# All CERN Accelerators documents

Последние добавления:
2019-05-23
13:43
 Motorized linear stages for the UA9 experiment / Natochii, Andrii (Centre National de la Recherche Scientifique (FR)) ; Gavrikov, Yury (NRC Kurchatov Institute PNPI (RU)) ; Garattini, Marco (Imperial College (GB)) ; Scandale, Walter (CERN) In this paper, we describe the mechanical structure of the motorized linear stages that are used for plas- tic scintillator detector placement in a high-energy particle beam during the dedicated UA9 collaboration measurements at CERN, including a detailed overview of the software. [...] CERN-EN-2019-001. - 2019. - 15 p. Full text

2019-05-23
06:31
 Integrated modeling of the beam formation and extraction in the Linac4 hydrogen negative ion source / Nishioka, S (Keio U.) ; Abe, S (Keio U.) ; Mattei, S (CERN) ; Lallement, J B (CERN) ; Kalvas, T (Jyvaskyla U.) ; Hatayama, A (Keio U.) ; Lettry, J (CERN) In order to make the predictive simulation tools for the extracted beam current and emittance in the Linac4 H− ion source, we have launched the development of the integrated model for the H− ion beam formation and extraction process. More specifically, our 3D KEIO-Beam Formation and eXtraction (3D KEIO-BFX) is coupled with the NINJA, IBSIMU and TRAVEL. [...] 2018 - 3 p. - Published in : AIP Conf. Proc. 2011 (2018) 080017 In : International Conference on Ion Sources, CERN Geneva, Geneva, Switzerland, 15 - 20 Oct 2017, pp.080017

2019-05-23
06:31
 Charge breeding of CO$^{+}$ beams at REX-ISOLDE / Pitters, J (CERN) ; Breitenfeldt, M (CERN) ; Wenander, F (CERN) The β+ emitter 11C is a possible treatment ion for hadron therapy owing to its excellent properties in PET imaging, which could be used for range verification during the treatment. A charge breeder is required to transform the molecular CO+ beam, coming from an ISOL-production stage (Isotope Separation OnLine), to Cn+ and to match it with the acceptance of the medical accelerator. [...] 2018 - 3 p. - Published in : AIP Conf. Proc. 2011 (2018) 070012 In : International Conference on Ion Sources, CERN Geneva, Geneva, Switzerland, 15 - 20 Oct 2017, pp.070012

2019-05-23
06:31
 Plasma impedance prediction model and impedance matching by frequency tuning in radio frequency negative ion sources / Kobayashi, W (Keio U.) ; Nishida, K (Keio U.) ; Mattei, S (CERN) ; Lettry, J (CERN) ; Hatayama, A (Keio U.) A radio frequency (RF) driven type hydrogen (H−) source is used as an injector of Linac4. The power transfer efficiency between the RF generator and the ion source plasma is one of the important parameters that determines the extracted H− beam current. [...] 2018 - 3 p. - Published in : AIP Conf. Proc. 2011 (2018) 050019 In : International Conference on Ion Sources, CERN Geneva, Geneva, Switzerland, 15 - 20 Oct 2017, pp.050019

2019-05-23
06:31
 Numerical analysis of ion dynamics in RF ICP discharge / Nishida, K (Keio U.) ; Mattei, S (CERN) ; Kobayashi, W (Keio U.) ; Lettry, J (CERN) ; Hatayama, A (Keio U.) We have worked on the development of a particle-based numerical model of a hydrogen Radio Frequency (RF) Inductively Coupled Plasma (ICP). In the previous work, it has been shown that the model is able to simulate the E-to-H discharge mode transition, which is one of the distinct features of RF ICP. [...] 2018 - 3 p. - Published in : AIP Conf. Proc. 2011 (2018) 050014 In : International Conference on Ion Sources, CERN Geneva, Geneva, Switzerland, 15 - 20 Oct 2017, pp.050014

2019-05-23
06:31
 Study of the micro oven for the Linac3 heavy ion source / Kövener, T (CERN ; U. Hamburg (main)) ; Fichera, C (CERN) ; Küchler, D (CERN) ; Toivanen, V A (GANIL) The GTS-LHC Electron Cyclotron Resonance (ECR) ion source at CERN provides heavy ion beams for the chain of accelerators from Linac3 up to the Large Hadron Collider. For the lead ion production the solid material is evaporated in internal ovens. [...] 2018 - 3 p. - Published in : AIP Conf. Proc. 2011 (2018) 040013 In : International Conference on Ion Sources, CERN Geneva, Geneva, Switzerland, 15 - 20 Oct 2017, pp.040013

2019-05-23
06:31
 MEDeGUN commissioning results / Breitenfeldt, M (CERN) ; di Lorenzo, F (CERN) ; Pikin, A (Brookhaven Natl. Lab.) ; Pitters, J (CERN) ; Wenander, F (CERN) MEDeGUN [1] is an electron gun to be used in an Electron Beam Ion Source (EBIS) designed to serve as C6+ source for LINAC-based 2nd generation hadron therapy facilities [2]. The latter require short pulses of at least 1*108 particles at a repetition rate of 400 Hz, which exceeds the possibilities of currently used electron cyclotron resonance ion sources (ECRIS) and EBISes. [...] 2018 - 3 p. - Published in : AIP Conf. Proc. 2011 (2018) 040004 In : International Conference on Ion Sources, CERN Geneva, Geneva, Switzerland, 15 - 20 Oct 2017, pp.040004

2019-05-22
09:07
 Accelerators in the 21st Century / Zimmermann, Frank (CERN) More than 30,000 accelerators are in operation worldwide. Of these less than 1% are devoted to basic research. [...] 2018 - 11 p. - Published in : EPJ Web Conf. 182 (2018) 02134 Fulltext: PDF; In : 6th International Conference on New Frontiers in Physics, Kolymbari, Krete, Greece, 17 - 29 Aug 2017, pp.02134

2019-05-22
09:07
 Linac4 source extraction and low energy beam transport study / Noll, D (CERN) ; Bencini, V (CERN) ; Lallement, J B (CERN) ; Lettry, J (CERN) ; Lombardi, A M (CERN) ; Lorenzo, F Di (CERN) ; Mattei, S (CERN) ; O'Neil, M (CERN) In the framework of the LHC Injector Upgrade program, a new normal conducting linac (Linac4) operating at the frequency of 352 MHz has been recently commissioned to the ﬁnal energy of 160 MeV. Linac4 will be connected to the LHC injector chain in 2020 and it is expected to provide a 40 mA, 400 µs H− beam for charge-exchange injection into the Proton Synchrotron Booster. [...] 2018 - 3 p. - Published in : AIP Conf. Proc. 2011 (2018) 080026 In : International Conference on Ion Sources, CERN Geneva, Geneva, Switzerland, 15 - 20 Oct 2017, pp.080026

2019-05-22
09:07
 Analysis of H− extraction in the Linac4 negative ion source by 2.5D particle simulation / Abe, S (Keio U.) ; Nishioka, S (Keio U.) ; Mattei, S (CERN) ; Miyamoto, K (Naruto U. of Education) ; Hatayama, A (Keio U.) ; Lettry, J (CERN) The purpose of this study is to investigate the extraction mechanisms of the H− ions in the Linac4 negative ion source by using an improved two-dimensional in real space and three-dimensional in velocity space Particle in Cell (2D3V-PIC) model. In this model, the following collision processes of the surface produced H− (Hsp−) ions have been introduced and the effects of the collisions on H− extraction have been analyzed: elastic (Hsp− - H2) and charge exchange (Hsp− - H). [...] 2018 - 3 p. - Published in : AIP Conf. Proc. 2011 (2018) 080020 In : International Conference on Ion Sources, CERN Geneva, Geneva, Switzerland, 15 - 20 Oct 2017, pp.080020