LINAC2016 - List of Authors (Grespan, F.)

Paper	Title	Page
MOPLR059	Commissioning Plans for the ESS DTL	264
	M. Comunian, L. Bellan, F. Grespan, A. Pisent INFN/LNL, Legnaro (PD), Italy M. Eshraqi, R. Miyamoto ESS, Lund, Sweden
	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% (a beam pulse of 2.86 ms, 14 Hz repetition period) and will accelerate a proton beam of 62.5 mA pulse peak current from 3.62 to 90 MeV. This article describes the commissioning strategy plans for the DTL part of the linac, techniques for finding the RF set-point of the 5 tanks and steering approach. Typical beam parameters, as proposed for commissioning purposes, are discussed as well and how the commissioning sequence of the tanks fits together with ongoing installation works in the tunnel.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOPLR059
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MOPLR062	European Spallation Source (ESS) Normal Conducting Front End Status Report	274
	W. Wittmer, P.O. Gustavsson, F. Hellström, G. Hulla ESS, Lund, Sweden I. Bustinduy, P.J. González, G. Harper, S. Varnasseri, C. de la Cruz ESS Bilbao, Zamudio, Spain L. Celona, S. Gammino, L. Neri INFN/LNS, Catania, Italy A.C. Chauveau, D. Chirpaz-Cerbat CEA/IRFU, Gif-sur-Yvette, France F. Grespan, A. Pisent INFN/LNL, Legnaro (PD), Italy P. Mereu INFN-Torino, Torino, Italy O. Midttun University of Bergen, Bergen, Norway O. Piquet, B. Pottin CEA/DSM/IRFU, France
	The European Spallation Source (ESS) will deliver first protons on target by mid 2019. Civil construction of the accelerator tunnel has made good progress and will allow starting installation of the normal conducting frond end (NCFE) by end of 2017. To achieve these milestones the design of all major beam line components have been completed and the construction of the subsystems begun. We report on the advancement of the subsystems and the commissioning progress of the microwave discharge Proton Source (PS-ESS).
	Poster MOPLR062 [1.396 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOPLR062
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TUPRC002	ESS DTL Beam Dynamics Comparison Between S-Code and T-Code	411
	M. Comunian, L. Bellan, F. Grespan, A. Pisent INFN/LNL, Legnaro (PD), Italy L. Bellan Univ. degli Studi di Padova, Padova, 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 DTL beam dynamics comparison between the s-code TraceWin and the t-code Parmela is presented. Full field map of the permanent magnet quadrupoles (with COMSOL) and RF fields of each of the 5 tanks (with MDTFish) were used for the two programs.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUPRC002
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TUPRC005	Source and LEBT Beam Preparation for IFMIF-EVEDA RFQ	420
	L. Bellan, M. Comunian, E. Fagotti, F. Grespan, A. Pisent INFN/LNL, Legnaro (PD), Italy P.-Y. Beauvais, B. Bolzon, N. Chauvin CEA/DSM/IRFU, France L. Bellan Univ. degli Studi di Padova, Padova, Italy P. Cara Fusion for Energy, Garching, Germany H. Dzitko F4E, Germany R. Gobin, F. Senée CEA/DRF/IRFU, Gif-sur-Yvette, France R. Ichimiya, A. Kasugai, M. Sugimoto JAEA, Rokkasho, Japan A. Marqueta, F. Scantamburlo IFMIF/EVEDA, Rokkasho, Japan
	The commissioning phase of the IFMIF-EVEDA RFQ requires a complete beam characterization with simula-tions and measurements of the beam input from the IFMIF-EVEDA ion source and LEBT, in order to reach the RFQ input beam parameters. In this article, the simula-tions results of the complex source-LEBT with the corre-sponding set of measurements and their impact on the commissioning plan will be reported.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUPRC005
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THPLR049	Tuning the IFMIF 5MeV RFQ Accelerator	969
	A. Palmieri, F. Grespan, A. Pisent INFN/LNL, Legnaro (PD), Italy
	In order to allow proper operation of the IFMIF RFQ, it is necessary to perform a campaign of RF measurements on the cavity aimed, on one hand, at determining the basic RF parameters (frequency, Q0, etc.), on the other hand at verifying the fulfilment of the voltage law within the specified admitted range (±2% target value, ±4% acceptance value) of any of the perturbative components upon successive tuner settings as predicted by the tuner algorithm. These measurements also involve the determination of the proper depth of the end plates and the positioning and length of the Dipole Stabilizers (if any). In this contribution the tuning procedure and the results of such measurements will be presented for the case of the IFMIF RFQ will be described.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR049
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THPLR051	High-Power RF Test of IFMIF-EVEDA RFQ at INFN-LNL	975
	E. Fagotti, L. Antoniazzi, M.G. Giacchini, F. Grespan, M. Montis, A. Palmieri INFN/LNL, Legnaro (PD), Italy
	A partial test at full power and CW duty cycle will be performed at INFN-LNL on the last elements of the IFMIF RFQ, approximately two meters of structure, using a specific electromagnetic boundary element on the low energy end. The aim is to reach, in the RFQ coupled with its power coupler system, after an adequate period of conditioning, cw operation at nominal field level (132 kV between electrodes) for at least two hours without breakdown. The description of the experimental setup and procedure, as well as the main results of the conditioning procedure will be reported in this paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR051
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THPLR066	Preparation and Installation of IFMIF-EVEDA RFQ at Rokkasho Site	1005
	E. Fagotti, L. Antoniazzi, A. Baldo, A. Battistello, P. Bottin, L. Ferrari, M.G. Giacchini, F. Grespan, M. Montis, A. Pisent, D. Scarpa INFN/LNL, Legnaro (PD), Italy D. Agguiaro, A.G. Colombo, A. Pepato, L. Ramina INFN- Sez. di Padova, Padova, Italy F. Borotto Dalla Vecchia, G. Dughera, G. Giraudo, E.A. Macri, P. Mereu, R. Panero INFN-Torino, Torino, Italy
	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 pre-assembled, aligned and vacuum tested at INFN-LNL and then shipped to Rokkasho (Japan). At Rokkasho site a series of test were performed in order to verify the effect of the shipment on the cavity. The assembly debug, shipment equipment and the sequence of operations are described in this paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR066
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Paper

Title

Page

Commissioning Plans for the ESS DTL

264

M. Comunian, L. Bellan, F. Grespan, A. Pisent
INFN/LNL, Legnaro (PD), Italy
M. Eshraqi, R. Miyamoto
ESS, Lund, Sweden

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% (a beam pulse of 2.86 ms, 14 Hz repetition period) and will accelerate a proton beam of 62.5 mA pulse peak current from 3.62 to 90 MeV. This article describes the commissioning strategy plans for the DTL part of the linac, techniques for finding the RF set-point of the 5 tanks and steering approach. Typical beam parameters, as proposed for commissioning purposes, are discussed as well and how the commissioning sequence of the tanks fits together with ongoing installation works in the tunnel.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOPLR059

Export •

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

MOPLR062

European Spallation Source (ESS) Normal Conducting Front End Status Report

274

W. Wittmer, P.O. Gustavsson, F. Hellström, G. Hulla
ESS, Lund, Sweden
I. Bustinduy, P.J. González, G. Harper, S. Varnasseri, C. de la Cruz
ESS Bilbao, Zamudio, Spain
L. Celona, S. Gammino, L. Neri
INFN/LNS, Catania, Italy
A.C. Chauveau, D. Chirpaz-Cerbat
CEA/IRFU, Gif-sur-Yvette, France
F. Grespan, A. Pisent
INFN/LNL, Legnaro (PD), Italy
P. Mereu
INFN-Torino, Torino, Italy
O. Midttun
University of Bergen, Bergen, Norway
O. Piquet, B. Pottin
CEA/DSM/IRFU, France

The European Spallation Source (ESS) will deliver first protons on target by mid 2019. Civil construction of the accelerator tunnel has made good progress and will allow starting installation of the normal conducting frond end (NCFE) by end of 2017. To achieve these milestones the design of all major beam line components have been completed and the construction of the subsystems begun. We report on the advancement of the subsystems and the commissioning progress of the microwave discharge Proton Source (PS-ESS).

Poster MOPLR062 [1.396 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOPLR062

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TUPRC002

ESS DTL Beam Dynamics Comparison Between S-Code and T-Code

411

M. Comunian, L. Bellan, F. Grespan, A. Pisent
INFN/LNL, Legnaro (PD), Italy
L. Bellan
Univ. degli Studi di Padova, Padova, 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 DTL beam dynamics comparison between the s-code TraceWin and the t-code Parmela is presented. Full field map of the permanent magnet quadrupoles (with COMSOL) and RF fields of each of the 5 tanks (with MDTFish) were used for the two programs.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUPRC002

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TUPRC005

Source and LEBT Beam Preparation for IFMIF-EVEDA RFQ

420

L. Bellan, M. Comunian, E. Fagotti, F. Grespan, A. Pisent
INFN/LNL, Legnaro (PD), Italy
P.-Y. Beauvais, B. Bolzon, N. Chauvin
CEA/DSM/IRFU, France
L. Bellan
Univ. degli Studi di Padova, Padova, Italy
P. Cara
Fusion for Energy, Garching, Germany
H. Dzitko
F4E, Germany
R. Gobin, F. Senée
CEA/DRF/IRFU, Gif-sur-Yvette, France
R. Ichimiya, A. Kasugai, M. Sugimoto
JAEA, Rokkasho, Japan
A. Marqueta, F. Scantamburlo
IFMIF/EVEDA, Rokkasho, Japan

The commissioning phase of the IFMIF-EVEDA RFQ requires a complete beam characterization with simula-tions and measurements of the beam input from the IFMIF-EVEDA ion source and LEBT, in order to reach the RFQ input beam parameters. In this article, the simula-tions results of the complex source-LEBT with the corre-sponding set of measurements and their impact on the commissioning plan will be reported.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUPRC005

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THPLR049

Tuning the IFMIF 5MeV RFQ Accelerator

969

A. Palmieri, F. Grespan, A. Pisent
INFN/LNL, Legnaro (PD), Italy

In order to allow proper operation of the IFMIF RFQ, it is necessary to perform a campaign of RF measurements on the cavity aimed, on one hand, at determining the basic RF parameters (frequency, Q0, etc.), on the other hand at verifying the fulfilment of the voltage law within the specified admitted range (±2% target value, ±4% acceptance value) of any of the perturbative components upon successive tuner settings as predicted by the tuner algorithm. These measurements also involve the determination of the proper depth of the end plates and the positioning and length of the Dipole Stabilizers (if any). In this contribution the tuning procedure and the results of such measurements will be presented for the case of the IFMIF RFQ will be described.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR049

Export •

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

THPLR051

High-Power RF Test of IFMIF-EVEDA RFQ at INFN-LNL

975

E. Fagotti, L. Antoniazzi, M.G. Giacchini, F. Grespan, M. Montis, A. Palmieri
INFN/LNL, Legnaro (PD), Italy

A partial test at full power and CW duty cycle will be performed at INFN-LNL on the last elements of the IFMIF RFQ, approximately two meters of structure, using a specific electromagnetic boundary element on the low energy end. The aim is to reach, in the RFQ coupled with its power coupler system, after an adequate period of conditioning, cw operation at nominal field level (132 kV between electrodes) for at least two hours without breakdown. The description of the experimental setup and procedure, as well as the main results of the conditioning procedure will be reported in this paper.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR051

Export •

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

THPLR066

Preparation and Installation of IFMIF-EVEDA RFQ at Rokkasho Site

1005

E. Fagotti, L. Antoniazzi, A. Baldo, A. Battistello, P. Bottin, L. Ferrari, M.G. Giacchini, F. Grespan, M. Montis, A. Pisent, D. Scarpa
INFN/LNL, Legnaro (PD), Italy
D. Agguiaro, A.G. Colombo, A. Pepato, L. Ramina
INFN- Sez. di Padova, Padova, Italy
F. Borotto Dalla Vecchia, G. Dughera, G. Giraudo, E.A. Macri, P. Mereu, R. Panero
INFN-Torino, Torino, Italy

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 pre-assembled, aligned and vacuum tested at INFN-LNL and then shipped to Rokkasho (Japan). At Rokkasho site a series of test were performed in order to verify the effect of the shipment on the cavity. The assembly debug, shipment equipment and the sequence of operations are described in this paper.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR066

Export •

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