Abstract
In linacs for intense pulsed proton accelerators, the beam has a multiple time-structure, and each beam time-structure generates resonance. When a higher-order mode (HOM) is near these resonance frequencies, the induced voltage could be large and accordingly the resulting HOM power, too. In order to understand the effects of a complex beam time-structure on the mode excitations and the resulting HOM powers in elliptical superconducting cavities, analytic expressions are developed, with which the beam-induced voltage and corresponding power are explored, taking into account the properties of HOM frequency behavior in elliptical superconducting cavities. The results and understandings from this analysis are presented with the beam parameters of the Spallation Neutron Source (SNS) superconducting linac.
| Original language | English |
|---|---|
| Pages (from-to) | 1-10 |
| Number of pages | 10 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
| Volume | 492 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - Oct 11 2002 |
| Externally published | Yes |
Funding
We are very thankful to all our colleagues who contributed to this work. This work is sponsored by the Division of Materials Science, US Department of Energy, under contract number DE-AC05-00OR22725 with UT-Battelle Corporation for Oak Ridge National Laboratory.
| Funders | Funder number |
|---|---|
| Division of Materials Science | |
| US Department of Energy | DE-AC05-00OR22725 |
Keywords
- Beam time-structure
- Higher-order-mode (HOM)
- Linac
- Resonance
- Superconducting cavity