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Figure 1: Degrader from the top when retracted. The wedges, which are moved against each other with copper jaws, are clearly visible.

A more efficient degrader for proton therapy

At PSI’s Center for Proton Therapy (CPT), protons are used to treat cancerous tumours in a highly targeted way that spares healthy tissue as much as possible. This is the result of the characteristic way in which charged particles interact with matter, so that a beam of protons deposits most of its energy at a certain depth in a material depending on the energy and the composition of the material. The dedicated medical cyclotron COMET accelerates protons to an energy of 250 MeV, which then have to be "slowed down" so that the energy matches the depth of the tumour to be treated.

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Ganter

Un alliage métallique aux allures d’éponge

Recherche avec la lumière Grands instruments de recherche SLS 2.0

Une fois que les chambres à vide ont la bonne forme, elles ont encore besoin d’un revêtement de surface bien particulier.

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René Sieber

Un four de six mètres de haut

Recherche avec la lumière Grands instruments de recherche SLS 2.0

Les versions les plus compliquées des chambres à vide destinées au projet de mise à jour SLS 2.0 sont fabriquées à l’atelier du PSI.

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