Author: Poirier, F.
Paper Title Page
TUP006 The Injection and Chopper-Based System at Arronax C70XP Cyclotron 159
  • F. Poirier, F. Bulteau-harel, T. Durand, X. Goiziou, C. Koumeir, A. Sengar, H. Trichet
    Cyclotron ARRONAX, Saint-Herblain, France
  • G. Blain, M. Fattahi, F. Haddad, J. Vandenborre
    SUBATECH, Nantes, France
  • S. Chiavassa, G. Delpon
    ICO, Saint - Herblain, France
  • F. Poirier
    CNRS - DR17, RENNES, France
  Funding: This work has been, in part, supported by grants from the French National Agency for Research, Arronax-Plus n°ANR-11-EQPX-0004, IRON n°ANR-11-LABX-18-01 and Next n°ANR-16-IDEX-0007.
The multi-particle cyclotron of the Arronax Public Interest Group (GIP) is used to perform irradiation up to hundreds of µA on various experiments and targets. To support low and high average intensity usage and adapt the beam time structure required for high peak intensity operation and experiments such as pulsed experiments studies, it has been devised a pulsing system in the injection of the cyclotron. This system combines the use of a chopper, low frequency switch, and a control system based on the new extended EPICS network. This paper details the pulsing system adopted at Arronax, updates and results for various intensity experimental studies performed with alpha and proton beams. Updated work on the simulation of the injection is also shown, specifically towards high intensity future irradiation.
DOI • reference for this paper ※  
About • paper received ※ 15 September 2019       paper accepted ※ 25 September 2019       issue date ※ 20 June 2020  
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THB04 Development of a Transparent Profiler Based on Secondary Electrons Emission for Charged Particle Beams 302
  • C. Thiebaux, Y. Geerebaert, F. Magniette, P. Manigot, M. Verderi
    LLR, Palaiseau, France
  • G. Blain, F. Haddad, N. Michel, N. Servagent, T. Sounalet
    SUBATECH, Nantes, France
  • B. Boyer, É. Delagnes, F.T. Gebreyohannes, O. Gevin
    CEA-IRFU, Gif-sur-Yvette, France
  • F. Haddad, C. Koumeir, F. Poirier
    Cyclotron ARRONAX, Saint-Herblain, France
  Funding: This study is supported by three programs of the Agence Nationale de la Recherche, ANR-17-CE31-0015, ANR- 11-EQPX-0004 and the LABEX P2IO.
The PEPITES project* aims at realizing an operational prototype of an ultra-thin, radiation-resistant profiler able to permanently operate on mid-energy (O(100 MeV)) charged particle accelerators. PEPITES uses secondary electron emission (SEE) for the signal because it requires only a minimal thickness of material (10 nm); very linear, it also offers a great dynamic. The lateral beam profile is sampled using segmented electrodes, constructed by thin film methods. Gold strips, as thin as the electrical conductivity allows (~ 50 nm), are deposited on an as thin as possible insulating substrate. When crossing the gold, the beam ejects the electrons by SEE, the current thus formed in each strip allows the sampling. The technique was validated at ARRONAX with 68 MeV proton beams for intensities from 100 fA to 10 nA. SEE is characterized up to 100 nA at ARRONAX and medical energies at CPO**. Electrodes were subjected to doses of up to 109 Gy without showing significant degradation. A demonstrator with dedicated electronics (CEA) will be installed at ARRONAX and used routinely. The performances of the system and its behavior over time will thus be characterized.
*LLR, ARRONAX cyclotron and CEA
**Orsay Protontherapy Center (Institut Curie)
slides icon Slides THB04 [16.785 MB]  
DOI • reference for this paper ※  
About • paper received ※ 13 September 2019       paper accepted ※ 26 September 2019       issue date ※ 20 June 2020  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)