LINAC2016 - Classification: 1 Electron Accelerators and Applications / 1F Industrial and Medical Accelerators

Paper	Title	Page
MOOP12	Klynac Design Simulations and Experimental Setup	68
MOPLR001	use link to see paper's listing under its alternate paper code
	K.E. Nichols, B.E. Carlsten, A. Malyzhenkov LANL, Los Alamos, New Mexico, USA
	Funding: The authors gratefully acknowledge the support of the US Department of Energy through the LANL/LDRD Program for this work. We present results of a proof-of-principle demonstration of the first ever klynac, a compact 1 MeV linear accelerator with integrated klystron source using one electron beam. This device is bi-resonant, utilizing one resonant circuit for the klystron input and gain cavities, and one for the klystron output and linac cavities. The purpose of a klynac-type device is to provide a compact and inexpensive alternative for a conventional 1 to 6 MeV accelerator. A conventional accelerator requires a separate RF source and linac and all the associated hardware needed for that architecture. The klynac configuration eliminates many of the components to reduce the weight of the entire system by 60%. We have built an 8-cavity, 2.84-GHz RF structure for a 1-MeV bi-resonant klynac. A 50-kV, 10-A electron gun provides the single beam needed. Numerical modeling was used to optimize the design. The separation between the klynac ouput cavity and the first accelerator cavity was adjusted to optimize the bunch capture and a pin-hole aperture between the two cavities reduces the beam current in the linac section to about 0.1 A. Standard high-shunt impedance linac cavities designs are used. We have fabricated the first test structure. The structure will be tested with beam in early Summer 2016. Results will be presented at LINAC 2016.
	Slides MOOP12 [1.136 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOOP12
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TH3A03	The VELA and CLARA Test Facilities at Daresbury Laboratory	734
	P.A. McIntosh, D. Angal-Kalinin, J.A. Clarke, L.S. Cowie, B.D. Fell, S.P. Jamison, B.L. Militsyn, Y.M. Saveliev, D.J. Scott, N. Thompson, P.H. Williams STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom A. Gleeson, T.J. Jones STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom
	The Versatile Electron Linear Accelerator (VELA) provides enabling infrastructures targeted at the development and testing of novel and compact accelerator technologies, specifically through partnership with academia and industry, aimed at addressing applications in medicine, health, security, energy and industrial processing. The facility is now fully commissioned and is taking advantage of the variable electron beam parameters to demonstrate new techniques/processes or otherwise develop new technologies for future commercial realization. Examples of which include; electron diffraction and new cargo scanning processes. The Compact Linear Accelerator for Research and Applications (CLARA) will be a novel FEL test facility, focused on the generation of ultra-short photon pulses with extreme levels of stability and synchronization. The principal aim is to experimentally demonstrate that sub-cooperation length pulse generation with FELs is viable, and to compare the various schemes being championed. The results will translate directly to existing and future X-ray FELs, enabling attosecond pulse generation. Both the VELA and CLARA facilities are co-located at Daresbury Laboratory and provide the UK with a unique platform for scientific and commercial R&D using ultra-short pulse, high precision electron and photon beams.
	Slides TH3A03 [11.795 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TH3A03
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THPLR009	A Compact Muon Accelerator for Tomography and Active Interrogation	861
	R.W. Garnett, S.S. Kurennoy, L. Rybarcyk LANL, Los Alamos, New Mexico, USA K. Hasegawa JAEA, Ibaraki-ken, Japan S. Portillo, E. Schamiloglu University of New Mexico, Albuquerque, USA N. Saito J-PARC, KEK & JAEA, Ibaraki-ken, Japan
	Funding: This work is supported by the United States Department of Energy, National Nuclear Security Agency, under contract DE-AC52-06NA25396. Muons have been demonstrated to be great probes for imaging large and dense objects due to their excellent penetrating ability. At present there are no muon accelerators. Development of a compact system that can produce an intense beam of accelerated muons would provide unique imaging options for stockpile stewardship while delivering minimal radiation dose, as well as various homeland-security and industrial applications. Our novel compact accelerator approach allows a single linac to be used to first accelerate an electron beam to 800 MeV to generate muons by interacting with a production target in a high-field solenoid magnet and then to collect and accelerate these low-energy muons to 1 GeV to be used for imaging or active interrogation. The key enabling technology is a high-gradient accelerator with large energy and angular acceptances. Our proposed solution for efficient acceleration of low-energy muons is a 0-mode linac coupled with conventional electron RF accelerating structures to provide a compact system that could deliver a controllable high-flux beam of muons with well-defined energy to allow precise radiographic inspections of complicated objects. The details of the conceptual design will be discussed.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR009
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THPLR011	Traveling Wave Accelerating Structure Power Input Calculation With Equivalent Circuit Method	864
SPWR007	use link to see paper's listing under its alternate paper code
	S.V. Matsievskiy, V.I. Kaminskiy MEPhI, Moscow, Russia
	Nowadays linac accelerating RF systems design is usually done by the finite difference method. It provides high accuracy of calculations and freedom in topology choosing, but may draw considerable amounts of computer resources with long calculation times. Alternative to this method, equivalent circuit method exists. The basic idea of this method is to build a lumped element circuit, which with certain approximation acts as an original accelerating cell. It drastically reduces the number of equations to solve. This method is long known but usually only used for the particular accelerating structures when speed of calculation is a key-factor. This paper describes an attempt to create more universal and user-friendly software application for calculating electrical field distribution in accelerating structures, provides mathematical equations this software is based on. The resulting application may be used for preliminary calculations of acceleration structures and help to determine cells electrodynamic parameters reducing overall design time.
	Poster THPLR011 [0.789 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR011
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

MOOP12

Klynac Design Simulations and Experimental Setup

68

MOPLR001

use link to see paper's listing under its alternate paper code

K.E. Nichols, B.E. Carlsten, A. Malyzhenkov
LANL, Los Alamos, New Mexico, USA

Funding: The authors gratefully acknowledge the support of the US Department of Energy through the LANL/LDRD Program for this work.
We present results of a proof-of-principle demonstration of the first ever klynac, a compact 1 MeV linear accelerator with integrated klystron source using one electron beam. This device is bi-resonant, utilizing one resonant circuit for the klystron input and gain cavities, and one for the klystron output and linac cavities. The purpose of a klynac-type device is to provide a compact and inexpensive alternative for a conventional 1 to 6 MeV accelerator. A conventional accelerator requires a separate RF source and linac and all the associated hardware needed for that architecture. The klynac configuration eliminates many of the components to reduce the weight of the entire system by 60%. We have built an 8-cavity, 2.84-GHz RF structure for a 1-MeV bi-resonant klynac. A 50-kV, 10-A electron gun provides the single beam needed. Numerical modeling was used to optimize the design. The separation between the klynac ouput cavity and the first accelerator cavity was adjusted to optimize the bunch capture and a pin-hole aperture between the two cavities reduces the beam current in the linac section to about 0.1 A. Standard high-shunt impedance linac cavities designs are used. We have fabricated the first test structure. The structure will be tested with beam in early Summer 2016. Results will be presented at LINAC 2016.

Slides MOOP12 [1.136 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOOP12

Export •

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

TH3A03

The VELA and CLARA Test Facilities at Daresbury Laboratory

734

P.A. McIntosh, D. Angal-Kalinin, J.A. Clarke, L.S. Cowie, B.D. Fell, S.P. Jamison, B.L. Militsyn, Y.M. Saveliev, D.J. Scott, N. Thompson, P.H. Williams
STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
A. Gleeson, T.J. Jones
STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom

The Versatile Electron Linear Accelerator (VELA) provides enabling infrastructures targeted at the development and testing of novel and compact accelerator technologies, specifically through partnership with academia and industry, aimed at addressing applications in medicine, health, security, energy and industrial processing. The facility is now fully commissioned and is taking advantage of the variable electron beam parameters to demonstrate new techniques/processes or otherwise develop new technologies for future commercial realization. Examples of which include; electron diffraction and new cargo scanning processes. The Compact Linear Accelerator for Research and Applications (CLARA) will be a novel FEL test facility, focused on the generation of ultra-short photon pulses with extreme levels of stability and synchronization. The principal aim is to experimentally demonstrate that sub-cooperation length pulse generation with FELs is viable, and to compare the various schemes being championed. The results will translate directly to existing and future X-ray FELs, enabling attosecond pulse generation. Both the VELA and CLARA facilities are co-located at Daresbury Laboratory and provide the UK with a unique platform for scientific and commercial R&D using ultra-short pulse, high precision electron and photon beams.

Slides TH3A03 [11.795 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TH3A03

Export •

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

THPLR009

A Compact Muon Accelerator for Tomography and Active Interrogation

861

R.W. Garnett, S.S. Kurennoy, L. Rybarcyk
LANL, Los Alamos, New Mexico, USA
K. Hasegawa
JAEA, Ibaraki-ken, Japan
S. Portillo, E. Schamiloglu
University of New Mexico, Albuquerque, USA
N. Saito
J-PARC, KEK & JAEA, Ibaraki-ken, Japan

Funding: This work is supported by the United States Department of Energy, National Nuclear Security Agency, under contract DE-AC52-06NA25396.
Muons have been demonstrated to be great probes for imaging large and dense objects due to their excellent penetrating ability. At present there are no muon accelerators. Development of a compact system that can produce an intense beam of accelerated muons would provide unique imaging options for stockpile stewardship while delivering minimal radiation dose, as well as various homeland-security and industrial applications. Our novel compact accelerator approach allows a single linac to be used to first accelerate an electron beam to 800 MeV to generate muons by interacting with a production target in a high-field solenoid magnet and then to collect and accelerate these low-energy muons to 1 GeV to be used for imaging or active interrogation. The key enabling technology is a high-gradient accelerator with large energy and angular acceptances. Our proposed solution for efficient acceleration of low-energy muons is a 0-mode linac coupled with conventional electron RF accelerating structures to provide a compact system that could deliver a controllable high-flux beam of muons with well-defined energy to allow precise radiographic inspections of complicated objects. The details of the conceptual design will be discussed.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR009

Export •

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

THPLR011

Traveling Wave Accelerating Structure Power Input Calculation With Equivalent Circuit Method

864

SPWR007

use link to see paper's listing under its alternate paper code

S.V. Matsievskiy, V.I. Kaminskiy
MEPhI, Moscow, Russia

Nowadays linac accelerating RF systems design is usually done by the finite difference method. It provides high accuracy of calculations and freedom in topology choosing, but may draw considerable amounts of computer resources with long calculation times. Alternative to this method, equivalent circuit method exists. The basic idea of this method is to build a lumped element circuit, which with certain approximation acts as an original accelerating cell. It drastically reduces the number of equations to solve. This method is long known but usually only used for the particular accelerating structures when speed of calculation is a key-factor. This paper describes an attempt to create more universal and user-friendly software application for calculating electrical field distribution in accelerating structures, provides mathematical equations this software is based on. The resulting application may be used for preliminary calculations of acceleration structures and help to determine cells electrodynamic parameters reducing overall design time.

Poster THPLR011 [0.789 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR011

Export •

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