Development of a versatile multiaperture negative ion source
M. Cavenago, T. Kulevoy, S. Petrenko, G. Serianni, V. Antoni et al.
A 60 kV ion source (9 beamlets of 15 mA each of H) and plasma generators are being developed at Consorzio RFX and INFN-LNL, for their versatility in experimental campaigns and for training. Unlike most experimental sources, the design aimed at continuous operation. Magnetic configuration can achieve ... [Rev. Sci. Instrum. 83, 02A707 (2012)] published Mon Feb 13, 2012.
Numerical simulation of gridded electrostatic lens
G. N. Kropachev, N. N. Alexeev, A. I. Balabin, T. V. Kulevoy, and V. I Nikolaev
Gridded electrostatic lenses are frequently used in extraction systems and low energy ion beam transport line. Typically, for numerical simulation the grid is treated as a metal plate transparent for beam particles. The influence of real grid geometry on the beam dynamics in the gridded lens has bee ... [Rev. Sci. Instrum. 83, 02B907 (2012)] published Mon Feb 13, 2012.
Study on the beam transport from the Bio-Nano ECRIS
T. Uchida, H. Minezaki, K. Oshima, R. Racz, M. Muramatsu et al.
The beam transport of N ion and C ion in the Bio-Nano ECRIS with min-B configuration was investigated based on the ion beam profiles. The N beam could be focused under the low-beam current conditions. Also the C beam could be focused in spite of the large space-charge effect which will lead the dive ... [Rev. Sci. Instrum. 83, 02B713 (2012)] published Mon Feb 13, 2012.
Use of a wire scanner for monitoring residual gas ionization in Soreq Applied Research Accelerator Facility 20 keV/u proton/deuteron low energy beam transport beam line
B. Vainas, I. Eliyahu, L. Weissman, and D. Berkovits
The ion source end of the Soreq Applied Research Accelerator Facility accelerator consists of a proton/deuteron ECR ion source and a low energy beam transport (LEBT) beam line. An observed reduction of the radio frequency quadrupole transmission with increase of the LEBT current prompted additional ... [Rev. Sci. Instrum. 83, 02B712 (2012)] published Mon Feb 13, 2012.
Deuteron injector for Peking University Neutron Imaging Facility project
H. T. Ren, S. X. Peng, P. N. Lu, Q. F. Zhou, Z. X. Yuan et al.
The deuteron injector developed for the PKUNIFTY (Peking University Neutron Imaging Facility) has been installed and commissioned at Peking University (PKU). The injector system must transfer 50 keV 50 mA of D ion beam to the entrance of the 2 MeV radio frequency quadrupole (RFQ) with 10% duty facto ... [Rev. Sci. Instrum. 83, 02B711 (2012)] published Mon Feb 13, 2012.
A new extraction system for the Linac4 Hion source
O. Midttun, T. Kalvas, M. Kronberger, J. Lettry, H. Pereira et al.
As part of the CERN accelerator complex upgrade, a new linear accelerator for H (Linac4) is under construction. The ion source design is based on the non-caesiated DESY RF-driven ion source, with the goal of producing an H beam of 80 mA beam current, 45 keV beam energy, 0.4 ms pulse length, and 2 Hz ... [Rev. Sci. Instrum. 83, 02B710 (2012)] published Mon Feb 13, 2012.
Correlation between the plasma parameters and the extracted current density in the volume-production based sources of negative hydrogen ions
St. Lishev, A. Shivarova, and Kh. Tarnev
Unified description of a volume-production based source of negative hydrogen ions, including its three regionsthe driver, the plasma expansion through the magnetic filter, and the extraction of the ions at the position of the first electrode of the extraction systemis presented within a two-dimensio ... [Rev. Sci. Instrum. 83, 02A709 (2012)] published Mon Feb 13, 2012.
Development of low-energy and high-current-density ion beam system
H. Sakakita, S. Kiyama, Y. Hirano, H. Koguchi, T. Shimada et al.
A low-energy ion beam system operating at a dc voltage of less than 300 V was developed using an ion source with a multicusp magnetic field. A high-current-density ion beam of 6.9 mA/cm was successfully extracted at the electrode. The beam extraction characteristics for flat and concave electrodes w ... [Rev. Sci. Instrum. 83, 02B708 (2012)] published Fri Feb 10, 2012.
Use of the focusing multi-slit ion optical system at RUssian Diagnostic Injector (RUDI)
A. Listopad, J. Coenen, V. Davydenko, A. Ivanov, V. Mishagin et al.
The upgrade of the diagnostic neutral beam injector RUDI in 2010 was performed to increase the beam density at the focal plane in accordance with the requirements of charge-exchange recombination spectroscopy diagnostics. A new focusing ion-optical system (IOS) with slit beamlets and an enlarged ape ... [Rev. Sci. Instrum. 83, 02B707 (2012)] published Fri Feb 10, 2012.
A 2.45 GHz electron cyclotron resonance proton ion source and a dual-lens low energy beam transport
W. H. Zhang, H. Y. Ma, Y. Yang, Q. Wu, X. Z. Zhang et al.
The structure and preliminary commissioning results of a new 2.45 GHz ECR proton ion source and a dual-lens low energy beam transport (LEBT) system are presented in this paper. The main magnetic field of the ion source is provided by a set of permanent magnets with two small electro-solenoid magnets ... [Rev. Sci. Instrum. 83, 02A329 (2012)] published Fri Feb 10, 2012.
Development of DRAGON electron cyclotron resonance ion source at Institute of Modern Physics
W. Lu, D. Z. Xie, X. Z. Zhang, B. Xiong, L. Ruan et al.
A new room temperature electron cyclotron resonance (ECR) ion source, DRAGON, is under construction at IMP. DRAGON is designed to operate at microwaves of frequencies of 14.518 GHz. Its axial solenoid coils are cooled with evaporative medium to provide an axial magnetic mirror field of 2.5 T at the ... [Rev. Sci. Instrum. 83, 02A328 (2012)] published Fri Feb 10, 2012.
Improvement of efficiency and temperature control of induction heating vapor source on electron cyclotron resonance ion source
T. Takenaka, R. Kiriyama, M. Muramatsu, A. Kitagawa, T. Uchida et al.
An electron cyclotron resonance ion source (ECRIS) is used to generate multicharged ions for many kinds of the fields. We have developed an evaporator by using induction heating method that can generate pure vapor from solid state materials in ECRIS. We develop the new matching and protecting circui ... [Rev. Sci. Instrum. 83, 02A327 (2012)] published Fri Feb 10, 2012.
Intense beams from gases generated by a permanent magnet ECR ion source at PKU
H. T. Ren (任海涛), S. X. Peng (彭士香), P. N. Lu (吕鹏南), S. Yan (颜莎), Q. F. Zhou (周泉丰) et al.
An electron cyclotron resonance (ECR) ion source is designed for the production of high-current ion beams of various gaseous elements. At the Peking University (PKU), the primary study is focused on developing suitable permanent magnet ECR ion sources (PMECRs) for separated function radio frequency ... [Rev. Sci. Instrum. 83, 02B905 (2012)] published Thu Feb 9, 2012.
Progress towards the development of a realistic electron cyclotron resonance ion source extraction model
D. Winklehner, D. Leitner, J. Y. Benitez, C. M. Lyneis, and M. M. Strohmeier
In this paper, an ongoing effort to provide a simulation and design tool for electron cyclotron resonance ion source extraction and low energy beam transport is described and benchmarked against experimental results. Utilizing the particle-in-cell code WARP, a set of scripts has been developed: A se ... [Rev. Sci. Instrum. 83, 02B706 (2012)] published Thu Feb 9, 2012.
First commissioning results with the Grenoble test electron cyclotron resonance ion source at iThemba LABS
R. Thomae, J. Conradie, H. Delsink, H. Du Plessis, D. Fourie et al.
iThemba Laboratory for Accelerator Based Science (iThemba LABS) is a multi-disciplinary accelerator facility. One of its main activities is the operation of a separated-sector cyclotron with a K-value of 200, which provides beams of various ion species. These beams are used for fundamental nuclear p ... [Rev. Sci. Instrum. 83, 02A323 (2012)] published Thu Feb 9, 2012.
Design of a compact electron cyclotron resonance ion source for medium charge state light ions
D. Button, M. A. C. Hotchkis, and G. N. Milford
At the Australian Nuclear Science and Technology Organization we are developing a new isotope ratio mass spectrometer based on the measurement of multiple charge state ions. We have carried out a review of our existing ECR ion source and identified a number of design flaws. For the new instrument, w ... [Rev. Sci. Instrum. 83, 02A322 (2012)] published Thu Feb 9, 2012.
Reliability test of an electron cyclotron resonance ion source for accelerator driven sub-critical system
B. Cui, B. Tang, R. Ma, Q. Huang, Y. Ma et al.
The reliability test of an electron cyclotron resonance ion source developed for accelerator driven sub-critical system is carried out in China Institute of Atomic Energy. A unique technique to improve the reliability is adopted. The source is operated for more than 200 h at 75 keV, 100 mA extracted ... [Rev. Sci. Instrum. 83, 02A321 (2012)] published Thu Feb 9, 2012.
Low energy beam transport for facility for rare isotope beams driver linear particle accelerator
L. T. Sun, D. Leitner, G. Machicoane, E. Pozdeyev, V. Smirnov et al.
The driver linac for the facility for rare isotope beams (FRIB) will provide a wide range of primary ion beams for nuclear physics research. The linac will be capable of accelerating a uranium beam to an energy of up to 200 Mev/u and delivering it to a fragmentation target with a maximum power of 40 ... [Rev. Sci. Instrum. 83, 02B705 (2012)] published Wed Feb 8, 2012.
Electrostatic energy analyzer measurements of low energy zirconium beam parameters in a plasma sputter-type negative ion source
Giovanni M. Malapit, Christian Lorenz S. Mahinay, Matthew D. Poral, and Henry J. Ramos
A plasma sputter-type negative ion source is utilized to produce and detect negative Zr ions with energies between 150 and 450 eV via a retarding potential-type electrostatic energy analyzer. Traditional and modified semi-cylindrical Faraday cups (FC) inside the analyzer are employed to sample negat ... [Rev. Sci. Instrum. 83, 02B704 (2012)] published Wed Feb 8, 2012.
Initial commissioning results with the NSCL Electron Beam Ion Trap
S. Schwarz, G. Bollen, J. R. Crespo Lopez-Urrutia, O. Kester, K. Kittimanapun et al.
The ReA reaccelerator is being added to the National Superconducting Cyclotron Laboratory (NSCL) fragmentation facility in order to provide exotic rare-isotope beams, not available at the Isotope Separation On-Line facilities, in the several-MeV/u energy range. The first stage of the NSCL reaccelera ... [Rev. Sci. Instrum. 83, 02A908 (2012)] published Wed Feb 8, 2012.
Profiles of ion beams and plasma parameters on a multi-frequencies microwaves large bore electron cyclotron resonance ion source with permanent magnets
Yushi Kato, Naoki Sakamoto, Ryutaro Kiriyama, Tomoya Takenaka, Yosuke Kurisu et al.
In order to contribute to various applications of plasma and beams based on an electron cyclotron resonance, a new concept on magnetic field with all magnets on plasma production and confinement has been proposed with enhanced efficiency for broad and dense ion beam. The magnetic field configuration ... [Rev. Sci. Instrum. 83, 02A317 (2012)] published Wed Feb 8, 2012.
Light ion source for proton/deuteron production at CEA Saclay for the Spiral2 project
O. Tuske, G. Adroit, O. Delferriere, J-F. Denis, Y. Gauthier et al.
The production of rare radioactive ion beam (RIB) far from the valley of stability is one of the final purposes of the Spiral2 facility in Caen. The RIB will be produced by impinging a deuteron beam onto a carbon sample to produce a high neutron flux, which will interact with a uranium target. The p ... [Rev. Sci. Instrum. 83, 02A316 (2012)] published Wed Feb 8, 2012.
Development of compact linear accelerator in KBSI
Jang-Hee Yoon, Byoung-Seob Lee, Seyong Choi, Jin Yong Park, Jung-Woo Ok et al.
The compact linear accelerator using a 28 GHz ECRIS is under construction in KBSI, South Korea. The main capability of this facility is the production of fast neurons for the neutron radiography. The designing of a superconducting magnet, microwave transmission system, beam extraction, and plasma ch ... [Rev. Sci. Instrum. 83, 02A315 (2012)] published Wed Feb 8, 2012.
Prospects for advanced electron cyclotron resonance and electron beam ion source charge breeding methods for EURISOL
P. Delahaye, A. Galata, J. Angot, G. Ban, L. Celona et al.
As the most ambitious concept of isotope separation on line (ISOL) facility, EURISOL aims at producing unprecedented intensities of post-accelerated radioactive isotopes. Charge breeding, which transforms the charge state of radioactive beams from 1+ to an n+ charge state prior to post-acceleration, ... [Rev. Sci. Instrum. 83, 02A906 (2012)] published Tue Feb 7, 2012.
Production of rare isotope beams at the Texas A&M University Cyclotron Institute
G. Tabacaru, D. P. May, J. Arje, G. Chubarian, H. Clark et al.
The Cyclotron Institute at Texas A&M is currently configuring a scheme for the production of radioactive-ion beams that incorporates a light-ion guide and a heavy-ion guide coupled with an electron-cyclotron-resonance ion source constructed for charge-breeding. This scheme is part of an upgrade to t ... [Rev. Sci. Instrum. 83, 02A905 (2012)] published Tue Feb 7, 2012.
Status of the plasma generator of the superconducting proton linac
M. Kronberger, D. Faircloth, J. Lettry, M. Paoluzzi, H. Pereira et al.
In the framework of the superconducting proton linac (SPL) study at CERN, a new non-cesiated H plasma generator driven by an external 2 MHz RF antenna has been developed and successfully operated at repetition rates of 50 Hz, pulse lengths of up to 3 ms, and average RF powers of up to 3 kW. The coup ... [Rev. Sci. Instrum. 83, 02A703 (2012)] published Tue Feb 7, 2012.
Molecular and negative ion production by a standard electron cyclotron resonance ion source
R. Racz, S. Biri, Z. Juhasz, B. Sulik, and J. Palinkas
Molecular and negative ion beams, usually produced in special ion sources, play an increasingly important role in fundamental and applied atomic physics. The ATOMKI-ECRIS is a standard ECR ion source, designed to provide highly charged ion (HCI) plasmas and beams. In the present work, H, O, OH, O, C ... [Rev. Sci. Instrum. 83, 02A313 (2012)] published Tue Feb 7, 2012.
Reversible electron beam heating for suppression of microbunching instabilities at free-electron lasers
Christopher Behrens, Zhirong Huang, and Dao Xiang
The presence of microbunching instabilities due to the compression of high-brightness electron beams at existing and future x-ray free-electron lasers (FELs) results in restrictions on the attainable lasing performance and renders beam imaging with optical transition radiation impossible. The instab ... [Phys. Rev. ST Accel. Beams 15, 022802 ] published .
Level structure in the transitional nucleus Au
S. C. Wang, X. H. Zhou, Y. D. Fang, Y. H. Zhang, N. T. Zhang et al.
Excited states in Au have been studied experimentally via the Os(Li, 4n) reaction at a beam energy of 44 MeV. Based on the gamma-gamma-t coincidence measurement, a level scheme consisting of 15 new transitions and 10 new levels is established for Au. The triaxial shape-polarizing effect of the high- ... [Phys. Rev. C 85, 027301 ] published .
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