Author Of 1 Presentation
PERSPECTIVES IN LINEAR ACCELERATOR FOR FLASH VHEE : STUDY OF A COMPACT C BAND SYSTEM
Abstract
Background and Aims
In order to translate the FLASH effect in clinical use and to treat deep tumors, Very High Electron Energy irradiations could represent a valid technique. Here, we address the main issues in the design of a VHEE FLASH machine. We present preliminary results for a compact C-band system aiming to reach a high accelerating gradient and high current necessary to deliver a dose up to 12 Gy/pulse, with a beam pulse duration of 3
Methods
The proposed system is composed by low energy high current injector linac followed by a high acceleration gradient structure able to reach 50-100 MeV energy range. To obtain the maximum energy, an energy pulse compressor options is considered. CST code was used to define the specifications RF parameters of the linac. To optimize the accelerated current and therefore the delivered dose, beam dynamics simulations was performed using Parmela code.
Results
The VHEE parameters Linac suitable to satisfy FLASH criteria were simulated. Preliminary results allow to obtain a maximum energy of 100 MeV, with a peak current of 200 mA, which corresponds to a charge of 200 nC per μs, or equivalently to about 4 Gy in a single pulse of 1µs and >106 Gy/s over a ∅10 cm irradiation surface.
Conclusions
A promising preliminary design of VHEE linac for FLASH RT has been performed. Supplementary studies are ongoing to complete the characterization of the machine and to manufacture and test the RF prototypes.