LINAC2016 - List of Authors (Naito, F.)

Paper	Title	Page
MOPLR052	LEBT Commissioning of the J-PARC LINAC	251
	T. Shibata, K. Ikegami, T. Maruta, K. Ohkoshi J-PARC, KEK & JAEA, Ibaraki-ken, Japan H. Asano, Y. Kondo, A. Miura, H. Oguri JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan Y. Liu KEK/JAEA, Ibaraki-Ken, Japan F. Naito, A. Takagi KEK, Tokai, Ibaraki, Japan
	After upgrade of J-PARC Linac in 2014, Low Energy Beam Transport (LEBT) beam commissioning of the J-PARC LINAC has been made for improving H-beam intensity extracted from Linac. Currents of two solenoid coils and steering magnets in LEBT are optimized with extraction and acceleration voltages for static acceleration in ion source (IS) which decides on an initial emittance diagram of H⁻ beam. As a result of LEBT and IS parameter optimization, beam transmission rate of RFQ has been reached up to 96 % in 50 mA H⁻ current operation. Moreover, PIC-MC (Particle-In-Cell Monte-Carlo) simulation model is developed for H⁻ transport in LEBT. Comparison between experimental and numerical results are presented to clarify beam physics from IS exit to RFQ entrance.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOPLR052
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THOP08	Beam Commissioning of the i-BNCT Linac	760
THPLR056	use link to see paper's listing under its alternate paper code
	F. Naito, S. Anami, Z. Fang, K. Futatsukawa, Y. Honda, Y. Hori, M. Kawamura, H. Kobayashi, T. Kurihara, T. Miura, T. Miura, T. Miyajima, T. Obina, F. Qiu, Y. Sato, T. Shibata, M. Shimamoto, A. Takagi, E. Takasaki, M. Uota KEK, Ibaraki, Japan S. Fujikura ICEPP, Tokyo, Japan K. Ikegami J-PARC, KEK & JAEA, Ibaraki-ken, Japan H. Kumada, Su. Tanaka Tsukuba University, Graduate School of Comprehensive Human Sciences, Ibaraki, Japan Y. Liu, T. Maruta KEK/JAEA, Ibaraki-Ken, Japan A. Miura JAEA/J-PARC, Tokai-mura, Japan N. Nagura, T. Ohba Nippon Advanced Technology Co., Ltd., Tokai, Japan T. Onishi Tsukuba University, Ibaraki, Japan T. Ouchi ATOX, Ibaraki, Japan
	The beam commissioning of the linac for the boron neutron capture therapy of Ibaraki prefecture (i-BNCT) has been started. The accelerator of i-BNCT consists of the 3-MeV RFQ and 8-MeV DTL. The design of RF structure of them is based on the J-PARC linac. After the first demonstration of neutron production on December 2015, significant modifications to the linac were given in order to increase the operation stability and the beam power. The progress of the beam commissioning of the i-BNCT will be presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THOP08
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FR1A05	Development of a Muon Linac for the G-2/EDM Experiment at J-PARC	1037
	M. Otani, N. Kawamura, T. Mibe, F. Naito, M. Yoshida KEK, Ibaraki, Japan K. Hasegawa, Y. Kondo JAEA, Ibaraki-ken, Japan N. Hayashizaki RLNR, Tokyo, Japan T. Ito JAEA/J-PARC, Tokai-mura, Japan Y. Iwashita Kyoto ICR, Uji, Kyoto, Japan Y. Iwata NIRS, Chiba-shi, Japan R. Kitamura University of Tokyo, Tokyo, Japan N. Saito J-PARC, KEK & JAEA, Ibaraki-ken, Japan
	Precision measurements of the muon's anomalous magnetic moment (g-2) and electric dipole moment (EDM) are one of the effective ways to test the standard model. An ultra-cold muon beam is generated from a surface muon beam by a thermal muonium production and accelerated to 300 MeV/c by a linac. The muon linac consists of an RFQ, an inter-digital IH, a Disk And Washer structure, and a disk loaded structure. The ultra-cold muons will have an extremely small momentum spread of 0.3 % with a normalized transverse emittance of around 1.5 pi mm-mrad. The design and status of the muon linac at J-PARC will be presented.
	Slides FR1A05 [13.154 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-FR1A05
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Paper

Title

Page

LEBT Commissioning of the J-PARC LINAC

251

T. Shibata, K. Ikegami, T. Maruta, K. Ohkoshi
J-PARC, KEK & JAEA, Ibaraki-ken, Japan
H. Asano, Y. Kondo, A. Miura, H. Oguri
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan
Y. Liu
KEK/JAEA, Ibaraki-Ken, Japan
F. Naito, A. Takagi
KEK, Tokai, Ibaraki, Japan

After upgrade of J-PARC Linac in 2014, Low Energy Beam Transport (LEBT) beam commissioning of the J-PARC LINAC has been made for improving H-beam intensity extracted from Linac. Currents of two solenoid coils and steering magnets in LEBT are optimized with extraction and acceleration voltages for static acceleration in ion source (IS) which decides on an initial emittance diagram of H⁻ beam. As a result of LEBT and IS parameter optimization, beam transmission rate of RFQ has been reached up to 96 % in 50 mA H⁻ current operation. Moreover, PIC-MC (Particle-In-Cell Monte-Carlo) simulation model is developed for H⁻ transport in LEBT. Comparison between experimental and numerical results are presented to clarify beam physics from IS exit to RFQ entrance.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOPLR052

Export •

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

THOP08

Beam Commissioning of the i-BNCT Linac

760

THPLR056

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

F. Naito, S. Anami, Z. Fang, K. Futatsukawa, Y. Honda, Y. Hori, M. Kawamura, H. Kobayashi, T. Kurihara, T. Miura, T. Miura, T. Miyajima, T. Obina, F. Qiu, Y. Sato, T. Shibata, M. Shimamoto, A. Takagi, E. Takasaki, M. Uota
KEK, Ibaraki, Japan
S. Fujikura
ICEPP, Tokyo, Japan
K. Ikegami
J-PARC, KEK & JAEA, Ibaraki-ken, Japan
H. Kumada, Su. Tanaka
Tsukuba University, Graduate School of Comprehensive Human Sciences, Ibaraki, Japan
Y. Liu, T. Maruta
KEK/JAEA, Ibaraki-Ken, Japan
A. Miura
JAEA/J-PARC, Tokai-mura, Japan
N. Nagura, T. Ohba
Nippon Advanced Technology Co., Ltd., Tokai, Japan
T. Onishi
Tsukuba University, Ibaraki, Japan
T. Ouchi
ATOX, Ibaraki, Japan

The beam commissioning of the linac for the boron neutron capture therapy of Ibaraki prefecture (i-BNCT) has been started. The accelerator of i-BNCT consists of the 3-MeV RFQ and 8-MeV DTL. The design of RF structure of them is based on the J-PARC linac. After the first demonstration of neutron production on December 2015, significant modifications to the linac were given in order to increase the operation stability and the beam power. The progress of the beam commissioning of the i-BNCT will be presented.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THOP08

Export •

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

FR1A05

Development of a Muon Linac for the G-2/EDM Experiment at J-PARC

1037

M. Otani, N. Kawamura, T. Mibe, F. Naito, M. Yoshida
KEK, Ibaraki, Japan
K. Hasegawa, Y. Kondo
JAEA, Ibaraki-ken, Japan
N. Hayashizaki
RLNR, Tokyo, Japan
T. Ito
JAEA/J-PARC, Tokai-mura, Japan
Y. Iwashita
Kyoto ICR, Uji, Kyoto, Japan
Y. Iwata
NIRS, Chiba-shi, Japan
R. Kitamura
University of Tokyo, Tokyo, Japan
N. Saito
J-PARC, KEK & JAEA, Ibaraki-ken, Japan

Precision measurements of the muon's anomalous magnetic moment (g-2) and electric dipole moment (EDM) are one of the effective ways to test the standard model. An ultra-cold muon beam is generated from a surface muon beam by a thermal muonium production and accelerated to 300 MeV/c by a linac. The muon linac consists of an RFQ, an inter-digital IH, a Disk And Washer structure, and a disk loaded structure. The ultra-cold muons will have an extremely small momentum spread of 0.3 % with a normalized transverse emittance of around 1.5 pi mm-mrad. The design and status of the muon linac at J-PARC will be presented.

Slides FR1A05 [13.154 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-FR1A05

Export •

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