Paper |
Title |
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TUPME039 |
System Integration of the Demonstration Siemens Electrostatic Accelerator |
1440 |
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- H. von Jagwitz-Biegnitz
JAI, Oxford, United Kingdom
- P. Beasley, S. Goßmann-Levchuk, O. Heid
Siemens AG, Erlangen, Germany
- D.C. Faircloth
STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
- R.G. Selway
Inspired Engineering Ltd, Climping, United Kingdom
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Siemens has proposed a novel compact DC electrostatic tandem accelerator to produce protons of a few MeV. Siemens is currently building a prototype of the accelerator at the Rutherford Appleton Laboratory. This paper reports on recent progress on the different components of the system as well as the commissioning of the whole machine.
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DOI • |
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※ https://doi.org/10.18429/JACoW-IPAC2014-TUPME039
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THPME073 |
Performance of the Low Energy Beam Transport at the RAL Front End Test Stand |
3406 |
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- J.J. Back
University of Warwick, Coventry, United Kingdom
- D.C. Faircloth, A.P. Letchford
STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
- C. Gabor
STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom
- S.R. Lawrie
STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
- J.K. Pozimski
Imperial College of Science and Technology, Department of Physics, London, United Kingdom
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The Front End Test Stand (FETS) at the Rutherford Appleton Laboratory (RAL) is intended to demonstrate the early stages of acceleration (0-3 MeV) and beam chopping required for high power proton accelerators, including proton drivers for pulsed neutron spallation sources and neutrino factories. A Low Energy Beam Transport (LEBT), consisting of three solenoids and four drift sections, is used to transport the H− beam from the ion source to the Radio Frequency Quadrupole (RFQ). We present the current performance of the LEBT with regards to beam alignment, transmission and focusing into the acceptance of the RFQ.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2014-THPME073
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THPME191 |
Simulation Results of the FETS Laserwire Emittance Scanner |
3729 |
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- K.O. Kruchinin, A. Bosco, S.M. Gibson, P. Karataev
Royal Holloway, University of London, Surrey, United Kingdom
- D.C. Faircloth
STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
- C. Gabor
STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom
- S.R. Lawrie
STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
- J.K. Pozimski
Imperial College of Science and Technology, Department of Physics, London, United Kingdom
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The Front End Test Stand (FETS) at Rutherford Appleton Laboratory (RAL) has been developed to demonstrate a high current (60 mA) H− beam with the energy of 3 MeV that will be required for future proton drivers. At such high power beam machine a non-invasive diagnostics is required. To measure the emittance of the ion beam a laserwire scanner is being developed. A high power laser will scan across the H− ion beam. The H− particles will be neutralized via a photo-detachment process producing a stream of fast neutral hydrogen atoms bearing information about the phase space distribution of the initial H− beam. To design an effective detection system and optimize its parameters a simulation of the processes at the interaction point is required. We present recent simulation results of theц FETS laserwire system. Simulations were performed using measured data of the laser propagation and ion beam distribution, obtained with General Particle Tracer code.
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DOI • |
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※ https://doi.org/10.18429/JACoW-IPAC2014-THPME191
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THPRI027 |
Automated Conditioning System for Siemens Novel Electrostatic Accelerator |
3825 |
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- H. von Jagwitz-Biegnitz
JAI, Oxford, United Kingdom
- P. Beasley, O. Heid, T. Kluge
Siemens AG, Erlangen, Germany
- D.C. Faircloth
STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
- R.G. Selway
Inspired Engineering Ltd, Climping, United Kingdom
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Siemens has proposed a novel compact DC electrostatic tandem accelerator to produce protons of a few MeV and is currently commissioning a prototype at the Rutherford Appleton Laboratory. The geometry of the accelerator involves large surfaces which are exposed to high electric fields and therefore need long procedures for conditioning. An automated system for conditioning has been developed. It reacts quicker to breakdowns than a human operator could do, thus being more effective and also reduces the time spent by research staff on the conditioning.
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DOI • |
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※ https://doi.org/10.18429/JACoW-IPAC2014-THPRI027
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MOPRI014 |
Extracting a High Current Long Pulse Hminus Beam for FETS |
611 |
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- D.C. Faircloth, M. Cannon, S.R. Lawrie, M. Perkins
STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
- C. Gabor
STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom
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The Front End Test Stand (FETS) at the Rutherford Appleton Laboratory (RAL) requires a 60 mA 2 ms 50 Hz Hminus beam. A Penning Surface Plasma Source is used to produce the beam. This paper gives the latest results obtained using a new 25 kV long pulse extraction power supply designed and built at RAL. Power supply performance, beam current and emittance are detailed.
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DOI • |
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※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI014
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MOPRI015 |
Installing the VESPA H− Ion Source Test Stand at RAL |
614 |
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- S.R. Lawrie, D.C. Faircloth, A.P. Letchford, M. Perkins, M. Whitehead, T. Wood
STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
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A Penning-type negative hydrogen (H) ion source has been used reliably on the ISIS pulsed spallation neutron and muon facility at the Rutherford Appleton Laboratory (RAL) in the UK for almost 30 years. However a detailed study of the ion source plasma and extraction has never been undertaken. If these properties were known, the beam emittance and losses due to collimation could be reduced, and the lifetime increased. This paper summarises the progress made on installing a Vessel for Extraction and Source Plasma Analyses (VESPA) to fill the knowledge gap.
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DOI • |
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※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI015
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