IPAC2016 - List of Keywords (beam-transport)

Paper	Title	Other Keywords	Page
MOPMR008	Development of Beam Position Monitor for a Heavy-ion Linac of KHIMA	proton, cyclotron, ion, synchrotron	238
	J.G. Hwang KIRAMS/KHIMA, Seoul, Republic of Korea G. Hahn, T.K. Yang KIRAMS, Seoul, Republic of Korea
	Funding: This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIP) (no. NRF-2014M2C3A1029534). The carbon and proton beams are produced by the electron cyclotron resonance ion source with the energy of 8 keV/u and it is accelerated up to 7 MeV/u by the RFQ and IH-DTL. The accelerated beam is injected on the synchrotron through the medium energy beam transport (MEBT). In the MEBT line of KHIMA, the stripline beam position monitor (BPM) is installed to measure the beam trajectory and orbit jitter before the beam injection at the synchrotron. It is also used to measure the phase information such as a bunch length for the de-buncher tuning in MEBT line. The BPM has the position resolution of 100 um with the diameter of 40 mm. The design study is performed and it is fabricated. In order to confirm the performance of the beam position monitor, the measurement of position accuracy and calibration by using wire test-bench, and the beam test with proton beam from MC-50 in KIRAMS are performed.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMR008
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MOPMR009	Development of Large Aperture Faraday-Cup for LEBT of KHIMA.	ion, electron, proton, ECR	241
	J.G. Hwang KIRAMS/KHIMA, Seoul, Republic of Korea T.K. Yang KIRAMS, Seoul, Republic of Korea
	Funding: This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIP) (no. NRF-2014M2C3A1029534). Since an aperture of a low energy beam transport line of the KHIMA is quite large, 100 mm, to minimize an uncontrolled beam loss, large aperture Faraday-cup with the diameter of 100 mm is installed to measure the beam current from the electron cyclotron resonance ion source (ECR-IS) and to identify the ion species using analyzing magnet. The suppression ring is designed to reduce the repelling electrons for an accurate measurement. The Faraday-cup has the cooling channel with the heat capability of 100 W to recover the heat from the ion beam for safety during the operation. In order to reduce the noise propagation from the cooling channel, the cooling channel is insulated with the cup. In this presentation, we show the physical modeling, mechanical aspect for design the large aperture Faraday-cup, and the result of in-beam test with the ECR-IS in KHIMA.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMR009
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MOPOY027	Emittance Measurement with Wire Scanners at C-ADS Injector-I	emittance, rfq, simulation, background	910
	H. Geng, C. Meng, Y.F. Sui, F. Yan, L. Yu, Y.L. Zhao IHEP, Beijing, People's Republic of China
	The transverse emittance at C-ADS injector-I has been measured by the wire scanners at the Medium Energy Beam Transport-I (MEBT1). We have studied the effect of different fitting methods for obtaining the beam sizes on the emittance result, the result will be presented in this paper. The validation study of the quad-scan method with the presence of space charge effect at 10 mA will also be shown, and finally the quad-scan results will be compared with the multi-wire results.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOY027
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MOPOY030	Superconducting Cavity Phase and Amplitude Measurement in Low Energy Accelerating Section	LLRF, cavity, linac, superconducting-cavity	919
	C. Meng, H. Geng, F. Yan, Y.L. Zhao IHEP, Beijing, People's Republic of China
	Superconducting linear accelerator is the tendency in linac design with the development of superconducting RF technology. Superconducting cavities used as accelerating section in low energy Hadron linac are more and more common. The 5MeV test stand of CADS accelerator Injector I is composed of an ion source, a LEBT, a 325MHz RFQ, a MEBT, a cryogenic module (CM1) of seven SC spoke cavities (β=0.12) , seven SC solenoids, seven cold BPMs and a beam dump. The phase and amplitude setting of superconducting cavity are very important at the operation of accelerator, so beam based measurement of cavity phase and amplitude is necessary. Beam based phase scan is the most simple and effective method. Because the significant velocity changes in superconducting cavity at low energy section, the effective voltage is changing with cavity phase, meanwhile the synchronous phase is non-linear with LLRF phase. Above two problem make the cavity phase determination difficult. New date fitting method is proposed to solve these problem in this paper. Some measurements of spoke cavities in the CADS CM1 are also presented.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOY030
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MOPOY040	Design of the 100 MeV Proton Beam Line for Low Flux Application	target, octupole, vacuum, proton	938
	H.-J. Kwon, Y.-S. Cho, C.R. Kim, H.S. Kim, S.G. Lee, S. Lee, S.P. Yun Korea Atomic Energy Research Institute (KAERI), Gyeongbuk, Republic of Korea
	Funding: This work was supported by the Ministry of Science, ICT & Future Planning of the Korean Government. KOMAC has been operating two beam lines for user service since 2013. A new beam line was completed in 2015 for radioisotope production and has a plan to be commissioned in 2016. Another beam line was proposed to supply low flux beam to users. The maximum energy and average current are 100 MeV and 10 nA. The beam line consists of collimator, energy degrader, dipole magnet for energy separation and octupole magnet for uniform beam production. In this paper, the design of the beam line and its components is presented.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOY040
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THPMB015	Muon Charge Separation by Mixed Structure of Dipoles and Solenoids	solenoid, emittance, dipole, target	3257
	Y.P. Song, H.T. Jing, J.Y. Tang IHEP, Beijing, People's Republic of China
	A charge separation system comprised by dipoles and solenoids is described which aims to separate positive particles and negative particles apart in secondary beam with a large emittance and huge momentum spread, particularly for mixed-charge muon beams. Nonlinear effect and fringe field effect due to large aperture and large moment range are crucial under this circumstance, which make the charge separation extremely complicated. The design schemes by dipoles and bent solenoids and also simulation results are showed in the paper.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMB015
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THPMB027	Beam Transport Line of the LPA-FEL Facility Based on Transverse Gradient Undulator	FEL, undulator, radiation, laser	3287
	T. Liu, B. Liu, D. Wang, T. Zhang SINAP, Shanghai, People's Republic of China Z. Huang SLAC, Menlo Park, California, USA J.S. Liu Shanghai Institute of Optics and Fine Mechanics, Shanghai, People's Republic of China
	Free electron lasers (FELs) based on Laser Plasma Accelerators (LPAs) present a main research direction for achieving next generation compact advanced light sources. There are several major challenges of the LPA beam to generate high-brilliance FEL radiation including the large initial angular divergence and the large energy spread. Based on the LPA facility in SIOM that has successfully obtained quasi-monochromatic beam with the central energy of hundreds of MeV, a specific design of a beam transport line is proposed to realize FEL gain using Transverse Gradient Undulator to compensate the relatively large beam energy spread. This beamline uses a single dipole, several strong focusing quadrupoles and correcting sextupoles to match proper beta functions and linear dispersion from the LPA beam to FEL radiation. The corresponding experimental facility of LPA-FEL in SIOM has been set up and will perform first tests to generate FEL radiation.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMB027
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THPMB033	Beam Tracking on the High Energy Beam Transport Line in KHIMA Medical Machine	ion, optics, synchrotron, quadrupole	3302
	C.W. Park KIRAMS/KHIMA, Seoul, Republic of Korea D.H. An, H. Yim KIRAMS, Seoul, Republic of Korea
	The Korea Heavy Ion Medical Accelerator (KHIMA) launched the synchrotron based hadron beam therapy facility for combined medical cancer treatment and cancer related research. The Korea Institute of Radiological & Medical Sciences (KIRAMS) synchrotron system has been designed to accelerate the particle beams having the kinetic energy interval of 60-230 MeV proton and 110-430 MeV/u carbon ions respectively. An accelerated beam from the synchrotron is transported to the patient position through the High Energy Beam Transport (HEBT) lines. In the HEBT lines, the lattice was designed with beam optics codes. In order to check and confirm the beam loss at the HEBT lines, the tracking code, TRACK, has been used with encoded field map and also with simulated field map by Opera3D code. The performances are described and also compared with two methods for manufacturing the components in the HEBT lines.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMB033
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THPMB040	Charged Particle Transport, Gaussian Optics, Error Propagation: It's all the Same	optics, emittance, laser, electron	3324
	V.G. Ziemann Uppsala University, Uppsala, Sweden
	We derive a correspondence between the parameters used in Gaussian light beam propagation with wavelength, beam size, and wave front curvature to the description in terms of emittance and Twiss parameters commonly used in charged particle optics. Furthermore, we discuss the analogy of transporting beams to the propagation of measurement uncertainties.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMB040
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FRYAA02	ESS Progressing into Construction	linac, neutron, target, cryomodule	4266
	M. Lindroos, H. Danared, M. Eshraqi, R. Garoby, A. Jansson, Y.I. Levinsen, C.A. Martins, A. Ponton ESS, Lund, Sweden
	The construction of the European Spallation Source, ESS, started in summer 2014. At the site in Lund, the accelerator tunnel will be completed at the time of IPAC16, while prototyping and manufacturing or prepara-tions for manpower contributions are going on in more 23 laboratories distributed over the 12 European countries collaborating on the accelerator project. Major technical milestones have been reached include the testing of su-perconducting cavity prototypes of two families to values above design gradients, the first ESS modulator has been tested to 90 kV and the first klystron prototype has been received in April 2016. Equally important developments are taking place at many partner laboratories. The presen-tation will summarize the status of the ESS accelerator project by the time of IPAC16..
	Slides FRYAA02 [66.734 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-FRYAA02
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Paper

Title

Other Keywords

Page

MOPMR008

Development of Beam Position Monitor for a Heavy-ion Linac of KHIMA

proton, cyclotron, ion, synchrotron

238

J.G. Hwang
KIRAMS/KHIMA, Seoul, Republic of Korea
G. Hahn, T.K. Yang
KIRAMS, Seoul, Republic of Korea

Funding: This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIP) (no. NRF-2014M2C3A1029534).
The carbon and proton beams are produced by the electron cyclotron resonance ion source with the energy of 8 keV/u and it is accelerated up to 7 MeV/u by the RFQ and IH-DTL. The accelerated beam is injected on the synchrotron through the medium energy beam transport (MEBT). In the MEBT line of KHIMA, the stripline beam position monitor (BPM) is installed to measure the beam trajectory and orbit jitter before the beam injection at the synchrotron. It is also used to measure the phase information such as a bunch length for the de-buncher tuning in MEBT line. The BPM has the position resolution of 100 um with the diameter of 40 mm. The design study is performed and it is fabricated. In order to confirm the performance of the beam position monitor, the measurement of position accuracy and calibration by using wire test-bench, and the beam test with proton beam from MC-50 in KIRAMS are performed.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMR008

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MOPMR009

Development of Large Aperture Faraday-Cup for LEBT of KHIMA.

ion, electron, proton, ECR

241

J.G. Hwang
KIRAMS/KHIMA, Seoul, Republic of Korea
T.K. Yang
KIRAMS, Seoul, Republic of Korea

Funding: This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIP) (no. NRF-2014M2C3A1029534).
Since an aperture of a low energy beam transport line of the KHIMA is quite large, 100 mm, to minimize an uncontrolled beam loss, large aperture Faraday-cup with the diameter of 100 mm is installed to measure the beam current from the electron cyclotron resonance ion source (ECR-IS) and to identify the ion species using analyzing magnet. The suppression ring is designed to reduce the repelling electrons for an accurate measurement. The Faraday-cup has the cooling channel with the heat capability of 100 W to recover the heat from the ion beam for safety during the operation. In order to reduce the noise propagation from the cooling channel, the cooling channel is insulated with the cup. In this presentation, we show the physical modeling, mechanical aspect for design the large aperture Faraday-cup, and the result of in-beam test with the ECR-IS in KHIMA.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMR009

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MOPOY027

Emittance Measurement with Wire Scanners at C-ADS Injector-I

emittance, rfq, simulation, background

910

H. Geng, C. Meng, Y.F. Sui, F. Yan, L. Yu, Y.L. Zhao
IHEP, Beijing, People's Republic of China

The transverse emittance at C-ADS injector-I has been measured by the wire scanners at the Medium Energy Beam Transport-I (MEBT1). We have studied the effect of different fitting methods for obtaining the beam sizes on the emittance result, the result will be presented in this paper. The validation study of the quad-scan method with the presence of space charge effect at 10 mA will also be shown, and finally the quad-scan results will be compared with the multi-wire results.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOY027

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MOPOY030

Superconducting Cavity Phase and Amplitude Measurement in Low Energy Accelerating Section

LLRF, cavity, linac, superconducting-cavity

919

C. Meng, H. Geng, F. Yan, Y.L. Zhao
IHEP, Beijing, People's Republic of China

Superconducting linear accelerator is the tendency in linac design with the development of superconducting RF technology. Superconducting cavities used as accelerating section in low energy Hadron linac are more and more common. The 5MeV test stand of CADS accelerator Injector I is composed of an ion source, a LEBT, a 325MHz RFQ, a MEBT, a cryogenic module (CM1) of seven SC spoke cavities (β=0.12) , seven SC solenoids, seven cold BPMs and a beam dump. The phase and amplitude setting of superconducting cavity are very important at the operation of accelerator, so beam based measurement of cavity phase and amplitude is necessary. Beam based phase scan is the most simple and effective method. Because the significant velocity changes in superconducting cavity at low energy section, the effective voltage is changing with cavity phase, meanwhile the synchronous phase is non-linear with LLRF phase. Above two problem make the cavity phase determination difficult. New date fitting method is proposed to solve these problem in this paper. Some measurements of spoke cavities in the CADS CM1 are also presented.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOY030

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MOPOY040

Design of the 100 MeV Proton Beam Line for Low Flux Application

target, octupole, vacuum, proton

938

H.-J. Kwon, Y.-S. Cho, C.R. Kim, H.S. Kim, S.G. Lee, S. Lee, S.P. Yun
Korea Atomic Energy Research Institute (KAERI), Gyeongbuk, Republic of Korea

Funding: This work was supported by the Ministry of Science, ICT & Future Planning of the Korean Government.
KOMAC has been operating two beam lines for user service since 2013. A new beam line was completed in 2015 for radioisotope production and has a plan to be commissioned in 2016. Another beam line was proposed to supply low flux beam to users. The maximum energy and average current are 100 MeV and 10 nA. The beam line consists of collimator, energy degrader, dipole magnet for energy separation and octupole magnet for uniform beam production. In this paper, the design of the beam line and its components is presented.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOY040

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THPMB015

Muon Charge Separation by Mixed Structure of Dipoles and Solenoids

solenoid, emittance, dipole, target

3257

Y.P. Song, H.T. Jing, J.Y. Tang
IHEP, Beijing, People's Republic of China

A charge separation system comprised by dipoles and solenoids is described which aims to separate positive particles and negative particles apart in secondary beam with a large emittance and huge momentum spread, particularly for mixed-charge muon beams. Nonlinear effect and fringe field effect due to large aperture and large moment range are crucial under this circumstance, which make the charge separation extremely complicated. The design schemes by dipoles and bent solenoids and also simulation results are showed in the paper.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMB015

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THPMB027

Beam Transport Line of the LPA-FEL Facility Based on Transverse Gradient Undulator

FEL, undulator, radiation, laser

3287

T. Liu, B. Liu, D. Wang, T. Zhang
SINAP, Shanghai, People's Republic of China
Z. Huang
SLAC, Menlo Park, California, USA
J.S. Liu
Shanghai Institute of Optics and Fine Mechanics, Shanghai, People's Republic of China

Free electron lasers (FELs) based on Laser Plasma Accelerators (LPAs) present a main research direction for achieving next generation compact advanced light sources. There are several major challenges of the LPA beam to generate high-brilliance FEL radiation including the large initial angular divergence and the large energy spread. Based on the LPA facility in SIOM that has successfully obtained quasi-monochromatic beam with the central energy of hundreds of MeV, a specific design of a beam transport line is proposed to realize FEL gain using Transverse Gradient Undulator to compensate the relatively large beam energy spread. This beamline uses a single dipole, several strong focusing quadrupoles and correcting sextupoles to match proper beta functions and linear dispersion from the LPA beam to FEL radiation. The corresponding experimental facility of LPA-FEL in SIOM has been set up and will perform first tests to generate FEL radiation.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMB027

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THPMB033

Beam Tracking on the High Energy Beam Transport Line in KHIMA Medical Machine

ion, optics, synchrotron, quadrupole

3302

C.W. Park
KIRAMS/KHIMA, Seoul, Republic of Korea
D.H. An, H. Yim
KIRAMS, Seoul, Republic of Korea

The Korea Heavy Ion Medical Accelerator (KHIMA) launched the synchrotron based hadron beam therapy facility for combined medical cancer treatment and cancer related research. The Korea Institute of Radiological & Medical Sciences (KIRAMS) synchrotron system has been designed to accelerate the particle beams having the kinetic energy interval of 60-230 MeV proton and 110-430 MeV/u carbon ions respectively. An accelerated beam from the synchrotron is transported to the patient position through the High Energy Beam Transport (HEBT) lines. In the HEBT lines, the lattice was designed with beam optics codes. In order to check and confirm the beam loss at the HEBT lines, the tracking code, TRACK, has been used with encoded field map and also with simulated field map by Opera3D code. The performances are described and also compared with two methods for manufacturing the components in the HEBT lines.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMB033

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THPMB040

Charged Particle Transport, Gaussian Optics, Error Propagation: It's all the Same

optics, emittance, laser, electron

3324

V.G. Ziemann
Uppsala University, Uppsala, Sweden

We derive a correspondence between the parameters used in Gaussian light beam propagation with wavelength, beam size, and wave front curvature to the description in terms of emittance and Twiss parameters commonly used in charged particle optics. Furthermore, we discuss the analogy of transporting beams to the propagation of measurement uncertainties.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMB040

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FRYAA02

ESS Progressing into Construction

linac, neutron, target, cryomodule

4266

M. Lindroos, H. Danared, M. Eshraqi, R. Garoby, A. Jansson, Y.I. Levinsen, C.A. Martins, A. Ponton
ESS, Lund, Sweden

The construction of the European Spallation Source, ESS, started in summer 2014. At the site in Lund, the accelerator tunnel will be completed at the time of IPAC16, while prototyping and manufacturing or prepara-tions for manpower contributions are going on in more 23 laboratories distributed over the 12 European countries collaborating on the accelerator project. Major technical milestones have been reached include the testing of su-perconducting cavity prototypes of two families to values above design gradients, the first ESS modulator has been tested to 90 kV and the first klystron prototype has been received in April 2016. Equally important developments are taking place at many partner laboratories. The presen-tation will summarize the status of the ESS accelerator project by the time of IPAC16..

Slides FRYAA02 [66.734 MB]

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-FRYAA02

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