Prof.
Alexandros Gezerlis
(University of Guelph)
5/18/15, 9:15 AM
In this talk I will introduce the big picture of modern low-energy nuclear theory. Specifically, I will first go over the efforts toward connecting nucleon-nucleon and three-nucleon interactions with the fundamental theory of Quantum Chromodynamics, in the context of what is known as chiral Effective Field Theory (EFT). I will then discuss first-principles studies of the many-nucleon problem...
Mr
Daniel Bazin
(NSCL/MSU)
5/18/15, 9:50 AM
In this talk I will review different types of Active Target detectors and their application to various experimental situations. Although Active Target detectors have clear advantages from the points of view of luminosity and angular coverage, their optimization to particular experimental goals often require different configurations. Several of the parameters that can be considered will be...
Tan Ahn
(University of Notre Dame)
5/18/15, 11:30 AM
Resonance studies are of great importance in the study of nuclear structure and the production of elements in astrophysical scenarios. Active-target detectors are well suited to study resonances with radioactive beams due to their tracking ability and the large of amount of target material they provide. An overview of using active-target detectors to perform resonance studies will be presented...
Dr
Brian Roeder
(Cyclotron Institute, Texas A&M University)
5/18/15, 12:05 PM
During the commissioning of the prototype AstroBox1 detector at TAMU [1], it was noticed that a gas detector with Micro Pattern Gas Amplifiers (MPGAD) [2] had two applications. First, such a detector was useful for detecting low-energy protons ( < 1 MeV) from beta-delayed proton decay because the energy deposit of the beta-particles in the gas was small and the signal from the proton energy...
Dr
Aurelien Blanc
(ILL Grenoble)
5/18/15, 2:00 PM
The FIPPS (Fission Product Prompt gamma-ray Spectrometer) project was presented during the Vision 2020 conference in Grenoble in 2010 and is now part of the ILL ENDURANCE program. It addresses two fundamental domains of nuclear physics: fission of heavy elements and structure of neutron rich matter. Neutron capture induced reactions provide a valuable way to investigate these domains. The...
Jeremy Bundgaard
(Colorado School of Mines & the NIFFTE collaboration)
5/18/15, 2:25 PM
Nuclear physics and engineering communities call for new, high precision measurements to improve existing models for understanding fission and designing next generation reactors. The Neutron Induced Fission Fragment Tracking experiment (NIFFTE) has developed the fission Time Projection Chamber (fissionTPC) to measure neutron induced fission cross-sections with unrivaled precision. The...
Verena Kleinrath
(Los Alamos National Laboratory, P-27)
5/18/15, 2:50 PM
Oral Presentation
Nuclear data play a vital role in nuclear energy and defense applications. The community heavily relies on simulations and modelling, and therefore on available data and their uncertainties. The Neutron Induced Fission Fragment Tracking Experiment (NIFFTE) collaboration employs a fission Time Projection Chamber (fissionTPC) to measure fundamental nuclear data with unprecedented precision. The...
Prof.
Zbigniew Chajecki
(Western Michigan University)
5/18/15, 3:15 PM
Many experiments with fast energetic beams require an open geometry allowing, in some cases, the identification of heavy residues downstream in a magnetic spectrometer or detection of particles in ancillary detectors. An optimized and portable Active Target detector is essential to accommodate a broad experimental program and the coupling to a wide range of equipment the science requires. We...
Prof.
Peter Egelhof
(GSI Darmstadt)
5/18/15, 3:40 PM
The investigation of light-ion induced reactions using radioactive beams in inverse kinematics gives access to a wide field of nuclear structure studies in the region far off stability. The experimental concept of active targets was already proven to be a usefull tool for such investigations, in particular in the region of low momentum transfer.
The world wide first experiments with...
Dr
Marine Vandebrouck
(GANIL)
5/18/15, 4:50 PM
The study of the Isoscalar Giant Monopole Resonance (ISGMR) in stable nuclei provided relevant information on both nuclear matter and nuclear structure in past decades. For instance the ISGMR centroid can be linked to the incompressibility modulus of the infinite nuclear matter. Values for exotic nuclei would help in constraining it. In unstable nuclei, only one measurement has been performed...
Dr
David Perez Loureiro
(NSCL/MSU)
5/18/15, 5:15 PM
Classical novae and type I x-ray bursts are explosive events that occur in close binary systems where hydrogen-rich material is accreted on the surface of a compact object.
This accreted material is heated and compressed until a thermonuclear runaway occurs. During this explosion heavier nuclei are produced via proton captures and beta decays.
In many proton capture reactions, resonant...
Dr
Mikolaj Cwiok
(University of Warsaw)
5/18/15, 5:40 PM
The Extreme Light Infrastructure-Nuclear Physics (ELI-NP) – currently being built near Bucharest, Romania – will deliver monochromatic, brilliant and polarized gamma-ray beams (tunable energy from 1 to 20 MeV). We propose to use a gaseous active target detector to study (&alpha,&gamma) and (p,&gamma) nuclear reactions of current astrophysical interest by means of studying time-inverse...
Prof.
Moshe Gai
(University of Connecticut and Yale)
5/18/15, 6:05 PM
An Optical Readout TPC (O-TPC) [1] has been used over the last four years for studies in Nuclear Astrophysics (and Nuclear Structure) with gamma-beams extracted from the HIγS facility at TUNL, Duke University [2]. The O-TPC operates with the gas mixture of CO2(80%) + N2(20%) at 100 torr [1], as well as with N2O(80%) + N2(20%) gas. Both carbon and oxygen contained in the CO2 gas were used as...
Prof.
Zenon Janas
(Faculty of Physics, Uniwesity of Warsaw)
5/18/15, 6:30 PM
The development of an Optical Time Projection Chamber (OTPC) at the University of Warsaw about a decade ago opened the possibility to investigate a broad range of rare decay modes with very high sensitivity. The detection of one decay event is sufficient to unambiguously identify the decay mode and establish its branching ratio.
The detector is a TPC with amplification stage formed by a...
Prof.
Alan Wuosmaa
(University of Connecticut)
5/19/15, 9:00 AM
Much of what has been learned about the structure of atomic nuclei over the past several decades has been determined from studies of transfer reactions. Typically, these are reactions where one or two nucleons are exchanged between a beam and a target. The data can provide information such as the excitation energies and quantum numbers for nuclear states, as well as other more subtle...
Dr
Shinsuke OTA
(Center for Nuclear Study, the University of Tokyo)
5/19/15, 9:35 AM
Active target is a key device expanding the studies with nuclear scattering experiment, owing to its high detection efficiency, high luminosity and detection capability of the low energy recoil. In Japan, several active targets have been developed for the studies with wide-energy-range unstable nuclei beam available in RIBF and RCNP and for the studies with gamma source in NewSUBARU...
Dr
Adam Fritsch
(College of Wooster)
5/19/15, 10:10 AM
The clustering of alpha particles in atomic nuclei results in the self-organization of various geometrical arrangements at the femtometer scale. The one-dimensional alignment of multiple alpha particles is known as linear-chain structure, evidence of which has been highly elusive since its proposal in the 1950s. We show via resonant alpha scattering of a radioactive 10Be beam that excited...
Dr
Marco Cortesi
(National Superconducting Cyclotron Laboratory (Michigan State University))
5/19/15, 10:55 AM
Gaseous detectors are fundamental components at the frontier of present and planned physics experiments. Over the past decade Micro-Pattern Gas Detector (MPGD) technologies have become increasingly important; the high radiation resistance, large sensitive area, high rate capability and excellent spatial and time resolution make them an invaluable tool to confront future detector challenges at...
Prof.
Thomas Aumann
(TU Darmstadt)
5/19/15, 11:30 AM
Large efforts have been undertaken in the past years in order to develop the experimental tools for an investigation of giant resonances in unstable nuclei. Data are still scarce, but promising results have emerged, in particular concerning the dipole and monopole giant resonances. The interest in studying the multipole response of exotic nuclei is on one hand the nuclear structure aspect...
Mr
Tatsuya Furuno
(Department of Physics, Kyoto University)
5/19/15, 12:05 PM
An active target system MAIKo (Mu-PIC based Active target for Inverse Kinematics.) is under development at RCNP. This system is designed to perform missing mass spectroscopy with RI beam. Missing mass spectroscopy will be a powerful method to study high-excited states of unstable nuclei above particle decay thresholds. MAIKo is based on a time projection chamber (TPC). We utilize micro-pixel...
motoki murata
(Department of physics kyoto university)
5/19/15, 12:30 PM
The photodisintegration of 4He have been extensively studied both from the experimental and theoretical aspects. The photodisintegration is mainly caused by an electric-dipole transition to the giant dipole resonance and the subsequent decay. This process is deeply related to the nucleosynthesis in the universe, therefore, it is very important from a view of astrophysics as well as nuclear...
Dr
Hiroyuki Sako
(Japan Atomic Energy Agency)
5/19/15, 2:00 PM
We are developing a Hyperon Time Projection Chamber (HypTPC) as the main detector of two experiments at the J-PARC Hadron Facility.
The J-PARC E42 experiment proposes to search for the H-dibaryon resonance in $\Lambda\Lambda$ production from $(K^{-},K{+})$ reactions off nuclei and the bound H-dibayron by its weak decays in order to answer the long-standing question about the existence of the...
Dr
Mizuki Kurata-Nishimura
(RIKEN)
5/19/15, 2:50 PM
The SAMURAI Pion-Reconstruction and Ion-Tracker (SπRIT) has recently been constructed at Michigan State University as part of an international effort to constrain the symmetry-energy term in the nuclear Equation of State (EoS). The SπRIT-TPC is designed for measurements of the density dependence of the symmetry-energy term at around twice the saturation density. This study will be performed in...
Yassid Ayyad
(Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka, 567-0047, Japan and NSCL, Michigan State University, East Lansing, Michigan, 48824, USA)
5/19/15, 3:15 PM
The SAMURAI-SπRIT project will aim to constrain the symmetry-energy term of the nuclear Equation of State (EoS) at supra-saturation densities [1]. For such purpose, a Time Projection Chamber (TPC) was recently constructed in order to measure π−/π+ and t/3He yield ratios in central collisions of neutron-rich heavy ions. The TPC will be installed inside the SAMURAI superconducting dipole magnet...
Ms
Alexandra Spiridon
(Cyclotron Institute-Texas A&M University)
5/19/15, 3:40 PM
MicroMegas is a relatively new detector technology that operates as a two stage parallel plate avalanche chamber. It consists of a small amplification gap (50-300 um) and a much larger drift gap (on the order of cm) separated by a thin electroformed micromesh. It has been shown to provide gains of up to 10^5. [1]
We have previously used this technology at our Institute in the AstroBox [2], a...
Prof.
Nasser Kalantar
(KVI-CART/Univ. of Groningen)
5/19/15, 4:25 PM
Several nuclear reactions are best investigated when the momentum transfer to the nucleus is small. Among these are the IsoScalar Giant Monopole Resonance (ISGMR) which helps determine one of the parameters of the equation of state, namely the incompressibility of nuclear matter, and proton elastic scattering from nuclei which is sensitive to parameters of nuclear density such as the matter...
Ms
Clementine Santamaria
(CEA Saclay)
5/19/15, 4:50 PM
MINOS is a new device composed of a thick liquid hydrogen target and a Time Projection Chamber (TPC), dedicated to the in-beam spectroscopy of very exotic nuclei in inverse kinematics by proton-induced knockout reactions at the Radioactive Isotope Beam Factory (RIBF) in Japan. This TPC enables the detection of the charged particles produced by knockout reactions and the reconstruction of the...
Dr
Jacobus Swartz
(KU Leuven)
5/19/15, 5:15 PM
The ACTAR TPC active target project, which is based at GANIL and supported by an ERC grant, is being developed to investigate exotic nuclei at various laboratories in Europe. A rich research program including direct and resonant reactions, as well as decays, will be addressed with this new instrument.
In many cases, it is highly desirable to collect gamma-ray information concurrently to the...
Mr
suwat tangwancharoen
(National Superconducting Cyclotron Laboratory)
5/19/15, 5:40 PM
The SAMURAI Pion-Reconstruction and Ion-Tracker (SπRIT), a Time Projection Chamber (TPC) is part of an international effort to constrain the nuclear symmetry energy around twice the saturation density [1]. The field cage of the SπRIT TPC is designed to measure the momentum distribution of pions and isotopically resolved light particles emitted in heavy ion collisions. The field cage consists...
Dr
Ethan Uberseder
(Texas A&M University)
5/19/15, 6:05 PM
With the upgrade to the facilities nearing completion, the Cyclotron Institute at Texas A&M University is poised to provide a range of new high quality re-accelerated radioactive ion beams to compliment the existing rare isotope beam capabilities based on the in-flight separator MARS. To take full advantage of the opportunities available for low-energy nuclear structure and astrophysics, a...
Prof.
Jordi Jose
(UPC Barcelona)
5/20/15, 9:00 AM
Nuclear astrophysics aims to understand the cosmic origin of the chemical elements and the energy generation in stars. It constitutes a truly multidisciplinary arena that involves researchers in theoretical astrophysics, observational astronomy, cosmochemistry and nuclear physics.
New tools, developments and achievements have revolutionized our understanding of the origin of the elements:...
Mr
Riccardo Raabe
(KU Leuven - Instituut voor Kern- en Stralingsfysica)
5/20/15, 9:35 AM
Active targets are very versatile instruments. On some aspects, like the luminosity of a reaction measurement, they have a clear advantage over more traditional setups. In other areas, sometimes a compromise has to be chosen in order to obtain usable information on various parameters such as energy, channel and particle identification.
The use of auxiliary detectors and techniques can help...
Dr
Ivan Mukha
(Helmholzzentrum GSI)
5/20/15, 10:10 AM
The isotopes within the limiting lines of bound nuclei (or drip-lines) are goals of exploration for as many elements as possible. However the drip-line is not the end of the nuclear existence, and nuclei beyond the proton and neutron drip-lines may live much longer than the characteristic time of an orbital motion of nucleons in nuclei. These nuclei called resonances have lifetimes determined...
Mr
Pilsoo LEE
(Dept. of Physics, Chung-Ang University)
5/20/15, 11:00 AM
An active target, which acts as both a reaction target and a detector, is one of the promising particle detection systems in nuclear physics experiment. It provides comprehensive physical information such as traces of injected particles and particle discrimination in atomic numbers based on energy-loss information. Our active target is basically a gas-filled time projection chamber developed...
Mr
Jonathan Barney
(NSCL)
5/20/15, 11:25 AM
The SAMURAI Pion‐Reconstruction and Ion‐Tracker (SpiRIT), a Time Projection Chamber (TPC), is designed for measurements of the density dependence of the nuclear symmetry energy around twice the saturation density. This TPC will be used inside the large SAMURAI dipole magnet in the Rare Isotope Beam Facility (RIBF) in RIKEN Wako, Japan. To understand the relative locations of the TPC drift...
Mr
Joshua Bradt
(NSCL/MSU)
5/20/15, 12:15 PM
The Active-Target Time Projection Chamber (AT-TPC) was recently commissioned at MSU using a stable beam of 4He at 3 MeV per nucleon from ReA3 on a target of He+CO2 gas. Tracks were measured in the detector at magnetic field strengths of 0, 0.5 and 1 Tesla. Analysis of the data is underway. This talk will focus on the application of the Kalman filter method to this highly nonlinear problem, and...