Hans Henrik Lohfert Jørgensen, Henning Laugerud & Laura Katrine Skinnebach (eds.): The Saturated Sensorium: Principles of Perception and Mediation in the Middle Ages

Opening with a highly pertinent cover illustration which shows the kneeling St. Bernard of Clairvaux receiving milk from the Virgin’s naked breast, the anthology The Saturated Sensorium seeks to demonstrate the central, yet paradoxical role assigned to the physical senses and material media in the quest for experience and knowledge of the spiritual and transcendent God in the Middle Ages. At a seminar in 2009, a group of Scandinavian scholars from various disciplines such as art history, archaeology, philology, church history, literature and media studies convened to discuss sense relations and media in the Middle Ages. The result is the present book containing an introductory chapter followed by ten essays

Recent progress in L-H transition studies at JET: Tritium, Helium, Hydrogen and Deuterium

We present an overview of results from a series of L-II transition experiments undertaken at JET since the installation of the ITER-like-wall (JET-ILW), with beryllium wall tiles and a tungsten divertor. Tritium, helium and deuterium plasmas have been investigated. Initial results in tritium show ohmic L-H transitions at low density and the power threshold for the L-H transition (P-LH) is lower in tritium plasmas than in deuterium ones at low densities, while we still lack contrasted data to provide a scaling at high densities. In helium plasmas there is a notable shift of the density at which the power threshold is minimum ((n) over bar (e,min)) to higher values relative to deuterium and hydrogen references. Above (n) over bar (e,min) (He) the L-H power threshold at high densities is similar for D and He plasmas. Transport modelling in slab geometry shows that in helium neoclassical transport competes with interchange-driven transport, unlike in hydrogen isotopes. Measurements of the radial electric field in deuterium plasmas show that E-r shear is not a good indicator of proximity to the L-H transition. Transport analysis of ion heat flux in deuterium plasmas show a non-linearity as density is decreased below (n) over bar (e,min). Lastly, a regression of the JET-ILW deuterium data is compared to the 2008 ITPA scaling law