CERN Accelerating science

Article
Report number	CERN-ATS-2010-162 ; CLIC-Note-853
Title	First Magnetic Tests of a Superconducting Damping Wiggler for the CLIC Damping Rings
Author(s)	Schoerling, D (CERN) ; Ams, A (T.U. Bergakademie Freiberg) ; Bernhard, A (Karlsruhe, Inst. Technol.) ; Karppinen, M (CERN) ; Maccaferri, R (CERN) ; Peiffer, P (Karlsruhe, Inst. Technol.) ; Rossmanith, R (Karlsruhe, Inst. Technol.)
Publication	2010
Imprint	01 Jun 2010
Number of pages	4
In:	1st International Particle Accelerator Conference, Kyoto, Japan, 23 - 28 May 2010, pp.WEPD039
Subject category	Accelerators and Storage Rings
Accelerator/Facility, Experiment	CLIC
Abstract	Each of the proposed CLIC electron and positron damping rings will be equipped with 76 wigglers. The length of each wiggler is 2 m, the period length lambda 40 to 50 mm, and the beam-stay-clear gap 13 mm. The minimum required mid-plane field B0 is 2.5 T, that can only be obtained with superconducting technologies. In order to demonstrate the feasibility of such a wiggler, a short model with a period length of 40mm was built and successfully tested at CERN. The measured mid-plane field was 2 T at 4.2K and 2.5 T at 1.9 K in the center of a 16mm gap. The currents were 730 and 910 A, respectively. To fulfill the field specification for the CLIC damping rings at 4.2 K it is planned to replace the Nb-Ti wire with a Nb$_{3}$Sn wire.
Copyright/License	publication: (License: CC-BY)

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