We are developing a vertical excursion FFA (vFFA) for a proton driver of a future spallation neutron source. vFFA could be made with small footprint than cyclotrons or conventional FFAs. Coupled optics may (or may not) help high intensity operation. We will present the status of vFFA design study at RAL.
A research project is ongoing at IBA to design an innovative compact high-intensity self-extracting cyclotron. The project, named InnovaTron, has received funding from the EU H2020 MSCA programme. In the self-extracting cyclotron, proton beams are extracted without any active device. A prototype cyclotron was built by IBA in 2001. Proton currents up to 2 mA were extracted from it. InnovaTron...
The IsoDAR project is a neutrino experiment that re-quires a high current molecular hydrogen beam at 60 MeV/amu, which will be produced by a cyclotron. A critical aspect of the design is the injection, which comprises an ion source, a compact low energy beam transport section (LEBT), and a radio-frequency quadrupole (RFQ) buncher embedded in the cyclotron yoke. The LEBT is optimized to match...
A recent trend in spiral inflector design is the use of transverse electric field gradients in order to influence the optics. These methods can improve the vertical focusing of the inflector and prevent longitudinal de-bunching, increasing the cyclotron transmission. Permanent magnet spiral inflectors offer a possible alternative for fixed-energy machines.
For the conventional electrostatic inflector, one of the limitation for the injection energy is the breakdown voltage between the 2 electrodes. To ensure the uniformity of the electric field, the aperture in a spiral inflector is small, which would also limits the injection intensity. To achieve high energy and high intensity injection. The magnetic inflector is a promising solution. In this...
Typically FFAs are tracked by numerical integration of the equations of motion through the fields, for example using Runge Kutta integration steps. Collective effects are applied at integration steps in the usual way. However, ideal FFAs are an excellent candidate for using a transfer map approach to tracking - transport is, by construction, entirely independent of particle momentum so that a...
The use of numerical models for beam dynamics studies is an essential step in the design process of particle accelerators. These studies demand precise simulation tools describing the movement of the particles subjected to external fields and the interactions with other particles, either within the beam or between the beam and the wall. All these present modeling challenges. Many computer...
TRIUMF hosts several high-power accelerators -- including the 500 MeV cyclotron and the 30 MeV electron linac --, a variety of primary and secondary beamlines, and rare ion beams post accelerators. The computer programs that we use to simulate the beam dynamics in these machines can be grouped into two categories, depending on whether they use a 'detailed' or a 'reduced' beam physics model....
