which consists completely of silicon detectors. Although different technologies were chosen for the inner and outer part, the major risk for all silicon detectors are heat-ups, which can cause irreparable damages. As, once the...
The Belle II experiment is taking data at the asymmetric Super-KEKB collider, which operates at the Y(4S) resonance. The vertex detector is composed of an inner two-layer pixel detector (PXD) and an outer four-layer double-sided strip detector (SVD). The SVD-standalone tracking allows the reconstruction and identification, through dE/dx, of low transverse momentum tracks. The SVD information...
LHCb physics achievements to date include the world's most precise measurements of the CKM phase 𝛾 and the rare decay $𝐵^0_𝑠$→𝜇$^+$𝜇$^−$, the discovery of 𝐶𝑃 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 particular the silicon...
The proven potential of 3D geometries at higher than $10^{16} n_{eq}/cm^{2}$ radiation fluences, in combination with a small cell approach, makes them an excellent choice for a combined precision timing tracker. In this study, the timing resolution of a single 50 x 50 μm 3D pixel cell is presented in various temperatures through charge collection measurements with discrete electronics in a...
