27 August 2017 to 1 September 2017
RAI Congress Center, Amsterdam, The Netherlands
Europe/Amsterdam timezone

Influence of field cycle and applied current on coated conductor magentization and decay for accelerator applications

30 Aug 2017, 11:15
15m
Emerald Room

Emerald Room

Regular 15 minutes Oral Presentation F4 - ReBCO Wires and Cables Wed-Mo-Or21

Speaker

Mike Sumption (The Ohio State University)

Description

Coated conductors are now being considered for use in beam steering and focusing magnets for high energy particle accelerators. However, coated conductors and cables have substantial magnetization, important for field quality. Magnetization decay, although suppressed, is also important for field quality retention. In this work we investigate the influence of applied current and selected field cycle on magnetization and magnetization decay for YBCO coated conductors at low temperatures. Field cycles mimicking what would be experienced for accelerators were applied to the samples, including (1) starting a a high field, (2) dropping to a field between 0-1 T, and (3) increasing again to a field of 1 T. The magnetization and magnetization decay were measured as a function of the lower field point, and it was seen that while M could be suppressed with a conductor-specific lower field, time dependence (decay) was only partially reduced. Additionally, current of 0-100 A were applied and the influence of the magnetization for fields applied perpendicular to the tape surface were mapped as a function of lower field hold point and injected current.

Submitters Country usa

Primary authors

Mike Sumption (The Ohio State University) Cory Myers (Ohio State University) Prof. Ted Collings (MSE, The Ohio State University)

Presentation Materials