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ATLAS is preparing for an extensive modification of its detector in the course of the planned HL-LHC accelerator upgrade around 2025 which includes a replacement of the entire tracking system by an all-silicon detector (Inner Tracker, ITk). The five innermost layers of ITk will comprise a pixel detector built of new sensor and readout electronics technologies to improve the tracking performance and...
Trapezoidal shaping algorithm is widely used in the measurement of nuclear signal and spectroscopy, which contributes to reduce pile-up effect and achieve good resolution. In order to take into account the environmental noise and get high signal-to-noise ratio for dedicated systems, the Digital Penalized Least Mean Squares (DPLMS) method is employed to calculate optimum digital FIR filters. Implemented...
‘Open-field’ PET imaging of freely moving rodents is a powerful paradigm because it enables the correlation of functional and behavioral outputs in response to environmental or pharmacologic stimuli. Use of motion compensation techniques provides a feasible framework for imaging a moving animal. However, to overcome the geometric and performance limitations encountered in adapting motion compensation...
The ATLAS Liquid Argon (LAr) Calorimeters were designed and built to measure electromagnetic and hadronic energy in proton-proton collisions produced at the LHC at centre-of-mass energies up to 14 TeV and at instantaneous luminosities up to 1034cm−2s−1. An LHC upgrade is planned to enhance the luminosities to 2–3×1034cm−2s−1 and to deliver an integrated luminosity of about 300 fb−1 during Run 3 from...
Nonlinearity in the output signals for the energy deposited by gamma-ray interactions can seriously degrade the energy resolution of a pixellated detector when the signals from more than one pixel are summed to get the total deposited energy. Such nonlinearity can be calibrated on a pixel-by-pixel basis by using multiple gamma-ray check sources of various known energy photopeaks for gamma-ray energy...
This work deals with the development of a new gamma detector based on Silicon Drift Detectors (SDDs) to read out large (2″ up to 3″) LaBr3:Ce scintillators for gamma-ray spectroscopy for astronomy applications, an activity supported by ESA. SDDs, characterized by high quantum efficiency and low electronic noise, are good candidates in such applications with a wide energy range of gamma rays to be...
This paper presents the design and implementation of an electronic front-end intended for spatial detection of ion beams at counting rates higher than 106 particles per second. The readout system is made up of three main multi-channel building blocks, namely: a transimpedance preamplifier, a signal-conditioning line receiver and a charge-to-digital converter, which are properly combined with some...
The TileCal Demonstrator is a prototype for a future upgrade to the ATLAS hadron calorimeter when the Large Hadron Collider increases its luminosity in year 2023 (HL-LHC). It will be used for functionality and performance tests. The Demonstrator has 48 channels of upgraded readout and digitizing electronics and a new digital trigger capability, but stays backwards compatible with the present detector...
The MINOS (MagIc Numbers Off Stability) collaboration has developed a compact vertex tracker for in-beam gamma spectroscopy of very exotic nuclei. It comprises a cylindrical time projection chamber with a Micromegas amplification plane, a cylindrical tracker based on a curved Micromegas, and two off-the-shelf silicon detectors. In total, MINOS comprises ∼5000 channels. Besides performance goals, the...
The drift chamber based cosmic ray muon radiography prototype whose position resolution is expected to reach 50µm and pixel size expected to reach millimeter consists of three parts, detectors and preamplifiers, readout electronics, data acquisition and image reconstruction. In this paper, the readout electronics which is of high integration, high precision and high reliability with low cost is described...
This paper presents a brief overview of the upgrades of the readout electronics for the ALICE TPC detector for the coming years. The LHC is currently in Long Shutdown 1 following a successful first run, and upgrades of the detectors are underway to support the higher particle interaction rates planned for the next run. For the TPC, the increase in data due to the higher interaction rate and higher...
A potential upgrade for the front-end electronics, signal digitization, and data acquisition system of the ATLAS central hadron calorimeter for the High Luminosity Large Hadron Collider (HL-LHC) is described. A Demonstrator is being built to readout a slice of the TileCal detector with this system. The on-detector electronics includes up to 48 analog Front-end Boards for processing the PMT signals,...
In this study, a scintillation gamma camera applied to micro-SPECT is developed. The camera is composed of a NaI(Tl) scintillator, compact readout electronics and an efficient maximum-likelihood position estimator (MLPE) for a 64-anode PMT. The readout electronics consists of the symmetric charge division (SCD) circuits, the signal processing circuits and a multi-channel DAQ system to output 16 channel...
We developed an X-ray imager using Yttrium OxyorthoSilicate (Y2SiO5:Ce, YSO) scintillating crystal array and Multi-Anode PhotoMultiplier Tubes (MAPMTs) with the capability of fast X-ray counting and X-ray energy measurement. YSO scintillating crystal array has many advantages. First of all, there is no intrinsic background. We can detect the low energy X-ray photon without internal noise. The X-ray...
In this paper, a silicon matrix detector is described and the results of the cosmic ray test are given. The silicon matrix is composed by the 180 silicon PIN detectors, which covers an area of 32 * 20cm2. The data of whole detectors is read out by the ASIC chips, and suppressed by an FPGA. In the test system, the trigger is given by two plastic scintillators, which are placed above and beneath the...
This paper summarizes work performed in ITE on development of ionizing radiation detectors integrated on-chip with readout electronics. First, the construction of such detectors will be presented in brief, together with the main features of non-typical silicon process deployed, then the test structures sent for prototyping will be discussed in detail.
In this paper, an IgE antigen concentration measurement system using a frequency-shift readout method for a two-port FPW (flexural plate-wave) allergy biosensor is presented. The proposed frequency-shift readout method adopts a peak detecting scheme to detect the resonant frequency. A linear frequency generator, a pair of peak detectors, two registers, and an subtractor are only needed in our system...
A portable system has been developed for the detection of neutrons. The sensing element is a silicon radiation detector with a Boron-based converter material that detects neutrons with the 10B(n, α)7 Li reaction. The detector response has been simulated with the MCNPX Monte-Carlo software and the detector geometry has been optimized. A portable readout electronics has been built to operate the detector...
This paper introduces a readout circuit designed to interface with the fluorescence sensor presented in O'Sullivan et al., 2010., a monolithically integrated GaAs detector and vertical-cavity surface-emitting laser (VCSEL). The detector signals to be measured are low currents in the range of 5pAto15nA, with bandwidths up to 100 Hz. In order to capture binding dynamics of the fluorescent probe, as...
We previously reported Compton imaging measurements of 137Cs and 60Co laboratory sources using the full 15-channel readout of the Gamma-Ray Experimental Telescope Assembly (GRETA). We have since modified the detector geometry to accommodate a wider range of Compton scattering angles and implemented a neural networking method for the location of interaction positions with a 3-cm resolution inside the...
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