Beam Dynamics Simulation for the High Intensity DAE{\delta}ALUS Cyclotrons

TL;DR

This paper presents detailed beam dynamics simulations for high-intensity DAE{ extdelta}ALUS cyclotrons, highlighting the effects of space charge and demonstrating feasible beam extraction at high currents.

Contribution

It provides the first comprehensive simulation analysis of space charge effects in DAE{ extdelta}ALUS cyclotrons, informing design and operation strategies.

Findings

Injector cyclotron is space charge dominated with 5mA beam current feasible.

No space charge induced beam loss observed in the ring cyclotron during acceleration.

Simulations support high-power proton beam extraction with manageable losses.

Abstract

In the DAE{\delta}ALUS (Decay-At-rest Experiment for {\delta}CP studies At the Laboratory for Underground Science) project, high power H+2 cyclotron chains are proposed to efficiently provide proton beams with a kinetic energy of 800 MeV and an average power in the MW range. Space charge plays a pivotal role in both the injector and the ring cyclotrons. Large-scale particle simulations show that the injector cyclotron is a space charge dominated cyclotron and that a 5mA beam current can be extracted with tolerable beam losses on the septum. In contrast, in the ring cyclotron, no space charge induced beam loss is observed during acceleration and extraction.