IBIC2016 - List of Keywords (rfq)

Paper	Title	Other Keywords	Page
MOPG33	Design of RISP RFQ Cooler Buncher	ion, emittance, extraction, injection	115
	R. Boussaid, S.A. Kondrashev, Y.H. Park IBS, Daejeon, Republic of Korea
	Under RISP project, wide variety of intense rare isotope ion beams will be provided. An EBIS charge breeder has been designed to charge breed these beams. Its optimum operation requires injection of bunched beam with high quality. An RFQ cooler buncher RFQCB is designed to meet these requirements. To meet the EBIS beam requirements, RFQCB should efficiently accept high intensity continuous beams and deliver to the EBIS bunched beams with small emittance (3 '.mm.mrad), low energy spread (< 10 eV) and short bunch width (2-10 μs). A new design concept to be implemented in this RFQCB have been developed, including a novel injection/extraction electrodes geometry, new RF voltages with frequency up to 10 MHz and amplitude up to 10 kV with improved differential pumping system. Simulations have shown the efficient handling of beam intensities which were never handled so far with improved beam quality. An overview of the RFQCB design concept will be presented. Simulated performance of the device and design of different sub-systems will be discussed. Beam parameters will be measured using Faraday cups and emittance meter. The design of these diagnostics tools will be described as well.
	Poster MOPG33 [1.931 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG33
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MOPG44	SNS RFQ Voltage Measurements Using X-Ray Spectrometer	shielding, radiation, background, electron	154
	A.P. Zhukov ORNL, Oak Ridge, Tennessee, USA
	Funding: ORNL/SNS is managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725. Absolute measurement of vane voltage is essential to understand RFQ transmission. We used a non-intrusive technique of bremsstrahlung X-ray measurement. Several windows were installed at SNS to allow measurement of the X-ray spectrum in different locations of the RFQ. A CdTe spectrometer was used to estimate spectrum cutoff energy that corresponds to the vane voltage. Different device setups are described as well as measurement accuracy and interpretation of experimental data.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG44
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MOPG77	Design and Application of the Wire Scanner for CADS Proton Beams	emittance, proton, instrumentation, controls	265
	L. Yu, J.S. Cao, H. Geng, C. Meng, Y.F. Sui IHEP, Beijing, People's Republic of China
	CADS Injector-I accelerator is a 10-mA 10-MeV CW proton linac, which uses a 3.2-MeV normal conducting 4-Vane RFQ and superconducting single-spoke cavities for accelerating. Eight wire scanners are designed and used to measure the beam profile of CADS Injector-I. In this paper principal of operation, instrumentation and programming of these wire scanners are discussed. Some results of beam profile and emittance measurement with these wire scanners are also presented.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG77
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TUPG34	First Results from the IPHI Beam Instrumentation	operation, proton, diagnostics, beam-diagnostic	413
	P. Ausset, M. Ben Abdillah, S. Berthelot, C. Joly, J. Lesrel, J.-F. Yaniche IPN, Orsay, France D. Bogard, B. Pottin, D. Uriot CEA/DSM/IRFU, France
	I.P.H.I. is a High Intensity Proton Injector (C.N.R.S/I.N.2P.3; C.E.A./Irfu and C.E.R.N. collaboration) located at Saclay and now on operation. An E.C.R. source produces a 100 keV, 100 mA C.W. proton beams which will be accelerated at 3 MeV by a 4 vanes R.F.Q. operating at 352.2 MHz. Finally, a High Energy Beam Transport Line (H.E.B.T.) delivers the beam to a beam stopper. The HEBT is equipped with appropriate beam diagnostics to carry beam current, centroid beam transverse position, transverse beam profiles, beam energy and energy spread measurements for the commissioning of I.P.H.I. These beam diagnostics operate under both pulsed and C.W. operation. However transverse beam profile measurements are acquired under low duty factor pulsed beam operation using a slow wire scanner. The beam instrumentation of the H.E.B.T. is reviewed and the first measurements at 3 MeV are described.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG34
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WEPG11	Operation of the Beam Position Monitor for the Spiral 2 Linac on the Test Bench of the RFQ	electronics, linac, operation, diagnostics	642
	P. Ausset, M. Ben Abdillah, F. Fournier IPN, Orsay, France S.K. Bharade, G. Joshi, P.D. Motiwala BARC, Trombay, Mumbai, India R. Ferdinand, D.T. Touchard GANIL, Caen, France
	The SPIRAL2 project is based on a multi-beam superconducting LINAC designed to accelerate 5 mA deuteron beams up to 40 MeV, proton beams up to 33 MeV and 1 mA light and heavy ions (Q/A = 1/3) up to 14.5 MeV/A. The accurate tuning of the LINAC is essential for the operation of SPIRAL2 and requires measurement of the beam transverse position, the phase of the beam with respect to the radiofrequency voltage, the ellipticity of the beam and the beam energy with the help of Beam Position Monitor (BPM) system. The commissioning of the RFQ gave us the opportunity to install a BPM sensor, associated with its electronics, mounted on a test bench. The test bench is a D-plate fully equipped with a complete set of beam diagnostic equipment in order to characterize as completely as possible the beam delivered by the RFQ and to gain experience with the behavior of these diagnostics under beam operation. This paper addresses the first measurements carried with the BPM on the D-plate: intensity, phase, transverse position and ellipticity under 750 keV proton beam operation
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG11
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WEPG29	Commissioning Results of the TOP-IMPLART 27 MeV Proton Linear Accelerator	proton, linac, DTL, booster	686
	P. Nenzi, A. Ampollini, G. Bazzano, L. Picardi, M. Piccinini, C. Ronsivalle, V. Surrenti, E. Trinca, M. Vadrucci ENEA C.R. Frascati, Frascati (Roma), Italy
	Funding: The work has been granted by Regione Lazio under the agreement "TOP-IMPLART Project" The results of a 27MeV proton LINAC commissioning are presented. The linac, operating at ENEA Frascati Research Center, consists of a 425MHz injector followed by a 3GHz booster. The injector is a commercial LINAC (ACCSYS-HITACHI PL7) composed by a duoplasmatron source with einzel lens, a 3MeV RFQ and a 7MeV DTL. Wide injection current range (0-1.5mA) is obtained varying extraction and lens potentials. The booster is a sequence of 3 SCDTL (Side Coupled DTL) modules with output energies of 11.6, 18 and 27MeV. Each module requires less than 2MW peak power in 4us length pulses. All modules are powered by a single klystron. The output beam has been characterized at 10Hz PRF. Fast AC transformers, Faraday cup and ionization chamber have been used for current/charge monitoring, while energy has been measured using a novel detector based on LiF crystals. Systematic measurements have been done to investigate the sensitivity of output beam to machine operating parameters (SCDTL temperatures, stability of injector and RF power) highlightning the existing correlations. The LINAC is part of a 150MeV protontherapy accelerator under development in the framework of the TOP-IMPLART Project.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG29
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WEPG39	Measurement Uncertainty Assessments of the SPIRAL2 ACCT/DCCT	controls, linac, electronics, site	712
	S.L. Leloir, T.A. Andre, C. Jamet, G. Ledu, S. Loret, C. Potier de courcy GANIL, Caen, France
	Four instrumentation chains with AC and DC Current Transformers (ACCT-DCCT) will equip the lines of SPIRAL2 facility to measure the beam intensity and line transmissions. These measures are essential to tune and supervise the beam, to assure the thermal protection of the accelerator and to control that the intensities and transmissions are below the authorized limits. As such, the uncertainties of measurement chains must be taken into account in the threshold values. The electronic has been designed with high requirements of quality and dependability by following different steps; from prototyping, the qualification through an Analysis of Failure Modes and Effects Analysis (FMEA) until final fabrication. This paper presents the measurement uncertainty assessments of the ACCT/DCCT chains.
	Poster WEPG39 [0.551 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG39
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WEPG42	Energy and Longitudinal Bunch Measurements at the SPIRAL2 RFQ Exit	proton, diagnostics, electron, ion	723
	C. Jamet, W.LC. Le Coz, G. Ledu, S. Loret, C. Potier de courcy GANIL, Caen, France
	A new step of the SPIRAL2 commissioning started in December 2015 with the acceleration of a first proton beam at the RFQ exit. A test bench, with all the different diagnostics which will be used on the SPIRAL2 accelerator, was installed directly after the first rebuncher of the MEBT line in order to qualify beams but also to test and make reliable the diagnostic monitors. In 2016, different ion beams are qualified by the diagnostic test bench. This paper describes the results of the energy measurements done by a Time of Flight monitor and the longitudinal measurements using a fast faraday cup.
	Poster WEPG42 [3.072 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG42
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WEPG45	Present Status of the Laser Charge Exchange Test Using the 3-MeV Linac in J-PARC	laser, proton, linac, experiment	736
	H. Takei, E. Chishiro, K. Hirano, Y. Kondo, S.I. Meigo, A. Miura, T. Morishita, H. Oguri, K. Tsutsumi JAEA/J-PARC, Tokai-mura, Japan
	The accelerator-driven system (ADS) is discussed as one of the efficient device to transmute long-lived nuclides. For the efficient transmutation of the minor actinide (MA), precise prediction of neutronic performance of ADS is indispensable. The Transmutation Physics Experimental Facility (TEF-P) aimed at obtaining experimental data for the accuracy improvement of neutronics evaluation of MA-loaded ADS. The critical assembly installed in TEF-P operates below 500 watt to prevent the excessive radio activation of assembly. For the separation of low power beam from J-PARC intense proton accelerator, the meticulous low power beam extraction method from high power proton beam is required. The laser charge exchange method (LCE) is originally developed to measure the proton beam profile and can be applied to the beam separation device for TEF-P. The LCE device consists of bright YAG-laser and laser transport system with beam position controllers. We performed the stability tests for laser power and position of exposure by no proton beam condition. The further LCE tests using negative 3-MeV proton linac in J-PARC will be conducted. In this paper, present status of LCE tests is presented.
	Poster WEPG45 [16.240 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG45
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Paper

Title

Other Keywords

Page

MOPG33

Design of RISP RFQ Cooler Buncher

ion, emittance, extraction, injection

115

R. Boussaid, S.A. Kondrashev, Y.H. Park
IBS, Daejeon, Republic of Korea

Under RISP project, wide variety of intense rare isotope ion beams will be provided. An EBIS charge breeder has been designed to charge breed these beams. Its optimum operation requires injection of bunched beam with high quality. An RFQ cooler buncher RFQCB is designed to meet these requirements. To meet the EBIS beam requirements, RFQCB should efficiently accept high intensity continuous beams and deliver to the EBIS bunched beams with small emittance (3 '.mm.mrad), low energy spread (< 10 eV) and short bunch width (2-10 μs). A new design concept to be implemented in this RFQCB have been developed, including a novel injection/extraction electrodes geometry, new RF voltages with frequency up to 10 MHz and amplitude up to 10 kV with improved differential pumping system. Simulations have shown the efficient handling of beam intensities which were never handled so far with improved beam quality. An overview of the RFQCB design concept will be presented. Simulated performance of the device and design of different sub-systems will be discussed. Beam parameters will be measured using Faraday cups and emittance meter. The design of these diagnostics tools will be described as well.

Poster MOPG33 [1.931 MB]

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG33

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MOPG44

SNS RFQ Voltage Measurements Using X-Ray Spectrometer

shielding, radiation, background, electron

154

A.P. Zhukov
ORNL, Oak Ridge, Tennessee, USA

Funding: ORNL/SNS is managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725.
Absolute measurement of vane voltage is essential to understand RFQ transmission. We used a non-intrusive technique of bremsstrahlung X-ray measurement. Several windows were installed at SNS to allow measurement of the X-ray spectrum in different locations of the RFQ. A CdTe spectrometer was used to estimate spectrum cutoff energy that corresponds to the vane voltage. Different device setups are described as well as measurement accuracy and interpretation of experimental data.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG44

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MOPG77

Design and Application of the Wire Scanner for CADS Proton Beams

emittance, proton, instrumentation, controls

265

L. Yu, J.S. Cao, H. Geng, C. Meng, Y.F. Sui
IHEP, Beijing, People's Republic of China

CADS Injector-I accelerator is a 10-mA 10-MeV CW proton linac, which uses a 3.2-MeV normal conducting 4-Vane RFQ and superconducting single-spoke cavities for accelerating. Eight wire scanners are designed and used to measure the beam profile of CADS Injector-I. In this paper principal of operation, instrumentation and programming of these wire scanners are discussed. Some results of beam profile and emittance measurement with these wire scanners are also presented.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG77

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TUPG34

First Results from the IPHI Beam Instrumentation

operation, proton, diagnostics, beam-diagnostic

413

P. Ausset, M. Ben Abdillah, S. Berthelot, C. Joly, J. Lesrel, J.-F. Yaniche
IPN, Orsay, France
D. Bogard, B. Pottin, D. Uriot
CEA/DSM/IRFU, France

I.P.H.I. is a High Intensity Proton Injector (C.N.R.S/I.N.2P.3; C.E.A./Irfu and C.E.R.N. collaboration) located at Saclay and now on operation. An E.C.R. source produces a 100 keV, 100 mA C.W. proton beams which will be accelerated at 3 MeV by a 4 vanes R.F.Q. operating at 352.2 MHz. Finally, a High Energy Beam Transport Line (H.E.B.T.) delivers the beam to a beam stopper. The HEBT is equipped with appropriate beam diagnostics to carry beam current, centroid beam transverse position, transverse beam profiles, beam energy and energy spread measurements for the commissioning of I.P.H.I. These beam diagnostics operate under both pulsed and C.W. operation. However transverse beam profile measurements are acquired under low duty factor pulsed beam operation using a slow wire scanner. The beam instrumentation of the H.E.B.T. is reviewed and the first measurements at 3 MeV are described.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG34

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WEPG11

Operation of the Beam Position Monitor for the Spiral 2 Linac on the Test Bench of the RFQ

electronics, linac, operation, diagnostics

642

P. Ausset, M. Ben Abdillah, F. Fournier
IPN, Orsay, France
S.K. Bharade, G. Joshi, P.D. Motiwala
BARC, Trombay, Mumbai, India
R. Ferdinand, D.T. Touchard
GANIL, Caen, France

The SPIRAL2 project is based on a multi-beam superconducting LINAC designed to accelerate 5 mA deuteron beams up to 40 MeV, proton beams up to 33 MeV and 1 mA light and heavy ions (Q/A = 1/3) up to 14.5 MeV/A. The accurate tuning of the LINAC is essential for the operation of SPIRAL2 and requires measurement of the beam transverse position, the phase of the beam with respect to the radiofrequency voltage, the ellipticity of the beam and the beam energy with the help of Beam Position Monitor (BPM) system. The commissioning of the RFQ gave us the opportunity to install a BPM sensor, associated with its electronics, mounted on a test bench. The test bench is a D-plate fully equipped with a complete set of beam diagnostic equipment in order to characterize as completely as possible the beam delivered by the RFQ and to gain experience with the behavior of these diagnostics under beam operation. This paper addresses the first measurements carried with the BPM on the D-plate: intensity, phase, transverse position and ellipticity under 750 keV proton beam operation

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG11

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WEPG29

Commissioning Results of the TOP-IMPLART 27 MeV Proton Linear Accelerator

proton, linac, DTL, booster

686

P. Nenzi, A. Ampollini, G. Bazzano, L. Picardi, M. Piccinini, C. Ronsivalle, V. Surrenti, E. Trinca, M. Vadrucci
ENEA C.R. Frascati, Frascati (Roma), Italy

Funding: The work has been granted by Regione Lazio under the agreement "TOP-IMPLART Project"
The results of a 27MeV proton LINAC commissioning are presented. The linac, operating at ENEA Frascati Research Center, consists of a 425MHz injector followed by a 3GHz booster. The injector is a commercial LINAC (ACCSYS-HITACHI PL7) composed by a duoplasmatron source with einzel lens, a 3MeV RFQ and a 7MeV DTL. Wide injection current range (0-1.5mA) is obtained varying extraction and lens potentials. The booster is a sequence of 3 SCDTL (Side Coupled DTL) modules with output energies of 11.6, 18 and 27MeV. Each module requires less than 2MW peak power in 4us length pulses. All modules are powered by a single klystron. The output beam has been characterized at 10Hz PRF. Fast AC transformers, Faraday cup and ionization chamber have been used for current/charge monitoring, while energy has been measured using a novel detector based on LiF crystals. Systematic measurements have been done to investigate the sensitivity of output beam to machine operating parameters (SCDTL temperatures, stability of injector and RF power) highlightning the existing correlations. The LINAC is part of a 150MeV protontherapy accelerator under development in the framework of the TOP-IMPLART Project.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG29

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WEPG39

Measurement Uncertainty Assessments of the SPIRAL2 ACCT/DCCT

controls, linac, electronics, site

712

S.L. Leloir, T.A. Andre, C. Jamet, G. Ledu, S. Loret, C. Potier de courcy
GANIL, Caen, France

Four instrumentation chains with AC and DC Current Transformers (ACCT-DCCT) will equip the lines of SPIRAL2 facility to measure the beam intensity and line transmissions. These measures are essential to tune and supervise the beam, to assure the thermal protection of the accelerator and to control that the intensities and transmissions are below the authorized limits. As such, the uncertainties of measurement chains must be taken into account in the threshold values. The electronic has been designed with high requirements of quality and dependability by following different steps; from prototyping, the qualification through an Analysis of Failure Modes and Effects Analysis (FMEA) until final fabrication. This paper presents the measurement uncertainty assessments of the ACCT/DCCT chains.

Poster WEPG39 [0.551 MB]

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG39

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WEPG42

Energy and Longitudinal Bunch Measurements at the SPIRAL2 RFQ Exit

proton, diagnostics, electron, ion

723

C. Jamet, W.LC. Le Coz, G. Ledu, S. Loret, C. Potier de courcy
GANIL, Caen, France

A new step of the SPIRAL2 commissioning started in December 2015 with the acceleration of a first proton beam at the RFQ exit. A test bench, with all the different diagnostics which will be used on the SPIRAL2 accelerator, was installed directly after the first rebuncher of the MEBT line in order to qualify beams but also to test and make reliable the diagnostic monitors. In 2016, different ion beams are qualified by the diagnostic test bench. This paper describes the results of the energy measurements done by a Time of Flight monitor and the longitudinal measurements using a fast faraday cup.

Poster WEPG42 [3.072 MB]

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG42

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WEPG45

Present Status of the Laser Charge Exchange Test Using the 3-MeV Linac in J-PARC

laser, proton, linac, experiment

736

H. Takei, E. Chishiro, K. Hirano, Y. Kondo, S.I. Meigo, A. Miura, T. Morishita, H. Oguri, K. Tsutsumi
JAEA/J-PARC, Tokai-mura, Japan

The accelerator-driven system (ADS) is discussed as one of the efficient device to transmute long-lived nuclides. For the efficient transmutation of the minor actinide (MA), precise prediction of neutronic performance of ADS is indispensable. The Transmutation Physics Experimental Facility (TEF-P) aimed at obtaining experimental data for the accuracy improvement of neutronics evaluation of MA-loaded ADS. The critical assembly installed in TEF-P operates below 500 watt to prevent the excessive radio activation of assembly. For the separation of low power beam from J-PARC intense proton accelerator, the meticulous low power beam extraction method from high power proton beam is required. The laser charge exchange method (LCE) is originally developed to measure the proton beam profile and can be applied to the beam separation device for TEF-P. The LCE device consists of bright YAG-laser and laser transport system with beam position controllers. We performed the stability tests for laser power and position of exposure by no proton beam condition. The further LCE tests using negative 3-MeV proton linac in J-PARC will be conducted. In this paper, present status of LCE tests is presented.

Poster WEPG45 [16.240 MB]

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG45

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