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JULE-PSI

The high temperature materials laboratory offers the infrastructure for the investigation of low radioactive materials in a controlled area and additionally houses three hot cells. The planning for new hot cells, housing amongst others the new linear plasma device JULE-PSI that is based on the facility PSI-2, has been completed. This facility will be equipped with a target exchange and an analysis chamber, in which samples can be investigated in vacuo after plasma loading and laser irradiation.

The high temperature materials laboratory offers the infrastructure for the investigation of low radioactive materials in a controlled area and additionally houses three hot cells. The planning for new hot cells, housing amongst others the new linear plasma device JULE-PSI that is based on the facility PSI-2, has been completed. This facility will be equipped with a target exchange and an analysis chamber, in which samples can be investigated in vacuo after plasma loading and laser irradiation.

The shielding by the hot cell allows handling of neutron irradiated materials from material test reactors as well as it would allow the characterization of samples coming from ITER. Furthermore and valid for the whole HML, also studies with toxic materials like beryllium can be performed.

In particular the concepts for the handling of the material samples, the diagnostics for plasma analyses as well as those for the analyses of the material properties after loading were developed based on well-established techniques at PSI-2.

For the optimization of the loading profile of the plasma beam (better homogeneity) the geometry of the plasma source and in particular the shape of the cathode has been modified: instead of the hollow cylinder a plate-shaped cathode will be used. The possibilities for monitoring the sample during exposition are significantly enhanced compared to PSI-2 due to a fully new design of the vacuum chamber. For JULE-PSI also a laser will be used for the application of transient thermal loads (pulse energy 100 J, pulse duration 1 ms).

Set-up and commissioning of JULE-PSI will be done outside of the controlled area of the HML and the transfer to the HML will occur as soon as the required infrastructure (hot cells) is available.

bild_forschung_psi-2_01

Konstruktionszeichnung von JULE-PSI.

Contact

Dr. Gerald Pintsuk

Telefon 02461 61-6383
Telefax 02461 61-6435
g.pintsuk@fz-juelich.de


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