Superconducting RF Deflecting Cavity Design and Prototype for Short X-ray Pulse Generation
Description/Abstract
Deflecting RF cavities are proposed to be used in generating short x-ray pulses (on ~1-picosecond order) at the Advanced Photon Source (APS) at Argonne National Laboratory (ANL)* using a novel scheme by Zholents**. To meet the required deflecting voltage, impedance budget from higher order, lower order and the same order modes (HOM, LOM and SOM) of the APS storage ring, extensive deflecting cavity design studies have been conducted with numerical simulations and cavity prototypes. In this paper, we report recent progress on a single cell S-band (2.8-GHz) superconducting deflecting cavity design with waveguide damping. A copper and a niobium prototype cavity were fabricated and tested, respectively to benchmark the cavity and damping designs. A new damping scheme has been proposed which provides stronger damping to both HOM and LOM by directly coupling to a damping waveguide on the cavity equator.
| Creator/Author: | Shi, Jiaru ; Chen, H. ; Tang, C.-X. ; Cheng, Guangfeng ; Ciovati, Gianluigi ; Kneisel, Peter ; Rimmer, Robert ; Slack, Gary ; Turlington, Larry ; Wang, Haipeng ; Li, D. ; Nassiri, Alireza ; Waldschmidt, G.J. |
|---|---|
| Publication Date: | 2008 Jul 01 |
| OSTI Identifier: | OSTI ID: 956015 |
| Report Number(s): | JLAB-ACC-08-828; DOE/OR/23177-0436 |
| DOE Contract Number: | AC05-060R23177 |
| Other Number(s): | TRN: US1004838 |
| Resource Type: | Conference |
| Specific Type: | Conference |
| Resource Relation: | Conference: Paper compiled for EPAC2008 |
| Research Org: | Thomas Jefferson Lab National Accelerator Facility |
| Sponsoring Org: | USDOE |
| Subject: | 43 PARTICLE ACCELERATORS; ADVANCED PHOTON SOURCE; ANL; BENCHMARKS; CAVITIES; COPPER; DAMPING; DESIGN; EQUATOR; IMPEDANCE; NIOBIUM; WAVEGUIDES; ACCELERATORS |
| Country of Publication: | United States |
| Language: | English |
| Update Date: | 2010 Aug 05 |
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