Keyword: cyclotron
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MOPC036 Design of RF Cavity for Compact 9 MeV Cyclotron cavity, simulation, resonance, acceleration 151
 
  • H.S. Song, J.-S. Chai, H.W. Kim, B.N. Lee, J.H. Oh
    SKKU, Suwon, Republic of Korea
 
  The number of PET facility is rapidly increasing worldwide. To get PET image, circular accelerator such as cyclotron is needed. Compact 9 MeV H-cyclotron, which has a diameter of 1.25m is being designed at Sungkyunkwan University starting from July 2010 for getting F-18. It is expected to be constructed by next year. In this paper, RF system of 9 MeV cyclotron including design processes and detail analysis of result is reported. RF system mainly describes RF cavity design.  
 
MOPC064 Upgrade and Commissioning of the 88-Inch Cyclotron Final Power Amplifier resonance, ion, impedance, cathode 229
 
  • M. Kireeff Covo, D.F. Byford, P.W. Casey, A. Hodgkinson, S. Kwiatkowski, C.M. Lyneis, L. Phair, A. Ratti, C.P. Reiter
    LBNL, Berkeley, California, USA
 
  Funding: This work was supported by the Director, Office of Science, Office of High Energy and Nuclear Physics, Division of Nuclear Physics, U.S. Department of Energy under Contract DE-AC02-05CH11231.
The RF system of the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory is a resonant system based on the quarter-wave cantilever type resonating structure. Power is fed to the Dee from the anode of the 500 kW RCA 6949 tetrode tube operating in grounded cathode configuration, which is capacitively coupled to the side of the Dee stem. The tube is obsolete and makes its continued use impractical. A new final power amplifier was designed and built using the commercially available tube Eimac 4W150,000E. The new amplifier was successfully commissioned and has been reliable and easy to operate. An overview of the system upgrade and details of the commissioning will be presented.
 
 
MOPS001 Electron-cloud Pinch Dynamics in Presence of Lattice Magnet Fields electron, proton, quadrupole, simulation 586
 
  • G. Franchetti
    GSI, Darmstadt, Germany
  • F. Zimmermann
    CERN, Geneva, Switzerland
 
  The pinch of the electron cloud due to a passing proton bunch was extensively studied in a field free region and in a dipolar magnetic field. For the latter study, a strong field approximation helped to formulate the equations of motion and to understand the complex electron pinch dynamics, which exhibited some similarities with the field-free situation. Here we extend the analysis to the case of electron pinch in quadrupoles and in sextupoles. We discuss the limits of validity for the strong field approximation and we evaluate the relative magnitude of the peak tune shift along the bunch expected for the different fields.     
 
MOPS021 Beam Dynamics of a Compact SC Isochronous Cyclotron - Preliminary Study of Central Region* proton, acceleration, ion, extraction 643
 
  • J.X. Zhang, T.A. Antaya, R.E. Block
    MIT/PSFC, Cambridge, Massachusetts, USA
 
  Funding: Pennsylvania State University ARL S11-07 and N00024-02-D-6604 US Defense Threat Reduction Agency
A compact high field superconducting isochronous cyclotron, Megatron (K250), is designed as a proof-of-principle for a single stage high power proton accelerator. This cyclotron is to accelerate proton to a final energy of 250 MeV with two 45° Dees with a radius ~40 cm. By employing a 20 mA external ECR proton source, the injected proton beam currents at high brightness are foreseen. Using phase selection in the center, a fully magnetized elliptical pole, low energy gain per turn, a precise relation between momentum and radius at large radius are expected. Two goals, a) to use this relationship to develop multi-turn extraction with passive elements only, to achieve a high external proton beam intensity (~1 mA); and b) to see if it is possible to achieve a high extraction efficiency (> 99%) without single turn extraction, with an energy spread |DE/E| ~0.1%. The RF acceleration is on the first harmonic with ωrf=ω0~64 MHz. Superconductor coils will provide a central field of B0 = 4.3 T and a peak hill field of 6.6 T. The general beam dynamics studies will be performed. Precise central field design including space charge effect will be shown in the presentation.
 
 
TUPC089 New Digital NMR System for an Old Analyzing Magnet controls, power-supply, feedback, resonance 1215
 
  • Z. Kormány, I. Ander
    ATOMKI, Debrecen, Hungary
 
  The analyzing magnet of the ATOMKI cyclotron measures the beam energy with high precision and can lower its energy spread to ~5x10-4. The highly stable magnetic field is achieved by a NMR-feedback in the control loop of the power supply. The original analog system was designed and built over 25 years ago applying mainly obsolete, partly nowadays unavailable components. Maintaining and keeping the system running required increasing efforts every year. A new digital system has been developed to replace the old one. Except the high-frequency signal domain (HF oscillator and preamplifier) it performs every processing digitally. Its heart is a mixed-signal microcontroller that generates the signals for the NMR-probe, measures the amplitude and frequency of the oscillation, evaluates the demodulated signal and controls the power supply. A fast NMR-pulse detection algorithm was developed; as a result the embedded program can perform all measuring, detecting and controlling tasks in real-time. A PC connects to the controller, sends commands and displays the received signals and status data. The control software allows easy handling of the complete system with nearly automated operation.  
 
TUPC105 Improvement of Beam Current Monitor with High Tc Current Sensor and SQUID at the RIBF ion, linac, heavy-ion, ECR 1260
 
  • T. Watanabe, N. Fukunishi, O. Kamigaito, M. Kase, Y. Sasaki
    RIKEN Nishina Center, Wako, Japan
 
  A highly sensitive beam current (position) monitor with a high Tc (Critical Temperature) current sensor and a SQUID (Superconducting QUantum Interference Device), that is the HTc-SQUID monitor, has been developed for the RIBF (RI Beam Factory) in RIKEN. The purpose of our work is to measure the DC of high-energy heavy-ion beams nondestructively in such a way that the beams are diagnosed in real time and the beam current extracted from the cyclotron can be recorded without interrupting the beam user's experiments. Both the HTc magnetic shield and the HTc current sensor were dip-coated by thin layer of Bi-Sr-Ca-Cu-O (2223-phase, Tc=106 K) on 99.9 % MgO ceramic substrates. Unlike other existing facilities, all these HTS fabrications are cooled by a low-vibration pulse-tube refrigerator. These technologies enable us to downsize the system. As a result, 1 uA Xe beam intensity (50 MeV/u) was successfully measured with a 100 nA resolution. From last year, aiming at the higher resolution, improvement of the new HTc current sensor with two turn coils has been started. We will report the present status and the measurement results of the HTc-SQUID monitor.  
 
TUPS088 Charge Stripping of Uranium-238 Ion Beam with Low-Z Gas Stripper target, ion, vacuum, acceleration 1746
 
  • H. Imao
    RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama, Japan
  • N. Fukunishi, A. Goto, H. Hasebe, O. Kamigaito, M. Kase, H. Kuboki, H. Okuno, T. Watanabe, Y. Yano, S. Yokouchi
    RIKEN Nishina Center, Wako, Japan
 
  One of the primary goals of the RIKEN RI beam factory is to generate unprecedented high-power uranium beams (up to tens kW), which yield an enormous breakthrough for exploring new domains of the nuclear chart. The development of reliable and efficient charge stripping scheme for such high-power beams is a key unsolved issue, affecting the overall performance of the heavy ion accelerations. A charge stripper using low-Z (low atomic number Z) gas is an important candidate. Because of the suppression of the electron capture process, the high equilibrium mean charge states for the low-Z gas stripper are expected in conjunction with the intrinsic robustness of the gas. There was, however, no direct experimental data of the charge evolution, because of the difficulty in making massive windowless low-Z gas targets. In the present work, the charge evolution of the 238U beams injected at 10.75 MeV/u were investigated using thick hydrogen and helium gas strippers with huge differential pumping system newly developed. In the energy region of interest, near 10 MeV/u, achievable mean charge states around 65+ with the low-Z gas strippers are far superior to those of the medium-Z ones around 55+.  
 
TUPS092 Research of Thermal Deformation on a Compact Cyclotron CYCHU-10 cavity, vacuum, impedance, radio-frequency 1753
 
  • K.F. Liu
    HUST, Wuhan, People's Republic of China
 
  Nowadays, a cyclotron CYCHU-10 used for PET is under construction in Huazhong University of Science and Technology (HUST) due to the growing demands in medical applications. For space-saving and low energy consumption, the CYCHU-10 was designed compactly and accurately, especially for the RF cavity consists of the valley of the magnetic pole and the dee electrodes installed on the vacuum chamber. The RF system will supply a 10kw power and large part of it will transform into thermal energy. This paper will introduce the thermal deformation of the RF cavity and the main vacuum chamber. Meanwhile the finite elements analysis thermal deformation with ANSYS Products will be present. Finally, the cooling system for the RF cavity will be carefully designed due to the result of thermo analysis and the mechanical tolerance demand in the RF system. Keywords- thermal deformation; mechanical tolerance; FEA;RF power.  
 
WEIB05 Collaborative R&D in the Industry of Science neutron, instrumentation, electron, target 1991
 
  • C. Oyon
    ESS, Lund, Sweden
 
  Successful collaborative efforts involve committed partners that have established comforting level of trust. When industry and research laboratories establish such collaborations they create unique ecosystems that have potential to deliver creative solutions. Many times, however, those collaborations face unexpected legal and administrative limitations. The aim of this talk is to identify key limitations and suggest potential solutions that can streamline collaborative projects.  
slides icon Slides WEIB05 [6.937 MB]  
 
WEPC111 Single Particle Tracking Simulation for Compact Cyclotron* simulation, cavity, positron, injection 2274
 
  • H.W. Kim, J.-S. Chai, B.N. Lee, Y.S. Lee, K.R. Nam, H.S. Song
    SKKU, Suwon, Republic of Korea
 
  Funding: Ministry of Education, Science and Technology, Republic of Korea. Department of Energy Science and School of Information and Communication Engineering of SungKyunKwan University.
Low energy compact cyclotrons for Positron emission tomography (PET) are needed for the production of radio-isotope. In the magnet design for those cyclotrons, single particle tracking simulation after the design is important to check the quality of designed magnetic field of the magnet. The study of single particle tracking simulation for cyclotron magnet is shown in this paper. Maximum beam energy of example cyclotron is 9 MeV for proton and pseudo accelerating gap is adapted for the simulation. 3D CAD program CATIA P3 V5 R18 is used for design the magnet and pseudo accelerating gap. All magnetic and electric field calculations had been performed by OPERA-3D TOSCA and the own-made program OPTICY is used for other calculations - phase slip, radial and axial tune.
 
 
WEPO011 Design study of Electromagnet for 13MeV PET Cyclotron extraction, proton, simulation, focusing 2415
 
  • B.N. Lee, J.-S. Chai, H.W. Kim, J.H. Oh, H.S. Song
    SKKU, Suwon, Republic of Korea
 
  Funding: National Research Foundation of Korea
Cyclotron electromagnet for RI production which is used for PET scanning has been designed. Designed pancake-shape electromagnet is an advanced type of KIRAMS-13's electromagnet which has the H-type electromagnet. The AVF structure with hill and valley was used for getting strong axial focusing and producing the energy of proton beam up to 13MeV with a thin stripper foil. To design and analyse the magnet, 3D CAD (CATIA V5)and TOSCA (OPERA-3D)were used, respectively. To reduce the calculation time, routine files were developed which can generate model, mesh and field map automatically in TOSCA modeller and post processor. The beam dynamics program OPTICY is used for calculation of the tunes.
KIRAMS-13* is the cyclotron had been manufactured by KIRAMS.
KIRAMS is short for Korea Institutes of Radiological and Medical Science.
 
 
WEPO028 Design of HTS Sector Magnets for the RCNP New Injector Cyclotron dipole, injection, neutron, cavity 2460
 
  • K. Hatanaka, M. Fukuda, N. Izumi, M. Kibayashi, S. Morinobu, K. Nagayama, T. Saito, H. Tamura, H. Ueda, Y. Yasuda, T. Yorita
    RCNP, Osaka, Japan
  • T. Kawaguchi
    KT Science Ltd., Akashi, Japan
 
  The RCNP cyclotron cascade system consists of K140 AVF cyclotron and K400 ring cyclotron and is providing high quality beams for various experiments. There are increasing demands for high intensity beams and even to improve the quality. In order to increase the physics research opportunities, a new injector cyclotron is recently proposed, which has four separated sector magnets and two accelerating cavities. Sector magnets are designed to use High Temperature Superconducting (HTS) wire. At RCNP we have been developing magnets with HTS wires for a decade. In this paper, we will report recent results of developed HTS magnets and the design of sector magnets for the new injector SSC.  
 
WEPS045 Feasibility Study of a High-gradient Linac for Hadrontherapy linac, ion, accelerating-gradient, cavity 2589
 
  • S. Verdú-Andrés, U. Amaldi, A. Degiovanni
    TERA, Novara, Italy
  • A. Faus-Golfe, S. Verdú-Andrés
    IFIC, Valencia, Spain
  • P.A. Posocco
    CERN, Geneva, Switzerland
 
  Funding: The research leading to this results has been funded by the Seventh Framework Program [FP7/2007-2013] under grant agreement number 215840-2.
Compact, reliable and little consuming accelerators are needed for tumor treatment with hadrons. As solution, TERA proposes CABOTO (CArbon BOoster for Therapy in Oncology), a linac which boosts the energy of carbon ions and H2 molecules coming from a cyclotron. The linac, typically a Side-Coupled Linac (SCL), is divided into several modules. The beam energy can be varied in steps of about 15 MeV/u without using absorbers by acting on the power (amplitude and/or phase) that feeds the different modules of the linac. This work presents the structure design of a 5.7 GHz high repetition rate SCL for a cyclinac, that accelerates carbon ions from 150 up to 400 MeV/u in less than 25 meters. The beam dynamics for this linac and its particular energy selection system is also discussed for different beam energy outputs.
 
 
WEPS069 The C70 ARRONAX and Beam Lines Status simulation, target, proton, quadrupole 2661
 
  • F. Poirier, F. Haddad
    SUBATECH, Nantes, France
  • S. Auduc, S. Girault, C. Huet, E. Mace, F. Poirier
    Cyclotron ARRONAX, Saint-Herblain, France
  • J.L. Delvaux
    IBA, Louvain-la-Neuve, Belgium
 
  Funding: The cyclotron ARRONAX is supported by the Regional Council of Pays de la Loire, local authorities, the French government and the European Union.
The C70 Arronax project is a high intensity (up to 350 ·10-6 A) and high energy (70 MeV) multi-particle cyclotron aiming at R&D on material and radiolysis, and production of rare radioisotopes. The project began its hands-on phase in December 2010, and is now undergoing beam lines’ modification in experimental halls for both present and future experiments. Characterization of the beams at the end of the beam lines is of particular importance to determine the capacity of the cyclotron for the end-line experimental users. A program of beam characterization is being performed based on dedicated diagnostics, e.g. beam profilers, Faraday cups, alumina foils, and also on a series of Geant4 beam simulations. The results of the measurements, along with the simulations, are detailed in this report for proton and alpha particle beams, as well as the future prospects of the characterization program.
 
 
WEPS070 Commissioning Status of Kolkata Superconducting Cyclotron extraction, acceleration, ion, injection 2664
 
  • C. Mallik, R.K. Bhandari
    DAE/VECC, Calcutta, India
 
  After completing the construction of the K~500 superconducting cyclotron at Kolkata, the internal beam acceleration was accomplished in August 2009 and several tests were conducted to confirm the acceleration. Earlier the superconducting magnet using Nb-Ti superconductor with 300 litre liquid helium cryostat and 80 tonne iron was commissioned and field mapped. The radiofrequency system spanning 9-27 MHz and with three independent resonators were integrated into the machine. Some difficulties were experienced with achieving the voltage related to ceramic failures. Finally, ~50 kV on the dees have been achieved with reasonable phase stability between the three dees. The cyclotron uses a 14 GHz external ECR ion source and the beam is injected through 28 metre long injection line. Till date several beams like neon, argon, nitrogen, oxygen etc. have been accelerated mostly in analogous mode and at around 14 MHz frequency and ~32 kG field. Valuable experience has been obtained with various systems. The paper would describe the experience with different subsystems and beam acceleration experience. Presently, beam extraction is being tried and will be achieved shortly.  
 
WEPS071 High Power, High Energy Cyclotrons for Muon Antineutrino Production: the DAEdALUS Project proton, target, beam-losses, extraction 2667
 
  • J.R. Alonso, T. Smidt
    MIT, Cambridge, Massachusetts, USA
 
  Neutrino physics is very much at the forefront of today's research. Large detectors installed in deep underground locations study neutrino masses, CP violation, and oscillations using neutrino-sources including long- and short-baseline beams of neutrinos from muons decaying in flight. DAEdALUS* looks at neutrinos from stopped muons, “Decay At Rest (DAR)” neutrinos. The DAR neutrino spectrum has no electron antineutrinos (nu-e-bar) (pi-minus are absorbed), so a detector with much hydrogen (water-Cherenkov or liquid scintillator) is sensitive to appearance of nu-e-bar’s oscillating from nu-mu-bar via inverse-beta-decay. Oscillations are studied using shorter baselines, less than 20 km reaching the same range as the current and planned high-energy neutrino lines at Fermilab. As the neutrino flux is not variable, nor is the energy, the baseline is varied, plans call for 3 accelerator-based neutrino sources at 1.5, 8 and 20 km with staggered beam-on cycles. Key is cost-effectively generating megawatt beams of 800 MeV protons. A superconducting ring cyclotron is being designed by L. Calabretta and his group**. This revolutionary design could find application in many ADS-related fields.
* DAEdALUS Expression of Interest, arXiv:1006.0260
** Calabretta et al., "A Superconducting Ring Cyclotron to Search for CP Violation in the Neutrino Sector", this conference
 
 
WEPS072 A Superconducting Ring Cyclotron to Search for CP Violation in the Neutrino Sector cavity, extraction, injection, focusing 2670
 
  • L.A.C. Piazza, M.M. Maggiore
    INFN/LNL, Legnaro (PD), Italy
  • L. Calabretta, D. Campo, D. Rifuggiato
    INFN/LNS, Catania, Italy
  • A. Calanna
    CSFNSM, Catania, Italy
 
  Multi Megawatt accelerators are today requested for different use. In particular the experiment DAEdALUS*, recently proposed by MIT scientist to search for CP violation in the neutrino sector, needs three accelerator with energy of about 800 MeV, average power of some MW and duty cycle of 20%. To reduce the cost of the accelerators a cyclotron complex consisting of an injector** and of a booster ring cyclotron has been proposed***. The booster Superconducting Ring Cyclotron, able to accelerate a H2+ molecule beam up to 800 MeV/n and average power higher than 1.6 MW, will be described. Although the average power is 1.6 MW, due to the low duty cycle, the peak power will be 8 MW. The main advantages to accelerate H2+ are a reduction of space charge effects, a simple extraction process, extraction of two beams at the same time from each booster cyclotron to simplify the beam dump. The features of the magnetic sector, of the superconducting coils and the magnetic forces evaluated by the code TOSCA are presented. The isochronous magnetic field, the beam dynamics along the injection and extraction path and during the acceleration are presented, too.
*J.Alonso etal., Novel Search for CP Violation in the Neutrino Sector: DAEdALUS, June2010;e-Print arXiv:1006.0260.
**L.Calabretta, IPAC 2011,this conference.
***L.Calabretta, Cyclotrons 2010, Lanzhou.
 
 
WEPS073 A Low Energy Cyclotron Injector for DAEdALUS Experiment proton, extraction, cavity, space-charge 2673
 
  • L.A.C. Piazza, M.M. Maggiore
    INFN/LNL, Legnaro (PD), Italy
  • L. Calabretta, D. Campo, D. Rifuggiato
    INFN/LNS, Catania, Italy
  • A. Calanna
    CSFNSM, Catania, Italy
 
  Multi Megawatt accelerators are today requested for different use. In particular the experiment DAEdALUS*, recently proposed by MIT scientist to search for CP violation in the neutrino sector, needs three accelerator with energy of about 800 MeV, average power of some MW and duty cycle of 20%. To reduce the cost of the accelerators a cyclotron complex consisting of an injector and of a booster ring cyclotron has been proposed**. The main characteristics of the new kind of a separated sector cyclotron injector able to accelerate a H2+ molecule beam up to 50 MeV/n will be presented. Due to the low duty cycle, the peak current to be accelerated is 5 mA. The problem related to the injection of a H2+ beam, delivered by a compact ion source, and to the space charge effects will be discussed. The main parameters of the magnetic sectors, RF cavities, the isochronous magnetic field and the beam dynamics along the injection and extraction path and during the acceleration will be presented, too.
* J. Alonso et al., “A Novel Search for CP Violation in the Neutrino Sector: DAEdALUS”, June 2010. e-Print: arXiv:1006.0260
** L. Calabretta et al., ICCA, Lanzhou 2010; http://www. JACoW.org.
 
 
WEPS075 Induction Sector Cyclotron for Cluster Ions acceleration, induction, ion, impedance 2679
 
  • K. Takayama
    KEK, Ibaraki, Japan
  • T. Adachi
    Sokendai, Ibaraki, Japan
  • W. Jiang
    Nagaoka University of Technology, Nagaoka, Niigata, Japan
  • H. Tsutsui
    SHI, Tokyo, Japan
 
  A novel scheme of a sector cyclotron to accelerate extremely heavy cluster ions, called Induction Sector Cyclotron (ISC)*, is described. Its key feature is fast induction acceleration. An ion bunch is accelerated and captured with pulse voltages generated by transformers**. The acceleration and confinement in the longitudinal direction can be independently handled. Since the transformers are energized by the switching power supply, in which turning on/off of the switching gate is maneuvered by gate signals digitally manipulated from the circulating beam signal of an ion bunch, acceleration synchronizing with the revolution of ion beam is always guaranteed. A cluster ion beam such as C-60, which so far there has been no way to repeatedly accelerate, can be accelerated from extremely low energy to high energy. The fundamental concept of ISC is introduced and beam dynamical issues such as a life time of cluster ions under strong guide fields and repeatedly exerted pulse voltages in the existence of residual molecules are addressed. In addition, the present status of R&D works on a race track-shape induction accelerating cell will be presented.
* K.Takayama et al., submitted for publication (2011).
** K.Takayama and R.J.Briggs, Chapter 11 and 12 in Induction Accelerators (Springer, 2010).
 
 
WEPS080 Development of High-quality Intense Proton Beam at the RCNP Cyclotron Facility proton, extraction, emittance, cavity 2694
 
  • M. Fukuda, K. Hatanaka, M. Kibayashi, S. Morinobu, K. Nagayama, T. Saito, H. Tamura, H. Ueda, H. Yamamoto, T. Yorita
    RCNP, Osaka, Japan
 
  A 2.45 GHz ECR proton source, equipped with a set of three permanent magnets, was developed to increase the intensity of a high-quality proton beam. A 15 keV proton beam with intensity of 0.6 mA was produced with a proton ratio of more than 80 %. Emittance of the proton beam with intensity of 50 to 100 micro-A in the LEBT system was around 50 pi-mm-mrad. Beam transmission, defined by the ratio of the beam intensity between a Faraday cup placed in the axial injection beam line and an inflector electrode of the AVF cyclotron, was improved from 25 % for a 70 micro-A proton beam to more than 90 % for 30 micro-A obtained by defining the injection beam with a beam slit of iris type. The result indicated that the beam transmission was limited by the acceptance of the axial injection beam line. Emittance of the 65 MeV proton beam accelerated by the K140 AVF cyclotron was a few pi-mm-mrad for beam intensity of several-micro-A. In this paper, development of the intense proton beam and evaluation of the proton beam quality will be mainly reported.  
 
WEPS082 Development of FLNR JINR Heavy Ion Accelerator Complex in the Next Seven Years: New DC-280 Cyclotron Project ion, injection, target, extraction 2700
 
  • G.G. Gulbekyan, S.L. Bogomolov, O.N. Borisov, S.N. Dmitriev, J. Franko, B. Gikal, I.A. Ivanenko, I.V. Kalagin, V.I. Kazacha, N.Yu. Kazarinov, N.F. Osipov, A. Tikhomirov
    JINR, Dubna, Moscow Region, Russia
 
  At present time four isochronous cyclotrons: U-400, U-400M, U-200 and IC-100 are in operation at the JINR FLNR. Total operation time is about 10000 hours per year. The U400M is a primary beam generator and U400 is as postaccelerator in RIB (DRIBs) experiments to produce and accelerate exotic nuclides such as 6He, 8He etc. One of the basic scientific programs which are carried out in FLNR - synthesis of new elements which demands intensive beams of heavy ions. Now U-400 is capable to provide long term experiments on Ca 48 beams with intensity of 1 pμA.In order to improve efficiency of the experiments for the next 7 years it is necessary to obtain the accelerated ion beams with the following parameters. Ion energy 4/8 MeV/n Masses 10/238 Beam intensity (up to A=50) 10 pμA Beam emittance less 30 π mm·mrad These parameters have underlain the project of new cyclotron DC-280.  
 
WEPS083 DC280 Cyclotron Central Region with Independent Flat-Top System acceleration, ion, injection, heavy-ion 2703
 
  • I.A. Ivanenko, B. Gikal, G.G. Gulbekyan, N.Yu. Kazarinov
    JINR, Dubna, Moscow Region, Russia
 
  At the present time, the activities on creation of the new isochronous cyclotron DC280 are carried out at the FLNR, JINR. The cyclotron DC280 is intended for accelerating the wide range of ion beams with A/Z= 4 - 7 to energy W= 4 - 8MeV/u and intensity up to 10pmcA. To achieve high-intensity ion beams the cyclotron is equipped with Flat-Top system. At the cyclotron DC280 the Flat-Top system is physically separated from main resonators. The investigation of the cyclotron centre region with independent Flat-Top is presented. The simulation of the beams acceleration is carried out by means of the computer code CENTR.  
 
WEPS085 Deveopment of the IBA-JINR Cyclotron C235-V3 for Dmitrovgrad Hospital Center of the Proton Therapy proton, extraction, betatron, septum 2706
 
  • E. Syresin, G.A. Karamysheva, M.Y. Kazarinov, S.A. Kostromin, N.A. Morozov, A.G. Olshevsky, V.M. Romanov, E. Samsonov, N.G. Shakun, G. Shirkov, S.G. Shirkov
    JINR, Dubna, Moscow Region, Russia
  • M. Abs, A. Blondin, P. Cahay, Y. Jongen, W.J.G.M. Kleeven, S. Zaremba
    IBA, Louvain-la-Neuve, Belgium
 
  The approval of the Dmitrovgrad project - the first Russian hospital center of the proton therapy was announced in 2010. The JINR-IBA collaboration have developed and constructed the proton cyclotron C235-V3 for this center. We plan to assemble this cyclotron in JINR in 2011 and perform tests with the extracted proton beam in 2012. This cyclotron is an essentially modified version of IBA C235 cyclotron. Modification of the extraction system is aim of new C235-V3 cyclotron. The new extraction system was constructed and tested. The experimentally measured extraction efficiency was improved from 60% for the old system to 77% for the new one. The new field mapping system was developed for the C235-V3 cyclotron. It system consists of the axial field mapping system and an additional system applied for radial field Br measurements. One of the goals of the cyclotron improvement is the modification of the sector spiral angle for reducing of coherent beam losses at acceleration. The coherent beam displacement from the median plane is defined by the vertical betatron tune Qz. An increase of the vertical betatron tune permits to reduce the coherent losses at proton acceleration.  
 
THOAB02 Metal Nano-particle Synthesis by using Proton Beam proton, electron, controls, radiation 2871
 
  • M.H. Jung, K. R. Kim, S.J. Ra
    KAERI, Daejon, Republic of Korea
 
  Funding: This work was conducted as a part of the Proton Engineering Frontier Project supported by the Ministry of Education Science & Technology of Korea Government.
Many scientists have studied metal nano-particles for newly known optical, electronic and chemical properties. The unique properties of nano-particles have a tendency to relate the particle size and shape. Electron beam have been used for the nano-particle synthesizing and many results were published. Study of nano-particles synthesize by using proton beam is still in the early stages however study for gold, silver, platinum and cobalt nano-particle was in progress. 100 MeV proton linear accelerator, which is by Proton Engineering Frontier Project, Korea Atomic Energy Research Institute, is scheduled to be completed by 2012. Study of nano-particle synthesize by using proton beam will become active due to the completion of 100 MeV proton accelerator and it can be mass-produced because of the large current beam. Finally, industrial applications could become possible. The mechanism of metal nano-particles synthesizing by proton beam irradiation was not completely known. In this study, we investigated the changes of size and shape for metal nano-particle depending on the condition of proton beam irradiation, and concentration of additives by TEM and UV/Vis spectrophotometer.
 
slides icon Slides THOAB02 [9.791 MB]  
 
THPPA02 EPS-AG Budker Prize Presentation: Retrospective of 24 years of RIBF Life factory, ion, electron, scattering 2899
 
  • Y. Yano
    RIKEN Nishina Center, Wako, Japan
 
  The speaker will look back on 24 years (from 1987 to now) devoted to the RIBF project.  
slides icon Slides THPPA02 [10.303 MB]  
 
THPS045 Beam Emittance Measurement in the Injection Beam Line for a Cyclotron Accelerator Mass Spectrometer injection, extraction, ion, emittance 3523
 
  • D.G. Kim, H.-C. Bhang
    SNU, Seoul, Republic of Korea
  • J.-W. Kim
    NCC, Korea, Kyonggi, Republic of Korea
 
  Funding: This work was supported by National Research Foundation of Korea (NRF) Grant No. 20110018946, and also by World Class University project of the NRF.
A carbon beam was extracted and measured in the injection beam line built for an accelerator mass spectrometer (AMS) based on a cyclotron. The cyclotron AMS has been designed to realize a compact AMS having a mass resolving power of around 4000 for a negative 14C beam. The beam line is a prototype to ensure the capability to match the beam phase space with the acceptance of the cyclotron. The injection beam line consists of an ion source, Einzel lens, rf buncher, 90 degree dipole magnet and a beam diagnostic box with a slit system. The ion source with a hot filament is a commercial product, and all other elements were designed and built in house. Some measurement results of the beam line components as well as beam emittance will be presented.
 
 
THPS077 Compact Superconducting Synchrocyclotrons at Magnetic Field Level of up to 10 T for Proton and Carbon Therapy proton, ion, synchro-cyclotron, focusing 3610
 
  • A.I. Papash
    MPI-K, Heidelberg, Germany
  • G.A. Karamysheva
    JINR, Dubna, Moscow Region, Russia
  • L.M. Onischenko
    JINR/DLNP, Dubna, Moscow region, Russia
 
  Based on brief analysis of accelerators widely used for proton-ion therapy and patient cure during last 20 years the feasibility and importance of compact superconducting synchrocyclotrons operating at magnetic field level up to 10 T is outlined. The main component of modern commercial facility for proton-ion therapy is an isochronous cyclotron with room temperature or superconducting coils accelerating protons up to 250 MeV as well as synchrotron accelerating carbon ions up to 400 MeV/A. Usually ions are delivered from accelerator into the treatment room by transport lines. Irradiation is done by system of pointed to the patient magnets, collimators, energy degraders which are attached to the rotating Gantry. To greatly reduce price of facility (almost in one order of magnitude) and to simplify operational conditions of hospital personal it is proposed to provide iso-centric rotation of compact superconducting synchrocyclotron around the patient. Main physical and technical parameters are described in the paper.  
 
THPS080 The New Bern Cyclotron Laboratory for Radioisotope Production and Research target, proton, radiation, extraction 3618
 
  • S. Braccini, A. Ereditato
    LHEP, Bern, Switzerland
  • P. Scampoli
    Naples University Federico II, Napoli, Italy
  • K. von Bremen
    SWAN, Bern, Switzerland
 
  A new cyclotron laboratory for radioisotope production and multi-disciplinary research is under construction in Bern and will be operational by the end of 2011. A commercial IBA 18 MeV proton cyclotron, equipped with a specifically conceived 6 m long external beam line, ending in a separate bunker, will provide beams for routine 18-F production as well as for novel detector, radiation biophysics, radioprotection, radiochemistry and radiopharmacy developments. The accelerator is embedded into a complex building which hosts two physics laboratories, four GMP radiochemistry and radiopharmacy laboratories, offices and two floors for patient treatment and clinical research activities. This project is the result of a successful collaboration among the University Hospital in Bern (Inselspital), the University of Bern and private investors, aiming at the constitution of a combined medical and research center able to provide the most cutting-edge technologies in medical imaging and cancer radiation therapy. For this purpose, the establishment of a proton therapy center on the campus of Inselspital is in the phase of advanced study.