Speaker: Yuhi Waga
Abstract: In this study, a control device for vertical focusing force has been developed in the FFA. This device consists of multiple magnetic plates with different thicknesses (additional poles). The magnet length is changed with each radius by arranging the additional poles on the pole sides. The vertical focusing force can be controlled by changing the composition of the additional poles. In this presentation, the reason for the change in vertical tune of the magnetic field at the edge of the additional poles is presented. The control device, which makes use of the magnetic field at the edge of the additional poles, has been developed for the 150 MeV FFA. The experimental results showed that the beam loss due to resonance was reduced.
4 replies on “Study of a control method for vertical focusing force by using stair-like additional poles in the FFA”
Have the return yoke and magnetic shield modifications been added to the magnets, or is that going to be done in the future?
I’m currently in the process of calculation for the optimization. The goal is to actually modify the 150 MeV FFA next year.
Is there a way to introduce the correction coils instead of magnetic material and make the corrections required?
Dejan Trbojevic
Yes. But there are issues such as cost, heat, and the large number of power supplies required.