Book/Report

FZJ-2019-01319

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Judith - Jülicher Divertor Testanlage in den Heissen Zellen : eine Elektronenstrahlanlage für Materialtests

Duwe, R.FZJ* ; Kühnlein, W.FZJ* ; Linke, J.FZJ* ; Rödig, M.FZJ*

1996
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag Jülich

Please use a persistent id in citations: http://hdl.handle.net/2128/21579

Report No.: Juel-3183

Abstract: Testing of materials subjected to neutron irradiation will be carried out for fusion research programme at the KFA Jülich. An electron beam test apparatus $\underline{Ju}$elich $\underline{Di}$vertor $\underline{T}$est Equipment in $\underline{H}$ot Cells (JUDITH) has been instalied in the Hot Cells of the Zentralabteilung Forschungsreaktoren und Kerntechnische Betriebe, complementing the test equipment available in Japan, USA, France and RF. Gamma ray emitting specimens are to be tested under thermal shock, thermal cycling and long-term loading conditions. The apparatus consists of an electron beam unit with a beam power of 60 kW. The max. acceleration voltage is 150 kV, the max. beam current 400 mA. The beam can be deflected with a frequency of 100 kHz in xy-direction with an amplitude of ±50 mm. Short pulses between 1 and 10 ms for the simulation of disruptions are possible, also longer pulses on actively cooled sampies. The samples are positioned in a vacuum chamber by remote handling. The sample holder is mounted on a cross-table, allowing the appropriate beam position for each specimen to be defined. Actively cooled divertor elements can be inserted through a flange at the side of the chamber. The water cooling circuit has a flow rate of 5 m$^{3}$/h and apressure of 4 Mpa, enabling a continuous thermal power operation. To handle beryllium and highly radioactive components additional precautions has been taken. An inner vacuum chamber was instalied to avoid contamination of the electron beam unit as far as possible. To test small divertor mock-ups without integrated cooling circuit connectors a special clamping mechanism was instalied. The measurements of temperatures and material changes are performed by pyrometers, infrared camera systems, thermocouples and visual monitoring by video camera.

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Contributing Institute(s):

1. Publikationen vor 2000 (PRE-2000)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

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