HB2023 - List of Authors (Eshraqi, M.E.)

Paper	Title	Page
MOA2I3	Accelerator Challenges at ESS
	M.E. Eshraqi ESS, Lund, Sweden
	The European Spallation Source (ESS), undergoing concurrent installation, testing and beam commissioning in Lund, Sweden, will be the brightest source of cold neutrons once the driving proton linac reaches the intermediate energy of 800 MeV and a power of 2 MW. The final goal of ESS is to deliver a 2 GeV beam of protons with an average power of 5 MW to target. The high brightness of the neutron source is achieved by optimization of the rotating tungsten target and the innovative butterfly neutron moderator. The high beam power of the linac demands high-quality beam production, efficient acceleration, and near lossless transport of a high current beam. All of these impose strict requirements on the design and beam commissioning of this machine. The linac is being commissioned in several steps as the installation progresses. This talk presents the status of the project, challenges in the accelerator and updates on the beam commissioning.
	Slides MOA2I3 [19.436 MB]
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TUA3I3	ESS Normal Conducting Linac Commissioning Results	118
	Y. Levinsen, M.E. Eshraqi, N. Milas, R. Miyamoto, D. Noll ESS, Lund, Sweden
	The European Spallation Source is designed to be the world’s brightest neutron source once in operation, driven by a 5 MW proton linac. The linac consists of a normal conducting front end followed by a superconducting linac. The normal conducting part has been commissioned in several stages, with the latest stage involving all but one DTL tank now in 2023. During this commissioning period, we successfully transported a 50 us pulse of the nominal 62.5 mA beam current. We will present an overview of the commissioning results, with a focus on what we achieved in this latest stage.
	Slides TUA3I3 [31.400 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-HB2023-TUA3I3
About •	Received ※ 04 October 2023 — Revised ※ 11 October 2023 — Accepted ※ 13 October 2023 — Issued ※ 15 October 2023
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THBP22	On Liouvillian High Power Beam Accumulation	511
	J.-M. Lagniel GANIL, Caen, France M.E. Eshraqi, N. Milas ESS, Lund, Sweden
	Funding: This work is co-funded by the European Union It is acknowledged that the injection of high power proton beams into synchrotrons must be done using stripping injection of H⁻ beams which are accelerated by an injector, as done in many facilities worldwide such as ISIS, JPARC, SNS and CERN. However, this technique is not necessarily the only way of accumulation and in some cases might not represent the best choice. For example in the case of the ESSnuSB Accumulator Ring, accelerating the protons injecting them to the ring could represent savings in capital cost, reduced risk of losses in the linac and transfer lines and simplification to the overall project. This work presents the development of a method allowing to optimize the 4D Liouvillian accumulation of high-power proton and heavy ion beams and finishes with a discussion on the pros and cons of proton injection compared to more traditional H⁻ stripping injection method.
	Poster THBP22 [2.126 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-HB2023-THBP22
About •	Received ※ 01 October 2023 — Revised ※ 05 October 2023 — Accepted ※ 11 October 2023 — Issued ※ 28 October 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

MOA2I3

Accelerator Challenges at ESS

M.E. Eshraqi
ESS, Lund, Sweden

The European Spallation Source (ESS), undergoing concurrent installation, testing and beam commissioning in Lund, Sweden, will be the brightest source of cold neutrons once the driving proton linac reaches the intermediate energy of 800 MeV and a power of 2 MW. The final goal of ESS is to deliver a 2 GeV beam of protons with an average power of 5 MW to target. The high brightness of the neutron source is achieved by optimization of the rotating tungsten target and the innovative butterfly neutron moderator. The high beam power of the linac demands high-quality beam production, efficient acceleration, and near lossless transport of a high current beam. All of these impose strict requirements on the design and beam commissioning of this machine. The linac is being commissioned in several steps as the installation progresses. This talk presents the status of the project, challenges in the accelerator and updates on the beam commissioning.

Slides MOA2I3 [19.436 MB]

Cite •

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

TUA3I3

ESS Normal Conducting Linac Commissioning Results

118

Y. Levinsen, M.E. Eshraqi, N. Milas, R. Miyamoto, D. Noll
ESS, Lund, Sweden

The European Spallation Source is designed to be the world’s brightest neutron source once in operation, driven by a 5 MW proton linac. The linac consists of a normal conducting front end followed by a superconducting linac. The normal conducting part has been commissioned in several stages, with the latest stage involving all but one DTL tank now in 2023. During this commissioning period, we successfully transported a 50 us pulse of the nominal 62.5 mA beam current. We will present an overview of the commissioning results, with a focus on what we achieved in this latest stage.

Slides TUA3I3 [31.400 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-HB2023-TUA3I3

About •

Received ※ 04 October 2023 — Revised ※ 11 October 2023 — Accepted ※ 13 October 2023 — Issued ※ 15 October 2023

Cite •

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

THBP22

On Liouvillian High Power Beam Accumulation

511

J.-M. Lagniel
GANIL, Caen, France
M.E. Eshraqi, N. Milas
ESS, Lund, Sweden

Funding: This work is co-funded by the European Union
It is acknowledged that the injection of high power proton beams into synchrotrons must be done using stripping injection of H⁻ beams which are accelerated by an injector, as done in many facilities worldwide such as ISIS, JPARC, SNS and CERN. However, this technique is not necessarily the only way of accumulation and in some cases might not represent the best choice. For example in the case of the ESSnuSB Accumulator Ring, accelerating the protons injecting them to the ring could represent savings in capital cost, reduced risk of losses in the linac and transfer lines and simplification to the overall project. This work presents the development of a method allowing to optimize the 4D Liouvillian accumulation of high-power proton and heavy ion beams and finishes with a discussion on the pros and cons of proton injection compared to more traditional H⁻ stripping injection method.

Poster THBP22 [2.126 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-HB2023-THBP22

About •

Received ※ 01 October 2023 — Revised ※ 05 October 2023 — Accepted ※ 11 October 2023 — Issued ※ 28 October 2023

Cite •

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