LINAC2016 - List of Keywords (Windows)

Paper	Title	Other Keywords	Page
MOOP08	Latest News on High Average RF Power Operation at PITZ	gun, operation, vacuum, cathode	59
	Y. Renier, G. Asova, P. Boonpornprasert, J.D. Good, M. Groß, H. Huck, I.I. Isaev, D.K. Kalantaryan, M. Krasilnikov, O. Lishilin, G. Loisch, D. Melkumyan, A. Oppelt, T. Rublack, F. Stephan DESY Zeuthen, Zeuthen, Germany G. Asova INRNE, Sofia, Bulgaria M. Bousonville, S. Choroba, S. Lederer DESY, Hamburg, Germany C. Saisa-ard Chiang Mai University, Chiang Mai, Thailand Q.T. Zhao IMP/CAS, Lanzhou, People's Republic of China
	The Photo Injector Test Facility at DESY in Zeuthen (PITZ) develops, tests and characterizes high brightness electron sources for FLASH and European XFEL. Since these FELs work with superconducting accelerators in pulsed mode, also the corresponding normal-conducting RF gun has to operate with long RF pulses. Generating high beam quality from the photocathode RF gun in addition requires a high accelerating gradient at the cathode. Therefore, the RF gun has to ensure stable and reliable operation at high average RF power, e.g. 6.5 MW peak power in the gun for 650 μs RF pulse length at 10 Hz repetition rate for the European XFEL. Several RF gun setups have been operated towards these goals over the last years. The latest gun setup was brought into the PITZ tunnel on February 10th 2016 and its RF operation started on March 7th. This setup includes RF gun prototype 4.6 with a new cathode contact spring design and an RF input distribution which consists of an in-vacuum coaxial coupler, an in-vacuum T-combiner and 2 RF windows from DESY production. In this contribution we will summarize the experience from the RF conditioning of this setup towards high average RF power and first experience from the operation with photoelectrons.
	Slides MOOP08 [0.563 MB]
	Poster MOOP08 [0.367 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOOP08
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPLR048	Status and Lesson Learned from Manufacturing of FPC Couplers for the XFEL Program	SRF, cryomodule, factory, status	572
	S. Sierra, G. Garcin, Ch.L. Lievin, G. Vignette TED, Velizy-Villacoublay, France A. Gallas, W. Kaabi LAL, Orsay, France M. Knaak, M. Pekeler, L. Zweibaeumer RI Research Instruments GmbH, Bergisch Gladbach, Germany
	For the XFEL accelerator, Thales, RI research Instrument and LAL are working on the manufacturing, assembly and conditioning of Fundamental power couplers. 670 couplers has been manufactured. The main characteristics of these couplers are remained at 1.3 GHz. The paper describes the full production activity from the starting of the program We describe the lesson learned from a mass production of FPC coupler and different steps necessaries for obtaining a rate up to 10 couplers a week. we propose also some other way to be optimized for a future possible mass production of such components. With comparison of processes and adaptation which could benefit to an increase rate, if needed, including some of them which could be studies from the coupler definition to the manufacturing process in order to obtain a stable and possible increased rate or lower cost of production by decreasing the risks on programs. The status of the production curve during the program is also given
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUPLR048
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TUPLR050	Design of 4-vane RFQ with Magnetic Coupling Windows for Nuclotron Injector Lu-20	rfq, ion, coupling, linac	575
	V.A. Koshelev, G. Kropachev, T. Kulevoy, D.A. Liakin, A.S. Plastun ITEP, Moscow, Russia A.V. Butenko JINR, Dubna, Moscow Region, Russia T. Kulevoy, S.M. Polozov MEPhI, Moscow, Russia S.V. Vinogradov MIPT, Dolgoprudniy, Moscow Region, Russia
	Alvarez-type linac LU-20 is used as Nuclotron injector. In the framework of NICA project the high voltage electrostatic pre-injector for LU-20 has been replaced by RFQ linac. The RFQ was designed by the team of ITEP and MEPhI (Moscow, Russia) and was manufactured in VNIITF (Sneginsk, Russia). The engineering design of the 4-vane RFQ linac with magnetic coupling windows and details of its manufacturing are presented and discussed.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUPLR050
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TUPLR058	Progress of a 162.5 MHz High-Current RFQ With Coupling Windows	rfq, cavity, coupling, simulation	589
	Q. Fu, P.P. Gan, S.L. Gao, F.J. Jia, H.P. Li, Y.R. Lu, Z. Wang, K. Zhu PKU, Beijing, People's Republic of China
	Funding: Supported by National Basic Research Program of China(2014CB845503) A 162.5 MHz, four-vane RFQ with magnetic coupling windows has been designed by the RFQ group of Peking University. Clear frequency separation of the resonant modes and smaller transverse dimension are the advantages of the window-type RFQ. The electromagnetic simulations have shown that the average power loss of this 1.809 m long RFQ is about 50 kW in continuous wave mode. Consequently, a water cooling system was designed via the multi-physics analysis. The mechanical design and assembling technology were also presented in this paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUPLR058
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TUPLR060	RF Design of the Nuclotron-NICA 145.2 MHz RFQ	rfq, coupling, dipole, simulation	595
	A.S. Plastun, V. Andreev, V.A. Koshelev, T. Kulevoy, V.G. Kuzmichev, D.A. Liakin, A. Sitnikov ITEP, Moscow, Russia A.V. Butenko JINR, Dubna, Moscow Region, Russia
	ITEP has designed the Radio-Frequency Quadrupole (RFQ) linac for the JINR NICA Complex (Dubna, Russia) to provide ion beams (q/A ≥ 0.3) with energy of 156 keV/u for further acceleration by existing Alvarez-type linac. The RFQ is based on a 4-vane structure with magnetic coupling windows in order to avoid a risk of excitation of dipole field components inherent in a conventional 4-vane resonator. The paper presents results of the radio-frequency (RF) design and capabilities used for coarse and fine tuning of the field distribution and resonant frequency during manufacturing and finalizing of the RFQ.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUPLR060
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THPRC006	Development of 704.4 MHz Power Coupler Window for Myrrha Project	simulation, linac, cavity, electron	776
	F. Geslin, P. Blache, M. Chabot, J. Lesrel IPN, Orsay, France Ch.L. Lievin, S. Sierra TED, Velizy, France
	Myrrha is an accelerator driven system (ADS) hybrid research reactor designed for spent nuclear fuel burning. The linac controlling the reactor has to be highly reliable (low failure rate). In order to fulfill requirements of ADS projects like Myrrha, IPNO and Thales are involved in a power couplers research and development program. We develop a power coupler window, with MAX RF design, for 80 kW CW input power. During the study, we take account of fabrication and cost issues. We present in this paper the result of simulations needed to design this coupler window. The electromagnetic, thermal and thermo-mechanical simulations were performed with Ansys. The multipacting simulations were performed with Musicc3D, software developed by IPNO. The conditioning and test bench is also described as two prototypes have to be tested this autumn.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPRC006
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THPRC008	Status of the Development and Manufacturing of LCLS-II Fundamental Power Couplers	SRF, status, cryomodule, factory	782
	S. Sierra, G. Garcin, Ch.L. Lievin, C. Ribaud, G. Vignette TED, Velizy-Villacoublay, France M. Knaak, A. Navitski, M. Pekeler, L. Zweibaeumer RI Research Instruments GmbH, Bergisch Gladbach, Germany
	For the LCLS-II project, Thales and RI research Instrument are working on the manufacturing and assembly of the Fundamental Power Couplers. The paper describes the production of the Fundamental Power Couplers for the LCLS-II project. The main characteristics of these couplers are remained at 1.3 GHz. It describes the main challenges to be overcome principally on the Warm Internal conductor, with a thickness of copper of 150μm. The results obtained on this coating We describe the results obtained on the prototype phase and the status of the serial production on the date of the paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPRC008
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOOP08

Latest News on High Average RF Power Operation at PITZ

gun, operation, vacuum, cathode

59

Y. Renier, G. Asova, P. Boonpornprasert, J.D. Good, M. Groß, H. Huck, I.I. Isaev, D.K. Kalantaryan, M. Krasilnikov, O. Lishilin, G. Loisch, D. Melkumyan, A. Oppelt, T. Rublack, F. Stephan
DESY Zeuthen, Zeuthen, Germany
G. Asova
INRNE, Sofia, Bulgaria
M. Bousonville, S. Choroba, S. Lederer
DESY, Hamburg, Germany
C. Saisa-ard
Chiang Mai University, Chiang Mai, Thailand
Q.T. Zhao
IMP/CAS, Lanzhou, People's Republic of China

The Photo Injector Test Facility at DESY in Zeuthen (PITZ) develops, tests and characterizes high brightness electron sources for FLASH and European XFEL. Since these FELs work with superconducting accelerators in pulsed mode, also the corresponding normal-conducting RF gun has to operate with long RF pulses. Generating high beam quality from the photocathode RF gun in addition requires a high accelerating gradient at the cathode. Therefore, the RF gun has to ensure stable and reliable operation at high average RF power, e.g. 6.5 MW peak power in the gun for 650 μs RF pulse length at 10 Hz repetition rate for the European XFEL. Several RF gun setups have been operated towards these goals over the last years. The latest gun setup was brought into the PITZ tunnel on February 10th 2016 and its RF operation started on March 7th. This setup includes RF gun prototype 4.6 with a new cathode contact spring design and an RF input distribution which consists of an in-vacuum coaxial coupler, an in-vacuum T-combiner and 2 RF windows from DESY production. In this contribution we will summarize the experience from the RF conditioning of this setup towards high average RF power and first experience from the operation with photoelectrons.

Slides MOOP08 [0.563 MB]

Poster MOOP08 [0.367 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOOP08

Export •

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

TUPLR048

Status and Lesson Learned from Manufacturing of FPC Couplers for the XFEL Program

SRF, cryomodule, factory, status

572

S. Sierra, G. Garcin, Ch.L. Lievin, G. Vignette
TED, Velizy-Villacoublay, France
A. Gallas, W. Kaabi
LAL, Orsay, France
M. Knaak, M. Pekeler, L. Zweibaeumer
RI Research Instruments GmbH, Bergisch Gladbach, Germany

For the XFEL accelerator, Thales, RI research Instrument and LAL are working on the manufacturing, assembly and conditioning of Fundamental power couplers. 670 couplers has been manufactured. The main characteristics of these couplers are remained at 1.3 GHz. The paper describes the full production activity from the starting of the program We describe the lesson learned from a mass production of FPC coupler and different steps necessaries for obtaining a rate up to 10 couplers a week. we propose also some other way to be optimized for a future possible mass production of such components. With comparison of processes and adaptation which could benefit to an increase rate, if needed, including some of them which could be studies from the coupler definition to the manufacturing process in order to obtain a stable and possible increased rate or lower cost of production by decreasing the risks on programs. The status of the production curve during the program is also given

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUPLR048

Export •

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

TUPLR050

Design of 4-vane RFQ with Magnetic Coupling Windows for Nuclotron Injector Lu-20

rfq, ion, coupling, linac

575

V.A. Koshelev, G. Kropachev, T. Kulevoy, D.A. Liakin, A.S. Plastun
ITEP, Moscow, Russia
A.V. Butenko
JINR, Dubna, Moscow Region, Russia
T. Kulevoy, S.M. Polozov
MEPhI, Moscow, Russia
S.V. Vinogradov
MIPT, Dolgoprudniy, Moscow Region, Russia

Alvarez-type linac LU-20 is used as Nuclotron injector. In the framework of NICA project the high voltage electrostatic pre-injector for LU-20 has been replaced by RFQ linac. The RFQ was designed by the team of ITEP and MEPhI (Moscow, Russia) and was manufactured in VNIITF (Sneginsk, Russia). The engineering design of the 4-vane RFQ linac with magnetic coupling windows and details of its manufacturing are presented and discussed.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUPLR050

Export •

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

TUPLR058

Progress of a 162.5 MHz High-Current RFQ With Coupling Windows

rfq, cavity, coupling, simulation

589

Q. Fu, P.P. Gan, S.L. Gao, F.J. Jia, H.P. Li, Y.R. Lu, Z. Wang, K. Zhu
PKU, Beijing, People's Republic of China

Funding: Supported by National Basic Research Program of China(2014CB845503)
A 162.5 MHz, four-vane RFQ with magnetic coupling windows has been designed by the RFQ group of Peking University. Clear frequency separation of the resonant modes and smaller transverse dimension are the advantages of the window-type RFQ. The electromagnetic simulations have shown that the average power loss of this 1.809 m long RFQ is about 50 kW in continuous wave mode. Consequently, a water cooling system was designed via the multi-physics analysis. The mechanical design and assembling technology were also presented in this paper.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUPLR058

Export •

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

TUPLR060

RF Design of the Nuclotron-NICA 145.2 MHz RFQ

rfq, coupling, dipole, simulation

595

A.S. Plastun, V. Andreev, V.A. Koshelev, T. Kulevoy, V.G. Kuzmichev, D.A. Liakin, A. Sitnikov
ITEP, Moscow, Russia
A.V. Butenko
JINR, Dubna, Moscow Region, Russia

ITEP has designed the Radio-Frequency Quadrupole (RFQ) linac for the JINR NICA Complex (Dubna, Russia) to provide ion beams (q/A ≥ 0.3) with energy of 156 keV/u for further acceleration by existing Alvarez-type linac. The RFQ is based on a 4-vane structure with magnetic coupling windows in order to avoid a risk of excitation of dipole field components inherent in a conventional 4-vane resonator. The paper presents results of the radio-frequency (RF) design and capabilities used for coarse and fine tuning of the field distribution and resonant frequency during manufacturing and finalizing of the RFQ.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUPLR060

Export •

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

THPRC006

Development of 704.4 MHz Power Coupler Window for Myrrha Project

simulation, linac, cavity, electron

776

F. Geslin, P. Blache, M. Chabot, J. Lesrel
IPN, Orsay, France
Ch.L. Lievin, S. Sierra
TED, Velizy, France

Myrrha is an accelerator driven system (ADS) hybrid research reactor designed for spent nuclear fuel burning. The linac controlling the reactor has to be highly reliable (low failure rate). In order to fulfill requirements of ADS projects like Myrrha, IPNO and Thales are involved in a power couplers research and development program. We develop a power coupler window, with MAX RF design, for 80 kW CW input power. During the study, we take account of fabrication and cost issues. We present in this paper the result of simulations needed to design this coupler window. The electromagnetic, thermal and thermo-mechanical simulations were performed with Ansys. The multipacting simulations were performed with Musicc3D, software developed by IPNO. The conditioning and test bench is also described as two prototypes have to be tested this autumn.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPRC006

Export •

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

THPRC008

Status of the Development and Manufacturing of LCLS-II Fundamental Power Couplers

SRF, status, cryomodule, factory

782

S. Sierra, G. Garcin, Ch.L. Lievin, C. Ribaud, G. Vignette
TED, Velizy-Villacoublay, France
M. Knaak, A. Navitski, M. Pekeler, L. Zweibaeumer
RI Research Instruments GmbH, Bergisch Gladbach, Germany

For the LCLS-II project, Thales and RI research Instrument are working on the manufacturing and assembly of the Fundamental Power Couplers. The paper describes the production of the Fundamental Power Couplers for the LCLS-II project. The main characteristics of these couplers are remained at 1.3 GHz. It describes the main challenges to be overcome principally on the Warm Internal conductor, with a thickness of copper of 150μm. The results obtained on this coating We describe the results obtained on the prototype phase and the status of the serial production on the date of the paper.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPRC008

Export •

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