Ferrite-lined hom absorber for the e-cool erl

An R&D Energy Recovery Linac (ERL) intended as step towards electron-cooling of RHIC-II is being constructed at this laboratory. The center piece of the project is the experimental 5-cell 703.75 MHz superconducting "ECX" cavity. Successful operation will depend on effective HOM suppres...

Full description

Saved in:
Bibliographic Details
Main Authors: Hahn, H., Hammons, L., Naik, D.
Format: Conference Proceeding
Language:English
Subjects:
Assembly
Copper
Damping
Ferrites
Laboratories
Linear particle accelerator
Resonance
Superconducting microwave devices
Temperature dependence
Testing
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An R&D Energy Recovery Linac (ERL) intended as step towards electron-cooling of RHIC-II is being constructed at this laboratory. The center piece of the project is the experimental 5-cell 703.75 MHz superconducting "ECX" cavity. Successful operation will depend on effective HOM suppression, and it is planned to achieve HOM damping exclusively with room temperature ferrite absorbers. A ferrite-lined pillbox test model with dimensions reflecting the operational unit was assembled and attached to the 5-cell copper cavity. The cavity resonances of the lowest dipole and monopole modes and their damping due to the ferrite were determined. The effective ferrite properties in a form portable to other structures were obtained from network analyzer measurements of the ferrite absorber models and their interpretation with the simulation code Microwave Studio.
ISSN:1944-4680
2152-9582
DOI:10.1109/PAC.2007.4440540