Selection of the optimum magnet design for the International Linear Collider positron source helical undulator

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Selection of the optimum magnet design for the International Linear Collider positron source helical undulator

D. J. Scott, S. Appleton, J. A. Clarke, O. B. Malyshev, B. J. A. Shepherd, B. Todd, D. E. Baynham, T. Bradshaw, A. Brummitt, S. Carr, Y. Ivanyushenkov, J. Rochford, I. R. Bailey, P. Cooke, J. B. Dainton, L. I. Malysheva, D. P. Barber, and G. A. Moortgat-Pick

Phys. Rev. ST Accel. Beams 10, 032401 – Published 30 March 2007

Abstract

A comparison of possible undulator designs for the International Linear Collider positron source has resulted in a superconducting bifilar wire design being selected. After a comprehensive paper study and fabrication of the two preeminent designs, the superconducting undulator was chosen instead of the permanent magnet alternative. This was because of its superior performance in terms of magnetic field strength and quality, operational flexibility, risk of radiation damage, ease in achieving the required vacuum, and cost. The superconducting undulator design will now be developed into a complete system design for the full 200 m long magnet that is required.

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Received 24 August 2006

DOI:https://doi.org/10.1103/PhysRevSTAB.10.032401

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Authors & Affiliations

D. J. Scott^*,†,‡, S. Appleton^‡, J. A. Clarke^‡, O. B. Malyshev^‡, B. J. A. Shepherd^‡, and B. Todd

CCLRC Daresbury Laboratory, Daresbury, Warrington, Cheshire WA4 4AD, United Kingdom

D. E. Baynham, T. Bradshaw, A. Brummitt, S. Carr, Y. Ivanyushenkov, and J. Rochford

CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, United Kingdom

I. R. Bailey^‡, P. Cooke, J. B. Dainton^‡, and L. I. Malysheva^‡

Department of Physics, University of Liverpool, Oxford St., Liverpool, L69 7ZE, United Kingdom

D. P. Barber^‡

DESY-Hamburg, Notkestraße 85, 22607 Hamburg, Germany

G. A. Moortgat-Pick^‡

Institute of Particle Physics Phenomenology, University of Durham, Durham DH1 3LE, United Kingdom,
and CERN, CH-1211 Genève 23, Switzerland

^*Electronic address: d.j.scott@dl.ac.uk
^†Also at Department of Physics, University of Liverpool, Oxford St., Liverpool, L69 7ZE, UK.
^‡Also at The Cockcroft Institute, Daresbury Laboratory, Warrington, Cheshire, WA4 4AD, UK.

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Issue

Vol. 10, Iss. 3 — March 2007

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