21 research outputs found
The Use of FPGA in Drift Chambers for High Energy Physics Experiments
In this chapter, we describe the design of a field programmable gate array (FPGA) board capable of acquiring the information coming from a fast digitization of the signals generated in a drift chambers. The digitized signals are analyzed using an ad hoc real‐time algorithm implemented in the FPGA in order to reduce the data throughput coming from the particle detector
The Tracking performance for the IDEA drift chamber
The IDEA detector concept for a future ee collider adopts an
ultra-low mass drift chamber as a central tracking system. The He-based
ultra-low mass drift chamber is designed to provide efficient tracking, a
high-precision momentum measurement, and excellent particle identification by
exploiting the cluster counting technique. This paper describes the expected
tracking performance, obtained with full and fast simulation, for track
reconstruction on detailed simulated physics events. Moreover, the details of
the construction parameters of the drift chamber, including the inspection of
new material for the wires, new techniques for soldering the wires, the
development of an improved schema for the drift cell, and the choice of a gas
mixture, will be described
Cluster counting algorithms for particle identification at future colliders
Recognition of electron peaks and primary ionization clusters in real
data-driven waveform signals is the main goal of research for the usage of the
cluster counting technique in particle identification at future colliders. The
state-of-the-art open-source algorithms fail in finding the cluster
distribution Poisson behavior even in low-noise conditions. In this work, we
present cutting-edge algorithms and their performance to search for electron
peaks and identify ionization clusters in experimental data using the latest
available computing tools and physics knowledge.Comment: 6 pages, 12 figures, Proceedings of: ACAT202
Particle identification with the cluster counting technique for the IDEA drift chamber
IDEA (Innovative Detector for an Electron-positron Accelerator) is a
general-purpose detector concept, designed to study electron-positron
collisions in a wide energy range from a very large circular leptonic collider.
Its drift chamber is designed to provide an efficient tracking, a high
precision momentum measurement and an excellent particle identification by
exploiting the application of the cluster counting technique. To investigate
the potential of the cluster counting techniques on physics events, a
simulation of the ionization clusters generation is needed, therefore we
developed an algorithm which can use the energy deposit information provided by
Geant4 toolkit to reproduce, in a fast and convenient way, the clusters number
distribution and the cluster size distribution. The results obtained confirm
that the cluster counting technique allows to reach a resolution 2 times better
than the traditional dE/dx method. A beam test has been performed during
November 2021 at CERN on the H8 to validate the simulations results, to define
the limiting effects for a fully efficient cluster counting and to count the
number of electron clusters released by an ionizing track at a fixed
as a function of the track angle. The simulation and the beam
test results will be described briefly in this issue.Comment: 2 pages, 4 figures, Proceedings of: PM202
Rappresentazioni proiettive: applicazioni nella teoria quantistica
Dottorato di Ricerca in Fisica, Ciclo XVIII, a.a. 2002-2005Università della Calabri
The DAQ system for CORAM (COsmic RAy Mission) experiment
CORAM (COsmic RAy Mission) is an experiment carried out by INFN and the University of Salento for studying and measuring several properties of the cosmic ray flux. The CORAM detector can be used both for experimental and outreach goals and it is designed also for aereospace applications. The final Data Acquisition system (DAQ) has been implemented in order to create a compact, redundant and user friendly device that can be used for several purposes. In this work we present this DAQ system and the electronics used
A Full Front End Chain for Drift Chambers
We developed a high performance full chain for drift chamber signals processing. The Front End electronics is a multistage amplifier board based on high performance commercial devices. In addition a fast readout algorithm for Cluster Counting and Timing purposes has been implemented on a Xilinx-Virtex 4 core FPGA. The algorithm analyzes and stores data coming from a Helium based drift tube and represents the outcome of balancing between efficiency and high speed performance
The construction technique of the high granularity and high transparency drift chamber of MEG II
The MEG experiment searches for the charged lepton flavor violating decay, μ +→ e+γ. MEG has already determined the world best upper limit on the branching ratio BR<4.2× 10−13 at 90% CL. An upgrade of the whole detector has been approved to obtain a substantial increase in sensitivity. Currently MEG is in upgrade phases, this phase involves all the detectors. The new positron tracker is a single volume, full stereo, small cells drift chamber (DCH) co-axial to the beam line. It is composed of 10 concentric layers and each single drift cell is approximately square 7 mm side, with a 20 μ m gold plated W sense wire surrounded by 40 μ m and 50 μ m silver plated Al field wires in a ratio of 5:1, about 12,000 wires. Due to the high wire density (12 wires/cm2), the use of the classical feed-through technique as wire anchoring system could hardly be implemented and therefore it was necessary to develop new wiring strategies. The number of wires and the stringent requirements on the precision of their position and on the uniformity of the wire mechanical tension impose the use of an automatic system to operate the wiring procedures. This wiring robot, designed and built at the INFN Lecce and University of Salento laboratories, consists of:
⋅ a semiautomatic wiring machine with a high precision on wire mechanical tensioning (better than 0.5 g) and on wire positioning (20 μ m) for simultaneous wiring of multiwire layers;
⋅ a contact-less infrared laser soldering tool;
⋅ an automatic handling system for storing and transporting the multi-wire layers.
The drift chamber is currently under construction at INFN and should be completed by the end of summer 2017 to be then delivered to PSI for commissioning
The use of FPGA in drift chambers for High Energy Physics experiments
In this chapter we describe the design of a Field Programmable Gate Array (FPGA) board capable of acquiring the information coming from a fast digitization of the signals generated in a drift chambers. The digitized signals are analyzed using an ad hoc real time algorithm implemented in the FPGA in order to reduce the data throughput coming from the particle detector
Application of the Cluster Counting/Timing techniques to improve the performances of high transparency Drift Chamber for modern HEP experiments
Ultra-low mass and high granularity Drift Chambers seems to be a better choice for modern HEP experiments, to achieve a good momentum resolution on the charged particle. We present how, in Helium based gas mixture, by counting and measuring the arrival time of each individual ionization cluster and by using statistical tools, it is possible to reconstruct a bias free estimate of the impact parameter and a more discriminant Particle Identification