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Title: Superconducting RF Deflecting Cavity Design and Prototype for Short X-ray Pulse Generation

Superconducting RF Deflecting Cavity Design and Prototype for Short X-ray Pulse Generation 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.
Authors: ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
OSTI Identifier:956015
Report Number(s):JLAB-ACC-08-828; DOE/OR/23177-0436
TRN: US1004838
DOE Contract Number:AC05-060R23177
Resource Type:Conference
Data Type:
Resource Relation:Conference: Paper compiled for EPAC2008
Research Org:Thomas Jefferson Lab National Accelerator Facility
Sponsoring Org:USDOE
Country of Publication:United States
Language:English
Subject: 43 PARTICLE ACCELERATORS; ADVANCED PHOTON SOURCE; ANL; BENCHMARKS; CAVITIES; COPPER; DAMPING; DESIGN; EQUATOR; IMPEDANCE; NIOBIUM; WAVEGUIDES; ACCELERATORS