Concept

Bolometer

Related publications (34)

Radiation distributions in TCV

Barbora Bruant Gulejová, Richard Pitts, Jan Horacek, Marco Wischmeier

Total radiative powers measured by foil bolometer and AXUV camera systems are compared to SOLPS5 simulations in low and high density deuterium and helium diverted discharges on the TCV tokamak. For low density the match between simulation and measurements ...

2007

Plasma dynamics with second and third-harmonic ECRH and access to quasi-stationary ELM-free H-mode on TCV

Ambrogio Fasoli, Stefano Coda, Timothy Goodman, Yves Martin, Stefano Alberti, Patrick Blanchard, Laurie Porte, Henri Weisen, Mikhail Maslov, Andrea Scarabosio, Gilles Arnoux, Alessandro Bortolon

Intense electron cyclotron resonance heating (ECRH) and electron cyclotron current drive (ECCD) are employed on the Tokamak a Configuration Variable (TCV) both in second- and third-harmonic X-mode (X2 and X3). The plasma behaviour under such conditions is ...

2007

ITER ECRH-ECCD system capabilities for extended physics applications

Hartmut Zohm, Emanuele Poli

The ability of ITER electron cyclotron (EC) wave launchers to drive localized current at various plasma locations is analyzed by means of beam-tracing codes, looking at extended physics application of EC current drive in ITER and at possible synergy betwee ...

2007

Advanced temperature compensation for piezoresistive sensors based on crystallographic orientation

Nico de Rooij, Terunobu Akiyama, Peter Vettiger, Laure Aeschimann

We describe a highly effective method of reducing thermal sensitivity in piezoresistive sensors, in particular silicon cantilevers, by taking advantage of the dependence of the piezoresistive coefficient of silicon on crystallographic orientation. Two simi ...

2007

Role of Adsorbates on Dynamics of Hot-Electron (type I and II) Thermalization within Gold Nanoparticles

Hubert Girault, Christophe Bauer, Jean-Pierre Abid

Early stages of hot-electron thermalization in small gold nanoparticles wrapped in an adsorbates shell have been investigated by femtosecond transient absorption spectroscopy. Type-I hot electrons thermalize in 800 fs (to form type-II hot electron) either ...

Elsevier2006

Density profile peaking in the presence of ECRH heating in TCV

Henri Weisen

Experimental observations in stationary ECRH discharges in TCV show that additional heating has a strong effect on the electron density profile. In the absence of MHD activity or strong internal transport barriers, additional electron heating generally lea ...

2006

Interaction between Light, Paper and Color Halftones: Challenges and Modelization Approaches

Roger Hersch, Mathieu Hébert

We review the phenomena having an impact on the interaction between light, paper and color halftones. They comprise surface reflections and refractions at the air-paper interface, propagation of light within the paper, internal reflections at the paper-air ...

IS&T2006

Size Dependence of Investigations of Hot Electron Cooling Dynamincs in Metal/Adsorbates Nanoparticles

Hubert Girault, Christophe Bauer, Jean-Pierre Abid

The size dependence of electron-phonon coupling rate has been investigated by femtosecond transient absorption spectroscopy for gold nanoparticles (NPs) wrapped in a shell of sulfate with diameter varying from 1.7 to 9.2 nm. Broad-band spectroscopy gives a ...

Elsevier2005

The design of an ECRH system for JET-EP

Timothy Goodman, Stefano Alberti, Hartmut Zohm

An electron cyclotron resonance heating (ECRH) system has been designed for JET in the framework of the JET enhanced performance project (JET-EP) under the European fusion development agreement. Due to financial constraints it has been decided not to imple ...

2003

Model for humpback relaxation oscillations

Olivier Sauter, Timothy Goodman, Ivo Furno, Holger Reimerdes, Antoine Pochelon, Roland Behn

An interpretation of non-standard, central MHD events in the TCV tokamak during localized ECRH is presented. It is shown that the non-standard behaviour is a consequence of specific features in the electron temperature profile produced when ECRH power is d ...

2000

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