Speaker
Description
Abstract:
The SRF cavities for the electron storage ring of an Electron-Ion Collider (EIC) to be built at BNL are planned to operate continuous wave (CW) with beam currents ranging from 0.26 to 2.5A and energies from 5 to 18 GeV. Strong High Order Mode (HOM) damping is necessary to maintain beam stability. Our approach is to use Silicone Carbide (SiC) as a lossy dielectric located in the room-temperature beamlines adjacent to the SRF cavities to absorb the HOM power. Simulations predict up to 80 kW of CW HOM power per cavity during operation. This talk will briefly present plans and analysis to extract the HOM power from the SiC material into a water-cooled section of beampipe along with progress to date on the prototype fabrication of the Beam Line Absorbers (BLAs). Plans for low power and high power testing will also be presented.
Provocative Topics:
Beampipe vs waveguide or coaxial HOM coupling, very high HOM power absorbers, SRF cavity contamination from SiC particulate.
