N. K. Watson
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View article: Technical design report for the CODEX-<i>β</i> demonstrator
Technical design report for the CODEX-<i>β</i> demonstrator Open
The CODEX- β apparatus is a demonstrator for the proposed future CODEX-b experiment, a long-lived-particle detector foreseen for operation at IP8 during HL-LHC data-taking. The demonstrator project, intended to collect data in 2025, is des…
View article: CODEX-b: Opening New Windows to the Long-Lived Particle Frontier at the LHC
CODEX-b: Opening New Windows to the Long-Lived Particle Frontier at the LHC Open
This document is written as a contribution to the European Strategy of Particle Physics (ESPP) update. We offer a detailed overview of current developments and future directions for the CODEX-b detector, which aims to detect long-lived par…
View article: Ultra-high granularity electromagnetic calorimetry – Results from the EPICAL-2 prototype and perspectives for digital calorimeters
Ultra-high granularity electromagnetic calorimetry – Results from the EPICAL-2 prototype and perspectives for digital calorimeters Open
An advanced prototype of a digital pixel calorimeter, EPICAL-2, has been constructed using ALPIDE MAPS sensors. It has been successfully tested with cosmic muons and with test beams at DESY and the CERN SPS. We will report on recent update…
View article: Technical design report for the CODEX-beta demonstrator
Technical design report for the CODEX-beta demonstrator Open
The CODEX-$\beta$ apparatus is a demonstrator for the proposed future CODEX-b experiment, a long-lived-particle detector foreseen for operation at IP8 during HL-LHC data-taking. The demonstrator project, intended to collect data in 2025, i…
View article: Energy calibration through X-ray absorption of the DECAL sensor, a monolithic active pixel sensor prototype for digital electromagnetic calorimetry and tracking
Energy calibration through X-ray absorption of the DECAL sensor, a monolithic active pixel sensor prototype for digital electromagnetic calorimetry and tracking Open
In calorimetry, the predominant detection principle is to measure the energy deposited by particles within a shower initiated by an incident particle. An alternative concept is a sampling calorimeter where the highly granular active layers…
View article: Performance of the electromagnetic pixel calorimeter prototype Epical-2
Performance of the electromagnetic pixel calorimeter prototype Epical-2 Open
The first evaluation of an ultra-high granularity digital electromagnetic calorimeter prototype using 1.0–5.8 GeV/c electrons is presented. The 25 × 10 6 pixel detector consists of 24 layers of ALPIDE CMOS MAPS sensors, with a pitch of aro…
View article: Results from the EPICAL-2 ultra-high granularity electromagnetic calorimeter prototype
Results from the EPICAL-2 ultra-high granularity electromagnetic calorimeter prototype Open
A prototype of a new type of calorimeter has been designed and constructed, based on a silicon-tungsten sampling design using pixel sensors with digital readout. It makes use of the Alpide MAPS sensor developed for the ALICE ITS upgrade. A…
View article: DECAL: A Reconfigurable Monolithic Active Pixel Sensor for Tracking and Calorimetry in a 180 nm Image Sensor Process
DECAL: A Reconfigurable Monolithic Active Pixel Sensor for Tracking and Calorimetry in a 180 nm Image Sensor Process Open
In this paper, we describe DECAL, a prototype Monolithic Active Pixel Sensor (MAPS) device designed to demonstrate the feasibility of both digital calorimetry and reconfigurability in ASICs for particle physics. The goal of this architectu…
View article: DECAL: A Reconfigurable Monolithic Active Pixel Sensor for use in Calorimetry and Tracking
DECAL: A Reconfigurable Monolithic Active Pixel Sensor for use in Calorimetry and Tracking Open
In this paper we describe the DECAL Monolithic Active Pixel Sensor (MAPS) for digital electromagnetic calorimetry. The sensor consists of a matrix of 64x64 55um pixels, and provides a readout at 40MHz of the number of particles which have …
View article: Calorimeters for the FCC-hh
Calorimeters for the FCC-hh Open
The future proton-proton collider (FCC-hh) will deliver collisions at a center of mass energy up to \\sqrtsfcc\\ at an unprecedented instantaneous luminosity of \\instlumi, resulting in extremely challenging radiation and luminosity condit…
View article: Tracks of hadronic showers in the CALICE Si-W ECAL physics prototype
Tracks of hadronic showers in the CALICE Si-W ECAL physics prototype Open
A detailed investigation of hadronic interactions is performed using $\pi^-$ data with energies in the range 2-10 GeV, recorded at FNAL in 2008, incident on a high granularity silicon-tungsten electromagnetic calorimeter. The region in whi…
View article: Top-quark physics at the CLIC electron-positron linear collider
Top-quark physics at the CLIC electron-positron linear collider Open
© 2019, The Author(s). The Compact Linear Collider (CLIC) is a proposed future high-luminosity linear electron-positron collider operating at three energy stages, with nominal centre-of-mass energies s = 380 GeV, 1.5 TeV, and 3 TeV. Its ai…
View article: Construction and Response of a Highly Granular Scintillator-based Electromagnetic Calorimeter
Construction and Response of a Highly Granular Scintillator-based Electromagnetic Calorimeter Open
A highly granular electromagnetic calorimeter with scintillator strip readout is being developed for future lepton collider experiments. A prototype of 21.5 $X_0$ depth and $180 \times 180 $mm$^2$ transverse dimensions was constructed, con…
View article: Hadron shower decomposition in the highly granular CALICE analogue hadron calorimeter
Hadron shower decomposition in the highly granular CALICE analogue hadron calorimeter Open
The spatial development of hadronic showers in the CALICE scintillator-steel analogue hadron calorimeter is studied using test beam data collected at CERN and FNAL for single positive pions and protons with initial momenta in the range fro…
View article: Measurement of the H$\rightarrow$WW$^*$ Branching Ratio at 1.4TeV using the semileptonic final state at CLIC
Measurement of the H$\rightarrow$WW$^*$ Branching Ratio at 1.4TeV using the semileptonic final state at CLIC Open
This note summarises a study to evaluate the potential to measure the H$\\rightarrow$WW$^*$ branching fraction at CLIC, 1.4TeV centre-of-mass energy, with the CLIC_ILD detector, using the WW$\\rightarrow$qql$\\nu$ channel. We discuss the a…