I.T. Chapman A. Kirk R.J. Akers C.J. Ham J.R. Harrison J. Hawke Y.Q. Liu K.G. McClements S. Pamela S. Saarelma R. Scannell A.J. Thornton The Mast Team
ELM mitigation has been demonstrated in MAST using resonant magnetic perturbations (RMPs) with toroidal mode number, n RM P = 2, 3, 4, 6. It has been observed that the mitigated ELM frequency increases with the amplitude of the applied field provided it is above a critical threshold. This threshold value depends on the mode number of the RMP, with …
PublishedJ. Hawke R. Scannell M. Maslov J. B. Migozzi JET-EFDA Contributors
This work isolated the cause of the observed discrepancy between the electron temperature (Te) measurements before and after the JET Core LIDAR Thomson Scattering (TS) diagnostic was upgraded. In the upgrade process, stray light filters positioned just before the detectors were removed from the system. Modelling showed that the shift imposed on the…
PublishedJ. Hawke R. Scannell J. Harrison R. Huxford P. Bohm
The super-X divertor on MAST Upgrade will be diagnosed by a Thomson scattering diagnostic. A preliminary design of the collection optics and calculations of the diagnostic’s performance are discussed in this paper. As part of the design the location and size of the collection cell were optimized to minimize vignetting, especially in the region of…
Published