Design and system integration of the superconducting wiggler magnets for the Compact Linear Collider damping rings

Schoerling, Daniel; Antoniou, Fanouria; Bernhard, Axel; Bragin, A.V.; Karppinen, M.; Maccaferri, R.; Mezentsev, N. A.; Papaphilippou, Y.; Peiffer, P.; Rossmanith, R.; Rumolo, G.; Russenschuck, Stephan; Vobly, P.D.; Zolotarev, K.V.

doi:10.1103/physrevstab.15.042401

Cited by 12 publications

(9 citation statements)

References 19 publications

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“…In the case of CLIC, the steady state emittance is dominated by Intra-Beam Scattering (IBS). The ring energy [97] and lattice design [96], (racetrack shape with TME arc cells with variable field dipoles [98] and long straight sections filled with super-conducting wiggler [99] FODOs) is optimized for reducing IBS. The larger emittance specification of ILC, allows for higher ring energy, thus relaxing collective effects.…”

Section: Low Emittance Generationmentioning

confidence: 99%

Design and Principles of Linear Accelerators and Colliders

Seeman

Schulte

Delahaye

et al. 2020

Particle Physics Reference Library

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Section: Low Emittance Generationmentioning

confidence: 99%

Design and Principles of Linear Accelerators and Colliders

Seeman

Schulte

Delahaye

et al. 2020

Particle Physics Reference Library

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“…It was shown that by targeting higher wiggler fields not only the emittance but also the IBS effect can be reduced [16,17]. Taking into account the optimization of the arc cells and the fact that the emittance with IBS is significantly lowered after increasing the wiggler's peak field, the FODO cells per LSS can be reduced from 13 down to 10.…”

Section: A Optimization Of the Arc Tme Cellmentioning

confidence: 99%

Emittance reduction with variable bending magnet strengths: Analytical optics considerations and application to the Compact Linear Collider damping ring design

Papadopoulou

Antoniou

Papaphilippou

2019

Phys. Rev. Accel. Beams

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One of the main challenges of the lattice design of e + e − synchrotrons, used as light sources or damping rings, is the minimization of the emittance. The optimal configurations for achieving the absolute minimum emittance are the theoretical minimum emittance (TME) cells. This paper elaborates the optimization strategy in order to further reduce the betatron emittance of a TME cell by using dipoles whose magnetic field varies longitudinally. Based on the analytical results, the magnet design for the fabrication of variable bend with the optimal characteristics is discussed. In order to have a global understanding of all cell properties, the analytical approach for the theoretical minimum emittance (TME) cells with variable bends is presented. Numerical examples for the linear optimization of the Compact Linear Collider (CLIC) damping rings (DRs) are shown. The margin provided by this new design strategy on the output beam parameters after including the dominant effect of intrabeam scattering, enables the removal of a number of TME cells from the existing arcs while still keeping the requirements of the collider. The reduction of the circumference is further enhanced by the use of optimized high-field wigglers. The optimization strategy followed for the CLIC DRs is explained in detail and the output parameters of the new design are presented.

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“…The damping wigglers are necessary to achieve the low emittance within a fast damping time, in order to fit into the 50 Hz repetition rate of the collider. Permanent magnet wigglers of B w =1.9 T peak field and λ w =5 cm period provide the fast damping time and the required output emittance [13]. For the optimization of the CLIC PDR lattice design low chromaticity solutions are of interest, as the design is focused on the dynamic aperture optimization.…”

Section: Application To the Clic Pdr Designmentioning

confidence: 99%

Analytical considerations for linear and nonlinear optimization of the theoretical minimum emittance cells: Application to the Compact Linear Collider predamping rings

Antoniou

Papaphilippou

2014

Phys. Rev. ST Accel. Beams

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The theoretical minimum emittance cells are the optimal configurations for achieving the absolute minimum emittance, if specific optics constraints are satisfied at the middle of the cell's dipole.Linear lattice design options based on an analytical approach for the theoretical minimum emittance cells are presented in this paper. In particular the parametrization of the quadrupole strengths and optics functions with respect to the emittance and drift lengths is derived. A multi-parametric space can be then created with all the cell parameters, from which one can chose any of them to be optimized. An application of this approach are finally presented for the linear and non-linear optimization of the CLIC Pre-damping rings.

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Design and system integration of the superconducting wiggler magnets for the Compact Linear Collider damping rings

Cited by 12 publications

References 19 publications

Design and Principles of Linear Accelerators and Colliders

Design and Principles of Linear Accelerators and Colliders

Emittance reduction with variable bending magnet strengths: Analytical optics considerations and application to the Compact Linear Collider damping ring design

Analytical considerations for linear and nonlinear optimization of the theoretical minimum emittance cells: Application to the Compact Linear Collider predamping rings

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