IPAC2014 - List of Authors (Martel, I.)

Paper	Title	Page
MOPME059	Design of a Multi-harmonic Buncher for LINCE	508
	J. Labrador, C. Bonțoiu, J.A. Dueñas, I. Martel University of Huelva, Huelva, Spain M.A. Carrera, A. Garbayo AVS, Eibar, Gipuzkoa, Spain A.C.C. Villari FRIB, East Lansing, Michigan, USA
	Funding: Work partially supported by the Spanish Government (MINECO-CDTI) under program FEDER INTERCONNECTA. Continuous beams delivered by the LINCE ECR ion source will be bunched by a multi-harmonic buncher consisting of two copper-made electrodes. Its numerical design is reported here along with electric and magnetic field maps. Multi-frequency operation is proven by tracking a continuous beam and optimizing the its longitudinal phase space bunching for various ion species under the influence of space charge effects. A thermo-mechanical study carried out in order to estimate the needed water flow through the electrodes is presented as well.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPME059
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MOPRI013	Development of a 14.5 – 18 GHz ECR Ion Source at University of Huelva	607
	I. Martel, C. Bonțoiu, A.C.C. Villari University of Huelva, Huelva, Spain A. Garbayo AVS, Elgoibar, Spain A.C.C. Villari FRIB, East Lansing, Michigan, USA
	Funding: Work partially supported by the Spanish Government (MINECO-CDTI) under program FEDER INTERCONNECTA. A double-frequency ECR ion source has been modelled numerically for high-efficiency ion production from protons to uranium. The simulations were targeted at optimizing magnetic confinement of the hot electrons through an iterative design of three solenoids and a dodecapole. In addition a plasma production model has been implemented in order to study ion species yield from neutral gases and their drift towards the cold plasma regions. Eventually, ion extraction and beam capture in the space-charge regime have been performed. Mechanical design studies approached the plasma chamber cooling and magnet coils refrigeration.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI013
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THPME032	Beam Transfer Studies for LINCE Experimental Areas	3292
	L. Acosta, C. Bonțoiu, I. Martel, A.R. Pinto Gómez, A.C.C. Villari University of Huelva, Huelva, Spain J. Lucas Elytt Energy, Madrid, Spain A.C.C. Villari FRIB, East Lansing, Michigan, USA
	Funding: Work partially supported by the Spanish Government (MINECO-CDTI) under program FEDER INTERCONNECTA. Beam transport from the exit of the LINCE linac to experimental areas has been optimized for a few ion species using transfer matrix calculations performed in MADX. An alpha spectrometer based on a double-bending achromat lattice has been used as dispersion suppressor and particle tracking studies have been carried out in GPT along it and the three beamlines. Realistic quadrupole and dipole magnet design achieved in Comsol enabled accurate particle tracking studies and evaluation of the beam parameters delivered at the target.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME032
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THPME033	Particle Tracking Studies for the LINCE SC Linac	3295
	C. Bonțoiu, I. Martel University of Huelva, Huelva, Spain A. Falone TTI, Santander, Spain C. Gómez IDOM, Bilbao, Spain
	Funding: Work partially supported by the Spanish Government (MINECO-CDTI) under program FEDER INTERCONNECTA. LINCE facility makes use of a low-energy ion linac consisting of quarter-wave resonators designed for β = 0.045, 0.077 and 0.15 (72.75 and 10⁹.125 MHz), and shielded solenoid magnets distributed along four different cryomodules. Particle tracking studies have been performed along the linac using realistic electric and magnetic field maps with and without space charge effects to prove a final energy of 8.5 and 45 MeV/u respectively for uranium ions and protons.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME033
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THPME035	High-performance Accelerating Cryomodule for the LINCE Project	3298
	D. Gordo-Yáñez, R. Carrasco Dominguez, I. Martel, A.R. Pinto Gómez University of Huelva, Huelva, Spain C. Gómez IDOM, Bilbao, Spain
	Funding: Work partially supported by the Spanish Government (MINECO-CDTI) under program FEDER INTERCONNECTA. The linear accelerator of LINCE consists on 26 superconducting quarter-wave resonators with three different geometric betas working at 72.75 and 10⁹.125 MHz and three types of SC solenoids. In this paper we discuss the first cryomodule design based on thermal and mechanical studies carried out in COMSOL Multiphysics. This includes the design of cavity and solenoid cryostats, liquid-helium reservoir and layout of the cryogenic tank.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME035
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THPME036	ECOS-LINCE: A High Intensity Multi-ion Superconducting Linac for Nuclear Structure and Reactions	3301
	I. Martel, L. Acosta, R. Carrasco Dominguez, J.A. Dueñas, A.K. Orduz, A. Peregrin, J. Prieto-Thomas, J. Sanchez-Segovia, A.C.C. Villari University of Huelva, Huelva, Spain F. Azaiez IPN, Orsay, France G. De Angelis INFN/LNL, Legnaro (PD), Italy M. Lewitowicz GANIL, Caen, France A. Maj IFJ-PAN, Kraków, Poland P.N. Ostroumov ANL, Argonne, Illinois, USA A.C.C. Villari FRIB, East Lansing, Michigan, USA
	Funding: Work partially supported by the Spanish Government (MINECO-CDTI) under program FEDER INTERCONNECTA. During the past ten years, ECOS working group and users strongly supported the construction of a dedicated high-intensity stable-ion-beam facility in Europe, with energies at and above the Coulomb barrier as part of the Long-Range Plan of the Nuclear-Physics community. LINCE will be a multi-user facility dedicated to ECOS science: fundamental physics, astrophysics, nuclear structure and reaction dynamics. Applied research is foreseen in the fields of medical physics, aerospace and material sciences with energetic heavy ions. The facility will produce a wide range of ions, from protons (45 MeV) up to Uranium (8.5 MeV/u) with 1mA maximum beam intensity. A very compact linac has been designed by using a HV platform with a double-frequency ECR ion source, multi-harmonic buncher, an innovative CW RFQ design (1 ≤A/Q ≤ 7) and 26 accelerating cavities made of bulk niobium (β = 0.045, 0.077 and 0.15) working at 72.75 and 10⁹.125 MHz. This article gives an outline of the accelerator complex from the ion source to the experimental areas, and presents its research potential and the relevant physics instrumentation.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME036
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THPME037	Development of a 72.75 MHz RFQ for the LINCE Accelerator Complex	3304
SUSPSNE039	use link to see paper's listing under its alternate paper code
	A.K. Orduz, C. Bonțoiu, I. Martel, A.C.C. Villari University of Huelva, Huelva, Spain A. Garbayo AVS, Elgoibar, Spain P.N. Ostroumov ANL, Argonne, Illinois, USA A.C.C. Villari FRIB, East Lansing, Michigan, USA
	Funding: Work partially supported by the Spanish Government (MINECO-CDTI) under program FEDER INTERCONNECTA. Low-energy acceleration for the LINCE project [1] will be achieved using a 72.75 MHz normal conducting four vanes RFQ designed to give a 460 keV/u boost for A/Q = 7 ions in about 5 m. The vanes are modeled to accommodate windows for a clear separation of the RFQ modes and easy fitting to an octagonal resonance chamber. This article presents the main numerical results of the radio-frequency modeling and computational fluid dynamics (CFD). Particle tracking studies optimized for bunching and acceleration are shown as well. [1] I. Martel et al., “LINCE: A High Intensity Multi-ion Superconducting Linac for Nuclear Structure and Reactions”, IPAC’14, Dresden, Germany, June 2014, THPME036, These Proceedings.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME037
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Design of a Multi-harmonic Buncher for LINCE

508

J. Labrador, C. Bonțoiu, J.A. Dueñas, I. Martel
University of Huelva, Huelva, Spain
M.A. Carrera, A. Garbayo
AVS, Eibar, Gipuzkoa, Spain
A.C.C. Villari
FRIB, East Lansing, Michigan, USA

Funding: Work partially supported by the Spanish Government (MINECO-CDTI) under program FEDER INTERCONNECTA.
Continuous beams delivered by the LINCE ECR ion source will be bunched by a multi-harmonic buncher consisting of two copper-made electrodes. Its numerical design is reported here along with electric and magnetic field maps. Multi-frequency operation is proven by tracking a continuous beam and optimizing the its longitudinal phase space bunching for various ion species under the influence of space charge effects. A thermo-mechanical study carried out in order to estimate the needed water flow through the electrodes is presented as well.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPME059

Export •

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

MOPRI013

Development of a 14.5 – 18 GHz ECR Ion Source at University of Huelva

607

I. Martel, C. Bonțoiu, A.C.C. Villari
University of Huelva, Huelva, Spain
A. Garbayo
AVS, Elgoibar, Spain
A.C.C. Villari
FRIB, East Lansing, Michigan, USA

Funding: Work partially supported by the Spanish Government (MINECO-CDTI) under program FEDER INTERCONNECTA.
A double-frequency ECR ion source has been modelled numerically for high-efficiency ion production from protons to uranium. The simulations were targeted at optimizing magnetic confinement of the hot electrons through an iterative design of three solenoids and a dodecapole. In addition a plasma production model has been implemented in order to study ion species yield from neutral gases and their drift towards the cold plasma regions. Eventually, ion extraction and beam capture in the space-charge regime have been performed. Mechanical design studies approached the plasma chamber cooling and magnet coils refrigeration.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI013

Export •

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

THPME032

Beam Transfer Studies for LINCE Experimental Areas

3292

L. Acosta, C. Bonțoiu, I. Martel, A.R. Pinto Gómez, A.C.C. Villari
University of Huelva, Huelva, Spain
J. Lucas
Elytt Energy, Madrid, Spain
A.C.C. Villari
FRIB, East Lansing, Michigan, USA

Funding: Work partially supported by the Spanish Government (MINECO-CDTI) under program FEDER INTERCONNECTA.
Beam transport from the exit of the LINCE linac to experimental areas has been optimized for a few ion species using transfer matrix calculations performed in MADX. An alpha spectrometer based on a double-bending achromat lattice has been used as dispersion suppressor and particle tracking studies have been carried out in GPT along it and the three beamlines. Realistic quadrupole and dipole magnet design achieved in Comsol enabled accurate particle tracking studies and evaluation of the beam parameters delivered at the target.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME032

Export •

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

THPME033

Particle Tracking Studies for the LINCE SC Linac

3295

C. Bonțoiu, I. Martel
University of Huelva, Huelva, Spain
A. Falone
TTI, Santander, Spain
C. Gómez
IDOM, Bilbao, Spain

Funding: Work partially supported by the Spanish Government (MINECO-CDTI) under program FEDER INTERCONNECTA.
LINCE facility makes use of a low-energy ion linac consisting of quarter-wave resonators designed for β = 0.045, 0.077 and 0.15 (72.75 and 10⁹.125 MHz), and shielded solenoid magnets distributed along four different cryomodules. Particle tracking studies have been performed along the linac using realistic electric and magnetic field maps with and without space charge effects to prove a final energy of 8.5 and 45 MeV/u respectively for uranium ions and protons.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME033

Export •

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

THPME035

High-performance Accelerating Cryomodule for the LINCE Project

3298

D. Gordo-Yáñez, R. Carrasco Dominguez, I. Martel, A.R. Pinto Gómez
University of Huelva, Huelva, Spain
C. Gómez
IDOM, Bilbao, Spain

Funding: Work partially supported by the Spanish Government (MINECO-CDTI) under program FEDER INTERCONNECTA.
The linear accelerator of LINCE consists on 26 superconducting quarter-wave resonators with three different geometric betas working at 72.75 and 10⁹.125 MHz and three types of SC solenoids. In this paper we discuss the first cryomodule design based on thermal and mechanical studies carried out in COMSOL Multiphysics. This includes the design of cavity and solenoid cryostats, liquid-helium reservoir and layout of the cryogenic tank.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME035

Export •

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

THPME036

ECOS-LINCE: A High Intensity Multi-ion Superconducting Linac for Nuclear Structure and Reactions

3301

I. Martel, L. Acosta, R. Carrasco Dominguez, J.A. Dueñas, A.K. Orduz, A. Peregrin, J. Prieto-Thomas, J. Sanchez-Segovia, A.C.C. Villari
University of Huelva, Huelva, Spain
F. Azaiez
IPN, Orsay, France
G. De Angelis
INFN/LNL, Legnaro (PD), Italy
M. Lewitowicz
GANIL, Caen, France
A. Maj
IFJ-PAN, Kraków, Poland
P.N. Ostroumov
ANL, Argonne, Illinois, USA
A.C.C. Villari
FRIB, East Lansing, Michigan, USA

Funding: Work partially supported by the Spanish Government (MINECO-CDTI) under program FEDER INTERCONNECTA.
During the past ten years, ECOS working group and users strongly supported the construction of a dedicated high-intensity stable-ion-beam facility in Europe, with energies at and above the Coulomb barrier as part of the Long-Range Plan of the Nuclear-Physics community. LINCE will be a multi-user facility dedicated to ECOS science: fundamental physics, astrophysics, nuclear structure and reaction dynamics. Applied research is foreseen in the fields of medical physics, aerospace and material sciences with energetic heavy ions. The facility will produce a wide range of ions, from protons (45 MeV) up to Uranium (8.5 MeV/u) with 1mA maximum beam intensity. A very compact linac has been designed by using a HV platform with a double-frequency ECR ion source, multi-harmonic buncher, an innovative CW RFQ design (1 ≤A/Q ≤ 7) and 26 accelerating cavities made of bulk niobium (β = 0.045, 0.077 and 0.15) working at 72.75 and 10⁹.125 MHz. This article gives an outline of the accelerator complex from the ion source to the experimental areas, and presents its research potential and the relevant physics instrumentation.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME036

Export •

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

THPME037

Development of a 72.75 MHz RFQ for the LINCE Accelerator Complex

3304

SUSPSNE039

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

A.K. Orduz, C. Bonțoiu, I. Martel, A.C.C. Villari
University of Huelva, Huelva, Spain
A. Garbayo
AVS, Elgoibar, Spain
P.N. Ostroumov
ANL, Argonne, Illinois, USA
A.C.C. Villari
FRIB, East Lansing, Michigan, USA

Funding: Work partially supported by the Spanish Government (MINECO-CDTI) under program FEDER INTERCONNECTA.
Low-energy acceleration for the LINCE project [1] will be achieved using a 72.75 MHz normal conducting four vanes RFQ designed to give a 460 keV/u boost for A/Q = 7 ions in about 5 m. The vanes are modeled to accommodate windows for a clear separation of the RFQ modes and easy fitting to an octagonal resonance chamber. This article presents the main numerical results of the radio-frequency modeling and computational fluid dynamics (CFD). Particle tracking studies optimized for bunching and acceleration are shown as well.
[1] I. Martel et al., “LINCE: A High Intensity Multi-ion Superconducting Linac for Nuclear Structure and Reactions”, IPAC’14, Dresden, Germany, June 2014, THPME036, These Proceedings.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME037

Export •

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