04 Hadron Accelerators
T01 Proton and Ion Sources
Paper Title Page
TUPAF016 Increase of IPHI Beam Power at CEA Saclay 694
  • F. Senée, F. Benedetti, E. Giner-Demange, A. Gomes, M. Oublaid
    CEA/DRF/IRFU, Gif-sur-Yvette, France
  • P. Ausset, M. Ben Abdillah, C. Joly
    IPN, Orsay, France
  • F. Belloni, B. Bolzon, N. Chauvin, M. Desmons, Y. Gauthier, C. Marchand, J. Marroncle, T. Papaevangelou, G. Perreu, O. Piquet, B. Pottin, Y. Sauce, J. Schwindling, L. Segui, O. Tuske, D. Uriot
    CEA/IRFU, Gif-sur-Yvette, France
  • F. Harrault, R. Touzery
    CEA/DSM/IRFU, France
  For the first time, in April 2016, the SILHI source produced a proton beam for IPHI RFQ. Due to several technical difficulties on the RFQ water cooling skid, a short RF power pulse (100 µs at the beginning until few hundred microseconds) is injected into the RFQ accelerates the high intensity proton beam up to 3 MeV. The repetition rate is tuned between 1 and 5 Hz. Under these conditions, the beam power after the RFQ is lower than 100 W. At the end of 2017, the 352 MHz RFQ conditioning has been completed (with the same duty cycle) and the proton beam has been accelerated. The increase of the beam power is expected to continue in 2018 in order to reach several kilowatts by the end of the year. In addition, two Ionization beam Profile Monitors (IPM) developed for ESS have been tested on the deviated beam line with a very low duty cycle. The IPHI facility should demonstrate the possibility to produce neutrons with a flexible compact accelerator in the framework of the SONATE project. This paper presents the status of the IPHI project in April 2018.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-TUPAF016  
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TUPAL011 Low Power Test and Tuning of the LEAF RFQ 1028
  • L. Lu, T. He, Y. He, W. Ma, L.B. Shi, L.P. Sun, C.C. Xing, X.B. Xu, L. Yang, H.W. Zhao
    IMP/CAS, Lanzhou, People's Republic of China
  A continuous wave (CW) four-vane radio frequency quadrupole (RFQ) accelerator is under construction for the Low Energy Accelerator Facility (LEAF) at Institute of Modern Physics (IMP). The 5.96 m RFQ will operate with the capability of accelerating all ion species from proton to uranium from 14 keV/u up to 500 keV/u. In this paper, the low power test and tuning results of the RFQ accelerator, including the test of the separate sections and the whole cavity, will be presented. After the final tuning, the relative error of the quadrupole field is within 2% and the admixture of the dipole modes are below 4% of the quadrupole mode.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-TUPAL011  
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TUPAL057 Preliminary Experiments in Caesium Delivery and Gettering on the ISIS Vespa Source 1144
  • T. M. Sarmento, R.E. Abel, D.C. Faircloth, S.R. Lawrie, J.H. Macgregor, M. Whitehead, T. Wood
    STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
  Caesium capture by graphite at various temperatures 20- 300°C in the VESPA ion source test stand was explored in a preliminary experiment. An accompanying experiment was set up to evaluate the control of caesium boiler delivery in the various ISIS penning sources. Results indicate Cs flux fluctuates at constant settings, which must be accounted for to interpret graphite gettering results. Future studies to identify the cause of fluctuations are considered, and a more rigorous experiment to study the use of graphite is introduced.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-TUPAL057  
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TUPAL059 Commissioning of Shanghai Advance Proton Therapy 1151
  • M.Z. Zhang, D.M. Li, K. Wang, Q.L. Zhang, Z.T. Zhao
    SINAP, Shanghai, People's Republic of China
  • X.C. Xie
    Shanghai APACTRON Particle Equipment Company Limited, Shanghai, People's Republic of China
  Shanghai advance proton therapy (SAPT) is a dedicate facility for cancer treatment. The commissioning of the accelerator started at the end of April 2017, and the proton beam has been already transported to the treatment room. This paper shows the commissioning results of synchrotron and transport line.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-TUPAL059  
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TUPAL061 Target and Ion Source Development for Better Beams in the ARIEL Era 1155
  • C. Babcock, T. Day Goodacre, A. Gottberg
    TRIUMF, Vancouver, Canada
  • A. Gottberg
    Victoria University, Victoria, B.C., Canada
  Any ISOL facility pushing the boundaries of nuclear physics must be able to provide cutting-edge ion beams to its users - beams of isotopes far from stability, with few contaminants, that may be difficult to extract from an ISOL target. The development of these pure, exotic beams must be supported by continuing research and development on targets and ion sources. In the ARIEL era, new target/ion source geometries and operational modes will provide new opportunities which can only be exploited with time for development. To prioritize this, TRIUMF proposes to build a dedicated test stand for target and ion source research which will model the critical features of the new ARIEL target stations. This stand will provide a testing ground for methods of increasing efficiency and selectivity, such as investigations of new surface ion source [1,2] and FEBIAD ion source [3] designs. In addition, this will provide a development environment for new beams, either from new target materials, or through techniques such as extracting molecular beams. In order to maximize the gain from these investigations in on-line operation, the ion optical properties of the final beam will be investigated concurrently.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-TUPAL061  
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