Jorge Giner: Application of high-gradient RF technologies
Channel: Instituto de Física Corpuscular (IFIC)
Date: 2015-06-09

Jorge Giner offered this talk on May 22, 2015, as part of the Student Seminars.

"Application of high-gradient RF technologies" by Jorge Giner (IFIC-UVEG/CSIC)

Significant progress has been made over the past decade by studies of normal-conducting linear colliders as NLC/JLC and CLIC, to rise achievable accelerating gradient from the range of 20-30 MV/m up to 100-120 MV/m.  In particular in the CLIC project, high gradients of 100 MV/m are needed in the RF accelerating structures, however undesired vacuum arcs affect negatively to beam transmission and collisions. These gradients, at very low breakdown rates, have been successfully achieved in numerous CLIC prototype accelerating structures. In this seminar, three generations of X-band high-power test stands at CERN (Xbox) are presented. Data is widely analysed in order to understand breakdown phenomena and the optimum way to condition cavities towards lower breakdown rates. 
High-Gradient technologies have also strong applications in medical hadron therapy accelerators, to significantly reduce the complexity and cost of the gantries and moveable heads, which are required to irradiate the patient from different angles, by directly mounting the linacs on them. This is the goal of the TULIP (Turning Linac for Protontherapy) project consisting on a single-room proton therapy facility. A new HG-RF laboratory is on construction in the Parc Cientific of the University of Valencia, in the framework of collaboration between the IFIC and CLIC in order to test this kind of structures. During the seminar, the high-power tests of these structures held at CERN will be presented.

More information http://indico.ific.uv.es/indico/conferenceDisplay.py?confId=2457