LINAC2016 - List of Keywords (collider)

Paper	Title	Other Keywords	Page
MOPLR039	Development of New Type "Ninja" Cathode for Nb 9-cell Cavity and Experiment of Vertical Electro-Polishing	cavity, cathode, experiment, target	223
	K.N. Nii, V. Chouhan, Y.I. Ida, T.Y. Yamaguchi MGH, Hyogo-ken, Japan H. Hayano, S. Kato, H. Monjushiro, T. Saeki, M. Sawabe KEK, Ibaraki, Japan K. Ishimi MGI, Chiba, Japan
	Marui Galvanizing Co. Ltd. has been improving Vertical Electro-Polishing (VEP) technologies and facilities for Nb 9-cell superconducting accelerator cavity for International Linear Collider (ILC) in collaboration with KEK. This time, we developed new type 'Ninja' cathode in order to improve VEP uniformity of Nb 9-cell cavity inner surface based on the results of 1-cell cavity VEP experiment. In this article, we will report construction of new type "Ninja" cathode for Nb 9-cell cavity and experiment of VEP using this.
	Poster MOPLR039 [0.610 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOPLR039
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TU2A01	State of the Art, Status and Future of RF Sources for Linacs	klystron, linac, operation, status	353
	E. Jensen CERN, Geneva, Switzerland
	This talk tries an overview of recent developments in RF sources for linear accelerators of different scales and for various applications, spanning a frequency range from about 100 MHz to X-band, spanning duty factors from about 10^-3 to CW, and spanning power levels from a few kW up to hundreds of MW average. Exciting recent trends include new bunching concepts for klystrons promising a significant increase of efficiency and better power combiners paving the way to MW-class solid state power amplifiers.
	Slides TU2A01 [15.049 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TU2A01
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TU2A04	High-Gradient RF Development and Applications	klystron, linac, damping, beam-loading	368
	W. Wuensch CERN, Geneva, Switzerland
	Significant progress has been made by the CLIC collaboration to understand the phenomena which limit gradient in normal-conducting accelerating structures and to increase achievable gradient in excess of 100 MV/m. Scientific and technological highlights from the CLIC high-gradient program are presented along with on-going developments and future plans. The talk will also give an overview of the range of applications that potentially benefit from high-frequency and high-gradient accelerating technology.
	Slides TU2A04 [14.317 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TU2A04
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TUPLR045	Thyratron Replacement	operation, klystron, network, medical-accelerators	561
	I. Roth, M.P.J. Gaudreau, M.K. Kempkes, M.G. Munderville Diversified Technologies, Inc., Bedford, Massachusetts, USA
	Funding: *Work supported by DOE under contract DE-SC0011292 Semiconductor thyristors have long been used as a replacement for thyratrons in low power or long pulse RF systems. To date, however, such thyristor assemblies have not demonstrated the reliability needed for installation in short pulse, high peak power RF stations used with many pulsed electron accelerators. The fast rising current in a thyristor tends to be carried in a small region, rather than across the whole device, and this localized current concentration can cause a short circuit failure. An alternate solid-state device, the insulated-gate bipolar transistor (IGBT), can readily operate at the speed needed for the accelerator, but commercial IGBTs cannot handle the voltage and current required. It is, however, possible to assemble these devices in arrays to reach the required performance levels without sacrificing their inherent speed. Diversified Technologies, Inc. (DTI) has patented and refined the technology required to build these arrays of series-parallel connected switches. DTI is currently developing an affordable, reliable, form-fit-function replacement for the klystron modulator thyratrons at SLAC capable of pulsing at 360 kV, 420 A, 6μs, and 120 Hz.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUPLR045
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THPLR003	Fabrication and High-Gradient Testing of an Accelerating Structure Made From Milled Halves	shielding, linac, radiation, accelerating-gradient	845
	W. Wuensch, T. Argyropoulos, N. Catalán Lasheras, D. Esperante Pereira, J. Giner Navarro, A. Grudiev, G. McMonagle, I. Syratchev, B.J. Woolley, H. Zha CERN, Geneva, Switzerland T. Argyropoulos, D. Esperante Pereira, J. Giner Navarro IFIC, Valencia, Spain G.B. Bowden, V.A. Dolgashev, A.A. Haase SLAC, Menlo Park, California, USA P.J. Giansiracusa, T.G. Lucas, M. Volpi The University of Melbourne, Melbourne, Victoria, Australia R. Rajamaki Aalto University, School of Science and Technology, Aalto, Finland X.F.D. Stragier TUE, Eindhoven, The Netherlands
	Accelerating structures made from parts which follow symmetry planes offer many potential advantages over traditional disk-based structures: more options for joining (from bonding to welding), following this more options for material state (heat treated or not) and potentially lower cost since structures can be made from fewer parts. An X-band structure made from milled halves, and with a standard benchmarked CLIC test structure design has been fabricated and high-gradient tested in the range of 100 MV/m.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR003
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOPLR039

Development of New Type "Ninja" Cathode for Nb 9-cell Cavity and Experiment of Vertical Electro-Polishing

cavity, cathode, experiment, target

223

K.N. Nii, V. Chouhan, Y.I. Ida, T.Y. Yamaguchi
MGH, Hyogo-ken, Japan
H. Hayano, S. Kato, H. Monjushiro, T. Saeki, M. Sawabe
KEK, Ibaraki, Japan
K. Ishimi
MGI, Chiba, Japan

Marui Galvanizing Co. Ltd. has been improving Vertical Electro-Polishing (VEP) technologies and facilities for Nb 9-cell superconducting accelerator cavity for International Linear Collider (ILC) in collaboration with KEK. This time, we developed new type 'Ninja' cathode in order to improve VEP uniformity of Nb 9-cell cavity inner surface based on the results of 1-cell cavity VEP experiment. In this article, we will report construction of new type "Ninja" cathode for Nb 9-cell cavity and experiment of VEP using this.

Poster MOPLR039 [0.610 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOPLR039

Export •

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

TU2A01

State of the Art, Status and Future of RF Sources for Linacs

klystron, linac, operation, status

353

E. Jensen
CERN, Geneva, Switzerland

This talk tries an overview of recent developments in RF sources for linear accelerators of different scales and for various applications, spanning a frequency range from about 100 MHz to X-band, spanning duty factors from about 10^-3 to CW, and spanning power levels from a few kW up to hundreds of MW average. Exciting recent trends include new bunching concepts for klystrons promising a significant increase of efficiency and better power combiners paving the way to MW-class solid state power amplifiers.

Slides TU2A01 [15.049 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TU2A01

Export •

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

TU2A04

High-Gradient RF Development and Applications

klystron, linac, damping, beam-loading

368

W. Wuensch
CERN, Geneva, Switzerland

Significant progress has been made by the CLIC collaboration to understand the phenomena which limit gradient in normal-conducting accelerating structures and to increase achievable gradient in excess of 100 MV/m. Scientific and technological highlights from the CLIC high-gradient program are presented along with on-going developments and future plans. The talk will also give an overview of the range of applications that potentially benefit from high-frequency and high-gradient accelerating technology.

Slides TU2A04 [14.317 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TU2A04

Export •

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

TUPLR045

Thyratron Replacement

operation, klystron, network, medical-accelerators

561

I. Roth, M.P.J. Gaudreau, M.K. Kempkes, M.G. Munderville
Diversified Technologies, Inc., Bedford, Massachusetts, USA

Funding: *Work supported by DOE under contract DE-SC0011292
Semiconductor thyristors have long been used as a replacement for thyratrons in low power or long pulse RF systems. To date, however, such thyristor assemblies have not demonstrated the reliability needed for installation in short pulse, high peak power RF stations used with many pulsed electron accelerators. The fast rising current in a thyristor tends to be carried in a small region, rather than across the whole device, and this localized current concentration can cause a short circuit failure. An alternate solid-state device, the insulated-gate bipolar transistor (IGBT), can readily operate at the speed needed for the accelerator, but commercial IGBTs cannot handle the voltage and current required. It is, however, possible to assemble these devices in arrays to reach the required performance levels without sacrificing their inherent speed. Diversified Technologies, Inc. (DTI) has patented and refined the technology required to build these arrays of series-parallel connected switches. DTI is currently developing an affordable, reliable, form-fit-function replacement for the klystron modulator thyratrons at SLAC capable of pulsing at 360 kV, 420 A, 6μs, and 120 Hz.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUPLR045

Export •

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

THPLR003

Fabrication and High-Gradient Testing of an Accelerating Structure Made From Milled Halves

shielding, linac, radiation, accelerating-gradient

845

W. Wuensch, T. Argyropoulos, N. Catalán Lasheras, D. Esperante Pereira, J. Giner Navarro, A. Grudiev, G. McMonagle, I. Syratchev, B.J. Woolley, H. Zha
CERN, Geneva, Switzerland
T. Argyropoulos, D. Esperante Pereira, J. Giner Navarro
IFIC, Valencia, Spain
G.B. Bowden, V.A. Dolgashev, A.A. Haase
SLAC, Menlo Park, California, USA
P.J. Giansiracusa, T.G. Lucas, M. Volpi
The University of Melbourne, Melbourne, Victoria, Australia
R. Rajamaki
Aalto University, School of Science and Technology, Aalto, Finland
X.F.D. Stragier
TUE, Eindhoven, The Netherlands

Accelerating structures made from parts which follow symmetry planes offer many potential advantages over traditional disk-based structures: more options for joining (from bonding to welding), following this more options for material state (heat treated or not) and potentially lower cost since structures can be made from fewer parts. An X-band structure made from milled halves, and with a standard benchmarked CLIC test structure design has been fabricated and high-gradient tested in the range of 100 MV/m.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR003

Export •

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