Experimental High Energy Physics
Together with Jefferson Laboratory, CCTVal takes part in the development of software of large scalability that allows the processing of massive quantities of satellite data captured by the National Aeronautics and Space Administration (NASA), applying modern standards of distributed computing. This project has its origins in JLab, where CCTVal took part in the development of a software for physics experimental events of the CLAS12 detector, in which electrical signals of this particle detector are processed.
Collaboration in RD51, CERN
USM is a member of the Research and Development RD51 collaboration at CERN. This collaboration is meant to facilitate the development of a technology for micro-pattern gas detectors and for an advanced system of electronic reading associated to it, for applications in basic and applied research. The program´s main objective is the advancement of technological development and implementation of micro-pattern gas detectors.
Collaboration in EIC, Brookhaven National Laboratory
Pre-shower detector for calorimeters of electromagnetic shower, develop and design a detector prototype capable of differentiating between isolated gamma particles and paired gamma particles resulting from the decay of neutral pion, all generated in the collision of a high energy electron beam with a target of ions in a process called DVCS (Deeply Virtual Compton Scattering). For this a technology, based in a matrix of small sparkling crystals (crystals capable of generating light when crossed by particles with charge, like electrons and positrons), is used together with optical fiber and Multi Pixel Photo Counter of silicon or MPPCs, for its subsequent electronic reading. With the use of this matrix, it´s possible to distinguish precisely the transverse spatial position when the generated particles happen in the collision. Locating this detector between the point of collision of the particle beam and a detector of electromagnetic shower it is possible to obtain the necessary information to recognize the kind of particle incident in the detectors.
Collaboration in CLAS, Jefferson Lab
CEBAF Large Acceptance Spectrometer (CLAS) is a detector used in the study of nuclear physics and particles located in Jefferson Lab's B Hall in the United States. It is used to study the characteristics of nuclear matter through different collaborations from more than 150 physicists (CLAS collaboration). The CLAS detector is the only one that has a high level of acceptance, which allows to measure the momentum and angles of almost all the particles produced in the proton-electron collisions.
- Experiments based on the EG2 experiment ,the experiment is dedicated to the study of the hadronization through provisions deeply inelastic and semi-inclusive of electrons in the nuclei target of different kinds (Deuterium, Carbon, Iron, Lead). Such states open up the way to demystify the containment phenomena in QCD.
- Experiment of two photons exchange, The experiment is dedicated to the contribution of the study of the electrons interaction process in which an exchange of two virtual photons occurs, applying calculations of nucleon structural functions.
- Software development for CLAS12 ,development of CLARA software system of reconstruction of inventions and data analysis for the operation of the new CLAS12 detector and Electronic projects of hardware for CLAS12.
Collaboration in GlueX, Jefferson Lab
GlueX is an experiment which takes place in Jefferson Lab's D Hall, located in the United States. The experiment´s objective is to obtain important data to achieve one of Physics most fundamental challenges: the quantitative understanding of the quark and gluon confinement in the Quantum Chromodynamics (QCD). The confinement is a unique characteristic to QCD and to understand it, a comprehension of soft gluon field is required, which is responsible of linking quarks and hadrons.
Characterization of 2800 Multi Pixel Photo Counter (MPPC) ,with the objective of contributing to the GlueX experiment, the High Energy Experimental Physics team committed to the characterization of 2800 Multi Pixel Photon Counter (MPPC) developed by the Japanese company, Hamamatsu, to be incorporated to the Electromagnetic Calorimeter (ECAL) of said experiment. A design and manufacture of the required equipment was made in CCTVal´s Silab laboratory to execute the project, which had three steps applied on the MPPCs: 1) verification of the status 2) collection of parameters 3) Group measurement of 32 MMPCs. The Multi Pixel Photon Counters were sent to Jefferson Lab to be installed and later tested in GlueX, which is expected to be in operation in 2015.
Manufacture of 4000 Lightguides ,the group of High Energy Experimental Physics committed to the manufacture of 4000 Lightguides, to be destined to the Electromagnetic Calorimeter (ECAL) of the GlueX experiment. The order for this manufacture came from Jefferson Lab through an outline of the shape these parts should have. In the Silab laboratory, the most appropriate manufacturing procedure was defined, determining the material (acrylic with UVT optical properties) and the equipment needed, executing the project in three steps: 1) Manufacturing of lightguides with a CNC machine 2) Polishing of the parts with an equipment designed and manufactured in Silab 3) High pressure measurement with a highly specialized machine that for its use the laboratory team was trained. The lightguides were sent to Jefferson Lab for their installation to later be tested in GlueX, which is expected to be in operation in 2015.
Minerva Collaboration, Fermilab
Main Injector Experiment for v-A o MINVERvA, is an experiment of neutrino dispersion that uses the NuMI beam from the Fermilab Laboratory. MINERvA tries to measure the low energy of neutrino interaction as support in neutrino oscillation experiments as well as in the study of the strong dynamic of nucleons and nucleus that affect these interactions. This is done using the full range of nuclear targets from helium to carbon up to lead, and a scintillator plotter finely segmented to rebuild the event´s dynamics.
Gathering of information
CCTVal´s experimental physicist contributed to the acquisition of Low Energy data which was finalized in December 2012. The activity will continue in 2013 with the acquisition of Medium Energy data. This will be accomplished via remote experimental tasks by means of a special equipment donated by MINERvA to UTFSM.
Reconstruction of neutral pion
Conducting and improving a solid reconstruction of neutral pion which will be used in diverse MINERvA analyses, especially on those of interest to UTFSM physicists.
The ultimate goal of CCTVal´s physics for the collaboration in MINERvA is to measure the process of deep and virtual production of mesons, which can be achieved through the use of processes with neutral pion in its final state. This will be the first neutrino measurement of its kind and it will provide information without precedence about the nucleon´s structure. The analysis requires acquisition of data during the Medium Energy process (Gathering of information project) and its starting date will be in the winter of 2014. To prepare for it and to minimize experimental systematic uncertainties, an exclusive analysis of neutral pion charged current will be carried out, using Low Energy.
ATLAS Collaboration, CERN
ATLAS Upgrade experiment of the Large Hadron Collider (LHC) is an upgrading process in which the group of High Energy Experimental Physics participates with the contribution of parts for the Muon Small Wheel. This upgrade considers the modelling, manufacturing and assembling of 140 individual detectors called small-strip Thin Gap Chambers (sTGC) fulfilling the function of precise tracking of muons. This wheel is 9 meters in diameter, and a sTGC has a trapezoidal shape measuring around 1.2 meters long by 1.2 meters wide and 6 millimeters thick.