IPAC2017 - List of Authors (Pisent, A.)

Paper	Title	Page
TUPVA087	ADIGE: The Radioactive Ion Beam Injector of the SPES Project	2281
	A. Galatà, L. Bellan, G. Bisoffi, M. Comunian, L. Martin, M.F. Moisio, A. Palmieri, A. Pisent, G.P. Prete, C. R. Roncolato INFN/LNL, Legnaro (PD), Italy
	The Selective Production of Exotic Species (SPES) project is presently under development at INFN-LNL: aim of this project is the production, ionization and post-acceleration of radioactive ions to perform forefront research in nuclear physics. An ECR-based charge breeder (SPES-CB) will allow post-acceleration of radioactive ions: in particular, the SPES-CB has been designed and developed by LPSC of Grenoble, based on the Phoenix booster. It will be equipped with a complete test bench totally integrated with the SPES beam line: this part of the post-accelerator, together with the newly designed RFQ, composes the so-called ADIGE injector for the superconducting linac ALPI. The injector will employ a unique Medium Resolution Mass Spectrometer (MRMS, R=1/1000), mounted downstream the SPES-CB, in order to avoid the typical drawback of the ECR-based charge breeding technique, that is the beam contamination. This contribution describes the ADIGE injector, with particular attention to the analysis of possible contaminations and the performances expected for the MRMS, showing the beam dynamics calculations for a reference radioactive beam.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPVA087
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THPIK017	Field Uniformity Preservation Strategies for the ESS DTL: Approach and Simulations	4139
	G.S. Mauro, F. Grespan, A. Palmieri, A. Pisent INFN/LNL, Legnaro (PD), Italy P. Mereu, M. Mezzano, C. Mingioni, M. Nenni INFN-Torino, Torino, Italy
	The Drift Tube Linac (DTL) of the European Spallation Source (ESS) is designed to operate at 352.2 MHz with a duty cycle of 4 % (3 ms pulse length, 14 Hz repetition period) and will accelerate a proton beam of 62.5 mA pulse peak current from 3.62 to 90 MeV. This paper presents the approach taken in order to preserve field flatness of DTL Tanks. This strategy required a set of simulations and consequent choices about RF design of DTL cells, RF coupler tuning and compensation, cooling of the DTL cells. Outcomes of these simulations and the experimental verifications of this approach are then explained.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPIK017
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THPIK032	Installation and Low Power Test of IFMIF-EVEDA RFQ at Rokkasho Site	4162
	E. Fagotti, L. Antoniazzi, A. Baldo, A. Battistello, L. Bellan, P. Bottin, M. Comunian, A. Conte, L. Ferrari, M.G. Giacchini, F. Grespan, M. Montis, A. Palmieri, A. Pisent, D. Scarpa INFN/LNL, Legnaro (PD), Italy D. Agguiaro, A.G. Colombo INFN- Sez. di Padova, Padova, Italy F. Borotto Dalla Vecchia, G. Dughera, G. Giraudo, P. Mereu, R. Panero INFN-Torino, Torino, Italy P. Cara, R. Heidinger Fusion for Energy, Garching, Germany M. Furini, C. Gessi INFN-Bologna, Bologna, Italy D. Gex F4E, Germany R. Ichimiya, Y. Ikeda, A. Kasugai, K. Kondo, S. O'hira, K. Sakamoto, T. Shinya, M. Sugimoto QST, Aomori, Japan J. Knaster, A. Marqueta, G. Pruneri, F. Scantamburlo IFMIF/EVEDA, Rokkasho, Japan
	The IFMIF-EVEDA RFQ is composed of 18 modules for a total length of 9.8 m and is designed to accelerate the 125 mA D⁺ beam up to 5 MeV at the frequency of 175 MHz. The RFQ is subdivided into three Super-Modules of six modules each. The Super-Modules were shipped to Rokkasho (Japan) at the beginning of 2016, pre-assembled 3 m far from the final location and tuned to reach target field flatness requirements. Just after conclusion of injector commissioning, the tuned RFQ was disassembled, moved and reassembled in the final location. After confirmation that field flatness was not affected by this movement, high power couplers were installed and tuned and all the structure was baked. Assembling, tuning and coupling results will be presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPIK032
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THPIK033	RF-Mechanical Design and Prototyping of the SPES RFQ	4166
	L. Ferrari, A. Palmieri, A. Pisent INFN/LNL, Legnaro (PD), Italy
	The SPES RFQ is designed in order to accelerate beams in CW with A/q ratios from 3 to 7 from the Charge Breeder through the MRMS and the selection and injection lines up to the MEBT. RFQ is composed of 6 modules about 1.2 m long each. Each module is basically composed of a Stainless Steel Tank and four OFE Copper Electrodes (obtained by brazing of two subassemblies in order to spare material). A copper layer is electrodeposited on the tank inner surface and a spring joint between tank and electrode is used in order to seal the RF. In this paper the main result of the design of the RFQ (with particular focus on the RF-mechanical aspects and thermo-structural calculations), the RFQ prototyping strategy as well as the construction and assembly procedure of RFQ modules are described.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPIK033
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THPVA046	Thermo Mechanical Study of the ESS DTL	4537
	P. Mereu, M. Mezzano, C. Mingioni, M. Nenni INFN-Torino, Torino, Italy F. Grespan, A. Palmieri, A. Pisent INFN/LNL, Legnaro (PD), Italy
	The Drift Tube Linac (DTL) of the European Spallation Source (ESS) is designed to operate at 352.2 MHz with a duty cycle of 4 % (3 ms pulse length, 14 Hz repetition period) and will accelerate a proton beam of 62.5 mA pulse peak current from 3.62 to 90 MeV. In this paper the main issues regarding the thermo-mechanical 3D details of the DTL are addressed and a Computational Fluid Dynamics (CFD) model is proposed and validated against the experimental data. The results of these simulations are used to properly design the DTL cooling system.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA046
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

ADIGE: The Radioactive Ion Beam Injector of the SPES Project

2281

A. Galatà, L. Bellan, G. Bisoffi, M. Comunian, L. Martin, M.F. Moisio, A. Palmieri, A. Pisent, G.P. Prete, C. R. Roncolato
INFN/LNL, Legnaro (PD), Italy

The Selective Production of Exotic Species (SPES) project is presently under development at INFN-LNL: aim of this project is the production, ionization and post-acceleration of radioactive ions to perform forefront research in nuclear physics. An ECR-based charge breeder (SPES-CB) will allow post-acceleration of radioactive ions: in particular, the SPES-CB has been designed and developed by LPSC of Grenoble, based on the Phoenix booster. It will be equipped with a complete test bench totally integrated with the SPES beam line: this part of the post-accelerator, together with the newly designed RFQ, composes the so-called ADIGE injector for the superconducting linac ALPI. The injector will employ a unique Medium Resolution Mass Spectrometer (MRMS, R=1/1000), mounted downstream the SPES-CB, in order to avoid the typical drawback of the ECR-based charge breeding technique, that is the beam contamination. This contribution describes the ADIGE injector, with particular attention to the analysis of possible contaminations and the performances expected for the MRMS, showing the beam dynamics calculations for a reference radioactive beam.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPVA087

Export •

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

THPIK017

Field Uniformity Preservation Strategies for the ESS DTL: Approach and Simulations

4139

G.S. Mauro, F. Grespan, A. Palmieri, A. Pisent
INFN/LNL, Legnaro (PD), Italy
P. Mereu, M. Mezzano, C. Mingioni, M. Nenni
INFN-Torino, Torino, Italy

The Drift Tube Linac (DTL) of the European Spallation Source (ESS) is designed to operate at 352.2 MHz with a duty cycle of 4 % (3 ms pulse length, 14 Hz repetition period) and will accelerate a proton beam of 62.5 mA pulse peak current from 3.62 to 90 MeV. This paper presents the approach taken in order to preserve field flatness of DTL Tanks. This strategy required a set of simulations and consequent choices about RF design of DTL cells, RF coupler tuning and compensation, cooling of the DTL cells. Outcomes of these simulations and the experimental verifications of this approach are then explained.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPIK017

Export •

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

THPIK032

Installation and Low Power Test of IFMIF-EVEDA RFQ at Rokkasho Site

4162

E. Fagotti, L. Antoniazzi, A. Baldo, A. Battistello, L. Bellan, P. Bottin, M. Comunian, A. Conte, L. Ferrari, M.G. Giacchini, F. Grespan, M. Montis, A. Palmieri, A. Pisent, D. Scarpa
INFN/LNL, Legnaro (PD), Italy
D. Agguiaro, A.G. Colombo
INFN- Sez. di Padova, Padova, Italy
F. Borotto Dalla Vecchia, G. Dughera, G. Giraudo, P. Mereu, R. Panero
INFN-Torino, Torino, Italy
P. Cara, R. Heidinger
Fusion for Energy, Garching, Germany
M. Furini, C. Gessi
INFN-Bologna, Bologna, Italy
D. Gex
F4E, Germany
R. Ichimiya, Y. Ikeda, A. Kasugai, K. Kondo, S. O'hira, K. Sakamoto, T. Shinya, M. Sugimoto
QST, Aomori, Japan
J. Knaster, A. Marqueta, G. Pruneri, F. Scantamburlo
IFMIF/EVEDA, Rokkasho, Japan

The IFMIF-EVEDA RFQ is composed of 18 modules for a total length of 9.8 m and is designed to accelerate the 125 mA D⁺ beam up to 5 MeV at the frequency of 175 MHz. The RFQ is subdivided into three Super-Modules of six modules each. The Super-Modules were shipped to Rokkasho (Japan) at the beginning of 2016, pre-assembled 3 m far from the final location and tuned to reach target field flatness requirements. Just after conclusion of injector commissioning, the tuned RFQ was disassembled, moved and reassembled in the final location. After confirmation that field flatness was not affected by this movement, high power couplers were installed and tuned and all the structure was baked. Assembling, tuning and coupling results will be presented.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPIK032

Export •

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

THPIK033

RF-Mechanical Design and Prototyping of the SPES RFQ

4166

L. Ferrari, A. Palmieri, A. Pisent
INFN/LNL, Legnaro (PD), Italy

The SPES RFQ is designed in order to accelerate beams in CW with A/q ratios from 3 to 7 from the Charge Breeder through the MRMS and the selection and injection lines up to the MEBT. RFQ is composed of 6 modules about 1.2 m long each. Each module is basically composed of a Stainless Steel Tank and four OFE Copper Electrodes (obtained by brazing of two subassemblies in order to spare material). A copper layer is electrodeposited on the tank inner surface and a spring joint between tank and electrode is used in order to seal the RF. In this paper the main result of the design of the RFQ (with particular focus on the RF-mechanical aspects and thermo-structural calculations), the RFQ prototyping strategy as well as the construction and assembly procedure of RFQ modules are described.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPIK033

Export •

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

THPVA046

Thermo Mechanical Study of the ESS DTL

4537

P. Mereu, M. Mezzano, C. Mingioni, M. Nenni
INFN-Torino, Torino, Italy
F. Grespan, A. Palmieri, A. Pisent
INFN/LNL, Legnaro (PD), Italy

The Drift Tube Linac (DTL) of the European Spallation Source (ESS) is designed to operate at 352.2 MHz with a duty cycle of 4 % (3 ms pulse length, 14 Hz repetition period) and will accelerate a proton beam of 62.5 mA pulse peak current from 3.62 to 90 MeV. In this paper the main issues regarding the thermo-mechanical 3D details of the DTL are addressed and a Computational Fluid Dynamics (CFD) model is proposed and validated against the experimental data. The results of these simulations are used to properly design the DTL cooling system.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA046

Export •

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