Conveners
Poster Session 3 (Applications in Particle Physics)
- Paul Sellin (University of Surrey)
- Ioannis Kopsalis (University of Birmingham (GB))
Description
Applications in Particle Physics
The CMS Phase-1 Pixel Detector was designed to cope with an instantaneous luminosity 2 x 10^34 cm-2 s-1 and 25 ns bunch spacing with very small efficiency loss. The upgraded detector has 124M channels that features a 4-hit coverage in the tracking volume. DC-DC converters were used to deliver more power to the detector without the need of replacing the cable plant. CO2 based cooling was...
The LHCb experiment at CERN studies b- and c-hadron decays in the forward region. Physics analyses in LHCb rely on the Ring Imaging Cherenkov (RICH) detector system for the charged hadrons identification in a wide momentum range. The RICH system has provided particle identification with excellent performance during Runs 1 and 2 of LHC and it's currently undergoing a substantial upgrade to deal...
In the barrel region of the CMS muon spectrometer Drift Tubes (DT) are installed. They are used for offline tracking of muons and also provide standalone trigger capabilities. Though an upgrade of the DT system electronics is foreseen for High-Luminosity LHC (HL-LHC), the present DT chambers won’t be replaced, hence they will be called to operate enduring integrated doses far beyond what they...
The technique of material budget imaging (MBI) allows to experimentally assess the material budget $\epsilon=x/X_0$ of a material with thickness $x$ and its radiation length $X_0$. Here, multi-GeV electrons from a test beam facility such as the DESY-II test beam are used. This novel technique exploits the fact that the beam particles are deflected by multiple Coulomb scattering following a...
The pre-production of the strip sensors for the Inner Tracker (ITk) of the ATLAS Upgrade detector at CERN has finished, comprising about 5% of the total number of sensors to be fabricated during the 4-year production period (approximately 22000). All sensors are tested by the collaboration according to the Quality Control procedures. For Quality Assurance, a number of test structures, designed...
I will present an interferometric technique suitable for the measurement of particle masses. The goal of this study is to attain the capability of measuring particle-antiparticle mass ratio in a way that is independent of particle electric charges, a technique that is gaining interest in view of recent developments of experiments looking for CPT violations and antimatter gravitational fall....
Traditional hybrid silicon sensors are the most common tracking sensor technology in current particle physics experiments with high rates. However the limitations imposed by their composite structure make them unsuitable for many future experiments that require low material budget and high spatial resolution. High Voltage-CMOS (HV-CMOS) sensors, due to their significant advantages, are...
The ALPHA (Antihydrogen Laser PHysics Apparatus) experiment aims to provide a possible solution to the baryonic asymmetry problem by testing CPT (charge conjugation, parity reversal, time reversal) theory and observing whether antimatter follows Einstein's Weak Equivalence Principle (WEP), where the acceleration due to gravity that a body experiences is independent of its structure or...
The entire CMS silicon pixel detector will be replaced for operation at the High Luminosity LHC. The novel scheme of serial powering will be deployed to power the pixel modules and new technologies will be used for a high bandwidth readout system. In this contribution the new TEPX detector will be presented, with particular focus on a novel concept to provide both power and data connectivity...
The CMS Phase-1 pixel detector was extracted from the underground cavern after the end of the LHC Run-2 in 2019 and has been kept cold to protect the silicone sensors during the long shutdown period (LS2) in 2019-2021. The LHC is now preparing for the next installment of the data taking beginning 2022. The Phase-1 pixel detector is scheduled to be installed this year and is going through a...
In preparation for the High Luminosity LHC, the whole tracker detector of the CMS experiment will be exchanged within the Phase-2 Upgrade until 2027. The new outer tracker will be made of approximately 13000 silicon sensor modules called 2S modules (consisting of two parallel mounted silicon strip sensors) and PS modules (one pixel and a strip sensor combined in a module). These modules...
The positions of the nearly twenty-thousand silicon sensors of the CMS central tracking system must be determined with a precision better than their intrinsic resolution in order to provide an optimal reconstruction of charged particle trajectories. The procedure, referred to as alignment, includes also the adjustment of the orientations and the determination of the deviation from flatness...
Position-sensitive silicon detector (PSD) is a silicon pad sensor with resistive surface connecting to electrodes on corners of the cell. PSDs are widely used in laser optics, and also used as detectors for heavy ions, while the application to particle physics has been limited to smaller signal due to smaller energy deposit, which degrades position resolutions. We are investigating PSD for...
A ten years extension of the data taking of the BESIII esperiment, recently approved, motivated an upgrade program both for the leptonic collider BEPCII (Beijing Electron Positron Collider II), that host the experiment, and for some of the subdetectors, that compose the spectrometer.
This presentation will focus on the upgrade foreseen for the inner tracker. The present multilayer drift...
Low jitter and radiation tolerant Phase-Lock-Loop (PLL) has been prevailingly researched and used in high-energy physics experiments. This paper presents the design and test results of a radiation tolerant, 4.5GHz to 5.6GHz PLL ASIC fabricated in 55 nm CMOS technology. The PLL ASIC consists of a phase frequency detector (PFD) circuit, a charge pump (CP) circuit, a low pass filter circuit...
Among the current and planned experiments of neutrinoless double-beta decay (0νββ), the high-pressure gaseous TPC stands out for its excellent energy resolution, low radioactive background and good scalability. Moreover, high position resolution can be maintained with an appropriate charge readout scheme for TPC to further suppress the background through ionization imaging. A low noise sensor,...
Deserializer with high speed and radiation tolerant features is used as key component of data transmission system in high-energy physics experiments. It is mainly used in the downlink transmission to realize serial-to-parallel conversion of data. This paper presents the design and test results of a 16 Gbps 1:16 deserializer chip fabricated in 55 nm CMOS technology. The chip adopts a tree-type...
The particle physics experiments produce the data in the order of tens GB per hour. Due to the limited resources for data storage and offline processing this amount has to be reduced with respect to the events strongly related to the ongoing experiment. Data acquisition (DAQ) system is the key component dedicated to data collecting and storing at different stages of the particle detector...
