Keyword: operation
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MOA02 Operation Status and Upgrading of Cyclotron in Lanzhou linac, experiment, heavy-ion, injection 5
 
  • W.Q. Yang, L.J. Mao, L.T. Sun, J.W. Xia, J.C. Yang
    IMP/CAS, Lanzhou, People’s Republic of China
 
  IMP operates the Heavy Ion Research Facility in Lan-zhou (HIRFL), which consists of the Sector Focusing Cyclotron, the Separated Sector Cyclotron, the Cooler Storage Ring, and a number of experimental terminals. The HIRFL is mainly used in fundamental research of nuclear physics, atomic physics, irradiation material and biology, and accelerator technology. This paper mainly introduces the operation status and upgrading of HIRFL. So far, HIRFL achieves all-ion acceleration from proton to uranium. In addition, in order to improve the efficiency of HIRFL, we will build two new Linac injectors for SSC and CSR, respectively.  
slides icon Slides MOA02 [14.507 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-MOA02  
About • paper received ※ 14 September 2019       paper accepted ※ 24 September 2019       issue date ※ 20 June 2020  
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MOP019 The Results of Magnetic Field Formation and Commissioning of Heavy-Ion Isochronous Cyclotron DC280 cyclotron, experiment, ECR, MMI 70
 
  • I.A. Ivanenko, G.G. Gulbekyan, G.N. Ivanov, I.V. Kalagin, V.A. Semin
    JINR, Dubna, Moscow Region, Russia
 
  The DC280 cyclotron is the new accelerator of FLNR Super Heavy Elements Factory. It was commissioned in the beginning of 2019. DC280 is intended for production of high intensity, up to 10 pmkA, beams of heavy ions with mass to charge ratio A/Z= 4 - 7. The wide range of accelerated ions from helium to uranium and smooth variation of extracted beam energy in the range W= 4 - 8 MeV/n are provided by varying of level of main magnetic field from 0.64 T till 1.32 T. The DC280 magnetic field was formed in a good conformity with results of computer modeling. In spite of commissioning of cyclotron still is in progress, the first experiments gave the intensity 1.35 pmkA of 84Kr14+ and 10 pmkA of 12C2+. At the present work the results of calculations, magnetic field measurements and first experiments are presented.  
poster icon Poster MOP019 [1.368 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-MOP019  
About • paper received ※ 12 September 2019       paper accepted ※ 26 September 2019       issue date ※ 20 June 2020  
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MOC03 Upgrade of the PSI Injector 2 Cyclotron cyclotron, cavity, LLRF, pick-up 123
 
  • M. Schneider, J. Grillenberger
    PSI, Villigen PSI, Switzerland
 
  The high intensity proton accelerator facility at PSI is capable of providing beam currents of up to 2.4 mA at a kinetic energy of 590 MeV. PSI is following an upgrade plan to further increase the beam power and to further minimize proton losses. Up to now, this has mainly been achieved by the installation of high gradient copper resonators in the Ring cyclotron and the installation of more powerful RF-amplifiers. Currently, PSI follows a similar approach for the Injector 2 cyclotron providing 72 MeV protons for the injection into the 590 MeV Ring cyclotron. In order to increase the turn separation in the injector cyclotron which results in lower relative beam losses, the two 150 MHz resonators operated in accelerating mode are replaced with two 50 MHz Aluminum resonators providing higher acceleration voltage. This paper describes the status of the upgrade, i.e., the replacement of the first resonator and related hardware.  
slides icon Slides MOC03 [10.052 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-MOC03  
About • paper received ※ 13 September 2019       paper accepted ※ 26 September 2019       issue date ※ 20 June 2020  
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TUB04 On-Line Dynamic Beam Intensity Control in a Proton Therapy Cyclotron controls, cyclotron, proton, power-supply 148
 
  • S. Psoroulas, P. Fernandez Carmona, D. Meer, D.C. Weber
    PSI, Villigen PSI, Switzerland
  • D.C. Weber
    KRO, Bern, Switzerland
  • D.C. Weber
    University of Zurich, University Hospital, Zurich, Switzerland
 
  Modern proton therapy facilities use the pencil beam scanning (PBS) technique for the treatment of tumours: the beam is scanned through the tumour volume sequentially, i.e. stopping the beam at each position in the tumour for the amount of time necessary to deliver the prescribed dose for that position, and then moving to the next position (dose-driven delivery). This technique is robust against fluctuations in the beam current. Modern cyclotrons however offer very stable beam currents, and allow regulating the beam intensity online to match the requested beam intensity profile as a function of time (’time-driven’ delivery). To realise time-driven delivery at the COMET cyclotron at PSI*, we have designed a beam intensity controller** which is able to partially compensate for the non-linearity and the delay introduced by the physical limitations of the beam line elements and its drivers; this is particularly important when trying to achieve a very fast modulation of the beam, as required by the clinical plans. Experimental results have shown good performance for most current clinical scenarios, though we are investigating more advanced solutions for higher dose rates scenarios.
(*) Klimpki, G., et al. (2018). PMB, 63(14), 145006
(**) Fernandez Carmona, P., et al., (2018) Proceedings of PCaPAC2018, FRCC2
 
slides icon Slides TUB04 [10.992 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUB04  
About • paper received ※ 14 September 2019       paper accepted ※ 26 September 2019       issue date ※ 20 June 2020  
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TUP007 Operational Experience in the Treatment of Ocular Melanomas with a New Digital Low-level RF Control System controls, LLRF, cyclotron, resonance 162
 
  • T. Fanselow, J. Bundesmann, A. Denker, U. Hiller
    HZB, Berlin, Germany
  • J.K. Abraham, J.L. Conradie, W. Duckitt
    iThemba LABS, Somerset West, South Africa
 
  Ocular melanomas have been treated for the last 20 years at the Helmholtz-Zentrum Berlin in collaboration with the Charité Universitätsmedizin Berlin. However, parts of the initial control system electronics date back to the 1970s, when the machine was installed. Facing a critical shortage of legacy and obsolete components and with the down-time due to failures in the electronics on the increase, a decision was made to install the digital low-level RF control system, developed by iThemba LABS, on our K=132 cyclotron. A short description of the installation and commissioning process, which occurred in April 2017, and the experiences of the first 2 years of operation with the new digital low-level RF control system is presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUP007  
About • paper received ※ 14 September 2019       paper accepted ※ 25 September 2019       issue date ※ 20 June 2020  
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TUP008 The Cyclotron TR-FLEX at the Center for Radiopharmaceutical Cancer Research at Helmholtz-Zentrum Dresden-Rossendorf target, cyclotron, extraction, proton 166
 
  • M. Kreller, T. Knieß
    HZDR, Dresden, Germany
  • S. Preusche
    Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
 
  The new Center for Radiopharmaceutical Cancer Research was established at Helmholtz-Zentrum Dresden-Rossendorf e. V. to centralize the main units: a high current proton cyclotron, a radiopharmaceutical production – GMP unit including quality control, laboratories for PET-radiochemistry, chemical and biochemical laboratories and laboratories for small animal imaging. The cyclotron TR-Flex was put into operation in 2017 and it is equipped with two extraction ports. Both are movable to adjust the proton energy in the range from 15 MeV up to 30 MeV. One extraction port is coupled with a combination magnet and two beam lines. A [123I]I-gas target station is installed at the first beam line and a four-port target selector at beamline two and at the second extraction port. Two [18F]F-water targets, a [18F]F2-gas target, a [11C]CH4-gas target, a [11C]CO2-gas target, a 30° and a 90° solid state target are mounted on the target selectors. In our contribution we report our experience of the new cyclotron during the first two operation years. Typical beam parameters and the reliability of the TR-FLEX are presented. Furthermore we describe the new home-built Radionuclide Distribution System.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUP008  
About • paper received ※ 18 September 2019       paper accepted ※ 26 September 2019       issue date ※ 20 June 2020  
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TUP016 New Centering Beam Monitor for High Power Proton Beam Rotating Target target, experiment, proton, cyclotron 189
 
  • P.-A. Duperrex, P. Baumann, S. Joray, D.C. Kiselev, D. Laube, D. Reggiani
    PSI, Villigen PSI, Switzerland
 
  The high intensity proton accelerator (HIPA) at the Paul Scherrer Institut (PSI) delivers 590 MeV c.w. proton beam with currents of up to 2.4 mA, i.e. 1.4 MW beam power, For experiments of nuclear and material research the beam is directed to the 4 or 6 cm graphite 1 Hz rotating target (Target E). Centring the beam on the target is an important task for the operation and has safety issues in case of beam misalignment. Transmission monitoring has been the standard method to optimize the beam position on the target, though not very sensitive. A new method is currently being tested that provides a more sensitive off-axis detection. It is based on the detection of beam inten-sity modulation from the milled grooves at the target edge. This paper presents the concept and preliminary experimental results that can be obtained with this method.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUP016  
About • paper received ※ 15 September 2019       paper accepted ※ 26 September 2019       issue date ※ 20 June 2020  
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TUC01 Review and Current Status of the 70 MeV High Intensity Proton Cyclotron at Legnaro cyclotron, target, proton, MMI 248
 
  • M. Maggiore, P. Antonini, A. Lombardi, L. Pranovi
    INFN/LNL, Legnaro (PD), Italy
  • Z. Filipovski
    UI PET, Skopje, Republic of North Macedonia
 
  In 2017 the new cyclotron has been successfully commissioned and started the operation at Laboratori Nazionali di Legnaro (LNL) of INFN . The cyclotron is the proton driver foreseen for the Selective Production of Exotic Species (SPES) project, providing the high power beam for radioactive ion beams (RIBs) production by the ISOL technique. The SPES facility is today under construction and first low energy RIBs are expected to be available on 2021. The facility has been designed in order to exploit the versatility of the cyclotron in terms of wide range of energy and beam current extracted: 35-70 MeV energy and 20 nA - 500 µA of average current. Moreover, the possibility to extract at the same time two proton beams allows to share these both for experimental physics session and applications. In particular, at LNL a collaboration between private company and public institution will lead to a profitable synergy in R&D of new radioisotopes and the related production. In the session the results of the commissioning and the operation of cyclotron will be presented as well as the description of the SPES facility together with its potentiality in nuclear physics research and applications.  
slides icon Slides TUC01 [14.176 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUC01  
About • paper received ※ 15 September 2019       paper accepted ※ 26 September 2019       issue date ※ 20 June 2020  
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TUC03 AGOR Status Report radiation, cyclotron, experiment, controls 256
 
  • B.N. Jones, S. Brandenburg, M.-J. van Goethem
    KVI-CART, Groningen, The Netherlands
 
  Funding: Work supported by EU Horizon 2020 (contract nrs. 654002; 730983) and the Dutch Cancer Foundation KWF project 11766)
TThe operations of the superconducting cyclotron AG-OR over the past years will be reviewed. Reliability issues encountered after nearly 25 years of operation and mitigation measures to warrant reliable operation for the coming decade will be discussed. The research performed with AGOR has significantly shifted from fundamental physics to radiation biology and medical radiation physics, both in collaboration with the Groningen Proton Therapy Center, and radiation hardness studies. The radiation biology research will be substantially expanded in the coming years with a new beam line for image guided preclinical research. For this research new dose delivery modalities including scanning, spatial fractionation and very high dose rates are developed. In addition a new program has been started on the production of exotic nuclei, for which a new superconducting solenoid fragment separator will be developed. For the radiation hardness testing a cocktail beam at 30 MeV/amu with several ion species up to Xe has been developed and is now routinely delivered for experiments. A cocktail at 15 MeV/amu up to Bi is under development.
 
slides icon Slides TUC03 [4.632 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUC03  
About • paper received ※ 14 September 2019       paper accepted ※ 26 September 2019       issue date ※ 20 June 2020  
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TUC04 Status of the Cyclotron Facility at Research Center for Nuclear Physics cyclotron, proton, ion-source, neutron 259
 
  • H. Kanda, M. Fukuda, S. Hara, T. Hara, K. Hatanaka, K. Kamakura, H.W. Koay, S. Morinobu, Y. Morita, M. Nakao, K. Omoto, T. Saito, K. Takeda, H. Tamura, Y. Yasuda, T. Yorita
    RCNP, Osaka, Japan
 
  Research Center for Nuclear Physics (RCNP), Osaka University operates a K140 AVF cyclotron and a K400 ring cyclotron and promotes the nuclear physics, accelerator physics, material science, nuclear medicine and related scientific fields. In the recent years, we operated the CAGRA campaign and Grand-RAIDEN+CAGRA campaign experiments* for taking advantage of the low background environment of the RCNP experimental halls and the high quality beams. We have successfully completed the low energy muon beam line, MuSIC**. We have been carrying out a program of the upgrade of the K140 AVF cyclotron which continued working since 1973. We aim at 10 times higher intensity for the proton beam than before and further stability of the operation. We also carried out the upgrade of the cyclotron building and related facilities to handle beams with higher intensity. From 2019, the RCNP started the Research Center of Subatomic Sciences as the International Joint Usage/Research Center in Japan. These upgrades are the most important programs to extend the function of the newly established center.
*E. Ideguchi, SSNET’17 - Abstracts and slides, (p. 1990). France, (2017).
**D. Tomono, PoS(NuFact2017) 111, (2018).
 
slides icon Slides TUC04 [8.696 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUC04  
About • paper received ※ 15 September 2019       paper accepted ※ 26 September 2019       issue date ※ 20 June 2020  
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THC04 3D Printing for High Vacuum Applications vacuum, laser, experiment, background 317
 
  • C.R. Wolf
    HS Coburg, Coburg, Germany
  • F.B. Beck, L. Franz, V.M. Neumaier
    Ernes, Coburg, Germany
 
  This thesis deals with the manufacture of parts made by 3D printing for high vacuum application. Different components are printed and examined for their vacuum suitability. As shown furthermore, conventionally made standard components can be welded vacuum-tightly to 3D-printed parts, which enables cost-effective production of more complex components, such as a vacuum chamber. In addition, functional components can already be realized during the manufacturing process. The integration of a system of flow channels directly into the wall of a vacuum-chamber is just one example. Thus, such a vacuum-chamber can be heated during evacuation and effectively cooled in later operation.  
slides icon Slides THC04 [3.310 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-THC04  
About • paper received ※ 29 August 2019       paper accepted ※ 26 September 2019       issue date ※ 20 June 2020  
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