Prof.
Fritz Bosch
(GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany)
10/10/11, 9:00 AM
Nuclear Physics
Fritz Bosch, GSI Helmholtzzentrum , D-64291 Darmstadt, Germany
Abstract
This talk presents a survey of experiments conducted in the last years at the ion-storage ring ESR of GSI, addressing nuclear physics, nuclear astrophysics and closely related fields. The ESR is a powerful and in many respects unique tool. Connected with a synchrotron and a fragment separator, it provides...
Dr
Meng Wang
10/10/11, 9:35 AM
The nuclear physics program of the Lanzhou storage ring will be illustrated
Dr
Baohua Sun
(GSI Helmholtzzentrum für Schwerionenforschung GmbH)
10/10/11, 10:10 AM
Baohua Sun for the FRS-ESR mass collaboration
Heavy ion storage rings operated in an isochronous mode and/or equipped with the
phase-shape cooling devices can be used for high-precision, high-sensitivity and
high-efficiency mass measurements of stored nuclei. This has been achieved at GSI
Darmstadt, where two complementary methods, Schottky Mass Spectrometry (SMS) and
Isochronous Mass...
Mr
Matthew Reed
(University of Surrey)
10/10/11, 10:35 AM
An experiment was undertaken to study stored and cooled 197Au projectile-fragmentation products in March 2009. First results from this have recently been published [1]. Using the SIS-FRS-ESR setup at GSI it was possible to observe metastable nuclear excitations (isomers) with energies up to 3 MeV, and half-lives extending to minutes or longer. This talk presents briefly the published results...
Ms
Ganna Rastrepina
(GSI Helmholtzzentrum für Schwerionenforschung GmbH)
10/10/11, 11:30 AM
Storage rings offer the possibility of measuring proton- and alpha-induced reactions in inverse kinematics. The combination of his approach with a radioactive beam facility allows, in principle, the determination of the respective cross sections for radioactive isotopes. Such data are highly desired for a better understanding of astrophysical nucleosynthesis processes like the p process.
...
Frank Herfurth
(GSI)
10/10/11, 11:55 AM
Plenary Contribution
At the GSI accelerator complex, using the universal linear accelerator UNILAC and the synchrotron SIS, highly-charged ions up to U92+ are produced by passing a 400 MeV/u beam through a gold foil stripping off all or nearly all electrons. The HITRAP facility is built to decelerate those ions to almost rest and to provide them to the experiments.
In a number of commissioning beam times, the...
Prof.
Nasser Kalantar-Nayestanaki
(KVI, University of Groningen)
10/10/11, 12:20 PM
Nasser Kalantar-Nayestanaki, for the EXL collaboration
KVI, University of Groningen, Groningen, The Netherlands
The upcoming FAIR facility in Darmstadt, Germany, will produce intense high energy beams of exotic nuclei, electrons and anti-protons, which will be used to explore the properties of new regions of the chart of nuclides of key importance for both nuclear structure and nuclear...
Dr
Andro Kacharava
(Institute for Nuclear Physics (IKP) FZ-Juelich)
10/10/11, 2:30 PM
The COoler SYnchrotron COSY at the Forschungzentrum Juelich accelerates
protons and deuterons with momenta up to 3.7 GeV/c. COSY is the machine
for hadron spin physics on a world-wide scale. In combination with internal
polarized Hydrogen and Deuterium targets, the availability of electron and
stochastically cooled polarized proton and deuteron beams allows for precision
measurements....
Dr
Simona Giovannella
(LNF)
10/10/11, 3:05 PM
The KLOE experiment has collected 2.5 fb-1 at the peak of the phi resonance at the e+e- collider DAPHNE in Frascati. The whole data set includes 100 million eta's produced through the radiative decay phi --> eta gamma and tagged by means of the monochromatic recoil photon. Measurements of eta decay channels, such as pi+ pi- gamma, are in progress. We have also measured the branching ratio of...
Dr
David Chiladze
(High Energy Physics Institute, Tbilisi State University)
10/10/11, 3:40 PM
Very little is known experimentally on proton-proton elastic scattering in the energy range from 1.6 to 2.8 GeV for centre-of-mass angles between about 10 and 30 degrees. The differential cross section data that do exist seem to fall systematically below the predictions of the SAID data analysis program. Measurements in this kinematical region are possible at the ANKE spectrometer, which is...
Mr
David Mchedlishvili
(High Energy Physics Institute of Tbilisi State University)
10/10/11, 4:35 PM
Deuteron charge exchange break-up dp->{pp}n, where the final {pp} diproton system is at very low excitation energy and hence in the 1S_0 state, is a powerful tool to probe the spin-flip terms in the proton-neutron charge-exchange reaction. Recent measurements with the ANKE spectrometer at the COSY storage ring at 1.6, 1.8, and 2.3 GeV have extended this study into the pion-production regime in...
Dr
Sergey Dymov
(FZ-Juelich)
10/10/11, 5:00 PM
An experimental program to study near threshold pion production in the
reactions pp->{pp}_s \pi^0 and pn->{pp}_s \pi^-, is undertaken at
ANKE-COSY. The selection of the final proton pair {pp}_s in the 1S0 state,
realized by cutting on the pair excitation energy E_{pp}<3 MeV, simplifies
the theoretical analysis of the processes. The combined study of these
reactions is motivated by the...
Dr
Michael Cargnelli
(Austrian Academy of Sciences - Stefan Meyer Instiute)
10/10/11, 5:25 PM
The Kbar-N system at rest makes a sensitive testing ground for the understanding of strong interaction at low energies. At the DAFNE electron-positron collider of Laboratori Nazionali di Frascati we study X-ray transitions of kaonic atoms, taking advantage of the low-energy kaons produced by Phi-mesons decaying nearly at rest. In the SIDDHARTA (Silicon Drift Detector for Hadronic Atom...
Mr
Carl-Oscar Gullstroem
(Uppsala University)
10/10/11, 5:50 PM
The decay of the π 0 meson into an electron–positron pair is heavily sup-
pressed in the Standard Model (SM) with an expected branching ratio of
6 × 108 . The decay is therefore sensitive to contributions from physics be-
yond the SM. Recently, the KTeV collaboration at Fermilab has performed
a precise measurement of the π 0 → e+ e− decay branching ratio using a data
sample of 800 events....
Prof.
Thomas Stoehlker
(GSI)
10/11/11, 9:00 AM
Thomas Stoehlker (1,2,3) and Reinhold Schuch (4)
1 GSI-Darmstadt, Planckstr.1, 64291 Darmstadt, Germany
2 Physikalisches Institut, University of Heidelberg, 69120 Heidelberg, Germany
3 Helmholtz Institute Jena, 07743 Jena, Germany
3 Atomic Physics, Fysikum, AlbaNova University Centre, S-10691 Stockholm, Sweden
An overview about the envisioned program of the research collaboration...
Dr
Dieter Oellers for the PAX Collaboration
(INFN Ferrara)
10/11/11, 9:00 AM
A stored polarized antiproton beam opens a wide area of new
physical investigations. Even though there were several topical
conferences since the 1980s, no method to provide
a stored polarized antiproton beam could be established up to now.
The PAX-Collaboration is investigating the method of
spin filtering. A stored beam traverses
a polarized gas target and builds up polarization by...
Dr
Edward Stephenson
(Indiana University Center for Exploration of Energy and Matter)
10/11/11, 9:25 AM
The Cooler Synchrotron (COSY) at Juelich offers an ideal environment for pursuing major feasibility questions associated with the possibility to search for electric dipole moments (EDM) on charged, polarized particles traveling in circulating beams. The first, whose analysis was completed in 2010, demonstrated that it is possible to correct for the geometric and rate systematic errors of a...
Dr
Fredrik Wenander
(CERN)
10/11/11, 9:35 AM
It has been proposed to use the Test Storage Ring (TSR) from MPI-K, Heidelberg, at the High Intensity Energy Isolde (HIE-ISOLDE) facility to perform experiments with stored exotic nuclides. With the integration of TSR at HIE-ISOLDE it would become the first storage ring at an isotope separator on-line (ISOL) facility. This, in combination with the capability of going to low beam energies (some...
Weber Günter
(Helmholtz-Institut Jena)
10/11/11, 9:50 AM
Studies of the polarization of hard x-rays emitted in energetic heavy-ion atom collisions provide detailed information of the collision dynamics as well as of the atomic structure at high-Z [1]. Moreover, hard x-ray polarimetry also opens a route for polarization diagnosis of spin-polarized ion and electron beams as are discussed for future PNC experiments [2,3]. However, due to the lack of...
Prof.
Yuri Shatunov
(Budker Institute of Nuclear Physics)
10/11/11, 10:10 AM
The first experiments to apply RF fields for resonant beam depolarization and spin flip at the VEPP-2M storage ring were
carried out more than 30 years ago.
Later this technique was used at VEPP-2M in the experiment for comparison of electron and positron anomalous magnetic moments.
Recently, interest in RF spin control has appeared at proton
machines. This paper describes a general...
Xiaolin Tu
(Institute of Modern Physics, Chinese Academy of Sciences)
10/11/11, 10:15 AM
X. L. Tu, Y. H. Zhang, H. S. Xu, Yu. A. Litvinov
and Cooperation Group of Mass Measurement at CSRe
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China
GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
Storage ring plays an important role in atomic mass measurement. One of operation modes, the isochronous mass spectrometry, has been successfully...
Ms
Greta Guidoboni
(University of Ferrara and INFN, 44100 Ferrara, Italy)
10/11/11, 10:35 AM
The search for an electric dipole moment (EDM) using a polarized, charged-particle beam in a storage ring requires ring conditions that can maintain a longitudinal, and stable, polarization for times up to 1000 s. The EDM signal is a rotation of this polarization into the vertical direction as a consequence of the radial electric fields present in both electric and magnetic storage rings. A...
Andrey Surzhykov
(University of Heidelberg)
10/11/11, 10:40 AM
A. Surzhykov (1,2), A. Artemyev (1,2), S. Fritzsche (2,3), and Th. Stoehlker (1,2,4)
(1) Physics Institute, University of Heidelberg, 69126 Heidelberg, Germany
(2) Atomic physics division, GSI Helmholtzzentrum fuer Schwerionenforschung, 64291 Darmstadt, Germany
(3) Department of Physics, FI-90014 University of Oulu, Finland
(4) Helmholtz-Institut Jena, 07743 Jena, Germany
In our...
Ms
Esperanza Köhler
(Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, Germany)
10/11/11, 11:30 AM
An internal cluster-jet target will be one of the two target
stations for the planned PANDA experiment at the antiproton accelerator
and storage ring HESR/FAIR.
Due to the significance of investigations of antiproton-nucleon interactions for PANDA,
hydrogen and deuterium are of largest interest as target material.
This type of target allows for a high and constant target
density at the...
Dr
Yury Valdau
(Forschungszentrum Jülich, Institut für Kernphysik)
10/11/11, 11:35 AM
Time-reversal symmetry is one of the most fundamental symmetries
in nature. CP-violation phenomena, which can be regarded as
equivalent to T-violation provided that CPT is conserved, have been
observed in the $K0$ and $B$ systems. Currently all observed CP
phenomena appear to be consistent with the standard model (SM)
predictions. However, it is well known that in the SM this...
Dr
Renate Maertin
(University of Heidelberg)
10/11/11, 11:55 AM
Renate Märtina,b, Roman Bardayc, Joachim Endersc, Yuliya Poltoratskac, Uwe Spillmannb, Andrey Surzhykova,b, Günter Weberd , Vladimir A. Yerokhina,b,e and Thomas Stöhlkera,b,d
a) Physikalisches Institut, University of Heidelberg, Philosophenweg 12, Heidelberg 69120, Germany
b) GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, Darmstadt 64291, Germany
c) Institut für...
Dr
Ke Yue
(GSI, Darmstadt, Germany)
10/11/11, 12:00 PM
Plenary Contribution
As part of the upcoming FAIR facility, the EXL (Exotic nuclei studied in Light-ion induced reactions at the NESR storage ring) project is proposed to capitalize on light-ion induced direct reactions in inverse kinematics by using storage ring techniques. This contribution presents the results of feasibility measurements performed at GSI, Darmstadt and Tübingen University for the EXL...
Mr
Alexander Täschner
(Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, Germany)
10/11/11, 12:20 PM
The prototype of the cluster-jet target station for PANDA has been built up at the University of Münster. This setup allows for systematic studies on the production of high density cluster-jet beams and their properties. One important parameter determining the performance of internal targets for storage ring experiments is the target thickness. In case of the cluster-jet targets the target...
Mr
Andrey Polyanskiy
(Institut für Kernphysik, Forschungszentrum Jülich)
10/11/11, 2:30 PM
The production of phi-mesons in collisions of 2.83 GeV protons
with C, Cu, Ag and Au nuclear targets has been measured with the ANKE
magnetic spectrometer at the Cooler Synchrotron COSY. The phi was
detected at small angles via its K+K- decay branch. The measured
target mass dependence of the production cross section can be related
to the in-medium phi width. Comparisons with three...
Dr
Marco Destefanis
(Universita' degli Studi di Torino and INFN)
10/11/11, 2:55 PM
The physics program of the future PANDA experiment includes the investigation of the non-perturbative region of the QCD by mean of antiproton beams, eventually polarised, with a beam momentum up to 15 GeV/c. Part of the PANDA spectrometer is devoted to the muon identification, that allow to access many among those processes needed to probe the nucleonic structure. The high foreseen luminosity...
Prof.
Victor Varentsov
(FAIR/ITEP)
10/11/11, 2:55 PM
The conventional nozzle vibration technique of the hydrogen micro-droplet generation that is supposed to be used for internal pellet target production for the future PANDA experiment at the international FAIR facility in Darmstadtfor is described. The operation of this technique has been investigated by means of
detailed computer simulations. Results of calculations for the geometry and...
Prof.
Vladimir Nedorezov for the GRAAL collaboration
(INR RAS Moscow Russia)
10/11/11, 3:20 PM
New precise experimental data on total photo-absorption cross sections are given for hydrogen, deuterium and carbon nuclei in the energy range from 0.75 to 1.5 GeV (see Figure). Measurement was performed with the back scattered tagged gamma beam (GRAAL facility at ESRF) and large acceptance detector LAGRANgE. The hadron contribution was obtained subtracting the background from the total...
Dr
Haik Simon
(GSI Helmholtzzentrum für Schwerionenforschung GmbH)
10/11/11, 3:20 PM
Haik Simon for the ELISe collaboration
At the New Experimental Storage Ring (NESR) at the FAIR facility an intersecting electron ion ring (eA collider, [1]) will allow scattering electrons with an energy of 125-500 MeV off exotic nuclei. The eA collider will enable for the first time to perform elastic, inelastic and quasielastic electron scattering off shortlived radioactive isotopes [2]....
Dr
Yuri Litvinov
(GSI Helmholtzzentrum für Schwerionenforschung)
10/11/11, 3:45 PM
Nuclear physics experiments in heavy-ion storage rings have proven a high potential over the last decades [1,2]. The ILIMA collaboration (Isomeric beams, LIfetimes and MAsses), based on experiences with the GSI Experimental Storage Ring (ESR) and IMP cooler-storage ring (CSRe) aims at accurate measurement of masses, lifetimes and decay modes of nuclear isomers and ground states at the new FAIR...
Mr
Wojciech Krzemien
(Jagiellonian University)
10/11/11, 3:45 PM
We conduct a search for the 4He-eta bound state with WASA-at-COSY facility, via a measurement
of the excitation functions for the dd -> 3-He p pi- reaction, where the outgoing p-pi pairs originate from the conversion of the eta meson on a nucleon inside the He nucleus. In June, 2008 first measurements of the excitation functions for the dd -> 3He p pi reaction were performed. In the...
Dr
Pia Thörngren Thörngren Engblom
(Università di Ferrara;Royal Institute of Technology, Stockholm)
10/11/11, 4:40 PM
The rich kinematical region in proton deuteron breakup reactions at low to intermediate energy offers a versatile laboratory for the chiral effective field theory, the modern theory of nuclear forces. Presently the spin structure of the three nucleon continuum exhibit disparate results when comparing experimental data to theoretical predictions based on two-nucleon potentials either with or...
Paolo Fonte
(LIP, Coimbra)
10/11/11, 4:40 PM
The introduction of timing Resistive Plate Chambers opened the way for very large area gaseous time-of-flight detectors. Such detectors have immediately found application in several Heavy Ion experiments and applications are being pursued in other fields, such as medical instrumentation. In this communication we will review the physical operating principles and the status of the technology.
Dr
Sergey Litvinov
(GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany)
10/11/11, 5:05 PM
The large acceptance Collector Ring (CR) together with the High Energy Storage Ring (HESR) is the storage ring which will be realized in the Modularized Start Version (MSV) of the FAIR project [1]. It will be operated in three ion-optical modes, two of them providing fast pre-cooling of either antiprotons or RIBs. The CR design was recently adapted to the use as a pre-cooling ring for...
Dr
Alessandra Filippi
(TO)
10/11/11, 5:05 PM
Data on two-nucleon K^- absorption in mesonless final states, $K^- + N + N\rightarrow Y N$, are very scarce and dated. Most of the existing
capture rates have been inferred indirectly from mononucleonic absorptions,
and only results for $^4$He, $^{12}$C, Ne and CF$_3$Br exist, obtained by
bubble chamber experiments [1]. The general understanding is that pionless
two-nucleon $K^-$...
Mr
Patrik Adlarson
(Uppsala Universitet)
10/11/11, 5:30 PM
Recently, a large statistics sample of approximately 3*10^7 decays of the eta meson have been collected with the WASA detector at COSY using the
pd ->3He reaction at beam kinetic energy 1 GeV. This data are being used to study the not so rare eta decays involving charged pions, like pi+ pi- pi0 . This decay proceeds mainly via a strong isospin violating contribution, where the decay width...
Prof.
Paolo Camerini
(Univ. Trieste & INFN Trieste)
10/11/11, 5:55 PM
The $K^-_{stop} A$ $\rightarrow$ $\Sigma^\pm\pi^\mp A'$ reaction is studied on light nuclei, $A=$
$^{6,7}Li$, $^9Be$, $^{13}C$ and $^{16}O$.
The outgoing $\Sigma$'s and $\pi$'s are detected using the FINUDA spectrometer, which
operated at the DA$\Phi$NE $e^+e^-$ facility (LNF). The $\Sigma^\pm$ hyperons are reconstructed via the
$n \pi^\pm$ decay with the neutrons detected by...
Mr
Anatoli Rouba
(Research Institute for Nuclear Problems)
10/11/11, 5:55 PM
Despite long-lasting study and seeming simplicity, the investigation of two- and three-particle interactions is still a topical problem. Because these investigations are very important, the experiments with antiproton, proton and deuteron interactions are included in scientific programs of modern accelerators COSY, GSI and LHC.
For study of these interactions, polarization observables...
Dr
Andreas Lehrach
(IKP, FZ Jülich)
10/12/11, 9:00 AM
Storage rings are used world-wide for various research topics and scientific applications. Next generation hadron storage rings are seeking for highest luminosity and precision. Advanced beam- and spin dynamics simulations are key tools to reach the required performance. In this presentation the performance of high-luminosity and resolution operation in the High-Energy Storage Ring HESR will...
Prof.
Pawel de Barbaro
(University of Rochester)
10/12/11, 9:35 AM
In my presentation, will summarize performance of two general purpose collider physics detectors: CDF at Fermilab and CMS at LHC.
In particular, i will concentrate on the calorimeter issues encountered during operation of CDF and CMS and discuss planned upgrades for CMS.
Dr
John Hauptman
(Iowa State University)
10/12/11, 10:10 AM
The character and capabilities of lepton storage ring detectors has naturally evolved. I will discuss the configurations of recent and current detectors at VEPP, the b-factories, LEP, and potential detectors at a Muon Collider or a linear electron collider, CLIC/ILC.
Prof.
You Jin Yuan
(Institute of Modern Physics, Chinese Academy of Sciences)
10/12/11, 11:15 AM
In this paper, present status of storage rings CSRm and CSRe at HIRFL in Institute of Modern Physics is introduced. During 3 years operation and upgrading, the performance of CSR is getting ready for high level physics experiments including nuclear physics related to high precision mass measurement, hardron cancer therapy and atomic physics research. In addition, further enhancements of the...
Yoshitaka YAMAGUCHI
(RIKEN Nishina Center)
10/12/11, 11:50 AM
We would like to present current status of Rare-RI Ring Project in RIKEN RI Beam Factory (RIBF). Rare-RI Ring consists of long injection line, septum magnets, fast-response kicker magnet and cyclotron-like storage ring. Main purpose of the Rare-RI Ring is to measure mass of unstable nuclei related to R-process, which are located very neutron rich side. Basic idea of the Rare-RI Ring and...
Gianfranco Morello
(LNF)
10/12/11, 12:15 PM
We report on the design and construction of a triple-GEM detector as a new Inner
Tracker (IT) for the KLOE-2 experiment at the Frascati Phi-factory. The IT is composed
of four tracking layers, each providing an independent 2-dimensional space point.
Each layer is a fully cylindrical triple-GEM detector.
The front-end electronics is based on the GASTONE ASIC, specifically developed for...
Dr
Branislav Streicher
(KVI, Groningen, The Netherlands)
10/12/11, 12:40 PM
The presented work focuses on the implementation of complex and highly granular detector arrays in the UHV environment of a storage ring. The concept to be presented here was borne out when designing the detection system for the upcoming project “EXotic nuclei studied in Light ion induced reactions (EXL)” at the New Experimental Storage Ring (NESR) as a part of the future FAIR facility. By...
Prof.
Colin Wilkin
(University College London)
10/13/11, 9:35 AM
\documentclass[12pt,a4paper]{article}
\pagestyle{empty}
\begin{document}
\begin{center}
\textbf{\large Strangeness production on the neutron}\\[3ex]
Colin Wilkin$^*$\\[2ex]
Physics and Astronomy Department, UCL, London WC1E 6BT, UK\\[2ex]
\end{center}
In order to fully understand strangeness production in
nucleon-nucleon collisions, it is crucial to obtain data with a
neutron...
Mrs
Izabela Balwierz
(Jagiellonian University)
10/13/11, 10:10 AM
Neutral kaons produced in correlated pairs at a phi-factory offer unique possibilities to perform fundamental tests of CPT invariance, as well as of the basic principles of quantum mechanics. The analysis of the
data collected by the KLOE experiment at DAFNE is still ongoing with the aim of improving previous results and limits on several parameters describing CPT violation and/or...
Dr
Christoph Florian Redmer
(Department of Physics and Astronomy, Uppsala University)
10/13/11, 10:35 AM
The WASA facility is a 4$\pi$ detector system, designed to study the hadronic production and the decays of light mesons. A high density pellet target combined with the high intensity beams of the Cooler Synchrotron COSY provide luminosities which allow studies of rare processes.
The WASA-at-COSY physics program focuses on the investigation of light meson decays with the aim of performing...
Dr
Giuseppe Mandaglio
(University of Messina)
10/13/11, 11:30 AM
The KLOE experiment at the $\phi$ factory DA$\Phi$NE in Frascati
(near Rome) is the first to have employed Initial State Radiation (ISR) to
precisely determine the $e^+e^-\to\pi^+\pi^-(\gamma)$ cross section below
1 GeV. Such a measurement is particularly important to test the Standard
Model calculation for the (g-2) of the muon, where a long standing
3$\sigma$ discrepancy is...
Dr
Andrzej Magiera
(Jagellonian University)
10/13/11, 11:55 AM
Investigations of charge symmetry breaking become one of the most important topics for the WASA detector at COSY. One of the planned studies concentrates on the charge symmetry forbidden dd ->alphapi^0 reaction. Experimental results will be compared with Chiral Perturbation Theory (ChiPT) predictions gaining information on the up and down quarks mass difference.
First steps toward a...
Mr
Paul Goslawski
(Institut für Kernphysik, Westfälische Wilhelms-Universtität Münster, D-48149 Münster, Germany)
10/13/11, 12:20 PM
Measurements on the mass of the eta-meson performed at different experimental facilities over the last decade have resulted in very precise results but differ by up to 0.5 MeV/c2. In order to clarify this situation a new high precision measurement of the dp --> 3He eta reaction was conducted at the COoler SYnchrotron - COSY - of the Forschungszentrum Juelich using the ANKE magnetic...
Dr
Alessandro Feliciello
(INFN Torino)
10/13/11, 2:30 PM
Traditionally hypernuclear physics experiments are fixed target ones and they are carried out at secondary beam of hadron accelerators.
However storage rings represent an interesting alternative approach.
In my contribution I will historically review few selected examples of hypernuclear studies performed at storage rings and I will illustrate the perspectives of some hypernuclear...
Dr
Diana Laura Sirghi
(LNF)
10/13/11, 3:05 PM
The SDDHARTA experiment (SIlicon Drift Detector for Hadronic Atom Research by Timing Application) has the aim to perform kaonic atoms X-ray
transitions measurements, with the goal to better understand aspects of
the low-energy QCD in the strangeness sector. The experiment combined the
excellent low-energy kaon beam generated at DAFNE, allowing to use gaseous targets, with excellent fast...
Dr
Stefania Bufalino
(TO)
10/13/11, 3:30 PM
The information coming from the study of the Lambda-hypernuclei weak decay channels complements the knowledge of strange nuclear systems obtained by both missing mass and gamma-ray spectroscopy measurements. Lambda-hypernuclei decay through both the mesonic weak decay (MWD) processes:
AΛZ →A(Z+1) + pi- (Γpi-) (1)
AΛZ →(A)Z + pi0 (Γpi0) (2)
and the non-mesonic...
Prof.
Elena Botta
(Torino University and INFN-Sezione di Torino)
10/13/11, 4:25 PM
The replacement of a nucleon with a Λ hyperon leads to the production of Λ-hypernuclei. These strange systems are more stable than ordinary nuclei due to the compression of the nuclear core and to the addition of an extra binding energy from the Λ hyperon, which plays the so called “glue-like” role, being free from the Pauli blocking effect. In this respect, Λ-hypernuclei are better candidates...
Dr
Vincenzo Lucherini
(LNF)
10/13/11, 4:50 PM
The SuperB accelerator will be an asymmetric heavy flavour factory
where e+, e- beams will collide with a peak luminosity of 10^36 cm-2 s-1
at the Y(4S) resonance c.m. energy of 10.58 GeV. The B-Bbar meson pairs,
produced with a B.R. > 96% from the decay of the Y(4S), will allow to
measure the B-meson decay channels with unparalled precision.
The SuperB e+, e- beams are characterized, at...
Felice Iazzi
(Politecnico di Torino - Dipartimento di Fisica and INFN - Sezione di Torino)
10/13/11, 5:15 PM
The most recent developments in the field of the Strong Interaction Physics led the High Energy Community to investigate very rare reactions (production of strange baryons, formation of heavy quark systems?) using quite rare projectiles like antiprotons or kaons (1,2). Since these reactions have in general very low cross section, they require very intense beams to produce high statistics and...
Mr
Kristian Piscicchia
(LNF)
10/13/11, 5:40 PM
The AMADEUS experiment [1,2] aims to perform dedicated precision studies in the sector of low-energy kaon-nuclei interaction at the DAFNE collider at LNF-INFN. In particular, the experiment plans to perform measurements of the so-called (very debated) deeply bound kaonic nuclei and, if existent, to measure their properties (binding energies and widths) by using the stopped kaons in cryogenic...
Dr
Frank Rathmann
(Forschungszentrum Jülich)
10/14/11, 9:00 AM
COSY with its polarized beams, including new hardware (like a low-beta section and a Siberian snake), and the available target and detector systems is very close to function not only as a test-bench for the ongoing EDM related investigations on polarimetry, spin coherence time, etc., but it could be also utilized as is for precursor experiments, providing a directly measured solid number...
Prof.
Hans Stroeher
(Forschungszentrum Juelich Germany)
10/14/11, 9:35 AM
The international collaboration PAX (Polarized Antiproton eXperiments) pursues the goal to establish "spin-filtering" (SF) as a method to produce an intense stored beam of polarized antiprotons to be used subsequently in internal experiments. SF repeatedly exploits the spin-dependent interaction of a stored beam with a polarized hydrogen target, thereby slowly building up polarization in the...
Dr
Yuri Litvinov
(GSI, Darmstadt)
10/14/11, 10:10 AM
Stored in heavy-ion storage rings, secondary beams enable a wide range of nuclear physics experiments. Such experiments profit, e.g., from high resolving power and excellent quality of cooled beams, from high revolution frequencies, which allows to "recycle" exotic nuclei, from ultra-high vacuum conditions, which allows to preserve high atomic charge states, from low background conditions,...
Dr
Vito Manzari
(INFN Bari)
10/14/11, 10:35 AM
In order to fully exploit the physics potential of future high energy collider, a Vertex Detector providing high resolution track reconstruction is required. The Vertex Detector should be based on a technology capable of withstanding high track density and in case a large radiation exposure. In particular, near the interaction point the current silicon strip detector are not suitable for the...
Dr
R. Grisenti
(JW Goethe-University Frankfurt am Main)
10/14/11, 11:30 AM
The use of internal targets is a powerful method to investigate fundamental atomic and nuclear processes in a storage ring. We will present here the recent advances in the development of high density internal targets from a microscopic liquid droplet beam, by focusing on their characterization by using highly charged ions (HCI) in a storage ring. In particular, we will show that a liquid...
Prof.
Alexander Vasiliev
(IHEP-Protvino)
10/14/11, 12:05 PM
PANDA is a next generation hadron physics detector planned to be operated at the future Facility for Antiproton and Ion Research (FAIR) at Darmstadt, Germany. It will use intensive cooled antiproton beams with a momentum between 1.5 GeV/c and 15 GeV/c interacting with various internal targets. The PANDA detector is a state-of-the-art internal target detector at the HESR at FAIR allowing the...
Prof.
Eberhard Widmann
(Stefan Meyer Institute)
10/14/11, 12:30 PM
Eberhard Widmann
Stefan Meyer Institute, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
The recently founded Facility for Antiproton and Ion Research FAIR at Darmstadt [1] will provide antiproton beams of intensities that are two orders of magnitude higher than currently available. Within the original plan of the full facility, antiprotons can be decelerated to 30...
Prof.
Alfons Khoukaz
(University Münster)
10/14/11, 12:55 PM
The requirements for the internal target of the PANDA experiment at the future antiproton storage ring HESR/FAIR are manifold and change according to the different physics investigated in the proposed experiments. The most severe limitation comes from the requirement of being a very thin (dilute) and localized clump of matter within the ultra-high vacuum of the storage ring. In case of a...
Prof.
Peter Egelhof
(GSI Darmstadt, Germany)
10/14/11, 1:20 PM
Prof.
Fritz Bosch
(GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany)
Dr
Paola Gianotti
(LNF)
Nuclear Physics
Parallel Contribution
La nuova Facility for Antiproton and Ion Research (FAIR), in costruzione presso il laboratorio GSI di Darmstadt, è il frutto di un lavoro sinergico, del laboratorio insieme ad un ampia comunità scientifica internazionale. Questa attività ha permesso di consolidare ed espandere il panorama scientifico del laboratorio e di aumentarne il livello di internazionalità portandolo a diventare un...
Dr
Alexander Silenko
(Research Institute for Nuclear Problems)
Accelerator Physics
Parallel Contribution
Spin dynamics in electric-dipole-moment (EDM) experiments performed in storage rings is considered. If the frozen spin method [1] is used, the spin rotation in the horizontal plane is almost canceled by an appropriate radial electric field. General equations describing the spin dynamics are derived. Characteristic features of the spin behavior for different initial beam polarizations are...
Dr
Carsten Brandau
(ExtreMe Matter Institut (EMMI) and Research Division, GSI Helmholtzzentrum für Schwerionenforschung)
Nuclear Physics
Plenary Contribution
The resonant process of dielectronic recombination (DR) is a
powerful spectroscopic tool that is utilized for many applications,
e.g. for precision QED studies, astrophysics, benchmarks of
state-of-the-art relativistic atomic theories or lifetimes
measurements [1].
A relatively new use of DR is the deduction of nuclear properties such
as nuclear spin, magnetic moment, change in the...
