Speaker
Description
Ionization cooling is critical for a muon collider aiming to achieve high-luminosity $\mu^+\mu^-$ collisions. In the cooling channel, the reference lab-frame relativistic $\beta$ is between 0.88 and 0.93, in a regime where space charge effects cannot be ignored. The beam waist also varies substantially along the cooling channel, indicating that space charge effects may vary significantly throughout the cooling lattice. In this work, we use EM fields resolved with a commercial particle-in-cell (PIC) code and an in-house post-processing method to compute the wakefields of a rigid muon beam with transverse waist determined by the design lattice. We demonstrate that the space charge contribution to the composite wake can be significant when the beam transverse size is strongly compressed in later stages of the cooling channel.
| Working group | WG4 |
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