HB2023 - List of Authors (Brooks, S.J.)

Paper	Title	Page
TUC3I1	Ultra-low Emittance Bunches from Laser Cooled Ion Traps for Intense Focal Points	128
	S.J. Brooks BNL, Upton, New York, USA
	Laser-cooled ion traps are used to prepare groups of ions in very low temperature states, exhibiting such phenomena as Coulomb crystallization. This corresponds to very small normalized RMS emittances of 10^-13–10^-12 m, compared to typical accelerator ion sources in the 10^-7–10^-6 m range. Such bunches could potentially be focused a million times smaller, compensating for the lower number of ions per bunch. Such an ultra-low emittance source could enable high-specific-luminosity colliders where reduced beam current and apertures are needed to produce a given luminosity. Further advances needed to enable such colliders include linear, helical or ring cooling channel designs for increased bunch number or current throughput. Novel high density focal points using only a single bunch also appear possible, where the high density particles collide with themselves. At collider energies ~100 GeV, these approach the nuclear density and offer a way of studying larger quantities of neutron star matter and other custom nuclear matter in the lab.
	Slides TUC3I1 [167.328 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-HB2023-TUC3I1
About •	Received ※ 26 September 2023 — Revised ※ 06 October 2023 — Accepted ※ 11 October 2023 — Issued ※ 24 October 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THBP02	FFA Magnet for Pulsed High Power Proton Driver	436
	J.-B. Lagrange, C.W. Jolly, D.J. Kelliher, A.P. Letchford, S. Machida, I. Rodríguez, C.T. Rogers, J.D. Speed STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom S.J. Brooks BNL, Upton, New York, USA T.-J. Kuo Imperial College of Science and Technology, Department of Physics, London, United Kingdom
	Fixed Field Alternating gradient (FFA) accelerator is considered as a proton driver for the next generation spallation neutron source (ISIS-II). To demonstrate its suitability for high intensity operation, an FFA proton prototype ring is planned at RAL, called FETS-FFA. The main magnets are a critical part of the machine, and several characteristics of these magnets require attention, such as doublet spiral structure, essential operational flexibility in terms of machine optics and control of the fringe field extent from the nonlinear optics point of view. This paper will discuss the design of the prototype magnet for FETS-FFA ring.
	Poster THBP02 [5.871 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-HB2023-THBP02
About •	Received ※ 02 October 2023 — Revised ※ 08 October 2023 — Accepted ※ 12 October 2023 — Issued ※ 23 October 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Ultra-low Emittance Bunches from Laser Cooled Ion Traps for Intense Focal Points

128

S.J. Brooks
BNL, Upton, New York, USA

Laser-cooled ion traps are used to prepare groups of ions in very low temperature states, exhibiting such phenomena as Coulomb crystallization. This corresponds to very small normalized RMS emittances of 10^-13–10^-12 m, compared to typical accelerator ion sources in the 10^-7–10^-6 m range. Such bunches could potentially be focused a million times smaller, compensating for the lower number of ions per bunch. Such an ultra-low emittance source could enable high-specific-luminosity colliders where reduced beam current and apertures are needed to produce a given luminosity. Further advances needed to enable such colliders include linear, helical or ring cooling channel designs for increased bunch number or current throughput. Novel high density focal points using only a single bunch also appear possible, where the high density particles collide with themselves. At collider energies ~100 GeV, these approach the nuclear density and offer a way of studying larger quantities of neutron star matter and other custom nuclear matter in the lab.

Slides TUC3I1 [167.328 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-HB2023-TUC3I1

About •

Received ※ 26 September 2023 — Revised ※ 06 October 2023 — Accepted ※ 11 October 2023 — Issued ※ 24 October 2023

Cite •

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

THBP02

FFA Magnet for Pulsed High Power Proton Driver

436

J.-B. Lagrange, C.W. Jolly, D.J. Kelliher, A.P. Letchford, S. Machida, I. Rodríguez, C.T. Rogers, J.D. Speed
STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
S.J. Brooks
BNL, Upton, New York, USA
T.-J. Kuo
Imperial College of Science and Technology, Department of Physics, London, United Kingdom

Fixed Field Alternating gradient (FFA) accelerator is considered as a proton driver for the next generation spallation neutron source (ISIS-II). To demonstrate its suitability for high intensity operation, an FFA proton prototype ring is planned at RAL, called FETS-FFA. The main magnets are a critical part of the machine, and several characteristics of these magnets require attention, such as doublet spiral structure, essential operational flexibility in terms of machine optics and control of the fringe field extent from the nonlinear optics point of view. This paper will discuss the design of the prototype magnet for FETS-FFA ring.

Poster THBP02 [5.871 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-HB2023-THBP02

About •

Received ※ 02 October 2023 — Revised ※ 08 October 2023 — Accepted ※ 12 October 2023 — Issued ※ 23 October 2023

Cite •

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