scholarly journals The CERN-MEDICIS Isotope Separator Beamline

2021 ◽  
Vol 8 ◽  
Author(s):  
Yisel Martinez Palenzuela ◽  
Vincent Barozier ◽  
Eric Chevallay ◽  
Thomas E. Cocolios ◽  
Charlotte Duchemin ◽  
...  
Keyword(s):  
Ion Beam ◽  
Ion Source ◽  
Mass Separation ◽  
Isotope Separator ◽  
Dipole Magnet ◽  
Transport Efficiency ◽  
Ion Extraction ◽  
Magnetic Field Modeling ◽  
The Individual ◽  
Photo Ionization

CERN-MEDICIS is an off-line isotope separator facility for the extraction of radioisotopes from irradiated targets of interest to medical applications. The beamline, between the ion source and the collection chamber, consists of ion extraction and focusing elements, and a dipole magnet mass spectrometer recovered from the LISOL facility in Louvain-la-Neuve. The latter has been modified for compatibility with MEDICIS, including the installation of a window for injecting laser light into the ion source for resonance photo-ionization. Ion beam optics and magnetic field modeling using SIMION and OPERA respectively were performed for the design and characterization of the beamline. The individual components and their optimal configuration in terms of ion beam extraction, mass separation, and ion transport efficiency is described, along with details of the commissioning and initial performance assessment with stable ion beams.

scholarly journals CERN-MEDICIS: A Review Since Commissioning in 2017

2021 ◽  
Vol 8 ◽  
Author(s):  
Charlotte Duchemin ◽  
Joao P. Ramos ◽  
Thierry Stora ◽  
Essraa Ahmed ◽  
Elodie Aubert ◽  
...  
Keyword(s):  
Separation Efficiency ◽  
Specific Activity ◽  
Ion Beam ◽  
High Specific Activity ◽  
Ion Source ◽  
Mass Separation ◽  
Special Focus ◽  
Proton Synchrotron ◽  
Laser Ion Source ◽  
Isotope Separator

The CERN-MEDICIS (MEDical Isotopes Collected from ISolde) facility has delivered its first radioactive ion beam at CERN (Switzerland) in December 2017 to support the research and development in nuclear medicine using non-conventional radionuclides. Since then, fourteen institutes, including CERN, have joined the collaboration to drive the scientific program of this unique installation and evaluate the needs of the community to improve the research in imaging, diagnostics, radiation therapy and personalized medicine. The facility has been built as an extension of the ISOLDE (Isotope Separator On Line DEvice) facility at CERN. Handling of open radioisotope sources is made possible thanks to its Radiological Controlled Area and laboratory. Targets are being irradiated by the 1.4 GeV proton beam delivered by the CERN Proton Synchrotron Booster (PSB) on a station placed between the High Resolution Separator (HRS) ISOLDE target station and its beam dump. Irradiated target materials are also received from external institutes to undergo mass separation at CERN-MEDICIS. All targets are handled via a remote handling system and exploited on a dedicated isotope separator beamline. To allow for the release and collection of a specific radionuclide of medical interest, each target is heated to temperatures of up to 2,300°C. The created ions are extracted and accelerated to an energy up to 60 kV, and the beam steered through an off-line sector field magnet mass separator. This is followed by the extraction of the radionuclide of interest through mass separation and its subsequent implantation into a collection foil. In addition, the MELISSA (MEDICIS Laser Ion Source Setup At CERN) laser laboratory, in service since April 2019, helps to increase the separation efficiency and the selectivity. After collection, the implanted radionuclides are dispatched to the biomedical research centers, participating in the CERN-MEDICIS collaboration, for Research & Development in imaging or treatment. Since its commissioning, the CERN-MEDICIS facility has provided its partner institutes with non-conventional medical radionuclides such as Tb-149, Tb-152, Tb-155, Sm-153, Tm-165, Tm-167, Er-169, Yb-175, and Ac-225 with a high specific activity. This article provides a review of the achievements and milestones of CERN-MEDICIS since it has produced its first radioactive isotope in December 2017, with a special focus on its most recent operation in 2020.

A New Design and Computer Simulation of a 5-Electrode Ion Extraction/Focusing System

2005 ◽  
Vol 107 ◽  
pp. 21-24 ◽  
Author(s):  
M. Medhisuwakul ◽  
Thiraphat Vilaithong ◽  
Jürgen Engemann
Keyword(s):  
Microwave Plasma ◽  
Ion Beam ◽  
Plasma Source ◽  
Ion Source ◽  
Simulation Software ◽  
Ion Current ◽  
Extraction System ◽  
Beam Shape ◽  
Ion Extraction ◽  
Argon Ion

A 13.56 MHz radio-frequency (rf) driven multicusp ion source has been constructed [1] to produce a high argon ion current density. Milliampere-range argon ion current can be extracted from the source. An in-waveguide microwave plasma source has been utilized as the ion beam neutralizer [2]. The neutralization source was placed 20 cm downstream from the extraction system. With the former extraction system, comprised of extraction electrodes and an Einzel lens, the electrons from the neutralizer were attracted to the high positive potential of the lens. Consequently, the potential of the lens drops and the beam is diverged. To suppress electrons from being accelerated to the Einzel lens a negatively biased electrode was placed before the last electrode, which is grounded, to produce a retarding electric field for electrons. The hole of the electrode was made small to make sure that the potential at the center is negative enough to suppress electrons. All simulations have been performed with the KOBRA3-INP simulation software. The results of the beam shape from the simulation will be presented.

Gas-discharge ion sources for electromagnetic mass separation on a heavy-ion beam II. operating speed of ion source

1976 ◽  
Vol 41 (5) ◽  
pp. 999-1000
Author(s):  
A. P. Kabachenko ◽  
I. V. Kuznetsov ◽  
Li Hen Su ◽  
N. I. Tarantin
Keyword(s):  
Ion Beam ◽  
Heavy Ion ◽  
Gas Discharge ◽  
Ion Source ◽  
Ion Sources ◽  
Mass Separation ◽  
Operating Speed ◽  
Electromagnetic Mass ◽  
Heavy Ion Beam

Gas-discharge ion sources for electromagnetic mass separation on a heavy-ion beam I. Ion source construction and efficiency

1976 ◽  
Vol 41 (5) ◽  
pp. 998-999
Author(s):  
N. S. Ivanov ◽  
A. P. Kabachenko ◽  
I. V. Kuznetsov ◽  
N. I. Tarantin
Keyword(s):  
Ion Beam ◽  
Heavy Ion ◽  
Gas Discharge ◽  
Ion Source ◽  
Ion Sources ◽  
Mass Separation ◽  
Electromagnetic Mass ◽  
Heavy Ion Beam

Increase of Boron Ion Beam Current Extracted from a Multi-Cusp Ion Source in an Ion Doping System with Mass Separation

2008 ◽  
Author(s):  
Yutaka Inouchi ◽  
Shojiro Dohi ◽  
Masahiro Tanii ◽  
Junichi Tatemichi ◽  
Masashi Konishi ◽  
...  
Keyword(s):  
Ion Beam ◽  
Beam Current ◽  
Ion Source ◽  
Mass Separation ◽  
Ion Doping

Nucleation and Early Growth of Sputtered thin Films

1970 ◽  
Vol 28 ◽  
pp. 516-517
Author(s):  
Dudley M. Sherman ◽  
Thos. E. Hutchinson
Keyword(s):  
Thin Films ◽  
Electron Beam ◽  
Ion Beam ◽  
Ion Source ◽  
Water Cooling ◽  
Stages Of Growth ◽  
Lens Assembly ◽  
Microscope Technique ◽  
Ion Beam Sputter Deposition

The in situ electron microscope technique has been shown to be a powerful method for investigating the nucleation and growth of thin films formed by vacuum vapor deposition. The nucleation and early stages of growth of metal deposits formed by ion beam sputter-deposition are now being studied by the in situ technique.A duoplasmatron ion source and lens assembly has been attached to one side of the universal chamber of an RCA EMU-4 microscope and a sputtering target inserted into the chamber from the opposite side. The material to be deposited, in disc form, is bonded to the end of an electrically isolated copper rod that has provisions for target water cooling. The ion beam is normal to the microscope electron beam and the target is placed adjacent to the electron beam above the specimen hot stage, as shown in Figure 1.

Optimizing Gas-Assisted Processes for Ga and Xe FIB Circuit Edit Application

2016 ◽  
Author(s):  
Valery Ray ◽  
Josef V. Oboňa ◽  
Sharang Sharang ◽  
Lolita Rotkina ◽  
Eddie Chang ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Structural Damage ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Beam Width ◽  
Ion Source ◽  
Reconstruction Technique ◽  
Beam Diameter ◽  
Current Profile ◽  
Single Beam

Abstract Despite commercial availability of a number of gas-enhanced chemical etches for faster removal of the material, there is still lack of understanding about how to take into account ion implantation and the structural damage by the primary ion beam during focused ion beam gas-assisted etching (FIB GAE). This paper describes the attempt to apply simplified beam reconstruction technique to characterize FIB GAE within single beam width and to evaluate the parameters critical for editing features with the dimensions close to the effective ion beam diameter. The approach is based on reverse-simulation methodology of ion beam current profile reconstruction. Enhancement of silicon dioxide etching with xenon difluoride precursor in xenon FIB with inductively coupled plasma ion source appears to be high and relatively uniform over the cross-section of the xenon beam, making xenon FIB potentially suitable platform for selective removal of materials in circuit edit application.

Characteristics of extracted ion beam from a cesium-free negative ion source using sheet plasma

2020 ◽  
Vol 91 (11) ◽  
pp. 113302
Author(s):  
H. Kaminaga ◽  
T. Takimoto ◽  
A. Tonegawa ◽  
K. N. Sato
Keyword(s):  
Ion Beam ◽  
Ion Source ◽  
Negative Ion ◽  
Sheet Plasma
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