Matthew Alexander Fraser
(CERN)
17/12/2012, 18:05
Poster
The feasibility of pre-bunching at a sub-harmonic frequency into the REX-ISOLDE RFQ was investigated to respond to a request for a 100 ns bunch spacing from several new experiments striving to operate at the HIE-ISOLDE facility, see e.g. [1]. The HIE-ISOLDE project [2] represents a major upgrade of the ISOLDE nuclear facility with a mandate to increase the energy and intensity, as well as...
Eleftherios Zografos
(CERN)
17/12/2012, 18:05
CATHI poster
In this poster the 3D Integration models for the various installation stages of HIE-Isolde are presented. Those three in total stages vary from the 5.5 MeV Stage 1 to the 10 MeV Stages 2a and 2b. Additionally we focus on the two most demanding from the integration point of view areas i.e. the intercryomodule area and the quadrupole doublets. Finally the progress on the integration of the...
Vadym Paziy
(Universidad Complutense de Madrid),
Victoria Vedia
(Universidad Complutense de Madrid (UCM))
17/12/2012, 18:05
Poster
V. Vedia1, L.M. Fraile1, H. Mach1, B. Olaizola1, V. Paziy1, E. Picado1, J.M. Udías1
1 Grupo de Física Nuclear, Universidad Complutense, Madrid, Spain
The measurement of absolute nuclear transition probabilities is a very sensitive tool to study the structure of atomic nuclei. Direct access to transition rates can be achieved via the lifetimes of the nuclear levels de-excited in...
Paula R. P. Allegro
(Instituto de Física, Universidade de São Paulo, São Paulo, Brazil and Dipartimento di Fisica e Astronomia dell’Università and INFN, Sezione di Padova, I-35131, Padova, Italy)
17/12/2012, 18:05
Poster
One of the most reliable models to describe the nucleus is the Large Scale Shell Model, which has demonstrated to reproduce with very good accuracy detailed nuclear properties (see ref. [1] for a review). In the A=50-80 mass region, many studies have been published attempting to explain the role of the 0g9/2 orbital in the high spin states, especially in the neutron-rich nuclei like, for...
Michal Adam Czapski
(CERN)
17/12/2012, 18:05
CATHI poster
A search of new target materials showing better mechanical characteristics and release properties of radioisotopes is one of the aims of the HIE-ISOLDE project.
It has been already proven that by controlling the microstructure of a target material in terms of grain size down to 50 nm, and porosity its release properties can be altered. On the other hand such changes also influence its...
Mr
Sebastian Rothe
(CERN)
17/12/2012, 18:05
Poster
The resonance ionization laser ion source (RILIS) is the most widely used ion source at ISOLDE. Up to three beams of precisely tuned pulsed lasers ionize the element of interest with high selectivity and efficiency. To keep up with the increasing demand for RILIS use the fleet of lasers has been gradually upgraded in recent years. The system now comprises three tunable dye lasers and three...
Andrea Polato
(CERN)
17/12/2012, 18:05
CATHI poster
Cooling and Ventilation group’s activity can be split into two main tasks:
1. Upgrade works during LS1:
a. Modification of the Cooling and Ventilation systems due to the new targets handling robots to be installed inside the Tunnel;
b. Cooling and Ventilation of the Class A Laboratory in prevision of the MEDICIS Laboratory extension;
2. Design Study activities related to the...
Jacobo Abraham Montano Carrizales
17/12/2012, 18:05
CATHI poster
The High Intensity and Energy (HIE)-ISOLDE project is a major upgrade of the existing ISOLDE and REX-ISOLDE facilities with the objective of increasing the energy and the intensity of the delivered radioactive ion beam (RIB) [1]. In order to accommodate the future increase of primary beam intensity delivered by the new LINAC4 H- driver, a major study is being carried out to upgrade the...
Mathieu Augustin
(CERN)
17/12/2012, 18:05
CATHI poster
The High Intensity and Energy (HIE)-ISOLDE project at CERN, features major improvements of the High Resolution Separator (HRS).
In its current design, the performance of the HRS is constrained by ion source emittance and second-order distortions in the magnet dipoles. A new layout has been proposed to overcome these limitations. It firstly features the operation of the RFQ beam cooler in...
Robert Stegmann
(Technische Universitaet Darmstadt (DE))
17/12/2012, 18:05
Poster
In order to investigate the effect of shell stabilization of mixed-symmetry states [1] it is intended to identify and study the mixed symmetry states in the N = 80 isotones. A necessary prerequisite for such an endeavor is the measurement of the E2 transition strength of the first 2+ state. A beam of radioactive 142Sm ions with an energy of 2.85 MeV/u was impinging on a 1.4 mg/cm2 48Ti as well...
Leonel Morejon Hernandez
17/12/2012, 18:05
CATHI poster
Using Fluka simulation code for particle transport by Monte-Carlo methods, and Flair software, the radiation levels' assessment has been done for different stages of engineering design. Dose levels for both prompt radiation (due to targets' irradiation in the esperimental hall) and non-prompt radiation (due to the hot targets stored) have been calculated. The several contributions to dose have...
Esteban Daniel Cantero
17/12/2012, 18:05
CATHI poster
The space for beam diagnostics at the HIE-ISOLDE REX postaccelerator is limited in the longitudinal dimension due to the beam optics requirements. The diagnostic boxes that will be installed between the cryomodules contain among other instruments a short Faraday cup (FC), which is used for measuring the beam currents. The characterization of the performance for this FC is very critical due to...
Davide Lanaia
17/12/2012, 18:05
CATHI poster
The HIE–ISOLDE superconducting (SC) linac will start operation in 2015 with a total of 32 SC cavities envisaged when the installation is completed. The high numbers of cavities that operators will have to tune requires new software applications in order to ensure a fast machine set up. This contribution will show some ideas, and preliminary results about the applications that will be developed...
Guillaume Kautzmann
17/12/2012, 18:05
CATHI poster
The HIE‐ISOLDE project is a major upgrade of the ISOLDE REX facility. To run the linac in the optimum conditions the superconducting RF cavities and solenoids placed in cryomodules have to be aligned on the REX Nominal Beam Line (NBL) within a precision of, respectively, 0.3 mm and 0.15 mm at one sigma level along directions perpendicular to the beam axis. An integrated permanent alignment...
Noemie Marie Jecklin
(CERN)
17/12/2012, 18:05
CATHI poster
The HIE-ISOLDE project is the upgrade of the existing facility ISOLDE, which is dedicated to the production of a large variety of radioactive ion beams for many different experiments.
Among other things, HIE-ISOLDE project requires the production of many accelerating superconducting cavities in order to increase the speed and the energy of the beam. These superconducting cavities are made...
Jasna Papuga
(Instituut voor Kern- en Stralingsfysica, KU Leuven, B-3001 Leuven, Belgium)
17/12/2012, 18:05
Poster
Laser spectroscopy was performed on bunched beams of K (Z = 19) isotopes at the COLLAPS beam-line at ISOLDE-CERN. Nuclear spins, magnetic moments and mean square charge radii were deduced for 48,49,50,51K providing information about the nuclear structure beyond N = 28. In order to be able to measure the most exotic isotope (N = 32), a highly-efficient light collection region was developed and...
Mr
Ivan Budincevic
(IKS, KU Leuven)
17/12/2012, 18:05
Poster
Two successful experimental campaigns have been carried out in 2012 on the new Collinear Resonant Ionization Spectroscopy (CRIS) experimental beam line. During these campaigns a sensitivity to 1 atom in 60 was demonstrated using the measured yield of 202Fr as a reference. This work has also demonstrated a suppression of isobaric contamination by a factor of 105.
These experiments have...
Celine Van Beveren
(K)
17/12/2012, 18:05
Poster
One of the regions of the nuclear chart that has drawn considerable interest is that of the neutron-deficient Pb isotopes with Z ~ 82 and N ~ 104. This region exhibits a dramatic manifestation of shape coexistence.
The occurrence of competing proton intruder states in the odd-Z Tl isotopes opens the ground for complex structures at low energy leading to isomerism. However, the spectroscopic...
Martino Colciago
(CERN)
17/12/2012, 18:05
CATHI poster
In the framework of the High Intensity and Energy (HIE)-ISOLDE project at CERN the working specifications of the High Resolution Separator will change.
The HRS dipole magnetic field has to be controlled with an accuracy of a few ppm and a much faster response than the current one. In order to achieve this strict requirement an accurate model of the magnet has to be determined and a new low...
Panagiotis Farantatos
17/12/2012, 18:05
CATHI poster
The aim of the HIE-ISOLDE project is to greatly expand the physics program compared to that of REX-ISOLDE, containing three major elements: higher energies, improvements in beam quality and flexibility, and higher beam intensities. In the framework of this project, a new beam focusing quadrupole electromagnet is designed, which shall be followed by its series production in industry. Extensive...
Razvan Lica
(Horia Hulubei National Institute of Physics and Nuclear Engineering)
17/12/2012, 18:05
Poster
The beta decay of 80Zn was part in systematic studies of neutron rich Zn nuclei. The measurements were performed at the ISOLDE facility at CERN. The beta gated gamma-gamma coincidences provided a significantly modified level scheme for 80Ga compared to the previously reported one. The main goal of our research was to identify excitation energies of two beta decaying states. The new level...
Serena Cimmino
(Universita e INFN (IT))
17/12/2012, 18:05
CATHI poster
The main objectives of the BETA BEAMS project is to produce high energy beams of pure electron neutrinos and anti-neutrinos for oscillation experiments, by beta decay of 6He and 18Ne radioactive ion beams, studied in a decay ring at γ=100.
The production of 6He beam has already been accomplished using a thick beryllium oxide target; however, the production of the needed rate of 18Ne has...
Susanne Kreim
(CERN)
17/12/2012, 18:05
Poster
As matter becomes very neutron-rich, the proton-neutron imbalance changes the structure of nuclei with respect to the level ordering observed in stable nuclei. Since models used for predicting the structure of exotic nuclei are fitted to describe the shell gaps in stable nuclei, the question arises whether these models produce a correct description of the shell closures far from stability...
Alex Garcia Sosa
(CERN)
17/12/2012, 18:05
CATHI poster
In the context of the HIE-ISOLDE upgrade of the post-accelerator, a beam profile monitor is foreseen as an instrumentation device for the superconducting LINAC and beam transfer lines. It consists of a slit scanner and a redesigned Faraday cup. The effect of the different slit sizes on the current monitor has been studied in order to optimize the beam profile results. Numerical simulations...
Sabine Bönig
(Technische Universität Darmstadt)
17/12/2012, 18:05
Poster
The cadmium isotopic chain with a proton number of Z=48 is one of the most interesting in nuclear structure physics due to the proximity to the proton shell closure at Z=50. Performed Coulomb excitation experiments on 122-126Cd exhibit high excitation strengths for the 0_gs^+→2_1^+ transition. Shell model calculations are not able to reproduce the experimentally found values although the shell...
Ralf Erik Rossel
(Johannes-Gutenberg-Universitaet Mainz (DE))
17/12/2012, 18:05
Poster
With a steadily increasing on-line operation time of a record 2500 hours in the year 2011, the Resonance Ionization Laser Ion Source (RILIS) is one of the key components of the ISOLDE on-line isotope production user facility at CERN, Geneva, Switzerland. It has played a major role in providing highly demanded radioactive ion beams of various elements with the highest efficiency and unmatched...
Prof.
Andrei Andreyev
(University of York)
17/12/2012, 18:05
Poster
On behalf of York-KU Leuven-Gatchina-Mainz-Bratislava-Liverpool-ISOLDE collaboration
The competition between spherical and deformed nuclear shapes at low energy gives rise to shape coexistence in the region of the neutron-deficient lead isotopes with Z~82 and N~104 [1]. In order to determine to which extend the ground and/or isomeric states of those and neighboring nuclides are affected by...
Mario Armin Hermann
(Hochschule Karlsruhe, Technik und Wirtschaft)
17/12/2012, 18:05
CATHI poster
The High Intensity and Energy Isolde (HIE-ISOLDE) project aims at upgrading CERNs present ISOLDE and REX-ISOLDE facilities to increase the energy and intensity of the delivered radioactive ion beams. This is achieved by means of a new post-accelerating, superconducting linac, accompanied by a design study of the major subsystems and the target areas, linked with the increased intensity of the...
Deyan Yordanov
(Max-Planck-Gesellschaft (DE))
17/12/2012, 18:05
Poster
We report on the first study of cadmium by high-resolution laser spectroscopy. Nuclear spins, electromagnetic moments and root mean square charge radii of ground and isomeric states have been determined along the chain, ultimately reaching the neutron 50 and 82 shell closures. These experimental data provide a solid basis for improving the nuclear-structure understanding in the vicinities of...
Mr
Vadym Paziy
(Universidad Complutense de Madrid)
17/12/2012, 18:05
Poster
V. Paziy1, H. Mach1, L.M. Fraile1, A. Aprahamian3, C. Bernards4, J.A. Briz5, B. Bucher3, C. J. Chiara6, Z. Dlouhy7, D. Ghita2, I. Gheorghe2, P. Hoff8, U. Köster9, W. Kurcewicz10, R. Lica2, N. Marginean2, R. Marginean2, B. Olaizola1, J.M. Régis4, M. Rudigier4, J.M. Udías1, T. Sava2, G. Simpson9, M. Stanoiu2, L. Stroe2, W. Walters11
1 Grupo de Física Nuclear, Universidad Complutense, Madrid,...
Prof.
William Walters
(University of Maryland)
17/12/2012, 18:05
Poster
Following the identification of the deformed particle-hole intruder states in 67Co by Pauwels et al., and the subsequent identification of a second low-energy 1+ level in adjacent odd-odd 66Co, along with other isomeric levels, the question arose, “how can the structure of 66Co be compared with the evolution of the structure of the lighter odd-odd Co isotopes?” Stated another way, are there...
Matthias Nagl
(Uni-Göttingen)
17/12/2012, 18:05
Poster
In order to optimize beam-time usage and sample handling as well as radio protection a new GPS implantation chamber with advanced load-lock-system is currently being built. In addition to this implantation chamber a second chamber containing facilities for beam deceleration/acceleration with the sample held at a potential of up to ± 60 kV will be mounted right behind the first chamber. In this...
Carla Babcock
17/12/2012, 18:05
CATHI poster
The ISCOOL RFQCB (radio frequency quadrupole cooler and buncher) at the
CERN facility ISOLDE is used to reduce the emittance and energy spread of the beam, and to give it a time structure before it is sent to the experiments [1]. The upgrade to ISOLDE, HIE-ISOLDE, will encompass many aspects, including an upgrade to the high resolution separator area that will see the ISCOOL design improved...
Andrey Shornikov
17/12/2012, 18:05
CATHI poster
In order to comply with the extended requirements of the experimental program at ISOLDE after the upgrade to HIE-ISOLDE and with the prospective of the TSR@ISOLDE an upgrade of the existing REXEBIS charge breeder is being investigated. The new breeder is aiming to provide ions for reacceleration with A/q< 4.5 required by the linac and with a repetition rate of 100 Hz (linac limit). To reach...
