Related Experiment Video
Updated: May 24, 2026

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
Published on: February 6, 2019
A Tandetron™ as proton injector for the eye tumor therapy in Berlin
1Protons for Therapy, Helmholtz-Zentrum Berlin für Materialien und Energie, 14109 Berlin, Germany. roehrich@helmholtz-berlin.de
Abstract:
The therapy of eye tumors with fast protons is an excellent tool giving very high local control rates. At the Helmholtz-Zentrum Berlin (HZB) almost 1800 patients were treated since 1998. A 2 MV Tandetron™ was installed as injector for the k = 132 HZB cyclotron. Using the standard 358 duoplasmatron ion source with direct extraction of negative hydrogen ions an extremely stable proton beam can be delivered, both on the short-term and the long-term scale. The hair-needle filaments made from thoriated tungsten wires have safe operation times of more than 1000 h.
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