IBIC2019 - List of Authors (Rodríguez Páramo, A.)

Paper	Title	Page
MOBO03	Overview of LIPAc Beam Instrumentation for the Initial Accelerator Commissioning
	D. Jiménez-Rey, J. Castellanos, J.M. García, D. Gavela, A. Ibarra, A. Marqueta, L.M. Martínez, J. Mollá, I. Podadera, A. Ros, R. Varela, V. Villamayor CIEMAT, Madrid, Spain P. Abbon, B. Bolzon, T. Chaminade, J.F. Denis, A. Gaget CEA-DRF-IRFU, France T. Akagi, K. Kondo, K. Sakamoto, Y. Shimosaki, M. Sugimoto, S. Takahiro QST, Aomori, Japan L. Bellan, M. Comunian, E. Fagotti, F. Grespan, M. Poggi, F. Scantamburlo INFN/LNL, Legnaro (PD), Italy P. Cara, A. Marqueta Fusion for Energy, Garching, Germany Y. Carin, H. Dzitko, A. Jokinen, I.M. Moya F4E, Germany J. Marroncle CEA-IRFU, Gif-sur-Yvette, France O. Nomen IREC, Sant Adria del Besos, Spain A. Rodríguez Páramo ESS Bilbao, Zamudio, Spain
	Funding: This work has been supported by the Spanish Government in the frame of the Broader Approach Agreement The commissioning of the high power deuterium accelerator of Linear IFMIF Prototype Accelerator, LIPAc, is presently under progress. During the so-called Phase B, the accelerator is operating with a high current pulsed proton and deuteron. The Phase B operation has the goals of fulfilling an exhaustive characterization of equipment and machine parameters in pulsed beam operation up to 5 MeV and 125 mA at Low Duty Cycle. The LIPAc beam diagnostics are aimed to demonstrate at this first stage of the commissioning the correct performance of the accelerator and are used for a complete characterization of the accelerator matching and tuning parameters. The characterization and calibration of beam diagnostics developed are providing relevant feedback of the accelerator operation. Measurements of the centroid position, beam profile, energy, intensity or emittance have been acquired and analyzed. The experimental results gathered have been compared with beam dynamics simulations. In this contribution, an overview of the main results provided by the beam diagnostics during Phase B operation in proton will be shown, together with the status of each instrument.
	Slides MOBO03 [13.512 MB]
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MOPP014	Design of the ESS MEBT Faraday Cup	106
	A. Rodríguez Páramo, I. Bustinduy, I. Mazkiaran, R. Miracoli, V. Toyos, S. Varnasseri, D. de Cos, C. de la Cruz ESS Bilbao, Zamudio, Spain E.M. Donegani, J.P.S. Martins ESS, Lund, Sweden
	The European Spallation Source (ESS) is currently under construction and the Medium Energy Beam Transfer (MEBT) is developed by ESS-Bilbao as an in-kind contribution. In the MEBT a set of diagnostics is included for beam characterization, among them the MEBT Faraday Cup is used to measure beam current and as a beam stopper for the commissioning modes. The main challenges for the design and manufacturing of the Faraday Cup are the high irradiation loads and the necessity of a compact design due to the space constraints in the MEBT. We describe the design of the FC, characterized by a graphite collector, required to withstand irradiation, and a repeller for suppression of secondary electrons. For the operation of the Faraday Cup acquisition electronics and control system are developed, all systems have been integrated in the ESS-Bilbao ECR ion source to test operation under beam conditions. In this work, we discuss the design of the Faraday Cup, the results of the tests and how they agree with the expected performance of the Faraday Cup.
	Poster MOPP014 [1.786 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP014
About •	paper received ※ 02 September 2019 paper accepted ※ 08 September 2019 issue date ※ 10 November 2019
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MOPP044	Status of the Faraday Cups for the ESS linac	205
	E.M. Donegani, C.S. Derrez, T.J. Grandsaert, T.J. Shea ESS, Lund, Sweden I. Bustinduy, A. Rodríguez Páramo ESS Bilbao, Zamudio, Spain
	The European Spallation Source (ESS) will be a 5 MW pulsed neutron source, relying on a 2 GeV linac delivering 2.86 ms long pulses with 14 Hz repetition rate. During the commissioning and the tuning phases of the ESS linac, four Faraday Cups (FC) serve as beam dumps and provide an absolute measurement of the proton beam current. This contribution summarizes the challenges in the design and production of all the FCs mainly requiring: - Thermo-mechanical analysis to keep heat load and mechanical stress below the mechanical limits; - Inclusion of an electron repeller to prevent the escape of secondary charged particles from the cup that would limit the accuracy of the current measurements; - Monte Carlo simulations to compute material activation, dose at contact and corresponding necessary shielding; - Design of high-resolution detection circuits for low current to fulfill the requirements on bandwidth, gain and noise. In addition, the performance of the LEBT FC during the commissioning of the ion source and LEBT is reported. The LEBT FC system is under continuous improvement and serves as benchmark for the protection from unwanted operation, and in case of actuator or cooling faults.
	Poster MOPP044 [1.121 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP044
About •	paper received ※ 04 September 2019 paper accepted ※ 08 September 2019 issue date ※ 10 November 2019
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TUPP006	Transverse Emittance Measurement of a 2.5 MeV Proton Beam on LIPAc, IFMIF’s Prototype	288
	J. Marroncle, P. Abbon, B. Bolzon, T. Chaminade, N. Chauvin, S. Chel, J.F. Denis, A. Gaget CEA-DRF-IRFU, France T. Akagi, K. Kondo, M. Sugimoto QST, Aomori, Japan L. Bellan, M. Comunian, E. Fagotti, F. Grespan, A. Pisent, F. Scantamburlo INFN/LNL, Legnaro (PD), Italy P. Cara IFMIF/EVEDA, Rokkasho, Japan H. Dzitko, D. Gex, A. Jokinen F4E, Germany J.M. García, D. Jiménez-Rey, A. Ros, V. Villamayor CIEMAT, Madrid, Spain A. Rodríguez Páramo ESS Bilbao, Zamudio, Spain
	IFMIF (International Fusion Materials Irradiation Fa-cility) is an accelerator-driven neutron source aiming at testing fusion reactor materials. Under the Broader Ap-proach Agreement, a 125 mA / 9 MeV CW deuteron accelerator called LIPAc (Linear IFMIF Prototype Accel-erator) is currently under installation and commissioning at Rokkasho, Japan, to validate the IFMIF accelerator. During the beam commissioning at 5 MeV which started in June 2018, the horizontal and vertical transverse emit-tance of a 2.5 MeV proton beam have been measured downstream of the RFQ for different machine configura-tions. Such measurements were done with an emittance measurement unit composed of slits defining a beamlet of 200 µm width, then of steerers and finally of a SEM grids monitor. In this paper, the process and the system are first described. The secondary electron emission of SEM-Grid wires is then estimated based on measure-ments and results are close to the usual rule of thumb. Finally, emittance measurements are presented and comparisons with beam dynamics simulations show good agreement.
	Poster TUPP006 [1.974 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-TUPP006
About •	paper received ※ 02 September 2019 paper accepted ※ 08 September 2019 issue date ※ 10 November 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPP013	Beam Commissioning of Beam Position and Phase Monitors for LIPAc	534
	I. Podadera, D. Gavela, A. Guirao, D. Jiménez-Rey, L.M. Martínez, J. Mollá, C. Oliver, R. Varela, V. Villamayor CIEMAT, Madrid, Spain T. Akagi, K. Kondo, Y. Shimosaki, T. Shinya, M. Sugimoto QST, Aomori, Japan L. Bellan, M. Comunian, F. Grespan, F. Scantamburlo INFN/LNL, Legnaro (PD), Italy P. Cara IFMIF/EVEDA, Rokkasho, Japan Y. Carin, H. Dzitko, D. Gex, A. Jokinen, I.M. Moya F4E, Germany A. Marqueta Fusion for Energy, Garching, Germany A. Rodríguez Páramo ESS Bilbao, Zamudio, Spain
	Funding: Work partially supported by the Spanish Ministry of Science and Innovation under project AIC-A-2011-0654 and FIS2013-40860-R The LIPAc accelerator is 9-MeV, 125-mA CW deuteron accelerator that aims to validate the technology that will be used in the future IFMIF accelerator (40-MeV, 2 x 125-mA CW). LIPAc is presently under beam commissioning of the second acceleration stage (injector and Radio Frequency Quadrupole) at 5 MeV. In this stage two types of BPM¿s are used: four stripline-type to control the transverse position and phase at the Medium Energy Beam Transport line (MEBT), and three other stripline-type mainly for the precise measurements of the mean beam energy at the Diagnostics Plate. All the BPM¿s have been successfully tested and served to increase the duty cycle and the average power of the beam delivered down to the beam dump. Moreover, the BPM¿s were key devices for the transverse beam positioning and longitudinal beam tuning and validation of the RFQ and re-buncher cavities at the MEBT. In this contribution, an overview of the beam position monitors system installation and characterization in the facility will be reported. First tests of the system with the upgraded acquisition electronics for the next phase will be also presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-WEPP013
About •	paper received ※ 04 September 2019 paper accepted ※ 09 September 2019 issue date ※ 10 November 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

MOBO03

Overview of LIPAc Beam Instrumentation for the Initial Accelerator Commissioning

D. Jiménez-Rey, J. Castellanos, J.M. García, D. Gavela, A. Ibarra, A. Marqueta, L.M. Martínez, J. Mollá, I. Podadera, A. Ros, R. Varela, V. Villamayor
CIEMAT, Madrid, Spain
P. Abbon, B. Bolzon, T. Chaminade, J.F. Denis, A. Gaget
CEA-DRF-IRFU, France
T. Akagi, K. Kondo, K. Sakamoto, Y. Shimosaki, M. Sugimoto, S. Takahiro
QST, Aomori, Japan
L. Bellan, M. Comunian, E. Fagotti, F. Grespan, M. Poggi, F. Scantamburlo
INFN/LNL, Legnaro (PD), Italy
P. Cara, A. Marqueta
Fusion for Energy, Garching, Germany
Y. Carin, H. Dzitko, A. Jokinen, I.M. Moya
F4E, Germany
J. Marroncle
CEA-IRFU, Gif-sur-Yvette, France
O. Nomen
IREC, Sant Adria del Besos, Spain
A. Rodríguez Páramo
ESS Bilbao, Zamudio, Spain

Funding: This work has been supported by the Spanish Government in the frame of the Broader Approach Agreement
The commissioning of the high power deuterium accelerator of Linear IFMIF Prototype Accelerator, LIPAc, is presently under progress. During the so-called Phase B, the accelerator is operating with a high current pulsed proton and deuteron. The Phase B operation has the goals of fulfilling an exhaustive characterization of equipment and machine parameters in pulsed beam operation up to 5 MeV and 125 mA at Low Duty Cycle. The LIPAc beam diagnostics are aimed to demonstrate at this first stage of the commissioning the correct performance of the accelerator and are used for a complete characterization of the accelerator matching and tuning parameters. The characterization and calibration of beam diagnostics developed are providing relevant feedback of the accelerator operation. Measurements of the centroid position, beam profile, energy, intensity or emittance have been acquired and analyzed. The experimental results gathered have been compared with beam dynamics simulations. In this contribution, an overview of the main results provided by the beam diagnostics during Phase B operation in proton will be shown, together with the status of each instrument.

Slides MOBO03 [13.512 MB]

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

MOPP014

Design of the ESS MEBT Faraday Cup

106

A. Rodríguez Páramo, I. Bustinduy, I. Mazkiaran, R. Miracoli, V. Toyos, S. Varnasseri, D. de Cos, C. de la Cruz
ESS Bilbao, Zamudio, Spain
E.M. Donegani, J.P.S. Martins
ESS, Lund, Sweden

The European Spallation Source (ESS) is currently under construction and the Medium Energy Beam Transfer (MEBT) is developed by ESS-Bilbao as an in-kind contribution. In the MEBT a set of diagnostics is included for beam characterization, among them the MEBT Faraday Cup is used to measure beam current and as a beam stopper for the commissioning modes. The main challenges for the design and manufacturing of the Faraday Cup are the high irradiation loads and the necessity of a compact design due to the space constraints in the MEBT. We describe the design of the FC, characterized by a graphite collector, required to withstand irradiation, and a repeller for suppression of secondary electrons. For the operation of the Faraday Cup acquisition electronics and control system are developed, all systems have been integrated in the ESS-Bilbao ECR ion source to test operation under beam conditions. In this work, we discuss the design of the Faraday Cup, the results of the tests and how they agree with the expected performance of the Faraday Cup.

Poster MOPP014 [1.786 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP014

About •

paper received ※ 02 September 2019 paper accepted ※ 08 September 2019 issue date ※ 10 November 2019

Export •

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

MOPP044

Status of the Faraday Cups for the ESS linac

205

E.M. Donegani, C.S. Derrez, T.J. Grandsaert, T.J. Shea
ESS, Lund, Sweden
I. Bustinduy, A. Rodríguez Páramo
ESS Bilbao, Zamudio, Spain

The European Spallation Source (ESS) will be a 5 MW pulsed neutron source, relying on a 2 GeV linac delivering 2.86 ms long pulses with 14 Hz repetition rate. During the commissioning and the tuning phases of the ESS linac, four Faraday Cups (FC) serve as beam dumps and provide an absolute measurement of the proton beam current. This contribution summarizes the challenges in the design and production of all the FCs mainly requiring: - Thermo-mechanical analysis to keep heat load and mechanical stress below the mechanical limits; - Inclusion of an electron repeller to prevent the escape of secondary charged particles from the cup that would limit the accuracy of the current measurements; - Monte Carlo simulations to compute material activation, dose at contact and corresponding necessary shielding; - Design of high-resolution detection circuits for low current to fulfill the requirements on bandwidth, gain and noise. In addition, the performance of the LEBT FC during the commissioning of the ion source and LEBT is reported. The LEBT FC system is under continuous improvement and serves as benchmark for the protection from unwanted operation, and in case of actuator or cooling faults.

Poster MOPP044 [1.121 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP044

About •

paper received ※ 04 September 2019 paper accepted ※ 08 September 2019 issue date ※ 10 November 2019

Export •

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

TUPP006

Transverse Emittance Measurement of a 2.5 MeV Proton Beam on LIPAc, IFMIF’s Prototype

288

J. Marroncle, P. Abbon, B. Bolzon, T. Chaminade, N. Chauvin, S. Chel, J.F. Denis, A. Gaget
CEA-DRF-IRFU, France
T. Akagi, K. Kondo, M. Sugimoto
QST, Aomori, Japan
L. Bellan, M. Comunian, E. Fagotti, F. Grespan, A. Pisent, F. Scantamburlo
INFN/LNL, Legnaro (PD), Italy
P. Cara
IFMIF/EVEDA, Rokkasho, Japan
H. Dzitko, D. Gex, A. Jokinen
F4E, Germany
J.M. García, D. Jiménez-Rey, A. Ros, V. Villamayor
CIEMAT, Madrid, Spain
A. Rodríguez Páramo
ESS Bilbao, Zamudio, Spain

IFMIF (International Fusion Materials Irradiation Fa-cility) is an accelerator-driven neutron source aiming at testing fusion reactor materials. Under the Broader Ap-proach Agreement, a 125 mA / 9 MeV CW deuteron accelerator called LIPAc (Linear IFMIF Prototype Accel-erator) is currently under installation and commissioning at Rokkasho, Japan, to validate the IFMIF accelerator. During the beam commissioning at 5 MeV which started in June 2018, the horizontal and vertical transverse emit-tance of a 2.5 MeV proton beam have been measured downstream of the RFQ for different machine configura-tions. Such measurements were done with an emittance measurement unit composed of slits defining a beamlet of 200 µm width, then of steerers and finally of a SEM grids monitor. In this paper, the process and the system are first described. The secondary electron emission of SEM-Grid wires is then estimated based on measure-ments and results are close to the usual rule of thumb. Finally, emittance measurements are presented and comparisons with beam dynamics simulations show good agreement.

Poster TUPP006 [1.974 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-TUPP006

About •

paper received ※ 02 September 2019 paper accepted ※ 08 September 2019 issue date ※ 10 November 2019

Export •

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

WEPP013

Beam Commissioning of Beam Position and Phase Monitors for LIPAc

534

I. Podadera, D. Gavela, A. Guirao, D. Jiménez-Rey, L.M. Martínez, J. Mollá, C. Oliver, R. Varela, V. Villamayor
CIEMAT, Madrid, Spain
T. Akagi, K. Kondo, Y. Shimosaki, T. Shinya, M. Sugimoto
QST, Aomori, Japan
L. Bellan, M. Comunian, F. Grespan, F. Scantamburlo
INFN/LNL, Legnaro (PD), Italy
P. Cara
IFMIF/EVEDA, Rokkasho, Japan
Y. Carin, H. Dzitko, D. Gex, A. Jokinen, I.M. Moya
F4E, Germany
A. Marqueta
Fusion for Energy, Garching, Germany
A. Rodríguez Páramo
ESS Bilbao, Zamudio, Spain

Funding: Work partially supported by the Spanish Ministry of Science and Innovation under project AIC-A-2011-0654 and FIS2013-40860-R
The LIPAc accelerator is 9-MeV, 125-mA CW deuteron accelerator that aims to validate the technology that will be used in the future IFMIF accelerator (40-MeV, 2 x 125-mA CW). LIPAc is presently under beam commissioning of the second acceleration stage (injector and Radio Frequency Quadrupole) at 5 MeV. In this stage two types of BPM¿s are used: four stripline-type to control the transverse position and phase at the Medium Energy Beam Transport line (MEBT), and three other stripline-type mainly for the precise measurements of the mean beam energy at the Diagnostics Plate. All the BPM¿s have been successfully tested and served to increase the duty cycle and the average power of the beam delivered down to the beam dump. Moreover, the BPM¿s were key devices for the transverse beam positioning and longitudinal beam tuning and validation of the RFQ and re-buncher cavities at the MEBT. In this contribution, an overview of the beam position monitors system installation and characterization in the facility will be reported. First tests of the system with the upgraded acquisition electronics for the next phase will be also presented.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-WEPP013

About •

paper received ※ 04 September 2019 paper accepted ※ 09 September 2019 issue date ※ 10 November 2019

Export •

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