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A Heavy Flavor Tracker For Star
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Book Synopsis A Heavy Flavor Tracker for STAR. by : J. H. Thomas
Download or read book A Heavy Flavor Tracker for STAR. written by J. H. Thomas and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We propose to construct a Heavy Flavor Tracker (HFT) for the STAR experiment at RHIC. The HFT will bring new physics capabilities to STAR and it will significantly enhance the physics capabilities of the STAR detector at central rapidities. The HFT will ensure that STAR will be able to take heavy flavor data at all luminosities attainable throughout the proposed RHIC II era.
Book Synopsis A Heavy Flavor Tracker for STAR. by :
Download or read book A Heavy Flavor Tracker for STAR. written by and published by . This book was released on 2008 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: The STAR Collaboration proposes to construct a state-of-the-art microvertex detector, the Heavy Flavor Tracker (HFT), utilizing active pixel sensors and silicon strip technology. The HFT will significantly extend the physics reach of the STAR experiment for precision measurement of the yields and spectra of particles containing heavy quarks. This will be accomplished through topological identification of D mesons by reconstruction of their displaced decay vertices with a precision of approximately 50 mu m in p+p, d+A, and A+A collisions. The HFT consists of 4 layers of silicon detectors grouped into two sub-systems with different technologies, guaranteeing increasing resolution when tracking from the TPC and the Silicon Strip Detector (SSD) towards the vertex of the collision. The Intermediate Silicon Tracker (IST), consisting of two layers of single-sided strips, is located inside the SSD. Two layers of Silicon Pixel Detector (PIXEL) are inside the IST. The PIXEL detectors have the resolution necessary for a precision measurement of the displaced vertex. The PIXEL detector will use CMOS Active Pixel Sensors (APS), an innovative technology never used before in a collider experiment. The APSsensors are only 50 mu m thick and at a distance of only 2.5 cm from the interaction point. This opens up a new realm of possibilities for physics measurements. In particular, a thin detector (0.28percent radiation length per layer) in STAR makes it possible to do the direct topological reconstruction of open charm hadrons down to very low pT by the identification of the charged daughters of the hadronic decay.
Book Synopsis Calibration of the Heavy Flavor Tracker (HFT) Detector in Star Experiment at RHIC by : Norah Alanazi
Download or read book Calibration of the Heavy Flavor Tracker (HFT) Detector in Star Experiment at RHIC written by Norah Alanazi and published by . This book was released on 2015 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project is in the area of Relativistic Nuclear collisions and the commissioning of a new silicon vertex detector, the Heavy Flavor Tracker (HFT) in the STAR experiment at Brookhaven National Laboratory (BNL). BNL hosts RHIC, the Relativistic Heavy Ion Collider, the world’s most advanced dedicated heavy ion and polarized proton accelerator facility. Heavy Ion collisions at RHIC provide a unique probe into the understanding of several aspects of the behavior of nuclear, i.e. strongly inter- acting, matter. Among the many insights that can be provided is the description of parton interaction inside the hot and dense medium produced in the early stages of a collision. It also allows us to search for evidence for a phase transition in nuclear matter, a phase where partons [quarks and gluons] can move freely over an extended volume. Production of heavy quarks in high-energy nuclear collisions at RHIC occurs mainly during the initial collisions where energetic gluon and quark interactions can create heavy quarks. Thus, heavy flavor provides an ideal probe in studying the hot and dense medium created in the early phases of high-energy nuclear collisions. A detailed study of heavy flavor is essential to better understand the parton dynamics and select among competing theoretical approaches, however, precise measurements of heavy flavor are diffcult to obtain due to relatively low production rates and short lifetimes of heavy flavor hadrons. The combinatorial background in nuclear collisions makes the measurement of heavy flavor a challenging task. One approach to dramatically reduce the combinatorial background by several orders of magnitude is to separate the heavy-flavor hadron’s decay vertex from the background. This is done with the help of high resolution vertex detectors. The Heavy Flavor Tracker upgrade for the STAR experiment, which made its debut during the year 2014 RHIC run (Run14), greatly improved the experiment’s track pointing capabilities making STAR an ideal detector for heavy flavor studies. The HFT consists of three subsystems, each deploying a different silicon technology. In the heart of HFT there are two layers of 400 thin silicon pixel sensors, each sensor having about one million individual pixels. The HFT is used to extend the tracks reconstructed in the Time Projection Chamber towards the event vertex, increasing at the same time their pointing resolution from a few millimeters down to about 30 microns. The achieved resolution allow us to fully reconstruct the heavy flavor hadron’s decay vertex. In this Thesis we present work and results on HFT calibration issues using a sample of the first data taken with HFT, the Run14 data set. We will focus on event vertex resolution, alignment, particle identification and selection, and track pointing resolution. We also compare our results with previous analyses and the design goals of HFT.
Book Synopsis Performance of the Heavy Flavor Tracker (HFT) Detector in STAR Experiment at RHIC by : Manal Alruwaili
Download or read book Performance of the Heavy Flavor Tracker (HFT) Detector in STAR Experiment at RHIC written by Manal Alruwaili and published by . This book was released on 2015 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research field of this work is experimental nuclear physics. I use data taken with the Solenoidal Tracker At RHIC (STAR) experiment at the Relativistic Heavy Ion Collider (RHIC), an accelerator facility located at Brookhaven National Laboratory (BNL) in Long Island, NY. RHIC accelerates beams of protons, light and heavy ions (e.g. Au nuclei) to relativistic velocities and collides them. The collisions compress and heat the nuclear matter to very high temperatures and densities, over one trillion degrees Celsius. Under such conditions a phase transition might occur in nuclear matter, a transition, where quarks and gluons become de-confined, i.e. free to move around, forming the so-called Quark Gluon Plasma (QGP). The study of the properties of QGP, its properties and dynamics, provide a deeper understanding of Quantum Chromo-Dynamics (QCD), the theory of strong force, and the conditions in the early universe. A key finding by the experiments at RHIC is the unexpected strong suppression of heavy flavor at high transverse momentum values in Au+Au relative to elementary proton-proton collisions. Heavy quarks are mainly produced during the early stages of the collision when the most energetic interactions occur. The suppression of heavy flavor particles is caused by their interaction with the produced medium, as they traverse it. Charm and bottom quark production can be used as a tool to better probe the matter created during the early phases of the collision. The available theoretical models at that time under-predicted the observed suppression. In order to better understand the observed phenomenon and the details of the interaction between heavy flavor quarks and the hot nuclear medium, precision measurements of mesons containing charm or bottom quarks needed to be performed by the experiments. Heavy flavor mesons are unstable particles and most of them decay weakly within the first millimeter from the production vertex. Their relative low production rates, low branching ratios (B.R.) to useful channels and short lifetimes (ctau), e.g. D0 -> K¿ + pi (B.R. = 3.89% and ctau = 123μm) makes their reconstruction a challenging task. One needs a very-high precision vertex detector in order to separate the decay products from the thousands of particles produced in the collision. The STAR collab- oration built such a detector, the Heavy Flavor Tracker (HFT) with state-of-the-art silicon pixel technology. The HFT gives us the track pointing precision required to efficiently reconstruct charm and bottom meson decay vertices from background. The work in this Thesis is concentrated around the track pointing performance of HFT, sometimes called DCA (Distance of Closest Approach). More specifically we studied the HFT performance using data taken during its first physics run, Run14, that took place in 2014. We present and discuss the details of our analysis methods and the obtained results. We demonstrate that the HFT achieved and exceeded its original design goals in terms of track pointing resolution.
Book Synopsis Astroparticle, Particle and Space Physics, Detectors and Medical Physics Applications by : Michele Barone
Download or read book Astroparticle, Particle and Space Physics, Detectors and Medical Physics Applications written by Michele Barone and published by World Scientific. This book was released on 2006 with total page 1164 pages. Available in PDF, EPUB and Kindle. Book excerpt: 3D-reconstruction of absorbed dose obtained from gel-dosimeter layers. Accurate determination of radionuclidic purity and half-life reactor produced Lu-177g for metabolic radioimmunotherapy. Spatial linearity improvement for discrete scintillation imagers. High resolution, high sensitivity detectors for molecular imaging of small animals and tumor detection. Strip ionization chamber as beam monitor in the proton therapy eye treatment. Low dose, low energy 3D image guidance during radiotherapy. Alpha cyclotron production studies of the Alpha Emitter [symbol] for High-LET metabolic radiotherapy. Treatment planning with IVIS imaging and Monte Carlo simulation. Monte Carlo simulations of a human phantom radio-pharmacokinetic response on a small field of view scintigraphic device. Applications of the Monte Carlo code GEANT to particle beam therapy. Charge sharing in pixel detectors for spectroscopic imaging. Direct thickness calibration: way to radiographic study of soft tissues. A portable pixel detector operating as an active nuclear emulsion and its application for X-ray and neutron tomography -- Radiation damage. Statistical study of radiation hardness of CMS silicon sensors. SIC PbWO4 crystals for the electromagnetic calorimeter of CMS experiment. MDT chamber ageing test at ENEA casaccia neutron and gamma facilities. Behavior of thin film materials under [symbol] irradiation for astronomical optics. Full characterization of non-uniformly irradiated silicon micro-strip sensors. Beam energy monitor for 4-10 MeV electron accelerators. Optical link of the ATLAS pixel detector. Ion electron emission microscopy for SEE studies. An analysis of the expected degradation of silicon detectors in the future ultra high energy facilities. Investigation of VLSI bipolar transistors irradiated with electrons, ions and neutrons for space application. Radiation-hardness studies of high OH~ content quartz fibres irradiated with 24 GeV protons
Book Synopsis Study of Quark Gluon Plasma By Particle Correlations in Heavy Ion Collisions by : Li Yi
Download or read book Study of Quark Gluon Plasma By Particle Correlations in Heavy Ion Collisions written by Li Yi and published by Springer. This book was released on 2016-08-25 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis covers several important topics relevant to our understanding of quark-gluon plasma. It describes measurement of the third-order harmonic flow using two-particle correlations and isolation of flow and non-flow contributions to particle correlations in gold-gold collisions. The work also investigates long-range longitudinal correlations in small systems of deuteron-gold collisions. The former is related to the hydrodynamic transport properties of the quark-gluon plasma created in gold-gold collisions. The latter pertains to the question whether hydrodynamics is applicable to small systems, such as deuteron-gold collisions, and whether the quark-gluon plasma can be formed in those small-system collisions. The work presented in this thesis was conducted with the STAR experiment at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory, where the center-of-mass energy of both collision systems was a factor of 100 larger than the rest mass of the colliding nuclei. The results contained in this thesis are highly relevant to our quest for deeper understanding of quantum chromodynamics. The results obtained challenge the interpretation of previous works from several other experiments on small systems, and provoke a fresh look at the physics of hydrodynamics and particle correlations pertinent to high energy nuclear collisions.
Download or read book Quark Matter written by and published by . This book was released on 2005 with total page 1004 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Energy and Water Development Appropriations for 2011, Part 3, February 2010, 111-2 Hearings by :
Download or read book Energy and Water Development Appropriations for 2011, Part 3, February 2010, 111-2 Hearings written by and published by . This book was released on 2010 with total page 1284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Future Of Our Physics Including New Frontiers, The: Proceedings Of The 53rd Course Of The International School Of Subnuclear Physics by : Antonino Zichichi
Download or read book Future Of Our Physics Including New Frontiers, The: Proceedings Of The 53rd Course Of The International School Of Subnuclear Physics written by Antonino Zichichi and published by World Scientific. This book was released on 2017-02-13 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main focus of this year's Proceedings of the 53rd Course of the International School of Subnuclear Physics is the future of physics, including the new frontiers in other fields.
Book Synopsis New Results And Actual Problems In Particle & Astroparticle Physics And Cosmology - Proceedings Of Xxixth International Workshop On High Energy Physics by : Roman Anatolievich Ryutin
Download or read book New Results And Actual Problems In Particle & Astroparticle Physics And Cosmology - Proceedings Of Xxixth International Workshop On High Energy Physics written by Roman Anatolievich Ryutin and published by World Scientific. This book was released on 2014-03-26 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique volume contains the materials of the XXIXth International Workshop on High Energy Physics. The content of the volume is much wider than just high-energy physics and actually concerns all the most fundamental areas of modern physics research: high-energy physics proper, gravitation and cosmology. Presentations embrace both theory and experiment.
Book Synopsis The CBM Physics Book by : Bengt Friman
Download or read book The CBM Physics Book written by Bengt Friman and published by Springer. This book was released on 2011-03-03 with total page 973 pages. Available in PDF, EPUB and Kindle. Book excerpt: This exhaustive survey is the result of a four year effort by many leading researchers in the field to produce both a readable introduction and a yardstick for the many upcoming experiments using heavy ion collisions to examine the properties of nuclear matter. The books falls naturally into five large parts, first examining the bulk properties of strongly interacting matter, including its equation of state and phase structure. Part II discusses elementary hadronic excitations of nuclear matter, Part III addresses the concepts and models regarding the space-time dynamics of nuclear collision experiments, Part IV collects the observables from past and current high-energy heavy-ion facilities in the context of the theoretical predictions specific to compressed baryonic matter. Part V finally gives a brief description of the experimental concepts. The book explicitly addresses everyone working or planning to enter the field of high-energy nuclear physics.
Author :United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development Publisher : ISBN 13 : Total Pages :956 pages Book Rating :4.F/5 ( download)
Book Synopsis Energy and Water Development Appropriations for 2015: Department of Energy: Secretary of Energy by : United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development
Download or read book Energy and Water Development Appropriations for 2015: Department of Energy: Secretary of Energy written by United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development and published by . This book was released on 2014 with total page 956 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development Publisher : ISBN 13 : Total Pages :892 pages Book Rating :4.F/5 ( download)
Book Synopsis Energy and Water Development Appropriations for 2014 by : United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development
Download or read book Energy and Water Development Appropriations for 2014 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development and published by . This book was released on 2013 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Deep Inelastic Scattering by : Masahiro Kuze
Download or read book Deep Inelastic Scattering written by Masahiro Kuze and published by World Scientific. This book was released on 2007 with total page 996 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings present the most up-to-date status of deep inelastic scattering (DIS) physics. Topics such as structure function measurements and phenomenology, quantum chromodynamics (QCD) studies in DIS and photoproduction, spin physics and diffractive interactions are reviewed in detail, with emphasis on those studies that push the test of QCD and the Standard Model to the limits of their present range of validity, towards both the very high and the very low four-momentum transfers in lepton-proton scattering.
Author :United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development Publisher : ISBN 13 : Total Pages :1284 pages Book Rating :4.3/5 (121 download)
Book Synopsis Energy and Water Development Appropriations for 2011: Dept. of Energy fiscal year 2011 justifications (cont.) by : United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development
Download or read book Energy and Water Development Appropriations for 2011: Dept. of Energy fiscal year 2011 justifications (cont.) written by United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development and published by . This book was released on 2010 with total page 1284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The XVIII International Conference on Strangeness in Quark Matter (SQM 2019) by : Domenico Elia
Download or read book The XVIII International Conference on Strangeness in Quark Matter (SQM 2019) written by Domenico Elia and published by Springer Nature. This book was released on 2020-10-03 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on new experimental and theoretical advances concerning the role of strange and heavy-flavour quarks in high-energy heavy-ion collisions and in astrophysical phenomena. The topics covered include • Strangeness and heavy-quark production in nuclear collisions and hadronic interactions, • Hadron resonances in the strongly-coupled partonic and hadronic medium, • Bulk matter phenomena associated with strange and heavy quarks, • QCD phase structure, • Collectivity in small systems, • Strangeness in astrophysics,• Open questions and new developments.
Download or read book High Energy Physics written by and published by World Scientific. This book was released on 1981 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:
