IPAC2017 - List of Authors (Edgecock, T.R.)

Paper	Title	Page
THPIK108	Bead Pull Measurements of the FETS RFQ at RAL	4349
	W. Promdee, T.R. Edgecock IIAA, Huddersfield, United Kingdom G.E. Boorman Royal Holloway, University of London, Surrey, United Kingdom G.E. Boorman JAI, Egham, Surrey, United Kingdom T.R. Edgecock, J.K. Pozimski STFC/RAL, Chilton, Didcot, Oxon, United Kingdom A.P. Letchford STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom J.K. Pozimski Imperial College of Science and Technology, Department of Physics, London, United Kingdom
	A Radio Frequency Quadrupole (RFQ) is a part of the Front End Test Stand (FETS) at the Rutherford Appleton Laboratory (RAL), Didcot, UK. The aim of the FETS project is to produce a 60 mA H⁻ beam at 3 MeV. The RFQ is a four-vane type with 4 modules, each of 1 m length, and is designed to accelerate the beam from 65 keV to 3 MeV at 324 MHz. A bead pull system has been designed to measure the field along the RFQ. This will be used in conjunction with 64 tuners to produce a uniform field. In order to optimise the tuning procedure, a model of the RFQ has been creat-ed in COMSOL Multiphysics. This study shows the results from the bead pull measurements and the tuning studies.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPIK108
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TUPVA133	Thin Internal Target Studies in a Compact FFAG	2411
	D. Bruton, R.J. Barlow, T.R. Edgecock University of Huddersfield, Huddersfield, United Kingdom C. Johnstone PAC, Batavia, Illinois, USA
	The production of radioisotopes using a thin internal target and recycled beam within a compact FFAG design has been studied. Radioisotopes have a wide range of uses in medicine, and recent disruption to the supply chain has seen a renewed effort to find alternative isotopes and production methods. The FFAG design features separate sector magnets with non-scaling, non-linear field gradients which are optimized with magnet geometry to achieve isochronisity at the level of 0.3%, sufficient for Continuous Wave (CW) operation. Simulations have demonstrated that beam currents of up to 10mA can comfortably be achieved with this design. To further improve production efficiency a thin internal target, where the beam passes through the target and is recirculated, may be used. This setup ensures that production takes place within a narrow energy range, potentially increasing production rates and reducing impurities.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPVA133
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THPIK109	The RF Distribution System for the ESS	4352
	T.R. Edgecock, N. Turner University of Huddersfield, Huddersfield, United Kingdom P. Aden, D. Naeem, R. Smith STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom A. Sunesson, R.A. Yogi ESS, Lund, Sweden
	The RF distribution system for the European Spallation Source will be one of the largest systems ever built. It will distribute the power from 146 power sources to the two types of ESS cavity at two different frequencies and will use one line per cavity for resilience. It will consist of a total of around 3.5 km of waveguide and coaxial line and over 1500 hundred bends. It is designed to transport this RF power over a distance of up to 40m per line, while minimising losses, avoiding reflections and allowing the monitoring of performance. This contribution will give an overview of the design of the system and its status. Installation is due to start in September 2017.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPIK109
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THPVA132	A Study of Potential Accelerator Production of Radioisotopes for Both Diagnostics and Therapy	4765
	N. Ratcliffe, T.R. Edgecock University of Huddersfield, Huddersfield, United Kingdom
	There is currently much interest in accelerator based replacements for radioisotope production. The primary focus is the use of compact low energy (<30MeV) proton accelerators that can provide local on-site production of short lived isotopes and as a replacement for the current reactor production of important isotopes such as Ga-68. As part of a study into the viability of this production method this work undertakes a benchmarking study the GEANT4 code using the new low energy data-driven physics list QGSP_BIC_AllHP for the production of significant diagnostic and therapy isotopes such as F-18 and Ga-68. results from these simulations will be compared to experimental cross-sections and other codes to determine reliability before being used to further asses the activity producible using these reactions.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA132
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THPVA133	HEATHER - HElium Ion Accelerator for RadioTHERapy	4768
	J. Taylor, T.R. Edgecock University of Huddersfield, Huddersfield, United Kingdom S. Green University Birmingham, Birmingham, United Kingdom C. Johnstone Fermilab, Batavia, Illinois, USA
	A non-scaling fixed field alternating gradient (nsFFAG) accelerator is being designed for helium ion therapy. This facility will consist of 2 superconducting rings, treating with helium ions (He²⁺ ) and image with hydrogen ions (H + 2 ). Currently only carbon ions are used to treat cancer, yet there is an increasing interest in the use of lighter ions for therapy. Lighter ions have reduced dose tail beyond the tumour compared to carbon, caused by low Z secondary particles produced via inelastic nuclear reactions. An FFAG approach for helium therapy has never been previously considered. Having demonstrated isochronous acceleration from 0.5 MeV to 900 MeV, we now demonstrate the survival of a realistic beam across both stages.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA133
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Paper

Title

Page

Bead Pull Measurements of the FETS RFQ at RAL

4349

W. Promdee, T.R. Edgecock
IIAA, Huddersfield, United Kingdom
G.E. Boorman
Royal Holloway, University of London, Surrey, United Kingdom
G.E. Boorman
JAI, Egham, Surrey, United Kingdom
T.R. Edgecock, J.K. Pozimski
STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
A.P. Letchford
STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
J.K. Pozimski
Imperial College of Science and Technology, Department of Physics, London, United Kingdom

A Radio Frequency Quadrupole (RFQ) is a part of the Front End Test Stand (FETS) at the Rutherford Appleton Laboratory (RAL), Didcot, UK. The aim of the FETS project is to produce a 60 mA H⁻ beam at 3 MeV. The RFQ is a four-vane type with 4 modules, each of 1 m length, and is designed to accelerate the beam from 65 keV to 3 MeV at 324 MHz. A bead pull system has been designed to measure the field along the RFQ. This will be used in conjunction with 64 tuners to produce a uniform field. In order to optimise the tuning procedure, a model of the RFQ has been creat-ed in COMSOL Multiphysics. This study shows the results from the bead pull measurements and the tuning studies.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPIK108

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPVA133

Thin Internal Target Studies in a Compact FFAG

2411

D. Bruton, R.J. Barlow, T.R. Edgecock
University of Huddersfield, Huddersfield, United Kingdom
C. Johnstone
PAC, Batavia, Illinois, USA

The production of radioisotopes using a thin internal target and recycled beam within a compact FFAG design has been studied. Radioisotopes have a wide range of uses in medicine, and recent disruption to the supply chain has seen a renewed effort to find alternative isotopes and production methods. The FFAG design features separate sector magnets with non-scaling, non-linear field gradients which are optimized with magnet geometry to achieve isochronisity at the level of 0.3%, sufficient for Continuous Wave (CW) operation. Simulations have demonstrated that beam currents of up to 10mA can comfortably be achieved with this design. To further improve production efficiency a thin internal target, where the beam passes through the target and is recirculated, may be used. This setup ensures that production takes place within a narrow energy range, potentially increasing production rates and reducing impurities.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPVA133

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPIK109

The RF Distribution System for the ESS

4352

T.R. Edgecock, N. Turner
University of Huddersfield, Huddersfield, United Kingdom
P. Aden, D. Naeem, R. Smith
STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom
A. Sunesson, R.A. Yogi
ESS, Lund, Sweden

The RF distribution system for the European Spallation Source will be one of the largest systems ever built. It will distribute the power from 146 power sources to the two types of ESS cavity at two different frequencies and will use one line per cavity for resilience. It will consist of a total of around 3.5 km of waveguide and coaxial line and over 1500 hundred bends. It is designed to transport this RF power over a distance of up to 40m per line, while minimising losses, avoiding reflections and allowing the monitoring of performance. This contribution will give an overview of the design of the system and its status. Installation is due to start in September 2017.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPIK109

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPVA132

A Study of Potential Accelerator Production of Radioisotopes for Both Diagnostics and Therapy

4765

N. Ratcliffe, T.R. Edgecock
University of Huddersfield, Huddersfield, United Kingdom

There is currently much interest in accelerator based replacements for radioisotope production. The primary focus is the use of compact low energy (<30MeV) proton accelerators that can provide local on-site production of short lived isotopes and as a replacement for the current reactor production of important isotopes such as Ga-68. As part of a study into the viability of this production method this work undertakes a benchmarking study the GEANT4 code using the new low energy data-driven physics list QGSP_BIC_AllHP for the production of significant diagnostic and therapy isotopes such as F-18 and Ga-68. results from these simulations will be compared to experimental cross-sections and other codes to determine reliability before being used to further asses the activity producible using these reactions.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA132

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPVA133

HEATHER - HElium Ion Accelerator for RadioTHERapy

4768

J. Taylor, T.R. Edgecock
University of Huddersfield, Huddersfield, United Kingdom
S. Green
University Birmingham, Birmingham, United Kingdom
C. Johnstone
Fermilab, Batavia, Illinois, USA

A non-scaling fixed field alternating gradient (nsFFAG) accelerator is being designed for helium ion therapy. This facility will consist of 2 superconducting rings, treating with helium ions (He²⁺ ) and image with hydrogen ions (H + 2 ). Currently only carbon ions are used to treat cancer, yet there is an increasing interest in the use of lighter ions for therapy. Lighter ions have reduced dose tail beyond the tumour compared to carbon, caused by low Z secondary particles produced via inelastic nuclear reactions. An FFAG approach for helium therapy has never been previously considered. Having demonstrated isochronous acceleration from 0.5 MeV to 900 MeV, we now demonstrate the survival of a realistic beam across both stages.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA133

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)