Detector Design and Data Analysis for Heavy Ion Collision Experiments

Slides:



Advertisements
Similar presentations
Hall A Experiments on Nuclear Few-Body Form Factors * The Few-Body Nuclear Systems The deuterium nucleus is comprised of two nucleons: one proton and one.
Advertisements

Detector Design and Data Analysis for Heavy Ion Collision Experiments Peter, Chan Chak Fai SURE 2011 Supervisor: Prof Betty Tsang(NSCL, MSU)
Radiation Detectors / Particle Detectors
2/xx/07184 Lecture 221 PHY 184 Week 6 Spring 2007 Lecture 22 Title: The Lorentz Force = q v x B.
Forward-Backward Correlations in Relativistic Heavy Ion Collisions Aaron Swindell, Morehouse College REU 2006: Cyclotron Institute, Texas A&M University.
Neutron Number N Proton Number Z a sym =30-42 MeV for infinite NM Inclusion of surface terms in symmetry.
The National Superconducting Cyclotron Laboratory Michigan State University Betty Tsang 5th ANL/MSU/JINA/I NT FRIB Workshop on Bulk Nuclear Properties.
Preliminary results from a study of isospin non-equilibrium E. Martin, A. Keksis, A. Ruangma, D. Shetty, G. Souliotis, M. Veselsky, E. M. Winchester, and.
The National Superconducting Cyclotron State University Betty Tsang Constraining neutron star matter with laboratory experiments 2005.
For more information about the facility visit: For more information about our group visit:
Using GEMINI to study multiplicity distributions of Light Particles Adil Bahalim Davidson College Summer REU 2005 – TAMU Cyclotron Institute.
Identification of Upsilon Particles Using the Preshower Detector in STAR Jay Dunkelberger, University of Florida.
The Design of a Detector for the Electron Relativistic Heavy Ion Collider Anders Ingo Kirleis 1, William Foreman 1, Elke-Caroline Aschenauer 2, and Matthew.
Zbigniew Chajęcki National Superconducting Cyclotron Laboratory Michigan State University Probing reaction dynamics with two-particle correlations.
Constraining the EoS and Symmetry Energy from HI collisions Statement of the problem Demonstration: symmetric matter EOS Laboratory constraints on the.
Under the Direction of Dr. Tanja Horn 01 Conceptual Studies for the π 0 Hadronic Calorimeter project date 8/19/2011 Rob Macedo and Katya Gilbo Catholic.
St. Petersburg State University. Department of Physics. Division of Computational Physics. COMPUTER SIMULATION OF CURRENT PRODUCED BY PULSE OF HARD RADIATION.
Tools for Nuclear & Particle Physics Experimental Background.
The NSCL is funded in part by the National Science Foundation and Michigan State University. Determining the Impact Parameter and Cross-Section in Heavy.
Mass Spectroscopy 1 Mass Spectroscopy (Mass Spec) Applying Atomic Structure Knowledge to Chemical Analysis.
Charmonium feasibility study F. Guber, E. Karpechev, A.Kurepin, A. Maevskaia Institute for Nuclear Research RAS, Moscow CBM collaboration meeting 11 February.
Summary of EOS working group Z. Chajecki,B. Tsang Additional contributions from: Garg, Brown, Pagano Neutron stars HICs, Structure Neutron skin Tan Ahn.
Probing the density dependence of symmetry energy at subsaturation density with HICs Yingxun Zhang ( 张英逊 ) China Institute of Atomic Energy JINA/NSCL,
Probing the isospin dependence of nucleon effective mass with heavy-ion reactions Momentum dependence of mean field/ –Origins and expectations for the.
Pygmy Dipole Resonance in 64Fe
Simulations on “Energy plus Transmutation” setup, 1.5 GeV Mitja Majerle
Seeing the Subatomic Stephen Miller Saturday Morning Physics October 11, 2003.
MATTER 1.1ATOMS AND MOLECULES MATTER CONTENTS Define relative atomic mass and relative molecular mass based on the C-12 scale Analyze mass spectra in.
Neutron enrichment of the neck-originated intermediate mass fragments in predictions of the QMD model I. Skwira-Chalot, T. Cap, K. Siwek-Wilczyńska, J.
Probing the symmetry energy with isospin ratio from nucleons to fragments Yingxun Zhang( 张英逊 ) China Institute of Atomic Energy The 11 th International.
CEBAF The Continuous Electron Beam Accelerating Facility(CEBAF) is the central particle accelerator at JLab. CEBAF is capable of producing electron beams.
MINERvA Main INjector ExpeRiment for -A is the symbol for the neutrino. The beam that is sent to MINERvA is made out of neutrinos. In chemistry, an A stands.
Probing the symmetry energy of neutron-rich matter Betty Tsang, NSCL/MSU IWNDT in Honor of Prof. Joe Natowitz Texas A&M University, College Station, Texas,
22 September 2005 Haw05 1  (1405) photoproduction at SPring-8/LEPS H. Fujimura, Kyoto University Kyoto University, Japan K. Imai, M. Niiyama Research.
Design and performance of Active Target GEM-TPC R. Akimoto, S. Ota, S, Michimasa, T. Gunji, H. Yamaguchi, T. hashimoto, H. Tokieda, T. Tsuji, K. Kawase,
1 Experimental particle physics introduction. 2 What holds the world together?
Isovector reorientation of deuteron in the field of heavy target nuclei The 9th Japan-China Joint Nuclear Physics Symposium (JCNP 2015) Osaka, Japan, Nov.
Momentum Corrections for E5 Data Set R. Burrell, G.P. Gilfoyle University of Richmond, Physics Department CEBAF The Continuous Electron Beam Accelerating.
Tracking in a TPC D. Karlen / U. Victoria & TRIUMF for the LCTPC collaboration.
M. Garcia-Sciveres July 2002 ATLAS A Proton Collider Detector M. Garcia-Sciveres Lawrence Berkeley National Laboratory.
Radioactivity By the end of this chapter you should be able to: describe the properties of alpha, beta and gamma radiations; explain why some nuclei are.
Effective Nucleon Masses in Compressed and Expanding Neutron-Rich Matter: Motivation Multiple simulations suggest sensitivity of the n/p single and double.
H. Matis, S. Hedges, M. Placidi, A. Ratti, W. Turner [+several students] (LBNL) R. Miyamoto (now at ESSS) H. Matis - LARP CM18 - May 8, Fluka Modeling.
Constraints on symmetry energy and n/p effective mass splitting with HICs Yingxun Zhang ( 张英逊 ) 合作者: Zhuxia Li (李祝霞) China Institute of Atomic Energy,
Tetsuya MURAKAMI For SAMURAI-TPC Collaboration Physics Using SAMURAI TPC.
Unstable Nuclei and Radioactive Decay. Radioactivity (Radioactive decay) The process by which some substances spontaneously emit radiation. Radioactive.
Current status and future direction on symmetry energy determination using Heavy Ion Collisions How does this subfield intersect with other subfields?
Design and performance of Active Target GEM-TPC R. Akimoto, S. Ota, S, Michimasa, T. Gunji, H. Yamaguchi, T. Hashimoto, H. Tokieda, T. Tsuji, S. Kawase,
Electric Dipole Response, Neutron Skin, and Symmetry Energy
Elettra Sincrotrone Trieste
L-35 Atomic and Nuclear Physics-3
University of Liverpool, Liverpool, UK, July 7-9, 2014
A novel trap for electron scattering off short-lived exotic nuclei
Giant Monopole Resonance
Event Reconstruction and Data Analysis in R3BRoot Framework
Content Heavy ion reactions started fragmenting nuclei in the 1980’s. Its study taught us that nuclear matter has liquid and gaseous phases, phase.
4.3 NOTES Nuclear Radiation
Status of 20 GeV Au+Au Analysis
Isotopes.
Cyclotron Institute, Texas A&M University
Mass Spectroscopy (MS) Applications as Residual Gas Analyzer (RGA)
Reaction Dynamics in Near-Fermi-Energy Heavy Ion Collisions
Momentum Corrections for E5 Data Set
MINOS: a new vertex tracker for in-flight γ-ray spectroscopy
CLAS Simulations for the E5 Data Set
Residual Gas Analyzer (RGA)
Progress report on PIC simulations of a neutralized electron beam
Muonic Atoms I’d like to talk to you about muonic atoms.
Zbigniew Chajęcki Western Michigan University
Presentation transcript:

Detector Design and Data Analysis for Heavy Ion Collision Experiments Peter, Chan Chak Fai SURE 2011 Supervisor: Prof Betty Tsang(NSCL, MSU)

National Superconducting Cyclotron Laboratory (NSCL) Michigan State University (MSU)

With Prof Betty Tsang and HiRA group

Background Symmetry Energy Project (SEP) is one of the current projects at NSCL. Its physics goals include the determination the equation of state of nuclear matter, density dependence of symmetry energy, etc. Heavy ion collisions (Ca, Sn, etc.) are studied experimentally and with computer simulations. The project is an international collaboration.

Equation of State Energy in nuclei: Symmetry Energy Term Image from http://www.nscl.msu.edu/~tsang/iso_Texas_11.pdf

Detector Design Image from http://www-rnc.lbl.gov/EOS/ A Time Projection Chamber (TPC) is designed to detect pions and charged particles emitted in heavy ion collisions. The charged particles produced in heavy ions collision will ionize the gas in the chamber. The ionized gas is drifted towards the pad plane by electric and magnetic field. The drift time and the position of the ionized gas can be used to generate the tracks of primary charged particles. It is designed and made in US and will be installed in RIKEN, Japan. Image from http://www-rnc.lbl.gov/EOS/

Overall Design

Overall Design Lid and electronics Field cage Enclosure Voltage step down

Contributions in TPC design Use of Computer-Aided Design (CAD) software Design modification Model construction Rotation structure design Stress calculations

CAD Software used Autodesk Inventor, a Computer-Aided Design (CAD) software is used for the 3D design of TPC.

Design Modification Examples of my contributions: Changed the color of the cooling rod. Added the copper strips on the corners of the field cage. Modified the position of the standoff in voltage step down. Modified the dimension of the enclosure.

Foam Model Making MSU RIKEN The foam model of TPC is made and shipped to Japan to ensure it can be placed inside the magnet. Made together with Jon Barney and Justin Estee. MSU RIKEN

Not all the ribs are made.

In addition, the TPC should be able to move down the hallways and doors in NSCL.

The foam model in Japan (photos from RIKEN)

Rotation Structure Design The TPC will be assembled upside down since there are wires to be attached to the bottom of top plate. It has to stand on its side to move down the hallways at NSCL. One idea is to rotate the TPC around its center of mass:

Stress analysis The frame structure should be able to support the TPC(~520kg). The condition of the TPC on its side sitting on a cart is simulated by inventor. Less than 2mm deformation is observed. Simulation to rotate the TPC to different orientation is still in progress.

Analysis of Computer Simulated Collision Data Simulations are done by Hang Liu using the supercomputer in Austin, Texas Improved Quantum Molecular Dynamics Model (ImQMD) is currently used, the results would be compared to transport theory(BUU) and real collision.s More than 60000 collision events are generated for each reaction. The collision under different initial conditions at different energies and impact parameters are simulated: Examples: - Sn124+Sn124 (sn124s) - Sn124+Sn112 (sn112m) - Sn112+Sn124 (sn124m) - Sn112+Sn112 (sn112s) Visualization of collisions in computer simulation Photo from Y.X. Zhang www.imqmd.com/income/zhang1.pdf

Contributions in Data Analysis Computation knowledge of Fortran was used Some observables were analyzed Neutron-to-proton (n/p) ratio Tritium-to-helium3 (t/3He) ratio Ri value

n/p ratio Example: E70b7x0.7 - beam energy = 70MeV/A - impact parameter = 7fm - stiffness of equation of state of nuclear matter (gamma) = 0.7

After colliding, fragments with lower energy have a higher neutron content, while that with higher energy have a higher proton content. The graphs of n/p ratio for other reactions and graphs of double ratio were also plotted.

t/3He ratio t/3He ratio is interesting because neutron is hard to detect in experiment and hence the error in experimental value of n/p ratio is high. More tritium(t) are produced in lower energy while more 3He are produced in higher energy in general.

The error in this result is larger than that of n/p ratio. The count number at high energy is small, which produces a relatively high statistical error. More events will be simulated to reduce the error.

Ri value Ri is the isospin transport ratio, which is a measure of isospin diffusion. XAA refers to the neutron-rich system (sn124+sn124), XBB refers to the proton-rich system (sn112+sn112). If no diffusion, Ri(XAA) = 1; Ri(XBB) = -1. If isospin equilibrium is reached, Ri(XAB) = Ri(XBA) = 0. In theory, X is the asymmetry of the fragments. Two types of Ri: Ri(n,frag) and Ri(zmax>20)

In general, the isospin diffuse more at lower beam energy and lower gamma. Current plan is to compare Ri at more beam energies. Graphs for comparing different incident energies at fixed impact parameters were made. The next step is to compare for different impact parameters.

Acknowledgement Thanks to Betty Tsang, Bill Lynch, Fei Lu, Rebecca Shane, Jon Barney and Justin Estee for all their help! Thanks to Department of Physics, CUHK for the opportunity of SURE!