CSIC / IFIC – Instituto de Fisica Corpuscular (CSIC-UV)

Application of high gradient RF technology for hadron therapy accelerators

Trainee: Anna Vnuchenko
Supervisor: Juan Fuster Verdu

A new High-Gradient (HG) RF lab is being constructed at IFIC since 2016, under a FEDER-funded collaboration agreement between the University of Valencia and the Spanish General Administration (MINECO) for the building integration and the equipment of scientific instrumentation. The main objective of the laboratory is the study of vacuum breakdown phenomenology of 3GHz HG accelerating structures, in particular for medical applications. The current activities of the IFIC HG-RF laboratory are developed in collaboration with CERN RF CLIC group within the framework of the knowledge transfer group project ‘High-power testing of a medical high-gradient accelerating structure for proton therapy’, for the design and testing of novel HG structures for compact and efficient proton beam facilities for cancer therapy. In this context the main goal of this research project is contribution to testing and conditioning process, including breakdown studies of two novel high-power prototype 3 GHz accelerating structures commonly used in proton linacs. These accelerating structures are being built at CERN to prove the principle of HG acceleration of low energy protons required for hadron therapy. The Fellow will initially participate in the running of the CERN X-band testing facilities (Xboxes) including modulator, klystron and network conditioning and will collaborate in the operation of the test stand during structure measurements. On the basis of this experience she will then refine the optimization strategy of such a structure for hadron therapy. The experience acquired in the running of the Xboxes will serve to contribute to the finalization of the implementation of the HG-RF lab constructed in IFIC. The test of the two proton linac structures in the HG-RF test stand at IFICIFIMED labs of the University of Valencia will complement this work. It will include simulation of the most realistic conditions and running operation conditions for this kind of accelerating structures. Furthermore the Fellow will also participate in studies of other accelerating structures being tested in the HG-RF IFIC lab, such as the electron linac structures for VHEE radiotherapy applications.

Inductive BPM in CTF3-CERN

Image courtesy of CSIC/IFIC